Clinical Review

ILLUSTRATION © IRYNA INSHYNA/SHUTTERSTOCK

Patient satisfaction questionnaires were developed in the 1980s as part of the movement to better understand the patient’s experience and their perspective of the quality of care. In 1985, the Press Ganey survey—now the most widely used method to assess patient satisfaction—was developed by 2 professors in anthropology and sociology-statistics at Notre Dame. Initially intended for inpatient admissions, the survey was validated based on a few thousand survey results.¹ Given the strong interest in improving patient satisfaction at the time, it became widely adopted and quickly expanded into outpatient encounters and ambulatory surgery settings.

Although other surveys have been developed,² the Press Ganey survey is the most commonly used assessment tool for patient satisfaction metrics in the United States, with approximately 50% of all hospitals and more than 41,000 health care organizations using its services.^3,4 The survey consists of 6 domains related to satisfaction with:

1. the care provider

2. the nurse or assistant

3. personal issues

4. overall assessment

5. access

6. moving through the visit. 

Survey items are scored using a 5-point Likert scale, with scores ranging from “very poor” (a score of 1) to “very good” (a score of 5). According to the company, because this format is balanced and parallel (unlike a “poor” to “excellent” format), responses can be quantified and used statistically without violating methodologic assumptions. Also, variability in patients’ responses with this format allows for the identification of opportunities to improve, unlike “yes/no” response formats.¹ There are limitations to this design, however, which can impact data quality,⁵ as we will see.

While the distribution process varies by institution, there is an algorithm laid out by Press Ganey for administering surveys to patients in their preferred language after outpatient visits. Based on recent research into Press Ganey response rates, the typical response rate is estimated to be 16% to 19%.⁶ Although this low response rate is typical of survey data, it inherently introduces the risk of responder bias—meaning results may be skewed by patients who represent the extremes of satisfaction or dissatisfaction.

Adoption of the survey as we move toward value-based care

More recently, patients’ satisfaction with their health care has received increased attention as we move to a patient-centered care model and as health care reimbursement models shift toward value-based care. Current trends in health care policy statements include the importance of raising the standard of care and shifting from a “fee-for-service” to a “pay-for-performance” reimbursement model.^7,8 As a result, hospitals are establishing systems to measure “performance” that are not nationally standardized or extensively studied with objective measures. The changing standard of health care expectations in the United States is a topic of much public debate.⁹ And as expectations and new standards are defined, the impact of implementing novel measures of performance should be evaluated prior to widespread adoption and utilization.

Patient satisfaction also has been identified as a driver for hospital finances through loyalty, described as the “likelihood to return to that system for future medical services.”^10,11 This measure has contributed to policy changes that reinforce prioritization of patient satisfaction. For example, the Affordable Care Act tied Medicare reimbursement and patient satisfaction together in the Hospital Value-Based Purchasing Program. This program uses measures of clinical processes, efficiency, outcomes, and patient experiences to calculate a total score that results in hospital reimbursement and incentives,¹² which creates a direct pathway from patient experience to reimbursement—underscoring hospitals’ desire for ongoing assessment of patient satisfaction.

Continue to: Gender, race, and age bias...

Gender, race, and age bias

Although the rationale behind gathering patient input is important, recent data suggest that patient satisfaction surveys are subject to inherent biases.^6,13,14 These biases tend to negatively impact women and non-White physicians, adding to the systemic discrimination against women and physicians of color that already exists in health care.

In a single-site retrospective study performed in 2018 by Rogo-Gupta et al, female gynecologists were found to be 47% less likely to receive top patient satisfaction scores than their male counterparts owing to their gender alone, suggesting that gender bias may impact the results of patient satisfaction questionnaires.¹³ The authors encouraged that the results of patient satisfaction surveys be interpreted with great caution until the impact on female physicians is better understood.

A multi-center study by the same group (Rogo-Gupta et al) assessed the same construct across 5 different geographically diverse institutions.¹⁵ This study confirmed that female gynecologists were less likely to receive a top satisfaction score from their patients (19% lower odds when compared with male gynecologists). They also studied the effects of other patient demographics, including age, race/ethnicity, and race concordance. Older patients (aged ≥63 years) had an over-3-fold increase in odds of providing a top satisfaction score than younger patients. Additionally, Asian physicians had significantly lower odds of receiving a top satisfaction score when compared with White physicians, while Asian patients had significantly lower odds of providing a top satisfaction score when compared with White patients. Lastly, in most cases, when underrepresented-in-medicine patients saw an underrepresented-in-medicine physician (race concordance), there was a significant increase in odds of receiving a top satisfaction score. Asian race concordance, however, actually resulted in a lower likelihood of receiving a top satisfaction score.¹⁵

Literature from other specialties supports these findings. These results are consistent with emerging data from other medical specialties that also suggest that Press Ganey survey data are subject to inherent biases. For example, data from emergency medicine literature have shown discrepancies between patient satisfaction for providers at tertiary inner-city institutions versus those in affluent suburban populations,¹⁶ and that worse mortality is actually correlated with better patient satisfaction scores, and vice versa.¹⁷

Another study by Sotto-Santiago in 2019 assessed patient satisfaction scores in multiple specialties at a single institution where quality-related financial incentives were offered based on this metric. They found a significant difference in patient satisfaction scores between underrepresented and White physicians, which suggests a potential bias among patients and institutional practices—ultimately leading to pay inequities through differences in financial incentives.¹⁸

Percentile differences reveal small gaps in satisfaction ratings

When examining the difference between raw Press Ganey patient satisfaction data and the percentiles associated with these scores, an interesting finding arises. Looking at the 2023 multicenter study by Rogo-Gupta et al, the difference in the top raw scores between male and female gynecologists appears to be small (3.3%).¹⁵ However, in 2020, the difference in top scores separating the top (75th) and bottom (25th) percentile quartiles of physicians was also small, at only 6.9%.

Considering the percentiles, if a provider who scores in the 25th percentile is compared with a colleague who scores in the 75th percentile, they may think the reported satisfaction score differences were quite large. This may potentially invoke feelings of decreased self-worth, negatively impact their professional identity or overall well-being, and they may seek (or be told to seek) improvement opportunities. Now imagine the provider in question realizes the difference between the 25th percentile and 75th percentile is actually only 6.9%. This information may completely change how the results are interpreted and acted upon by administrators. This is further changed with the understanding that 3.3% of the difference may be due to gender alone, narrowing the gap even further. Providers would become understandably frustrated if measures of success such as reimbursement, financial bonus or incentives, promotion, or advancement are linked to these results. It violates the value of fairness and does not offer an equitable starting point.

Evolution of the data distribution. Another consideration, as noted by Robert C. Lloyd, PhD, one of the statisticians who helped develop the percentile statistical analysis mapping in 1985, is that it was based on a classic bell-shaped distribution of patient satisfaction survey scores.¹⁹ Because hospitals, medical groups, and physicians have been working these past 20 years to achieve higher Press Ganey scores, the data no longer have a bell-shaped distribution. Rather, there are significant clusters of raw scores at the high end with a very narrow response range. When these data are mapped to the percentile spectrum, they are highly inaccurate.¹⁹

Impact of sample size. According to Press Ganey, a minimum of 30 survey responses collected over the designated time period is necessary to draw meaningful conclusions of the data for a specific individual, program, or hospital. Despite this requirement to achieve statistical significance, Sullivan and DeLucia found that the firm often provides comparative data about hospital departments and individual physicians based on a smaller sample size that may create an unacceptably large margin of error.²⁰ Sullivan, for example, said his department may only have 8 to 10 Press Ganey survey responses per month and yet still receives monthly reports from the company analyzing the data. Because of the small sample size, 1 month his department ranked in the 1st percentile and 2 months later it ranked in the 99th percentile.²⁰

The effect of a high ceiling rate. A psychometrics report for the Press Ganey survey is available from the vendor that provides vague assessments of reliability and validity based on 2,762 surveys from 12 practices across 10 states. This report describes a 12-question version of the survey with “no problems encountered” with missingness and response variability. The report further states that the Press Ganey survey demonstrates construct, convergent, divergent, and predictive validities, and high reliability; however, these data are not made available.¹

In response to this report, Presson et al analyzed more than 34,000 surveys from one institution to evaluate the reliability and validity of the Press Ganey survey.21 Overall, the survey demonstrated suitable psychometric properties for most metrics. However, Presson et al noted a significantly high ceiling rate of 29.3% for the total score, which ranged from 55.4% to 84.1% across items.²¹ (Ceiling rates are considered substantial if they occur more than 20% of the time.) Ultimately, a high ceiling rate reduces the power to discriminate between patients who have high satisfaction (everyone is “happy”) with those who are just slightly less than happy, but not dissatisfied. This data quality metric can impact the reliability and validity of a survey—and substantial ceiling rates can notably impact percentile rankings of scores within an institution, offering a possible explanation for the small percentage change between the top and bottom percentiles.

Continue to: Other issues with surveys...

Other issues with surveys

In addition to the limitations associated with percentile groupings, survey data are always subject to nonresponse bias, and small sample size can lead to nonsignificant results. Skewed responses also can make it difficult to identify true outlying providers who may need remediation or may be offering a superior patient experience. Satisfaction surveys also lack an assessment of objective data and instead assess how patients perceive and feel, which introduces subjectivity to the results.

Additionally, focusing on improving patient experience ratings can incentivize unnecessary or inappropriate care (ie, overprescribing of narcotics, prescribing antibiotics when not indicated, or ordering testing that may not change management). Some physicians even state that they are not getting the type of feedback that they are asking for and that the survey is not asking the right questions to elicit patient input that is meaningful to their practice. Lastly, the incorporation of trainees and advanced practice providers in the patient care experience leads to the assessment of an alternative provider being included in the ultimate score and may not be representative of that physician.

Patients’ perception and survey results. In some circumstances, the patient’s understanding of their medical situation may affect their responses. Some may argue that patients may mistake a physician’s confidence for competence, when in reality these two entities are mutually exclusive. In a randomized controlled trial, researchers from Mount Sinai School of Medicine and Columbia University Medical Center surveyed inner-city women with newly diagnosed and surgically treated early-stage breast cancer for their perceived quality of care and the process of getting care, including referrals, test results, and treatments. They compared the responses with patient records to determine the actual quality of care. Of the 374 women who received treatment for early-stage breast cancer, 55% said they received “excellent care,” but most—88%—actually got care that was in line with the best current treatment guidelines. Interestingly, the study found African American women were less likely to report excellent care than White or Hispanic women, less likely to trust their doctor, and more likely to say they experienced bias during the process. However, there was no difference in actual quality of care received in any group.²²

You can’t improve what you can’t control. Ultimately, while many providers think patient satisfaction survey results may help inform some aspects of their practice, they cannot improve what they cannot control. For example, the multicenter study by Rogo-Gupta et al found that older patients (≥63 years) have more than a 3-fold increase in odds of giving a top satisfaction score than younger patients (≤33 years), independent of other aspects of the care experience.15 Additionally, they found that older physicians (≥56 years) had a significant increase in odds of receiving a top satisfaction score when compared with physicians who were younger than 55 years old.¹⁵ Given that physicians clearly cannot control their own age or the age of their patients, the negative impacts of these biases need to be addressed and remedied at a systems level.

Why might these biases exist?

While we cannot completely understand all of the possible explanations for these biases, it is important to emphasize the long-standing prejudice and discrimination against women and people of color in our society and how this has impacted our behavior. While strides have been made, there clearly still seems to be a difference between what we say and how our biases impact our behavior. Women are still tougher on women in professional evaluations in other fields as well²³; it is not unique to medicine. While workplace improvements are slowly changing, women still face inequities. The more research we publish to describe it, the more we hope the conversation continues, allowing us to reduce the impact of bias on our sense of self-worth and identity related to our careers, narrow the pay gap, and see women advance at the same rate as male counterparts. Considerable transformation is crucial to prevent further workforce attrition.

With regard to the lower scores provided by Asian patients, studies suggest that cultural response bias, rather than true differences in quality of care, may account for these discrepancies. Previous literature has found that Asian patients are more likely to select midpoints, rather than extremes, when completing Likert-type studies²⁴ and are not more likely to change medical providers than other race/ethnicities, indicating that lower ratings may not necessarily imply greater dissatisfaction with care.²⁵

Far-reaching effects on finances, income, well-being, job satisfaction, etc.

Depending on how the results are distributed and used, the effects of patient satisfaction surveys can extend well beyond the original intentions. At some institutions, income for physicians is directly tied to their Press Ganey satisfaction scores, which could have profound implications for female and Asian physicians,^13,15 who would be paid less—resulting in a wider pay gap than already exists.¹⁸

When negative and not constructive, patient evaluations can contribute to physician burnout and a loss of productive members of the workforce.²⁶ This is especially important in obstetrics and gynecology, where physicians are most likely to experience burnout due to multiple factors such as high-risk medical conditions, pressures of the electronic medical record (EMR), the medicolegal environment, and difficulty balancing patient expectations for autonomy with professional judgement.²⁷ Burnout also disproportionately affects women and younger physicians, which is especially concerning given that, in 2017, approximately one-third of practicing obstetrician/gynecologists were women, while that same year more than 80% of trainees matching into the field were women.²⁸ In one survey sent to members of a prominent medical society, 20% of the medical professionals who responded said they have had their employment threatened by low patient satisfaction scores, 78% reported that patient satisfaction surveys moderately or severely affected their job satisfaction, and 28% stated they had considered quitting their job or leaving the medical profession.²⁹Another related effect is the association between malpractice proceedings and a lack of satisfaction with perceived quality of physician-patient communication.³⁰ This may be an important determinant of malpractice lawsuits, and ensuring high patient satisfaction may be a form of defensive medicine.

Continue to: Controlling the narrative for the future: Proposed strategies...

Controlling the narrative for the future: Proposed strategies

The rapid, widespread adoption of the Press Ganey survey across specialties, clinical care settings, and geographic areas may have been largely due to the ease and operational benefits for hospitals rather than after rigorous study and validation. For example, repeated use of a specific measurement tool may facilitate comparison across areas within a hospital but also across institutions, which can help assess performance at a national level. Hospitals also may have a financial incentive to work with a single third-party or vendor instead of using multiple options across multiple vendors. However, the impact of adoption of novel measures of performance should be evaluated prior to widespread adoption and utilization.

A similar example of an emergence of a technological advancement that has changed the field of medicine and how we provide care is the EMR. Epic is now the most commonly used medical record system and holds the market share of the industry, covering 78% of patients in the United States.³¹ While there are certainly many potential benefits of a common EMR, such as ease of information sharing and standardization of formatting, opportunities are identified in real time and require product adjustment. For example, modifications have been made to accurately represent gender outside of the previously used dichotomous options. Diagnoses such as cervical cancer screening can now be used even if the patient gender is listed as male.

Similarly, the Press Ganey and other patient satisfaction questionnaires should be evaluated and modified to address existing societal biases. The World Health Organization estimates that it will take 300 years to fix gender inequality,³² but we have an opportunity now to control the narrative and improve patient feedback.

Future research avenues

Ultimately, there is a need to further explore currently available methods of evaluating clinical encounters to better understand the inherent biases and limitations. We hope this review will encourage other physicians to examine their specialties and hospitals and require similar analyses from vendors of such satisfaction rating products prior to using them. At the very least, health systems should be willing to partner with vendors and physicians on an ongoing basis to better understand the biases involved in these survey results and make modifications as needed. Patients also obtain information from and contribute to self-reported, publicly available websites; therefore, additional exploration into a nationalized standard for assessing patient satisfaction also may serve as an opportunity to standardize the information patients evaluate.³³ Further assessment of the potential financial and emotional impact of using the currently available patient-reported surveys on female physicians, Asian physicians, young physicians, and physicians who see young patients is needed. It is time to put pressure on a broken patient satisfaction system and improve on a national level to avoid undue negative consequences on our physicians. Use of patient satisfaction survey data should be limited until we all understand and account for the biases that are evident. ●

ILLUSTRATION © IRYNA INSHYNA/SHUTTERSTOCK

Patient satisfaction questionnaires were developed in the 1980s as part of the movement to better understand the patient’s experience and their perspective of the quality of care. In 1985, the Press Ganey survey—now the most widely used method to assess patient satisfaction—was developed by 2 professors in anthropology and sociology-statistics at Notre Dame. Initially intended for inpatient admissions, the survey was validated based on a few thousand survey results.¹ Given the strong interest in improving patient satisfaction at the time, it became widely adopted and quickly expanded into outpatient encounters and ambulatory surgery settings.

Although other surveys have been developed,² the Press Ganey survey is the most commonly used assessment tool for patient satisfaction metrics in the United States, with approximately 50% of all hospitals and more than 41,000 health care organizations using its services.^3,4 The survey consists of 6 domains related to satisfaction with:

1. the care provider

2. the nurse or assistant

3. personal issues

4. overall assessment

5. access

6. moving through the visit. 

Survey items are scored using a 5-point Likert scale, with scores ranging from “very poor” (a score of 1) to “very good” (a score of 5). According to the company, because this format is balanced and parallel (unlike a “poor” to “excellent” format), responses can be quantified and used statistically without violating methodologic assumptions. Also, variability in patients’ responses with this format allows for the identification of opportunities to improve, unlike “yes/no” response formats.¹ There are limitations to this design, however, which can impact data quality,⁵ as we will see.

While the distribution process varies by institution, there is an algorithm laid out by Press Ganey for administering surveys to patients in their preferred language after outpatient visits. Based on recent research into Press Ganey response rates, the typical response rate is estimated to be 16% to 19%.⁶ Although this low response rate is typical of survey data, it inherently introduces the risk of responder bias—meaning results may be skewed by patients who represent the extremes of satisfaction or dissatisfaction.

Adoption of the survey as we move toward value-based care

More recently, patients’ satisfaction with their health care has received increased attention as we move to a patient-centered care model and as health care reimbursement models shift toward value-based care. Current trends in health care policy statements include the importance of raising the standard of care and shifting from a “fee-for-service” to a “pay-for-performance” reimbursement model.^7,8 As a result, hospitals are establishing systems to measure “performance” that are not nationally standardized or extensively studied with objective measures. The changing standard of health care expectations in the United States is a topic of much public debate.⁹ And as expectations and new standards are defined, the impact of implementing novel measures of performance should be evaluated prior to widespread adoption and utilization.

Patient satisfaction also has been identified as a driver for hospital finances through loyalty, described as the “likelihood to return to that system for future medical services.”^10,11 This measure has contributed to policy changes that reinforce prioritization of patient satisfaction. For example, the Affordable Care Act tied Medicare reimbursement and patient satisfaction together in the Hospital Value-Based Purchasing Program. This program uses measures of clinical processes, efficiency, outcomes, and patient experiences to calculate a total score that results in hospital reimbursement and incentives,¹² which creates a direct pathway from patient experience to reimbursement—underscoring hospitals’ desire for ongoing assessment of patient satisfaction.

Continue to: Gender, race, and age bias...

Gender, race, and age bias

Although the rationale behind gathering patient input is important, recent data suggest that patient satisfaction surveys are subject to inherent biases.^6,13,14 These biases tend to negatively impact women and non-White physicians, adding to the systemic discrimination against women and physicians of color that already exists in health care.

In a single-site retrospective study performed in 2018 by Rogo-Gupta et al, female gynecologists were found to be 47% less likely to receive top patient satisfaction scores than their male counterparts owing to their gender alone, suggesting that gender bias may impact the results of patient satisfaction questionnaires.¹³ The authors encouraged that the results of patient satisfaction surveys be interpreted with great caution until the impact on female physicians is better understood.

A multi-center study by the same group (Rogo-Gupta et al) assessed the same construct across 5 different geographically diverse institutions.¹⁵ This study confirmed that female gynecologists were less likely to receive a top satisfaction score from their patients (19% lower odds when compared with male gynecologists). They also studied the effects of other patient demographics, including age, race/ethnicity, and race concordance. Older patients (aged ≥63 years) had an over-3-fold increase in odds of providing a top satisfaction score than younger patients. Additionally, Asian physicians had significantly lower odds of receiving a top satisfaction score when compared with White physicians, while Asian patients had significantly lower odds of providing a top satisfaction score when compared with White patients. Lastly, in most cases, when underrepresented-in-medicine patients saw an underrepresented-in-medicine physician (race concordance), there was a significant increase in odds of receiving a top satisfaction score. Asian race concordance, however, actually resulted in a lower likelihood of receiving a top satisfaction score.¹⁵

Literature from other specialties supports these findings. These results are consistent with emerging data from other medical specialties that also suggest that Press Ganey survey data are subject to inherent biases. For example, data from emergency medicine literature have shown discrepancies between patient satisfaction for providers at tertiary inner-city institutions versus those in affluent suburban populations,¹⁶ and that worse mortality is actually correlated with better patient satisfaction scores, and vice versa.¹⁷

Another study by Sotto-Santiago in 2019 assessed patient satisfaction scores in multiple specialties at a single institution where quality-related financial incentives were offered based on this metric. They found a significant difference in patient satisfaction scores between underrepresented and White physicians, which suggests a potential bias among patients and institutional practices—ultimately leading to pay inequities through differences in financial incentives.¹⁸

Percentile differences reveal small gaps in satisfaction ratings

When examining the difference between raw Press Ganey patient satisfaction data and the percentiles associated with these scores, an interesting finding arises. Looking at the 2023 multicenter study by Rogo-Gupta et al, the difference in the top raw scores between male and female gynecologists appears to be small (3.3%).¹⁵ However, in 2020, the difference in top scores separating the top (75th) and bottom (25th) percentile quartiles of physicians was also small, at only 6.9%.

Considering the percentiles, if a provider who scores in the 25th percentile is compared with a colleague who scores in the 75th percentile, they may think the reported satisfaction score differences were quite large. This may potentially invoke feelings of decreased self-worth, negatively impact their professional identity or overall well-being, and they may seek (or be told to seek) improvement opportunities. Now imagine the provider in question realizes the difference between the 25th percentile and 75th percentile is actually only 6.9%. This information may completely change how the results are interpreted and acted upon by administrators. This is further changed with the understanding that 3.3% of the difference may be due to gender alone, narrowing the gap even further. Providers would become understandably frustrated if measures of success such as reimbursement, financial bonus or incentives, promotion, or advancement are linked to these results. It violates the value of fairness and does not offer an equitable starting point.

Evolution of the data distribution. Another consideration, as noted by Robert C. Lloyd, PhD, one of the statisticians who helped develop the percentile statistical analysis mapping in 1985, is that it was based on a classic bell-shaped distribution of patient satisfaction survey scores.¹⁹ Because hospitals, medical groups, and physicians have been working these past 20 years to achieve higher Press Ganey scores, the data no longer have a bell-shaped distribution. Rather, there are significant clusters of raw scores at the high end with a very narrow response range. When these data are mapped to the percentile spectrum, they are highly inaccurate.¹⁹

Impact of sample size. According to Press Ganey, a minimum of 30 survey responses collected over the designated time period is necessary to draw meaningful conclusions of the data for a specific individual, program, or hospital. Despite this requirement to achieve statistical significance, Sullivan and DeLucia found that the firm often provides comparative data about hospital departments and individual physicians based on a smaller sample size that may create an unacceptably large margin of error.²⁰ Sullivan, for example, said his department may only have 8 to 10 Press Ganey survey responses per month and yet still receives monthly reports from the company analyzing the data. Because of the small sample size, 1 month his department ranked in the 1st percentile and 2 months later it ranked in the 99th percentile.²⁰

The effect of a high ceiling rate. A psychometrics report for the Press Ganey survey is available from the vendor that provides vague assessments of reliability and validity based on 2,762 surveys from 12 practices across 10 states. This report describes a 12-question version of the survey with “no problems encountered” with missingness and response variability. The report further states that the Press Ganey survey demonstrates construct, convergent, divergent, and predictive validities, and high reliability; however, these data are not made available.¹

In response to this report, Presson et al analyzed more than 34,000 surveys from one institution to evaluate the reliability and validity of the Press Ganey survey.21 Overall, the survey demonstrated suitable psychometric properties for most metrics. However, Presson et al noted a significantly high ceiling rate of 29.3% for the total score, which ranged from 55.4% to 84.1% across items.²¹ (Ceiling rates are considered substantial if they occur more than 20% of the time.) Ultimately, a high ceiling rate reduces the power to discriminate between patients who have high satisfaction (everyone is “happy”) with those who are just slightly less than happy, but not dissatisfied. This data quality metric can impact the reliability and validity of a survey—and substantial ceiling rates can notably impact percentile rankings of scores within an institution, offering a possible explanation for the small percentage change between the top and bottom percentiles.

Continue to: Other issues with surveys...

Other issues with surveys

In addition to the limitations associated with percentile groupings, survey data are always subject to nonresponse bias, and small sample size can lead to nonsignificant results. Skewed responses also can make it difficult to identify true outlying providers who may need remediation or may be offering a superior patient experience. Satisfaction surveys also lack an assessment of objective data and instead assess how patients perceive and feel, which introduces subjectivity to the results.

Additionally, focusing on improving patient experience ratings can incentivize unnecessary or inappropriate care (ie, overprescribing of narcotics, prescribing antibiotics when not indicated, or ordering testing that may not change management). Some physicians even state that they are not getting the type of feedback that they are asking for and that the survey is not asking the right questions to elicit patient input that is meaningful to their practice. Lastly, the incorporation of trainees and advanced practice providers in the patient care experience leads to the assessment of an alternative provider being included in the ultimate score and may not be representative of that physician.

Patients’ perception and survey results. In some circumstances, the patient’s understanding of their medical situation may affect their responses. Some may argue that patients may mistake a physician’s confidence for competence, when in reality these two entities are mutually exclusive. In a randomized controlled trial, researchers from Mount Sinai School of Medicine and Columbia University Medical Center surveyed inner-city women with newly diagnosed and surgically treated early-stage breast cancer for their perceived quality of care and the process of getting care, including referrals, test results, and treatments. They compared the responses with patient records to determine the actual quality of care. Of the 374 women who received treatment for early-stage breast cancer, 55% said they received “excellent care,” but most—88%—actually got care that was in line with the best current treatment guidelines. Interestingly, the study found African American women were less likely to report excellent care than White or Hispanic women, less likely to trust their doctor, and more likely to say they experienced bias during the process. However, there was no difference in actual quality of care received in any group.²²

You can’t improve what you can’t control. Ultimately, while many providers think patient satisfaction survey results may help inform some aspects of their practice, they cannot improve what they cannot control. For example, the multicenter study by Rogo-Gupta et al found that older patients (≥63 years) have more than a 3-fold increase in odds of giving a top satisfaction score than younger patients (≤33 years), independent of other aspects of the care experience.15 Additionally, they found that older physicians (≥56 years) had a significant increase in odds of receiving a top satisfaction score when compared with physicians who were younger than 55 years old.¹⁵ Given that physicians clearly cannot control their own age or the age of their patients, the negative impacts of these biases need to be addressed and remedied at a systems level.

Why might these biases exist?

While we cannot completely understand all of the possible explanations for these biases, it is important to emphasize the long-standing prejudice and discrimination against women and people of color in our society and how this has impacted our behavior. While strides have been made, there clearly still seems to be a difference between what we say and how our biases impact our behavior. Women are still tougher on women in professional evaluations in other fields as well²³; it is not unique to medicine. While workplace improvements are slowly changing, women still face inequities. The more research we publish to describe it, the more we hope the conversation continues, allowing us to reduce the impact of bias on our sense of self-worth and identity related to our careers, narrow the pay gap, and see women advance at the same rate as male counterparts. Considerable transformation is crucial to prevent further workforce attrition.

With regard to the lower scores provided by Asian patients, studies suggest that cultural response bias, rather than true differences in quality of care, may account for these discrepancies. Previous literature has found that Asian patients are more likely to select midpoints, rather than extremes, when completing Likert-type studies²⁴ and are not more likely to change medical providers than other race/ethnicities, indicating that lower ratings may not necessarily imply greater dissatisfaction with care.²⁵

Far-reaching effects on finances, income, well-being, job satisfaction, etc.

Depending on how the results are distributed and used, the effects of patient satisfaction surveys can extend well beyond the original intentions. At some institutions, income for physicians is directly tied to their Press Ganey satisfaction scores, which could have profound implications for female and Asian physicians,^13,15 who would be paid less—resulting in a wider pay gap than already exists.¹⁸

When negative and not constructive, patient evaluations can contribute to physician burnout and a loss of productive members of the workforce.²⁶ This is especially important in obstetrics and gynecology, where physicians are most likely to experience burnout due to multiple factors such as high-risk medical conditions, pressures of the electronic medical record (EMR), the medicolegal environment, and difficulty balancing patient expectations for autonomy with professional judgement.²⁷ Burnout also disproportionately affects women and younger physicians, which is especially concerning given that, in 2017, approximately one-third of practicing obstetrician/gynecologists were women, while that same year more than 80% of trainees matching into the field were women.²⁸ In one survey sent to members of a prominent medical society, 20% of the medical professionals who responded said they have had their employment threatened by low patient satisfaction scores, 78% reported that patient satisfaction surveys moderately or severely affected their job satisfaction, and 28% stated they had considered quitting their job or leaving the medical profession.²⁹Another related effect is the association between malpractice proceedings and a lack of satisfaction with perceived quality of physician-patient communication.³⁰ This may be an important determinant of malpractice lawsuits, and ensuring high patient satisfaction may be a form of defensive medicine.

Continue to: Controlling the narrative for the future: Proposed strategies...

Controlling the narrative for the future: Proposed strategies

The rapid, widespread adoption of the Press Ganey survey across specialties, clinical care settings, and geographic areas may have been largely due to the ease and operational benefits for hospitals rather than after rigorous study and validation. For example, repeated use of a specific measurement tool may facilitate comparison across areas within a hospital but also across institutions, which can help assess performance at a national level. Hospitals also may have a financial incentive to work with a single third-party or vendor instead of using multiple options across multiple vendors. However, the impact of adoption of novel measures of performance should be evaluated prior to widespread adoption and utilization.

A similar example of an emergence of a technological advancement that has changed the field of medicine and how we provide care is the EMR. Epic is now the most commonly used medical record system and holds the market share of the industry, covering 78% of patients in the United States.³¹ While there are certainly many potential benefits of a common EMR, such as ease of information sharing and standardization of formatting, opportunities are identified in real time and require product adjustment. For example, modifications have been made to accurately represent gender outside of the previously used dichotomous options. Diagnoses such as cervical cancer screening can now be used even if the patient gender is listed as male.

Similarly, the Press Ganey and other patient satisfaction questionnaires should be evaluated and modified to address existing societal biases. The World Health Organization estimates that it will take 300 years to fix gender inequality,³² but we have an opportunity now to control the narrative and improve patient feedback.

Future research avenues

Ultimately, there is a need to further explore currently available methods of evaluating clinical encounters to better understand the inherent biases and limitations. We hope this review will encourage other physicians to examine their specialties and hospitals and require similar analyses from vendors of such satisfaction rating products prior to using them. At the very least, health systems should be willing to partner with vendors and physicians on an ongoing basis to better understand the biases involved in these survey results and make modifications as needed. Patients also obtain information from and contribute to self-reported, publicly available websites; therefore, additional exploration into a nationalized standard for assessing patient satisfaction also may serve as an opportunity to standardize the information patients evaluate.³³ Further assessment of the potential financial and emotional impact of using the currently available patient-reported surveys on female physicians, Asian physicians, young physicians, and physicians who see young patients is needed. It is time to put pressure on a broken patient satisfaction system and improve on a national level to avoid undue negative consequences on our physicians. Use of patient satisfaction survey data should be limited until we all understand and account for the biases that are evident. ●

ILLUSTRATION © IRYNA INSHYNA/SHUTTERSTOCK

Patient satisfaction questionnaires were developed in the 1980s as part of the movement to better understand the patient’s experience and their perspective of the quality of care. In 1985, the Press Ganey survey—now the most widely used method to assess patient satisfaction—was developed by 2 professors in anthropology and sociology-statistics at Notre Dame. Initially intended for inpatient admissions, the survey was validated based on a few thousand survey results.¹ Given the strong interest in improving patient satisfaction at the time, it became widely adopted and quickly expanded into outpatient encounters and ambulatory surgery settings.

Although other surveys have been developed,² the Press Ganey survey is the most commonly used assessment tool for patient satisfaction metrics in the United States, with approximately 50% of all hospitals and more than 41,000 health care organizations using its services.^3,4 The survey consists of 6 domains related to satisfaction with:

1. the care provider

2. the nurse or assistant

3. personal issues

4. overall assessment

5. access

6. moving through the visit. 

Survey items are scored using a 5-point Likert scale, with scores ranging from “very poor” (a score of 1) to “very good” (a score of 5). According to the company, because this format is balanced and parallel (unlike a “poor” to “excellent” format), responses can be quantified and used statistically without violating methodologic assumptions. Also, variability in patients’ responses with this format allows for the identification of opportunities to improve, unlike “yes/no” response formats.¹ There are limitations to this design, however, which can impact data quality,⁵ as we will see.

While the distribution process varies by institution, there is an algorithm laid out by Press Ganey for administering surveys to patients in their preferred language after outpatient visits. Based on recent research into Press Ganey response rates, the typical response rate is estimated to be 16% to 19%.⁶ Although this low response rate is typical of survey data, it inherently introduces the risk of responder bias—meaning results may be skewed by patients who represent the extremes of satisfaction or dissatisfaction.

Adoption of the survey as we move toward value-based care

More recently, patients’ satisfaction with their health care has received increased attention as we move to a patient-centered care model and as health care reimbursement models shift toward value-based care. Current trends in health care policy statements include the importance of raising the standard of care and shifting from a “fee-for-service” to a “pay-for-performance” reimbursement model.^7,8 As a result, hospitals are establishing systems to measure “performance” that are not nationally standardized or extensively studied with objective measures. The changing standard of health care expectations in the United States is a topic of much public debate.⁹ And as expectations and new standards are defined, the impact of implementing novel measures of performance should be evaluated prior to widespread adoption and utilization.

Patient satisfaction also has been identified as a driver for hospital finances through loyalty, described as the “likelihood to return to that system for future medical services.”^10,11 This measure has contributed to policy changes that reinforce prioritization of patient satisfaction. For example, the Affordable Care Act tied Medicare reimbursement and patient satisfaction together in the Hospital Value-Based Purchasing Program. This program uses measures of clinical processes, efficiency, outcomes, and patient experiences to calculate a total score that results in hospital reimbursement and incentives,¹² which creates a direct pathway from patient experience to reimbursement—underscoring hospitals’ desire for ongoing assessment of patient satisfaction.

Continue to: Gender, race, and age bias...

Gender, race, and age bias

Although the rationale behind gathering patient input is important, recent data suggest that patient satisfaction surveys are subject to inherent biases.^6,13,14 These biases tend to negatively impact women and non-White physicians, adding to the systemic discrimination against women and physicians of color that already exists in health care.

In a single-site retrospective study performed in 2018 by Rogo-Gupta et al, female gynecologists were found to be 47% less likely to receive top patient satisfaction scores than their male counterparts owing to their gender alone, suggesting that gender bias may impact the results of patient satisfaction questionnaires.¹³ The authors encouraged that the results of patient satisfaction surveys be interpreted with great caution until the impact on female physicians is better understood.

A multi-center study by the same group (Rogo-Gupta et al) assessed the same construct across 5 different geographically diverse institutions.¹⁵ This study confirmed that female gynecologists were less likely to receive a top satisfaction score from their patients (19% lower odds when compared with male gynecologists). They also studied the effects of other patient demographics, including age, race/ethnicity, and race concordance. Older patients (aged ≥63 years) had an over-3-fold increase in odds of providing a top satisfaction score than younger patients. Additionally, Asian physicians had significantly lower odds of receiving a top satisfaction score when compared with White physicians, while Asian patients had significantly lower odds of providing a top satisfaction score when compared with White patients. Lastly, in most cases, when underrepresented-in-medicine patients saw an underrepresented-in-medicine physician (race concordance), there was a significant increase in odds of receiving a top satisfaction score. Asian race concordance, however, actually resulted in a lower likelihood of receiving a top satisfaction score.¹⁵

Literature from other specialties supports these findings. These results are consistent with emerging data from other medical specialties that also suggest that Press Ganey survey data are subject to inherent biases. For example, data from emergency medicine literature have shown discrepancies between patient satisfaction for providers at tertiary inner-city institutions versus those in affluent suburban populations,¹⁶ and that worse mortality is actually correlated with better patient satisfaction scores, and vice versa.¹⁷

Another study by Sotto-Santiago in 2019 assessed patient satisfaction scores in multiple specialties at a single institution where quality-related financial incentives were offered based on this metric. They found a significant difference in patient satisfaction scores between underrepresented and White physicians, which suggests a potential bias among patients and institutional practices—ultimately leading to pay inequities through differences in financial incentives.¹⁸

Percentile differences reveal small gaps in satisfaction ratings

When examining the difference between raw Press Ganey patient satisfaction data and the percentiles associated with these scores, an interesting finding arises. Looking at the 2023 multicenter study by Rogo-Gupta et al, the difference in the top raw scores between male and female gynecologists appears to be small (3.3%).¹⁵ However, in 2020, the difference in top scores separating the top (75th) and bottom (25th) percentile quartiles of physicians was also small, at only 6.9%.

Considering the percentiles, if a provider who scores in the 25th percentile is compared with a colleague who scores in the 75th percentile, they may think the reported satisfaction score differences were quite large. This may potentially invoke feelings of decreased self-worth, negatively impact their professional identity or overall well-being, and they may seek (or be told to seek) improvement opportunities. Now imagine the provider in question realizes the difference between the 25th percentile and 75th percentile is actually only 6.9%. This information may completely change how the results are interpreted and acted upon by administrators. This is further changed with the understanding that 3.3% of the difference may be due to gender alone, narrowing the gap even further. Providers would become understandably frustrated if measures of success such as reimbursement, financial bonus or incentives, promotion, or advancement are linked to these results. It violates the value of fairness and does not offer an equitable starting point.

Evolution of the data distribution. Another consideration, as noted by Robert C. Lloyd, PhD, one of the statisticians who helped develop the percentile statistical analysis mapping in 1985, is that it was based on a classic bell-shaped distribution of patient satisfaction survey scores.¹⁹ Because hospitals, medical groups, and physicians have been working these past 20 years to achieve higher Press Ganey scores, the data no longer have a bell-shaped distribution. Rather, there are significant clusters of raw scores at the high end with a very narrow response range. When these data are mapped to the percentile spectrum, they are highly inaccurate.¹⁹

Impact of sample size. According to Press Ganey, a minimum of 30 survey responses collected over the designated time period is necessary to draw meaningful conclusions of the data for a specific individual, program, or hospital. Despite this requirement to achieve statistical significance, Sullivan and DeLucia found that the firm often provides comparative data about hospital departments and individual physicians based on a smaller sample size that may create an unacceptably large margin of error.²⁰ Sullivan, for example, said his department may only have 8 to 10 Press Ganey survey responses per month and yet still receives monthly reports from the company analyzing the data. Because of the small sample size, 1 month his department ranked in the 1st percentile and 2 months later it ranked in the 99th percentile.²⁰

The effect of a high ceiling rate. A psychometrics report for the Press Ganey survey is available from the vendor that provides vague assessments of reliability and validity based on 2,762 surveys from 12 practices across 10 states. This report describes a 12-question version of the survey with “no problems encountered” with missingness and response variability. The report further states that the Press Ganey survey demonstrates construct, convergent, divergent, and predictive validities, and high reliability; however, these data are not made available.¹

In response to this report, Presson et al analyzed more than 34,000 surveys from one institution to evaluate the reliability and validity of the Press Ganey survey.21 Overall, the survey demonstrated suitable psychometric properties for most metrics. However, Presson et al noted a significantly high ceiling rate of 29.3% for the total score, which ranged from 55.4% to 84.1% across items.²¹ (Ceiling rates are considered substantial if they occur more than 20% of the time.) Ultimately, a high ceiling rate reduces the power to discriminate between patients who have high satisfaction (everyone is “happy”) with those who are just slightly less than happy, but not dissatisfied. This data quality metric can impact the reliability and validity of a survey—and substantial ceiling rates can notably impact percentile rankings of scores within an institution, offering a possible explanation for the small percentage change between the top and bottom percentiles.

Continue to: Other issues with surveys...

Other issues with surveys

In addition to the limitations associated with percentile groupings, survey data are always subject to nonresponse bias, and small sample size can lead to nonsignificant results. Skewed responses also can make it difficult to identify true outlying providers who may need remediation or may be offering a superior patient experience. Satisfaction surveys also lack an assessment of objective data and instead assess how patients perceive and feel, which introduces subjectivity to the results.

Additionally, focusing on improving patient experience ratings can incentivize unnecessary or inappropriate care (ie, overprescribing of narcotics, prescribing antibiotics when not indicated, or ordering testing that may not change management). Some physicians even state that they are not getting the type of feedback that they are asking for and that the survey is not asking the right questions to elicit patient input that is meaningful to their practice. Lastly, the incorporation of trainees and advanced practice providers in the patient care experience leads to the assessment of an alternative provider being included in the ultimate score and may not be representative of that physician.

Patients’ perception and survey results. In some circumstances, the patient’s understanding of their medical situation may affect their responses. Some may argue that patients may mistake a physician’s confidence for competence, when in reality these two entities are mutually exclusive. In a randomized controlled trial, researchers from Mount Sinai School of Medicine and Columbia University Medical Center surveyed inner-city women with newly diagnosed and surgically treated early-stage breast cancer for their perceived quality of care and the process of getting care, including referrals, test results, and treatments. They compared the responses with patient records to determine the actual quality of care. Of the 374 women who received treatment for early-stage breast cancer, 55% said they received “excellent care,” but most—88%—actually got care that was in line with the best current treatment guidelines. Interestingly, the study found African American women were less likely to report excellent care than White or Hispanic women, less likely to trust their doctor, and more likely to say they experienced bias during the process. However, there was no difference in actual quality of care received in any group.²²

You can’t improve what you can’t control. Ultimately, while many providers think patient satisfaction survey results may help inform some aspects of their practice, they cannot improve what they cannot control. For example, the multicenter study by Rogo-Gupta et al found that older patients (≥63 years) have more than a 3-fold increase in odds of giving a top satisfaction score than younger patients (≤33 years), independent of other aspects of the care experience.15 Additionally, they found that older physicians (≥56 years) had a significant increase in odds of receiving a top satisfaction score when compared with physicians who were younger than 55 years old.¹⁵ Given that physicians clearly cannot control their own age or the age of their patients, the negative impacts of these biases need to be addressed and remedied at a systems level.

Why might these biases exist?

While we cannot completely understand all of the possible explanations for these biases, it is important to emphasize the long-standing prejudice and discrimination against women and people of color in our society and how this has impacted our behavior. While strides have been made, there clearly still seems to be a difference between what we say and how our biases impact our behavior. Women are still tougher on women in professional evaluations in other fields as well²³; it is not unique to medicine. While workplace improvements are slowly changing, women still face inequities. The more research we publish to describe it, the more we hope the conversation continues, allowing us to reduce the impact of bias on our sense of self-worth and identity related to our careers, narrow the pay gap, and see women advance at the same rate as male counterparts. Considerable transformation is crucial to prevent further workforce attrition.

With regard to the lower scores provided by Asian patients, studies suggest that cultural response bias, rather than true differences in quality of care, may account for these discrepancies. Previous literature has found that Asian patients are more likely to select midpoints, rather than extremes, when completing Likert-type studies²⁴ and are not more likely to change medical providers than other race/ethnicities, indicating that lower ratings may not necessarily imply greater dissatisfaction with care.²⁵

Far-reaching effects on finances, income, well-being, job satisfaction, etc.

Depending on how the results are distributed and used, the effects of patient satisfaction surveys can extend well beyond the original intentions. At some institutions, income for physicians is directly tied to their Press Ganey satisfaction scores, which could have profound implications for female and Asian physicians,^13,15 who would be paid less—resulting in a wider pay gap than already exists.¹⁸

When negative and not constructive, patient evaluations can contribute to physician burnout and a loss of productive members of the workforce.²⁶ This is especially important in obstetrics and gynecology, where physicians are most likely to experience burnout due to multiple factors such as high-risk medical conditions, pressures of the electronic medical record (EMR), the medicolegal environment, and difficulty balancing patient expectations for autonomy with professional judgement.²⁷ Burnout also disproportionately affects women and younger physicians, which is especially concerning given that, in 2017, approximately one-third of practicing obstetrician/gynecologists were women, while that same year more than 80% of trainees matching into the field were women.²⁸ In one survey sent to members of a prominent medical society, 20% of the medical professionals who responded said they have had their employment threatened by low patient satisfaction scores, 78% reported that patient satisfaction surveys moderately or severely affected their job satisfaction, and 28% stated they had considered quitting their job or leaving the medical profession.²⁹Another related effect is the association between malpractice proceedings and a lack of satisfaction with perceived quality of physician-patient communication.³⁰ This may be an important determinant of malpractice lawsuits, and ensuring high patient satisfaction may be a form of defensive medicine.

Continue to: Controlling the narrative for the future: Proposed strategies...

Controlling the narrative for the future: Proposed strategies

The rapid, widespread adoption of the Press Ganey survey across specialties, clinical care settings, and geographic areas may have been largely due to the ease and operational benefits for hospitals rather than after rigorous study and validation. For example, repeated use of a specific measurement tool may facilitate comparison across areas within a hospital but also across institutions, which can help assess performance at a national level. Hospitals also may have a financial incentive to work with a single third-party or vendor instead of using multiple options across multiple vendors. However, the impact of adoption of novel measures of performance should be evaluated prior to widespread adoption and utilization.

A similar example of an emergence of a technological advancement that has changed the field of medicine and how we provide care is the EMR. Epic is now the most commonly used medical record system and holds the market share of the industry, covering 78% of patients in the United States.³¹ While there are certainly many potential benefits of a common EMR, such as ease of information sharing and standardization of formatting, opportunities are identified in real time and require product adjustment. For example, modifications have been made to accurately represent gender outside of the previously used dichotomous options. Diagnoses such as cervical cancer screening can now be used even if the patient gender is listed as male.

Similarly, the Press Ganey and other patient satisfaction questionnaires should be evaluated and modified to address existing societal biases. The World Health Organization estimates that it will take 300 years to fix gender inequality,³² but we have an opportunity now to control the narrative and improve patient feedback.

Future research avenues

Ultimately, there is a need to further explore currently available methods of evaluating clinical encounters to better understand the inherent biases and limitations. We hope this review will encourage other physicians to examine their specialties and hospitals and require similar analyses from vendors of such satisfaction rating products prior to using them. At the very least, health systems should be willing to partner with vendors and physicians on an ongoing basis to better understand the biases involved in these survey results and make modifications as needed. Patients also obtain information from and contribute to self-reported, publicly available websites; therefore, additional exploration into a nationalized standard for assessing patient satisfaction also may serve as an opportunity to standardize the information patients evaluate.³³ Further assessment of the potential financial and emotional impact of using the currently available patient-reported surveys on female physicians, Asian physicians, young physicians, and physicians who see young patients is needed. It is time to put pressure on a broken patient satisfaction system and improve on a national level to avoid undue negative consequences on our physicians. Use of patient satisfaction survey data should be limited until we all understand and account for the biases that are evident. ●

This year’s menopause Update highlights a highly effective nonhormonal medication that recently received approval by the US Food and Drug Administration (FDA) for the treatment of bothersome menopausal vasomotor symptoms. In addition, the Update provides guidance regarding how ObGyns should respond when an endometrial biopsy for postmenopausal bleeding reveals proliferative changes.

Breakthrough in women’s health: A new nonhormone therapy for vasomotor symptoms

Johnson KA, Martin N, Nappi RE, et al. Efficacy and safety of fezolinetant in moderate-to-severe vasomotor symptoms associated with menopause: a phase 3 RCT. J Clin Endocrinol Metab. 2023;dgad058. doi:10.1210/clinem/dgad058.
 

Lederman S, Ottery FD, Cano A, et al. Fezolinetant for treatment of moderate-to-severe vasomotor symptoms associated with menopause (SKYLIGHT 1): a phase 3 randomised controlled study. Lancet. 2023;401:1091-1102. doi:10.1016/S0140-6736(23)00085-5.

A new oral nonestrogen-containing medication for relief of moderate to severe hot flashes, fezolinetant (Veozah) 45 mg daily, has been approved by the FDA and was expected to be available by the end of May 2023. Fezolinetant is a selective neurokinin 3 (NK3) receptor antagonistthat offers a targeted nonhormonal approach to menopausal vasomotor symptoms (VMS), and it is the first in its class to make it to market.

The decline in estrogen at menopause appears to result in increased signaling at kisspeptin/neurokinin B/dynorphin (KNDy) neurons in the thermoregulatory center within the hypothalamus with resultant increases in hot flashes.^1,2 Fezolinetant works by binding to and blocking the activities of the NK3 receptor.^3-5

Key study findings

Selective NK3 receptor antagonists, including fezolinetant, effectively reduce the frequency and severity of VMS comparable to that of hormone therapy (HT). Two phase 3 clinical trials, Skylight 1 and 2, confirmed the efficacy and safety of fezolinetant 45 mg in treating VMS,^6,7 and an additional 52-week placebo-controlled study, Skylight 4, confirmed long-term safety.⁸ Onset of action occurs within a week. Reported adverse events occurred in 1% to 2% of healthy menopausal women participating in clinical trials; these included headaches, abdominal pain, diarrhea, insomnia, back pain, hot flushes, and reversible elevated hepatic transaminase levels.^6-9

The published phase 2 trials⁹ and the international randomized controlled trial (RCT) 12-week studies, Skylight 1 and 2,^6,7 found that once-daily 30-mg and 45-mg doses of fezolinetant significantly reduced VMS frequency and severity at 12 weeks among women aged 40 to 60 years who reported an average of 7 moderate to severe VMS/day; the reduction in reported VMS was sustained at 40 weeks. Phase 3 data from Skylight 1 and 2 demonstrated fezolinetant’s efficacy in reducing the frequency and severity of VMS and provided information on the safety profile of fezolinetant compared with placebo over 12 weeks and a noncontrolled extension for an additional 40 weeks.^6,7

Oral fezolinetant was associated with improved quality of life, including reduced VMS-related interference with daily life.¹⁰ Johnson and colleagues, reporting for Skylight 2, found VMS frequency and severity improvement by week 1, which achieved statistical significance at weeks 4 and 12, with this improvement maintained through week 52.⁶ A 64.3% reduction in mean daily VMS from baseline was seen at 12 weeks for fezolinetant 45 mg compared with a 45.4% reduction for placebo. VMS severity significantly decreased compared with placebo at 4 and 12 weeks.⁶

Serious treatment-emergent adverse events were infrequent, reported by 2%, 1%, and 0% of those receiving fezolinetant 30 mg, fezolinetant 45 mg, and placebo.⁶ Increases in levels of alanine aminotransferase (ALT) or aspartate aminotransferase (AST) were noted and were described as asymptomatic, isolated, intermittent, or transient, and these levels returned to baseline during treatment or after discontinuation.⁶

Of the 5 participants taking fezolinetant in Skyline 1 with ALT or AST levels greater than 3 times the upper limit of normal in the 12-week randomized trial, levels returned to normal range while continuing treatment in 2 participants, with treatment interruption in 2, and with discontinuation in 1. No new safety signals were seen in the 40-week extension trial.⁶

Continue to: Endometrial and bone safety...

Endometrial and bone safety

Results from Skylight 4, a phase 3, randomized, double-blind, 52-week safety study, provided additional evidence that confirmed the longer-term safety of fezolinetant over a 52-week treatment period.⁸

Endometrial safety was assessed in postmenopausal women with normal baseline endometrium (n = 599).⁸ For fezolinetant 45 mg, 1 of 203 participants had endometrial hyperplasia (EH) (0.5%; upper limit of one-sided 95% confidence interval [CI], 2.3%); no cases of EH were noted in the placebo (0 of 186) or fezolinetant 30-mg (0 of 210) groups. The incidence of EH or malignancy in fezolinetant-treated participants was within prespecified limits, as assessed by blinded, centrally read endometrial biopsies. Endometrial malignancy occurred in 1 of 210 in the fezolinetant 30-mg group (0.5%; 95% CI, 2.2%) with no cases in the other groups, thus meeting FDA requirements for endometrial safety.⁸

In addition, no significant differences were noted in change from baseline endometrial thickness on transvaginal ultrasonography between fezolinetant-treated and placebo groups. Likewise, no loss of bone density was found on dual-energy x-ray absorptiometry (DEXA) scans or trabecular bone scores.⁸

Liver safety

Although no cases of severe liver injury were noted, elevations in serum transaminase concentrations greater than 3 times the upper limit of normal were observed in the clinical trials. In Skylight 4, liver enzyme elevations more than 3 times the upper limit of normal occurred in 6 of 583 participants taking placebo, 8 of 590 taking fezolinetant 30 mg, and 12 of 589 taking fezolinetant 45 mg.⁸

The prescribing information for fezolinetant includes a warning for elevated hepatic transaminases: Fezolinetant should not be started if baseline serum transaminase concentration is equal to or exceeds 2 times the upper limit of normal. Liver tests should be obtained at baseline and repeated every 3 months for the first 9 months and then if symptoms suggest liver injury.^11,12

Unmet need for nonhormone treatment of VMS

Vasomotor symptoms affect up to 80% of women, with approximately 25% bothersome enough to warrant treatment. Vasomotor symptoms persist for a median of 7 years, with duration and severity differing by race and ethnicity. Black, Hispanic, and possibly Native American women experience the highest burden of VMS.² Although VMS, including hot flashes, night sweats, and mood and sleep disturbances, often are considered an annoyance to those with mild symptoms, moderate to severe VMS impact women’s lives, including functioning at home or work, affecting relationships, and decreasing perceived quality of life, and they have been associated with workplace absenteeism and increased health care costs, both direct from medical care and testing and indirect costs from lost work.^13-15

Women with 7 or more daily moderate to severe VMS (defined as with sweating or affecting function) reported interference with sleep (94%), concentration (84%), mood (85%), energy (77%), and sexual activity (61%).¹⁶ Moderately to severely bothersome VMS have been associated with impaired psychological and general well-being, affecting work performance.¹⁷ Based on a Mayo Clinic workplace survey, Faubion and colleagues estimated an annual loss of $1.8 billion in the United States for menopause-related missed work and a $28 billion loss when medical expenses were added.¹⁵

Menopausal HT has been the primary treatment for VMS and has been shown to reduce the frequency and severity of hot flashes, with additional benefits on sleep, mood, fatigue, bone loss and reduction of fracture, and genitourinary syndrome of menopause (GSM), and with potential improvement in cardiovascular health with decreased type 2 diabetes.^18,19 For healthy women with early menopause and no contraindications, HT has been recommended until at least the age of natural menopause, as observational data suggest that HT prevents osteoporosis, cardiovascular disease, neurodegenerative changes, and sexual dysfunction for these women.^19,20 Similarly, for healthy women younger than age 60 or within 10 years of menopause, initiating HT has been shown to be safe and effective in treating bothersome VMS and preventing osteoporotic fractures and genitourinary changes.^19,21

Most systemic HT formulations are inexpensive (for example, available as generics), with multiple dosing and formulations available for use alone or combined as oral, transdermal, or vaginal therapies. Despite the fear that arose for clinicians and women from the initial 2002 findings of the Women’s Health Initiative regarding increased risk of breast cancer, stroke, venous thrombosis, cardiovascular disease, and dementia, major medical societies agree that when initiated at or soon after menopause, HT is a safe and effective therapy to relieve VMS, protect against bone loss, and treat genitourinary changes.^19,21

Many women, however, cannot take HT, including those with estrogen-sensitive cancers, such as breast or uterine cancers; prior cardiovascular disease, stroke, or venous thrombotic events; severe endometriosis; or migraine headaches with visual auras.² In addition, many symptomatic menopausal women without health contraindications choose not to take HT.² Until now, the only FDA-approved VMS nonhormone therapy has been a low-dose 7.5-mg paroxetine salt. Unfortunately, this formulation, along with the off-label use of other antidepressants (selective serotonin reuptake inhibitors and serotonin and norepinephrine reuptake inhibitors), gabapentinoids, oxybutynin, and clonidine, are substantially less effective than HT in treating moderate to severe VMS.

Bottom line

A substantial unmet need remains for effective therapy for moderate to severe VMS for women who cannot or choose not to take menopausal HT to relieve VMS.^2,16 Effective, safe nonhormone treatment options such as the new NK3 receptor antagonist fezolinetant will address this clinically important need.

One concern is that the cost of developing and bringing to market the first of a new type of medication will be passed on to consumers, which may put it out of the price range for the many women who need it. However, the development and FDA approval of fezolinetant as the first NK3 receptor antagonist to treat menopausal VMS is potentially a practice changer. It provides a novel, effective, and safe FDA-approved nonhormonal treatment for menopausal women with moderate to severe VMS, particularly for women who cannot or will not take hormone therapy.

Continue to: When endometrial biopsy for postmenopausal bleeding reveals proliferative changes, how should we respond?...

 

 

When endometrial biopsy for postmenopausal bleeding reveals proliferative changes, how should we respond?

Abraham C. Proliferative endometrium in menopause: to treat or not to treat? Obstet Gynecol. 2023;141:265-267. doi:10.1097/AOG.0000000000005054.

The following case represents a common scenario for ObGyns.

CASE Patient with proliferative endometrial changes

A menopausal patient with a body mass index (BMI) > 30 kg/m² presents with uterine bleeding. She does not use systemic menopausal hormone therapy. Endometrial biopsy indicates proliferative changes.

When endometrial biopsy performed for bleeding reveals proliferative changes in menopausal women, we traditionally have responded by reassuring the patient that the findings are benign and advising that she should let us know if future spotting or bleeding occurs.

However, a recent review by Abraham published in Obstetrics and Gynecology details the implications of proliferative endometrial changes in menopausal patients, advising that treatment, as well as monitoring, may be appropriate.²²

Endometrial changes and what they suggest

In premenopausal women, proliferative endometrial changes are physiologic and result from ovarian estrogen production early in each cycle, during what is called the proliferative (referring to the endometrium) or follicular (referring to the dominant follicle that synthesizes estrogen) phase. In menopausal women who are not using HT, however, proliferative endometrial changes, with orderly uniform glands seen on histologic evaluation, reflect aromatization of androgens by adipose and other tissues into estrogen.

The next step on the continuum to hyperplasia (benign or atypical) after proliferative endometrium is disordered proliferative endometrium. At this stage, histologic evaluation reveals scattered cystic and dilated glands that have a normal gland-to-stroma ratio with a low gland density overall and without any atypia. Randomly distributed glands may have tubal metaplasia or fibrin thrombi associated with microinfarcts, often presenting with irregular bleeding. This is a noncancerous change that occurs with excess estrogen (endogenous or exogenous).²³

Progestins reverse endometrial hyperplasia by activating progesterone receptors, which leads to stromal decidualization with thinning of the endometrium. They have a pronounced effect on the histologic appearance of the endometrium. By contrast, endometrial intraepithelial neoplasia (EIN, previously known as endometrial hyperplasiawith atypia) shows underlying molecular mutations and histologic alterations and represents a sharp transition to true neoplasia, which greatly increases the risk of endometrioid endometrial adenocarcinoma.²⁴

For decades, we have been aware that if women diagnosed with endometrial hyperplasia are not treated with progestational therapy, their future risk of endometrial cancer is elevated. More recently, we also recognize that menopausal women found to have proliferative endometrial changes, if not treated, have an increased risk of endometrial cancer.

In a retrospective cohort study of almost 300 menopausal women who were not treated after endometrial biopsy revealed proliferative changes, investigators followed participants for an average of 11 years.²⁵ These women had a mean BMI of 34 kg/m². During follow-up, almost 12% of these women were diagnosed with endometrial hyperplasia or cancer. This incidence of endometrial neoplasia was some 4 times higher than for women initially found to have atrophic endometrial changes.²⁵

Progestin treatment

Oral progestin therapy with follow-up endometrial biopsy constitutes traditional management for endometrial hyperplasia. Such therapy minimizes the likelihood that hyperplasia will progress to endometrial cancer.

We now recognize that the convenience, as well as the high endometrial progestin levels achieved, with levonorgestrel-releasing intrauterine devices (LNG-IUDs) have advantages over oral progestin therapy in treating endometrial hyperplasia. Indeed, a recent US report found that among women with EIN managed medically, use of progestin-releasing IUDs has grown from 7.7% in 2008 to 35.6% in 2020.²⁶

Although both oral and intrauterine progestin are highly effective in treating simple hyperplasia, progestin IUDs are substantially more effective than oral progestins in treating EIN.²⁷ Progestin concentrations in the endometrium have been shown to be 100-fold higher after LNG-IUD placement compared with oral progestin use.²² In addition, adverse effects, including bloating, unpleasant mood changes, and increased appetite, are more common with oral than intrauterine progestin therapy.²⁸

Unfortunately, data from randomized trials addressing progestational treatment of proliferative endometrium in menopausal women are not available to support the treatment of proliferative endometrium with either oral progestins or the LNG-IUD.²²

Role of ultrasonography

Another concern is relying on a finding of thin endometrial thickness on vaginal ultrasonography. In a simulated retrospective cohort study, use of transvaginal ultrasonography to determine the appropriateness of a biopsy was found not to be sufficiently accurate or racially equitable with regard to Black women.²⁹ In simulated data, transvaginal ultrasonography missed almost 5 times more cases of endometrial cancer among Black women compared with White women due to higher fibroid prevalence and nonendometrioid histologic type malignancies in Black women.²⁹

Assessing risk

If proliferative endometrium is found, Abraham suggests assessing risk using²²:

• age
• comorbidities (including obesity)
• endometrial echo thickness on vaginal ultrasonography.

Consider the patient’s risk and tolerance of recurrent bleeding as well as her tolerance for progestational adverse effects if medical therapy is chosen. Discussion about next steps should include reviewing the histologic findings with the patient and discussing the difference in risk of progression to endometrial cancer of a finding of proliferative endometrium compared with a histologic finding of endometrial hyperplasia.

Using this patient-centered approach, observation over time with follow-up endometrial biopsies remains a management option. Although some women may tolerate micronized progesterone over synthetic progestins, there is concern that it may be less effective in suppressing the endometrium than synthetic progestins.³⁰ Accordingly, synthetic progestins represent first-line options in this setting^.

In her review, Abraham suggests that when endometrial biopsy reveals proliferative changes in a menopausal woman, we should initiate progestin treatment and perform surveillance endometrial sampling every 3 to 6 months. If such sampling reveals benign but not proliferative endometrium, progestin therapy can be stopped and endometrial biopsy repeated if bleeding recurs.²² ●

This year’s menopause Update highlights a highly effective nonhormonal medication that recently received approval by the US Food and Drug Administration (FDA) for the treatment of bothersome menopausal vasomotor symptoms. In addition, the Update provides guidance regarding how ObGyns should respond when an endometrial biopsy for postmenopausal bleeding reveals proliferative changes.

Breakthrough in women’s health: A new nonhormone therapy for vasomotor symptoms

Johnson KA, Martin N, Nappi RE, et al. Efficacy and safety of fezolinetant in moderate-to-severe vasomotor symptoms associated with menopause: a phase 3 RCT. J Clin Endocrinol Metab. 2023;dgad058. doi:10.1210/clinem/dgad058.
 

Lederman S, Ottery FD, Cano A, et al. Fezolinetant for treatment of moderate-to-severe vasomotor symptoms associated with menopause (SKYLIGHT 1): a phase 3 randomised controlled study. Lancet. 2023;401:1091-1102. doi:10.1016/S0140-6736(23)00085-5.

A new oral nonestrogen-containing medication for relief of moderate to severe hot flashes, fezolinetant (Veozah) 45 mg daily, has been approved by the FDA and was expected to be available by the end of May 2023. Fezolinetant is a selective neurokinin 3 (NK3) receptor antagonistthat offers a targeted nonhormonal approach to menopausal vasomotor symptoms (VMS), and it is the first in its class to make it to market.

The decline in estrogen at menopause appears to result in increased signaling at kisspeptin/neurokinin B/dynorphin (KNDy) neurons in the thermoregulatory center within the hypothalamus with resultant increases in hot flashes.^1,2 Fezolinetant works by binding to and blocking the activities of the NK3 receptor.^3-5

Key study findings

Selective NK3 receptor antagonists, including fezolinetant, effectively reduce the frequency and severity of VMS comparable to that of hormone therapy (HT). Two phase 3 clinical trials, Skylight 1 and 2, confirmed the efficacy and safety of fezolinetant 45 mg in treating VMS,^6,7 and an additional 52-week placebo-controlled study, Skylight 4, confirmed long-term safety.⁸ Onset of action occurs within a week. Reported adverse events occurred in 1% to 2% of healthy menopausal women participating in clinical trials; these included headaches, abdominal pain, diarrhea, insomnia, back pain, hot flushes, and reversible elevated hepatic transaminase levels.^6-9

The published phase 2 trials⁹ and the international randomized controlled trial (RCT) 12-week studies, Skylight 1 and 2,^6,7 found that once-daily 30-mg and 45-mg doses of fezolinetant significantly reduced VMS frequency and severity at 12 weeks among women aged 40 to 60 years who reported an average of 7 moderate to severe VMS/day; the reduction in reported VMS was sustained at 40 weeks. Phase 3 data from Skylight 1 and 2 demonstrated fezolinetant’s efficacy in reducing the frequency and severity of VMS and provided information on the safety profile of fezolinetant compared with placebo over 12 weeks and a noncontrolled extension for an additional 40 weeks.^6,7

Oral fezolinetant was associated with improved quality of life, including reduced VMS-related interference with daily life.¹⁰ Johnson and colleagues, reporting for Skylight 2, found VMS frequency and severity improvement by week 1, which achieved statistical significance at weeks 4 and 12, with this improvement maintained through week 52.⁶ A 64.3% reduction in mean daily VMS from baseline was seen at 12 weeks for fezolinetant 45 mg compared with a 45.4% reduction for placebo. VMS severity significantly decreased compared with placebo at 4 and 12 weeks.⁶

Serious treatment-emergent adverse events were infrequent, reported by 2%, 1%, and 0% of those receiving fezolinetant 30 mg, fezolinetant 45 mg, and placebo.⁶ Increases in levels of alanine aminotransferase (ALT) or aspartate aminotransferase (AST) were noted and were described as asymptomatic, isolated, intermittent, or transient, and these levels returned to baseline during treatment or after discontinuation.⁶

Of the 5 participants taking fezolinetant in Skyline 1 with ALT or AST levels greater than 3 times the upper limit of normal in the 12-week randomized trial, levels returned to normal range while continuing treatment in 2 participants, with treatment interruption in 2, and with discontinuation in 1. No new safety signals were seen in the 40-week extension trial.⁶

Continue to: Endometrial and bone safety...

Endometrial and bone safety

Results from Skylight 4, a phase 3, randomized, double-blind, 52-week safety study, provided additional evidence that confirmed the longer-term safety of fezolinetant over a 52-week treatment period.⁸

Endometrial safety was assessed in postmenopausal women with normal baseline endometrium (n = 599).⁸ For fezolinetant 45 mg, 1 of 203 participants had endometrial hyperplasia (EH) (0.5%; upper limit of one-sided 95% confidence interval [CI], 2.3%); no cases of EH were noted in the placebo (0 of 186) or fezolinetant 30-mg (0 of 210) groups. The incidence of EH or malignancy in fezolinetant-treated participants was within prespecified limits, as assessed by blinded, centrally read endometrial biopsies. Endometrial malignancy occurred in 1 of 210 in the fezolinetant 30-mg group (0.5%; 95% CI, 2.2%) with no cases in the other groups, thus meeting FDA requirements for endometrial safety.⁸

In addition, no significant differences were noted in change from baseline endometrial thickness on transvaginal ultrasonography between fezolinetant-treated and placebo groups. Likewise, no loss of bone density was found on dual-energy x-ray absorptiometry (DEXA) scans or trabecular bone scores.⁸

Liver safety

Although no cases of severe liver injury were noted, elevations in serum transaminase concentrations greater than 3 times the upper limit of normal were observed in the clinical trials. In Skylight 4, liver enzyme elevations more than 3 times the upper limit of normal occurred in 6 of 583 participants taking placebo, 8 of 590 taking fezolinetant 30 mg, and 12 of 589 taking fezolinetant 45 mg.⁸

The prescribing information for fezolinetant includes a warning for elevated hepatic transaminases: Fezolinetant should not be started if baseline serum transaminase concentration is equal to or exceeds 2 times the upper limit of normal. Liver tests should be obtained at baseline and repeated every 3 months for the first 9 months and then if symptoms suggest liver injury.^11,12

Unmet need for nonhormone treatment of VMS

Vasomotor symptoms affect up to 80% of women, with approximately 25% bothersome enough to warrant treatment. Vasomotor symptoms persist for a median of 7 years, with duration and severity differing by race and ethnicity. Black, Hispanic, and possibly Native American women experience the highest burden of VMS.² Although VMS, including hot flashes, night sweats, and mood and sleep disturbances, often are considered an annoyance to those with mild symptoms, moderate to severe VMS impact women’s lives, including functioning at home or work, affecting relationships, and decreasing perceived quality of life, and they have been associated with workplace absenteeism and increased health care costs, both direct from medical care and testing and indirect costs from lost work.^13-15

Women with 7 or more daily moderate to severe VMS (defined as with sweating or affecting function) reported interference with sleep (94%), concentration (84%), mood (85%), energy (77%), and sexual activity (61%).¹⁶ Moderately to severely bothersome VMS have been associated with impaired psychological and general well-being, affecting work performance.¹⁷ Based on a Mayo Clinic workplace survey, Faubion and colleagues estimated an annual loss of $1.8 billion in the United States for menopause-related missed work and a $28 billion loss when medical expenses were added.¹⁵

Menopausal HT has been the primary treatment for VMS and has been shown to reduce the frequency and severity of hot flashes, with additional benefits on sleep, mood, fatigue, bone loss and reduction of fracture, and genitourinary syndrome of menopause (GSM), and with potential improvement in cardiovascular health with decreased type 2 diabetes.^18,19 For healthy women with early menopause and no contraindications, HT has been recommended until at least the age of natural menopause, as observational data suggest that HT prevents osteoporosis, cardiovascular disease, neurodegenerative changes, and sexual dysfunction for these women.^19,20 Similarly, for healthy women younger than age 60 or within 10 years of menopause, initiating HT has been shown to be safe and effective in treating bothersome VMS and preventing osteoporotic fractures and genitourinary changes.^19,21

Most systemic HT formulations are inexpensive (for example, available as generics), with multiple dosing and formulations available for use alone or combined as oral, transdermal, or vaginal therapies. Despite the fear that arose for clinicians and women from the initial 2002 findings of the Women’s Health Initiative regarding increased risk of breast cancer, stroke, venous thrombosis, cardiovascular disease, and dementia, major medical societies agree that when initiated at or soon after menopause, HT is a safe and effective therapy to relieve VMS, protect against bone loss, and treat genitourinary changes.^19,21

Many women, however, cannot take HT, including those with estrogen-sensitive cancers, such as breast or uterine cancers; prior cardiovascular disease, stroke, or venous thrombotic events; severe endometriosis; or migraine headaches with visual auras.² In addition, many symptomatic menopausal women without health contraindications choose not to take HT.² Until now, the only FDA-approved VMS nonhormone therapy has been a low-dose 7.5-mg paroxetine salt. Unfortunately, this formulation, along with the off-label use of other antidepressants (selective serotonin reuptake inhibitors and serotonin and norepinephrine reuptake inhibitors), gabapentinoids, oxybutynin, and clonidine, are substantially less effective than HT in treating moderate to severe VMS.

Bottom line

A substantial unmet need remains for effective therapy for moderate to severe VMS for women who cannot or choose not to take menopausal HT to relieve VMS.^2,16 Effective, safe nonhormone treatment options such as the new NK3 receptor antagonist fezolinetant will address this clinically important need.

One concern is that the cost of developing and bringing to market the first of a new type of medication will be passed on to consumers, which may put it out of the price range for the many women who need it. However, the development and FDA approval of fezolinetant as the first NK3 receptor antagonist to treat menopausal VMS is potentially a practice changer. It provides a novel, effective, and safe FDA-approved nonhormonal treatment for menopausal women with moderate to severe VMS, particularly for women who cannot or will not take hormone therapy.

Continue to: When endometrial biopsy for postmenopausal bleeding reveals proliferative changes, how should we respond?...

 

 

When endometrial biopsy for postmenopausal bleeding reveals proliferative changes, how should we respond?

Abraham C. Proliferative endometrium in menopause: to treat or not to treat? Obstet Gynecol. 2023;141:265-267. doi:10.1097/AOG.0000000000005054.

The following case represents a common scenario for ObGyns.

CASE Patient with proliferative endometrial changes

A menopausal patient with a body mass index (BMI) > 30 kg/m² presents with uterine bleeding. She does not use systemic menopausal hormone therapy. Endometrial biopsy indicates proliferative changes.

When endometrial biopsy performed for bleeding reveals proliferative changes in menopausal women, we traditionally have responded by reassuring the patient that the findings are benign and advising that she should let us know if future spotting or bleeding occurs.

However, a recent review by Abraham published in Obstetrics and Gynecology details the implications of proliferative endometrial changes in menopausal patients, advising that treatment, as well as monitoring, may be appropriate.²²

Endometrial changes and what they suggest

In premenopausal women, proliferative endometrial changes are physiologic and result from ovarian estrogen production early in each cycle, during what is called the proliferative (referring to the endometrium) or follicular (referring to the dominant follicle that synthesizes estrogen) phase. In menopausal women who are not using HT, however, proliferative endometrial changes, with orderly uniform glands seen on histologic evaluation, reflect aromatization of androgens by adipose and other tissues into estrogen.

The next step on the continuum to hyperplasia (benign or atypical) after proliferative endometrium is disordered proliferative endometrium. At this stage, histologic evaluation reveals scattered cystic and dilated glands that have a normal gland-to-stroma ratio with a low gland density overall and without any atypia. Randomly distributed glands may have tubal metaplasia or fibrin thrombi associated with microinfarcts, often presenting with irregular bleeding. This is a noncancerous change that occurs with excess estrogen (endogenous or exogenous).²³

Progestins reverse endometrial hyperplasia by activating progesterone receptors, which leads to stromal decidualization with thinning of the endometrium. They have a pronounced effect on the histologic appearance of the endometrium. By contrast, endometrial intraepithelial neoplasia (EIN, previously known as endometrial hyperplasiawith atypia) shows underlying molecular mutations and histologic alterations and represents a sharp transition to true neoplasia, which greatly increases the risk of endometrioid endometrial adenocarcinoma.²⁴

For decades, we have been aware that if women diagnosed with endometrial hyperplasia are not treated with progestational therapy, their future risk of endometrial cancer is elevated. More recently, we also recognize that menopausal women found to have proliferative endometrial changes, if not treated, have an increased risk of endometrial cancer.

In a retrospective cohort study of almost 300 menopausal women who were not treated after endometrial biopsy revealed proliferative changes, investigators followed participants for an average of 11 years.²⁵ These women had a mean BMI of 34 kg/m². During follow-up, almost 12% of these women were diagnosed with endometrial hyperplasia or cancer. This incidence of endometrial neoplasia was some 4 times higher than for women initially found to have atrophic endometrial changes.²⁵

Progestin treatment

Oral progestin therapy with follow-up endometrial biopsy constitutes traditional management for endometrial hyperplasia. Such therapy minimizes the likelihood that hyperplasia will progress to endometrial cancer.

We now recognize that the convenience, as well as the high endometrial progestin levels achieved, with levonorgestrel-releasing intrauterine devices (LNG-IUDs) have advantages over oral progestin therapy in treating endometrial hyperplasia. Indeed, a recent US report found that among women with EIN managed medically, use of progestin-releasing IUDs has grown from 7.7% in 2008 to 35.6% in 2020.²⁶

Although both oral and intrauterine progestin are highly effective in treating simple hyperplasia, progestin IUDs are substantially more effective than oral progestins in treating EIN.²⁷ Progestin concentrations in the endometrium have been shown to be 100-fold higher after LNG-IUD placement compared with oral progestin use.²² In addition, adverse effects, including bloating, unpleasant mood changes, and increased appetite, are more common with oral than intrauterine progestin therapy.²⁸

Unfortunately, data from randomized trials addressing progestational treatment of proliferative endometrium in menopausal women are not available to support the treatment of proliferative endometrium with either oral progestins or the LNG-IUD.²²

Role of ultrasonography

Another concern is relying on a finding of thin endometrial thickness on vaginal ultrasonography. In a simulated retrospective cohort study, use of transvaginal ultrasonography to determine the appropriateness of a biopsy was found not to be sufficiently accurate or racially equitable with regard to Black women.²⁹ In simulated data, transvaginal ultrasonography missed almost 5 times more cases of endometrial cancer among Black women compared with White women due to higher fibroid prevalence and nonendometrioid histologic type malignancies in Black women.²⁹

Assessing risk

If proliferative endometrium is found, Abraham suggests assessing risk using²²:

• age
• comorbidities (including obesity)
• endometrial echo thickness on vaginal ultrasonography.

Consider the patient’s risk and tolerance of recurrent bleeding as well as her tolerance for progestational adverse effects if medical therapy is chosen. Discussion about next steps should include reviewing the histologic findings with the patient and discussing the difference in risk of progression to endometrial cancer of a finding of proliferative endometrium compared with a histologic finding of endometrial hyperplasia.

Using this patient-centered approach, observation over time with follow-up endometrial biopsies remains a management option. Although some women may tolerate micronized progesterone over synthetic progestins, there is concern that it may be less effective in suppressing the endometrium than synthetic progestins.³⁰ Accordingly, synthetic progestins represent first-line options in this setting^.

In her review, Abraham suggests that when endometrial biopsy reveals proliferative changes in a menopausal woman, we should initiate progestin treatment and perform surveillance endometrial sampling every 3 to 6 months. If such sampling reveals benign but not proliferative endometrium, progestin therapy can be stopped and endometrial biopsy repeated if bleeding recurs.²² ●

This year’s menopause Update highlights a highly effective nonhormonal medication that recently received approval by the US Food and Drug Administration (FDA) for the treatment of bothersome menopausal vasomotor symptoms. In addition, the Update provides guidance regarding how ObGyns should respond when an endometrial biopsy for postmenopausal bleeding reveals proliferative changes.

Breakthrough in women’s health: A new nonhormone therapy for vasomotor symptoms

Johnson KA, Martin N, Nappi RE, et al. Efficacy and safety of fezolinetant in moderate-to-severe vasomotor symptoms associated with menopause: a phase 3 RCT. J Clin Endocrinol Metab. 2023;dgad058. doi:10.1210/clinem/dgad058.
 

Lederman S, Ottery FD, Cano A, et al. Fezolinetant for treatment of moderate-to-severe vasomotor symptoms associated with menopause (SKYLIGHT 1): a phase 3 randomised controlled study. Lancet. 2023;401:1091-1102. doi:10.1016/S0140-6736(23)00085-5.

A new oral nonestrogen-containing medication for relief of moderate to severe hot flashes, fezolinetant (Veozah) 45 mg daily, has been approved by the FDA and was expected to be available by the end of May 2023. Fezolinetant is a selective neurokinin 3 (NK3) receptor antagonistthat offers a targeted nonhormonal approach to menopausal vasomotor symptoms (VMS), and it is the first in its class to make it to market.

The decline in estrogen at menopause appears to result in increased signaling at kisspeptin/neurokinin B/dynorphin (KNDy) neurons in the thermoregulatory center within the hypothalamus with resultant increases in hot flashes.^1,2 Fezolinetant works by binding to and blocking the activities of the NK3 receptor.^3-5

Key study findings

Selective NK3 receptor antagonists, including fezolinetant, effectively reduce the frequency and severity of VMS comparable to that of hormone therapy (HT). Two phase 3 clinical trials, Skylight 1 and 2, confirmed the efficacy and safety of fezolinetant 45 mg in treating VMS,^6,7 and an additional 52-week placebo-controlled study, Skylight 4, confirmed long-term safety.⁸ Onset of action occurs within a week. Reported adverse events occurred in 1% to 2% of healthy menopausal women participating in clinical trials; these included headaches, abdominal pain, diarrhea, insomnia, back pain, hot flushes, and reversible elevated hepatic transaminase levels.^6-9

The published phase 2 trials⁹ and the international randomized controlled trial (RCT) 12-week studies, Skylight 1 and 2,^6,7 found that once-daily 30-mg and 45-mg doses of fezolinetant significantly reduced VMS frequency and severity at 12 weeks among women aged 40 to 60 years who reported an average of 7 moderate to severe VMS/day; the reduction in reported VMS was sustained at 40 weeks. Phase 3 data from Skylight 1 and 2 demonstrated fezolinetant’s efficacy in reducing the frequency and severity of VMS and provided information on the safety profile of fezolinetant compared with placebo over 12 weeks and a noncontrolled extension for an additional 40 weeks.^6,7

Oral fezolinetant was associated with improved quality of life, including reduced VMS-related interference with daily life.¹⁰ Johnson and colleagues, reporting for Skylight 2, found VMS frequency and severity improvement by week 1, which achieved statistical significance at weeks 4 and 12, with this improvement maintained through week 52.⁶ A 64.3% reduction in mean daily VMS from baseline was seen at 12 weeks for fezolinetant 45 mg compared with a 45.4% reduction for placebo. VMS severity significantly decreased compared with placebo at 4 and 12 weeks.⁶

Serious treatment-emergent adverse events were infrequent, reported by 2%, 1%, and 0% of those receiving fezolinetant 30 mg, fezolinetant 45 mg, and placebo.⁶ Increases in levels of alanine aminotransferase (ALT) or aspartate aminotransferase (AST) were noted and were described as asymptomatic, isolated, intermittent, or transient, and these levels returned to baseline during treatment or after discontinuation.⁶

Of the 5 participants taking fezolinetant in Skyline 1 with ALT or AST levels greater than 3 times the upper limit of normal in the 12-week randomized trial, levels returned to normal range while continuing treatment in 2 participants, with treatment interruption in 2, and with discontinuation in 1. No new safety signals were seen in the 40-week extension trial.⁶

Continue to: Endometrial and bone safety...

Endometrial and bone safety

Results from Skylight 4, a phase 3, randomized, double-blind, 52-week safety study, provided additional evidence that confirmed the longer-term safety of fezolinetant over a 52-week treatment period.⁸

Endometrial safety was assessed in postmenopausal women with normal baseline endometrium (n = 599).⁸ For fezolinetant 45 mg, 1 of 203 participants had endometrial hyperplasia (EH) (0.5%; upper limit of one-sided 95% confidence interval [CI], 2.3%); no cases of EH were noted in the placebo (0 of 186) or fezolinetant 30-mg (0 of 210) groups. The incidence of EH or malignancy in fezolinetant-treated participants was within prespecified limits, as assessed by blinded, centrally read endometrial biopsies. Endometrial malignancy occurred in 1 of 210 in the fezolinetant 30-mg group (0.5%; 95% CI, 2.2%) with no cases in the other groups, thus meeting FDA requirements for endometrial safety.⁸

In addition, no significant differences were noted in change from baseline endometrial thickness on transvaginal ultrasonography between fezolinetant-treated and placebo groups. Likewise, no loss of bone density was found on dual-energy x-ray absorptiometry (DEXA) scans or trabecular bone scores.⁸

Liver safety

Although no cases of severe liver injury were noted, elevations in serum transaminase concentrations greater than 3 times the upper limit of normal were observed in the clinical trials. In Skylight 4, liver enzyme elevations more than 3 times the upper limit of normal occurred in 6 of 583 participants taking placebo, 8 of 590 taking fezolinetant 30 mg, and 12 of 589 taking fezolinetant 45 mg.⁸

The prescribing information for fezolinetant includes a warning for elevated hepatic transaminases: Fezolinetant should not be started if baseline serum transaminase concentration is equal to or exceeds 2 times the upper limit of normal. Liver tests should be obtained at baseline and repeated every 3 months for the first 9 months and then if symptoms suggest liver injury.^11,12

Unmet need for nonhormone treatment of VMS

Vasomotor symptoms affect up to 80% of women, with approximately 25% bothersome enough to warrant treatment. Vasomotor symptoms persist for a median of 7 years, with duration and severity differing by race and ethnicity. Black, Hispanic, and possibly Native American women experience the highest burden of VMS.² Although VMS, including hot flashes, night sweats, and mood and sleep disturbances, often are considered an annoyance to those with mild symptoms, moderate to severe VMS impact women’s lives, including functioning at home or work, affecting relationships, and decreasing perceived quality of life, and they have been associated with workplace absenteeism and increased health care costs, both direct from medical care and testing and indirect costs from lost work.^13-15

Women with 7 or more daily moderate to severe VMS (defined as with sweating or affecting function) reported interference with sleep (94%), concentration (84%), mood (85%), energy (77%), and sexual activity (61%).¹⁶ Moderately to severely bothersome VMS have been associated with impaired psychological and general well-being, affecting work performance.¹⁷ Based on a Mayo Clinic workplace survey, Faubion and colleagues estimated an annual loss of $1.8 billion in the United States for menopause-related missed work and a $28 billion loss when medical expenses were added.¹⁵

Menopausal HT has been the primary treatment for VMS and has been shown to reduce the frequency and severity of hot flashes, with additional benefits on sleep, mood, fatigue, bone loss and reduction of fracture, and genitourinary syndrome of menopause (GSM), and with potential improvement in cardiovascular health with decreased type 2 diabetes.^18,19 For healthy women with early menopause and no contraindications, HT has been recommended until at least the age of natural menopause, as observational data suggest that HT prevents osteoporosis, cardiovascular disease, neurodegenerative changes, and sexual dysfunction for these women.^19,20 Similarly, for healthy women younger than age 60 or within 10 years of menopause, initiating HT has been shown to be safe and effective in treating bothersome VMS and preventing osteoporotic fractures and genitourinary changes.^19,21

Most systemic HT formulations are inexpensive (for example, available as generics), with multiple dosing and formulations available for use alone or combined as oral, transdermal, or vaginal therapies. Despite the fear that arose for clinicians and women from the initial 2002 findings of the Women’s Health Initiative regarding increased risk of breast cancer, stroke, venous thrombosis, cardiovascular disease, and dementia, major medical societies agree that when initiated at or soon after menopause, HT is a safe and effective therapy to relieve VMS, protect against bone loss, and treat genitourinary changes.^19,21

Many women, however, cannot take HT, including those with estrogen-sensitive cancers, such as breast or uterine cancers; prior cardiovascular disease, stroke, or venous thrombotic events; severe endometriosis; or migraine headaches with visual auras.² In addition, many symptomatic menopausal women without health contraindications choose not to take HT.² Until now, the only FDA-approved VMS nonhormone therapy has been a low-dose 7.5-mg paroxetine salt. Unfortunately, this formulation, along with the off-label use of other antidepressants (selective serotonin reuptake inhibitors and serotonin and norepinephrine reuptake inhibitors), gabapentinoids, oxybutynin, and clonidine, are substantially less effective than HT in treating moderate to severe VMS.

Bottom line

A substantial unmet need remains for effective therapy for moderate to severe VMS for women who cannot or choose not to take menopausal HT to relieve VMS.^2,16 Effective, safe nonhormone treatment options such as the new NK3 receptor antagonist fezolinetant will address this clinically important need.

One concern is that the cost of developing and bringing to market the first of a new type of medication will be passed on to consumers, which may put it out of the price range for the many women who need it. However, the development and FDA approval of fezolinetant as the first NK3 receptor antagonist to treat menopausal VMS is potentially a practice changer. It provides a novel, effective, and safe FDA-approved nonhormonal treatment for menopausal women with moderate to severe VMS, particularly for women who cannot or will not take hormone therapy.

Continue to: When endometrial biopsy for postmenopausal bleeding reveals proliferative changes, how should we respond?...

 

 

When endometrial biopsy for postmenopausal bleeding reveals proliferative changes, how should we respond?

Abraham C. Proliferative endometrium in menopause: to treat or not to treat? Obstet Gynecol. 2023;141:265-267. doi:10.1097/AOG.0000000000005054.

The following case represents a common scenario for ObGyns.

CASE Patient with proliferative endometrial changes

A menopausal patient with a body mass index (BMI) > 30 kg/m² presents with uterine bleeding. She does not use systemic menopausal hormone therapy. Endometrial biopsy indicates proliferative changes.

When endometrial biopsy performed for bleeding reveals proliferative changes in menopausal women, we traditionally have responded by reassuring the patient that the findings are benign and advising that she should let us know if future spotting or bleeding occurs.

However, a recent review by Abraham published in Obstetrics and Gynecology details the implications of proliferative endometrial changes in menopausal patients, advising that treatment, as well as monitoring, may be appropriate.²²

Endometrial changes and what they suggest

In premenopausal women, proliferative endometrial changes are physiologic and result from ovarian estrogen production early in each cycle, during what is called the proliferative (referring to the endometrium) or follicular (referring to the dominant follicle that synthesizes estrogen) phase. In menopausal women who are not using HT, however, proliferative endometrial changes, with orderly uniform glands seen on histologic evaluation, reflect aromatization of androgens by adipose and other tissues into estrogen.

The next step on the continuum to hyperplasia (benign or atypical) after proliferative endometrium is disordered proliferative endometrium. At this stage, histologic evaluation reveals scattered cystic and dilated glands that have a normal gland-to-stroma ratio with a low gland density overall and without any atypia. Randomly distributed glands may have tubal metaplasia or fibrin thrombi associated with microinfarcts, often presenting with irregular bleeding. This is a noncancerous change that occurs with excess estrogen (endogenous or exogenous).²³

Progestins reverse endometrial hyperplasia by activating progesterone receptors, which leads to stromal decidualization with thinning of the endometrium. They have a pronounced effect on the histologic appearance of the endometrium. By contrast, endometrial intraepithelial neoplasia (EIN, previously known as endometrial hyperplasiawith atypia) shows underlying molecular mutations and histologic alterations and represents a sharp transition to true neoplasia, which greatly increases the risk of endometrioid endometrial adenocarcinoma.²⁴

For decades, we have been aware that if women diagnosed with endometrial hyperplasia are not treated with progestational therapy, their future risk of endometrial cancer is elevated. More recently, we also recognize that menopausal women found to have proliferative endometrial changes, if not treated, have an increased risk of endometrial cancer.

In a retrospective cohort study of almost 300 menopausal women who were not treated after endometrial biopsy revealed proliferative changes, investigators followed participants for an average of 11 years.²⁵ These women had a mean BMI of 34 kg/m². During follow-up, almost 12% of these women were diagnosed with endometrial hyperplasia or cancer. This incidence of endometrial neoplasia was some 4 times higher than for women initially found to have atrophic endometrial changes.²⁵

Progestin treatment

Oral progestin therapy with follow-up endometrial biopsy constitutes traditional management for endometrial hyperplasia. Such therapy minimizes the likelihood that hyperplasia will progress to endometrial cancer.

We now recognize that the convenience, as well as the high endometrial progestin levels achieved, with levonorgestrel-releasing intrauterine devices (LNG-IUDs) have advantages over oral progestin therapy in treating endometrial hyperplasia. Indeed, a recent US report found that among women with EIN managed medically, use of progestin-releasing IUDs has grown from 7.7% in 2008 to 35.6% in 2020.²⁶

Although both oral and intrauterine progestin are highly effective in treating simple hyperplasia, progestin IUDs are substantially more effective than oral progestins in treating EIN.²⁷ Progestin concentrations in the endometrium have been shown to be 100-fold higher after LNG-IUD placement compared with oral progestin use.²² In addition, adverse effects, including bloating, unpleasant mood changes, and increased appetite, are more common with oral than intrauterine progestin therapy.²⁸

Unfortunately, data from randomized trials addressing progestational treatment of proliferative endometrium in menopausal women are not available to support the treatment of proliferative endometrium with either oral progestins or the LNG-IUD.²²

Role of ultrasonography

Another concern is relying on a finding of thin endometrial thickness on vaginal ultrasonography. In a simulated retrospective cohort study, use of transvaginal ultrasonography to determine the appropriateness of a biopsy was found not to be sufficiently accurate or racially equitable with regard to Black women.²⁹ In simulated data, transvaginal ultrasonography missed almost 5 times more cases of endometrial cancer among Black women compared with White women due to higher fibroid prevalence and nonendometrioid histologic type malignancies in Black women.²⁹

Assessing risk

If proliferative endometrium is found, Abraham suggests assessing risk using²²:

• age
• comorbidities (including obesity)
• endometrial echo thickness on vaginal ultrasonography.

Consider the patient’s risk and tolerance of recurrent bleeding as well as her tolerance for progestational adverse effects if medical therapy is chosen. Discussion about next steps should include reviewing the histologic findings with the patient and discussing the difference in risk of progression to endometrial cancer of a finding of proliferative endometrium compared with a histologic finding of endometrial hyperplasia.

Using this patient-centered approach, observation over time with follow-up endometrial biopsies remains a management option. Although some women may tolerate micronized progesterone over synthetic progestins, there is concern that it may be less effective in suppressing the endometrium than synthetic progestins.³⁰ Accordingly, synthetic progestins represent first-line options in this setting^.

In her review, Abraham suggests that when endometrial biopsy reveals proliferative changes in a menopausal woman, we should initiate progestin treatment and perform surveillance endometrial sampling every 3 to 6 months. If such sampling reveals benign but not proliferative endometrium, progestin therapy can be stopped and endometrial biopsy repeated if bleeding recurs.²² ●

In 2022, the most significant advances in the treatment of gynecologic cancers were achieved for patients with ovarian cancer. While ovarian cancer continues to carry the worst prognosis of all gynecologic cancers, 5-year relative survival has gradually increased, from 34.4% in 1975 to 52.4% in 2014.¹

In this Update, we highlight the recent advances in our understanding of targeted therapy in ovarian cancer. We review SORAYA, a trial that demonstrated that mirvetuximab soravtansine, an antibody-drug conjugate, has promising efficacy in platinum-resistant ovarian cancers that overexpress folate receptor α. We also spotlight progress in the treatment of low-grade serous ovarian cancer, another notoriously chemotherapy-resistant disease, in GOG 281/LOGS, a phase 2 study of the MEK inhibitor trametinib. Finally, we discuss emerging long-term follow-up data on poly(ADP-ribose) polymerase (PARP) inhibitors, which are helping to refine the role of these groundbreaking drugs.

New drug approved for platinum-resistant epithelial ovarian cancer—the first since 2014

Matulonis UA, Lorusso D, Oaknin A, et al. Efficacy and safety of mirvetuximab soravtansine in patients with platinum-resistant ovarian cancer with high folate receptor alpha expression: results from the SORAYA study. J Clin Oncol. 2023;41:2436-2445. doi:10.1200/JCO.22.01900.

While most patients diagnosed with advanced ovarian cancer will respond to platinum-based chemotherapy, those whose disease recurs eventually develop resistance to platinum agents. Treatment options for platinum-resistant ovarian cancer are limited and prognosis is poor. Most regimens have a response rate of only 10%. Since the approval of bevacizumab combined with chemotherapy in 2014, no new agents have been approved by the US Food and Drug Administration (FDA) for use in platinum-resistant ovarian cancer.

Efficacy shown with mirvetuximab

Recently, Matulonis and colleagues published results of the SORAYA study, a single-arm,phase 2 trial, that examined the efficacy and safety of mirvetuximab soravtansine-gynx among women with platinum-resistant ovarian cancer.² Mirvetuximab is an antibody-drug conjugate composed of an antibody directed at the folate receptor α attached to a cytotoxic microtubule inhibitor.

The study included 106 patients with platinum-resistant ovarian cancer whose tumors expressed folate receptor α at a high level—a feature of approximately 50% of patients screened for the study. Twenty-nine patients experienced a partial response and 5 had a complete response, corresponding to a remarkable objective response rate of 32.4%. The median progression-free survival was 4.3 months.

Like other antibody-drug conjugates, ocular toxicities, including blurred vision (41%) and keratopathy (29%), were common. However, toxicity was manageable and rarely led to drug discontinuation.

Continue to: A novel agent for recurrent low-grade serous ovarian carcinoma...

A novel agent for recurrent low-grade serous ovarian carcinoma

Gershenson DM, Miller A, Brady WE, et al. Trametinib versus standard of care in patients with recurrent low-grade serous ovarian cancer (GOG 281/LOGS): an international, randomised, open-label, multicentre, phase 2/3 trial. Lancet. 2022;399:541-553. doi:10.1016/S0140-6736(21)02175-9.

Low-grade serous carcinoma is a histologic subtype that makes up approximately 5% of all epithelial ovarian cancers.³ Patients with low-grade serous carcinoma are often younger and, because of the indolent nature of the histology, generally have a longer overall survival compared with patients with high-grade serous carcinoma. Unlike high-grade disease, however, low-grade serous carcinoma usually is resistant to chemotherapy, making treatment options limited for patients with advanced and recurrent disease.

Trametinib: A potential option

In an international, randomized, open-label trial (GOG 281/LOGS), Gershenson and colleagues investigated the efficacy of trametinib compared with standard-of-care chemotherapy in patients with recurrent low-grade serous ovarian cancer.⁴ Trametinib, a mitogen-activated protein kinase MEK inhibitor, is a targeted agent that is FDA approved for treatment in BRAF-mutated melanoma, lung, and thyroid cancers.

Patients with recurrent low-grade serous ovarian cancer were randomly assigned to trametinib (n = 130) or 1 of 5 standard-of-care treatment options (n = 130), including both chemotherapy and hormonal treatments. Those assigned to trametinib were significantly less likely to have disease progression (78% vs 89%), with a median progression-free survival of 13 months, compared with7.2 months in controls (hazard ratio [HR], 0.48; 95% confidence interval [CI], 0.36–0.64). Additionally, patients who had a radiographic response to trametinib experienced a longer duration of response compared with those who responded to standard-of-care treatment (13.6 months vs 5.9 months).

While there was no statistically significant difference in overall survival (HR, 0.76; 95% CI, 0.51–1.12), crossover to trametinib from the standard-of-care group was allowed and occurred among 68% of patients, which limits the study’s ability to measure differences in overall survival.

Trametinib was well tolerated by patients, but skin rash and anemia followed by hypertension were the most common adverse effects. In the standard-of-care group, the most common toxicities were abdominal pain, nausea, and anemia. A slightly higher proportion of patients in the trametinib group discontinued the drug due to toxicity compared with the standard-of-care group (36% vs 30%), but the there was no difference between the 2 groups in scores on quality-of-life assessments.

Continue to: PARP inhibitors benefit many women with ovarian cancer, but they may hurt others...

PARP inhibitors benefit many women with ovarian cancer, but they may hurt others

Monk BJ, Parkinson C, Lim MC, et al. A randomized, phase III trial to evaluate rucaparib monotherapy as maintenance treatment in patients with newly diagnosed ovarian cancer (ATHENA-MONO/GOG-3020/ENGOT-ov45). J Clin Oncol. 2022;40:3952-3964. doi:10.1200/JCO.22.01003.

Poly(ADP-ribose) polymerase (PARP) inhibitors are a class of oral anticancer agents that target DNA repair. Since the initial FDA approval in 2014 of olaparib for the treatment of patients with recurrent BRCA-mutated ovarian cancer, PARP inhibitors have been approved for maintenance in both the frontline setting and after platinum-sensitive recurrence, and as single-agenttreatment for ovarian cancer with BRCA mutations or evidence of homologous repair deficiency (HRD), a BRCA-like molecular phenotype.⁵ The expanding role for PARP inhibitors in ovarian cancer seemed inexorable.

Restricted prescribing advised

In 2022, we learned that in certain settings, PARP inhibitors may be the wrong choice. Several “Dear Health Care Provider” letters were issued by AstraZeneca, Clovis, and GSK to advise physicians to restrict the prescribing of olaparib, rucaparib, and niraparib.^6,7

AstraZeneca and Clovis issued letters spurred by the final analysis of ARIEL4 and SOLO3 studies, 2 randomized trials that investigated, respectively, rucaparib and olaparib monotherapy compared with chemotherapy in recurrent ovarian cancer.^8,9 In both cases patients randomized to PARP inhibitors may have experienced an overall survival decrement compared with those who received chemotherapy.

At the FDA’s request, Clovis has withdrawn rucaparib as a treatment for patients with recurrent BRCA-mutant ovarian cancer who had received 2 or more lines of chemotherapy, and AstraZeneca withdrew olaparib monotherapy in germline BRCA-mutant patients with recurrent ovarian cancer. Shortly after these withdrawals, GSK also withdrew its indication for niraparib as a treatment for women with HRD, platinum-sensitive ovarian cancer who have received 3 or more prior chemotherapies. Furthermore, based on the final overall survival analysis of the NOVA study, GSK also restricted its indication for niraparib maintenance for recurrent ovarian cancer to patients with germline BRCA mutations, due to evidence of an overall survival detriment in this setting.¹⁰

Positive study results

Fortunately, 2022 was not all bad news for PARP inhibitors in ovarian cancer. In June 2022, the ATHENA-MONO trial, a phase 3 double-blind randomized controlled trial, demonstrated that rucaparib maintenance in patients with newly diagnosed epithelial ovarian cancer was associated with a significantly longer progression-free survival compared with placebo.¹¹ The effect was most pronounced in the BRCA-mutant/HRD population, with a median progression-free survival of 28.7 months in the rucaparib group compared with 11.3 months in the placebo group (HR, 0.47; 95% CI, 0.31–0.72). Thus, rucaparib was added to the list of PARP inhibitors approved for upfront maintenance therapy in epithelial ovarian cancer.

Similarly, the long-term overall survival analysis from the upfront trials SOLO-1 and PAOLA-1 showed an overall survival advantage of PARP inhibitor, compared with placebo, maintenance in patients with BRCA mutations or HRD tumors.^12,13 ●

In 2022, the most significant advances in the treatment of gynecologic cancers were achieved for patients with ovarian cancer. While ovarian cancer continues to carry the worst prognosis of all gynecologic cancers, 5-year relative survival has gradually increased, from 34.4% in 1975 to 52.4% in 2014.¹

In this Update, we highlight the recent advances in our understanding of targeted therapy in ovarian cancer. We review SORAYA, a trial that demonstrated that mirvetuximab soravtansine, an antibody-drug conjugate, has promising efficacy in platinum-resistant ovarian cancers that overexpress folate receptor α. We also spotlight progress in the treatment of low-grade serous ovarian cancer, another notoriously chemotherapy-resistant disease, in GOG 281/LOGS, a phase 2 study of the MEK inhibitor trametinib. Finally, we discuss emerging long-term follow-up data on poly(ADP-ribose) polymerase (PARP) inhibitors, which are helping to refine the role of these groundbreaking drugs.

New drug approved for platinum-resistant epithelial ovarian cancer—the first since 2014

Matulonis UA, Lorusso D, Oaknin A, et al. Efficacy and safety of mirvetuximab soravtansine in patients with platinum-resistant ovarian cancer with high folate receptor alpha expression: results from the SORAYA study. J Clin Oncol. 2023;41:2436-2445. doi:10.1200/JCO.22.01900.

While most patients diagnosed with advanced ovarian cancer will respond to platinum-based chemotherapy, those whose disease recurs eventually develop resistance to platinum agents. Treatment options for platinum-resistant ovarian cancer are limited and prognosis is poor. Most regimens have a response rate of only 10%. Since the approval of bevacizumab combined with chemotherapy in 2014, no new agents have been approved by the US Food and Drug Administration (FDA) for use in platinum-resistant ovarian cancer.

Efficacy shown with mirvetuximab

Recently, Matulonis and colleagues published results of the SORAYA study, a single-arm,phase 2 trial, that examined the efficacy and safety of mirvetuximab soravtansine-gynx among women with platinum-resistant ovarian cancer.² Mirvetuximab is an antibody-drug conjugate composed of an antibody directed at the folate receptor α attached to a cytotoxic microtubule inhibitor.

The study included 106 patients with platinum-resistant ovarian cancer whose tumors expressed folate receptor α at a high level—a feature of approximately 50% of patients screened for the study. Twenty-nine patients experienced a partial response and 5 had a complete response, corresponding to a remarkable objective response rate of 32.4%. The median progression-free survival was 4.3 months.

Like other antibody-drug conjugates, ocular toxicities, including blurred vision (41%) and keratopathy (29%), were common. However, toxicity was manageable and rarely led to drug discontinuation.

Continue to: A novel agent for recurrent low-grade serous ovarian carcinoma...

A novel agent for recurrent low-grade serous ovarian carcinoma

Gershenson DM, Miller A, Brady WE, et al. Trametinib versus standard of care in patients with recurrent low-grade serous ovarian cancer (GOG 281/LOGS): an international, randomised, open-label, multicentre, phase 2/3 trial. Lancet. 2022;399:541-553. doi:10.1016/S0140-6736(21)02175-9.

Low-grade serous carcinoma is a histologic subtype that makes up approximately 5% of all epithelial ovarian cancers.³ Patients with low-grade serous carcinoma are often younger and, because of the indolent nature of the histology, generally have a longer overall survival compared with patients with high-grade serous carcinoma. Unlike high-grade disease, however, low-grade serous carcinoma usually is resistant to chemotherapy, making treatment options limited for patients with advanced and recurrent disease.

Trametinib: A potential option

In an international, randomized, open-label trial (GOG 281/LOGS), Gershenson and colleagues investigated the efficacy of trametinib compared with standard-of-care chemotherapy in patients with recurrent low-grade serous ovarian cancer.⁴ Trametinib, a mitogen-activated protein kinase MEK inhibitor, is a targeted agent that is FDA approved for treatment in BRAF-mutated melanoma, lung, and thyroid cancers.

Patients with recurrent low-grade serous ovarian cancer were randomly assigned to trametinib (n = 130) or 1 of 5 standard-of-care treatment options (n = 130), including both chemotherapy and hormonal treatments. Those assigned to trametinib were significantly less likely to have disease progression (78% vs 89%), with a median progression-free survival of 13 months, compared with7.2 months in controls (hazard ratio [HR], 0.48; 95% confidence interval [CI], 0.36–0.64). Additionally, patients who had a radiographic response to trametinib experienced a longer duration of response compared with those who responded to standard-of-care treatment (13.6 months vs 5.9 months).

While there was no statistically significant difference in overall survival (HR, 0.76; 95% CI, 0.51–1.12), crossover to trametinib from the standard-of-care group was allowed and occurred among 68% of patients, which limits the study’s ability to measure differences in overall survival.

Trametinib was well tolerated by patients, but skin rash and anemia followed by hypertension were the most common adverse effects. In the standard-of-care group, the most common toxicities were abdominal pain, nausea, and anemia. A slightly higher proportion of patients in the trametinib group discontinued the drug due to toxicity compared with the standard-of-care group (36% vs 30%), but the there was no difference between the 2 groups in scores on quality-of-life assessments.

Continue to: PARP inhibitors benefit many women with ovarian cancer, but they may hurt others...

PARP inhibitors benefit many women with ovarian cancer, but they may hurt others

Monk BJ, Parkinson C, Lim MC, et al. A randomized, phase III trial to evaluate rucaparib monotherapy as maintenance treatment in patients with newly diagnosed ovarian cancer (ATHENA-MONO/GOG-3020/ENGOT-ov45). J Clin Oncol. 2022;40:3952-3964. doi:10.1200/JCO.22.01003.

Poly(ADP-ribose) polymerase (PARP) inhibitors are a class of oral anticancer agents that target DNA repair. Since the initial FDA approval in 2014 of olaparib for the treatment of patients with recurrent BRCA-mutated ovarian cancer, PARP inhibitors have been approved for maintenance in both the frontline setting and after platinum-sensitive recurrence, and as single-agenttreatment for ovarian cancer with BRCA mutations or evidence of homologous repair deficiency (HRD), a BRCA-like molecular phenotype.⁵ The expanding role for PARP inhibitors in ovarian cancer seemed inexorable.

Restricted prescribing advised

In 2022, we learned that in certain settings, PARP inhibitors may be the wrong choice. Several “Dear Health Care Provider” letters were issued by AstraZeneca, Clovis, and GSK to advise physicians to restrict the prescribing of olaparib, rucaparib, and niraparib.^6,7

AstraZeneca and Clovis issued letters spurred by the final analysis of ARIEL4 and SOLO3 studies, 2 randomized trials that investigated, respectively, rucaparib and olaparib monotherapy compared with chemotherapy in recurrent ovarian cancer.^8,9 In both cases patients randomized to PARP inhibitors may have experienced an overall survival decrement compared with those who received chemotherapy.

At the FDA’s request, Clovis has withdrawn rucaparib as a treatment for patients with recurrent BRCA-mutant ovarian cancer who had received 2 or more lines of chemotherapy, and AstraZeneca withdrew olaparib monotherapy in germline BRCA-mutant patients with recurrent ovarian cancer. Shortly after these withdrawals, GSK also withdrew its indication for niraparib as a treatment for women with HRD, platinum-sensitive ovarian cancer who have received 3 or more prior chemotherapies. Furthermore, based on the final overall survival analysis of the NOVA study, GSK also restricted its indication for niraparib maintenance for recurrent ovarian cancer to patients with germline BRCA mutations, due to evidence of an overall survival detriment in this setting.¹⁰

Positive study results

Fortunately, 2022 was not all bad news for PARP inhibitors in ovarian cancer. In June 2022, the ATHENA-MONO trial, a phase 3 double-blind randomized controlled trial, demonstrated that rucaparib maintenance in patients with newly diagnosed epithelial ovarian cancer was associated with a significantly longer progression-free survival compared with placebo.¹¹ The effect was most pronounced in the BRCA-mutant/HRD population, with a median progression-free survival of 28.7 months in the rucaparib group compared with 11.3 months in the placebo group (HR, 0.47; 95% CI, 0.31–0.72). Thus, rucaparib was added to the list of PARP inhibitors approved for upfront maintenance therapy in epithelial ovarian cancer.

Similarly, the long-term overall survival analysis from the upfront trials SOLO-1 and PAOLA-1 showed an overall survival advantage of PARP inhibitor, compared with placebo, maintenance in patients with BRCA mutations or HRD tumors.^12,13 ●

In 2022, the most significant advances in the treatment of gynecologic cancers were achieved for patients with ovarian cancer. While ovarian cancer continues to carry the worst prognosis of all gynecologic cancers, 5-year relative survival has gradually increased, from 34.4% in 1975 to 52.4% in 2014.¹

In this Update, we highlight the recent advances in our understanding of targeted therapy in ovarian cancer. We review SORAYA, a trial that demonstrated that mirvetuximab soravtansine, an antibody-drug conjugate, has promising efficacy in platinum-resistant ovarian cancers that overexpress folate receptor α. We also spotlight progress in the treatment of low-grade serous ovarian cancer, another notoriously chemotherapy-resistant disease, in GOG 281/LOGS, a phase 2 study of the MEK inhibitor trametinib. Finally, we discuss emerging long-term follow-up data on poly(ADP-ribose) polymerase (PARP) inhibitors, which are helping to refine the role of these groundbreaking drugs.

New drug approved for platinum-resistant epithelial ovarian cancer—the first since 2014

Matulonis UA, Lorusso D, Oaknin A, et al. Efficacy and safety of mirvetuximab soravtansine in patients with platinum-resistant ovarian cancer with high folate receptor alpha expression: results from the SORAYA study. J Clin Oncol. 2023;41:2436-2445. doi:10.1200/JCO.22.01900.

While most patients diagnosed with advanced ovarian cancer will respond to platinum-based chemotherapy, those whose disease recurs eventually develop resistance to platinum agents. Treatment options for platinum-resistant ovarian cancer are limited and prognosis is poor. Most regimens have a response rate of only 10%. Since the approval of bevacizumab combined with chemotherapy in 2014, no new agents have been approved by the US Food and Drug Administration (FDA) for use in platinum-resistant ovarian cancer.

Efficacy shown with mirvetuximab

Recently, Matulonis and colleagues published results of the SORAYA study, a single-arm,phase 2 trial, that examined the efficacy and safety of mirvetuximab soravtansine-gynx among women with platinum-resistant ovarian cancer.² Mirvetuximab is an antibody-drug conjugate composed of an antibody directed at the folate receptor α attached to a cytotoxic microtubule inhibitor.

The study included 106 patients with platinum-resistant ovarian cancer whose tumors expressed folate receptor α at a high level—a feature of approximately 50% of patients screened for the study. Twenty-nine patients experienced a partial response and 5 had a complete response, corresponding to a remarkable objective response rate of 32.4%. The median progression-free survival was 4.3 months.

Like other antibody-drug conjugates, ocular toxicities, including blurred vision (41%) and keratopathy (29%), were common. However, toxicity was manageable and rarely led to drug discontinuation.

Continue to: A novel agent for recurrent low-grade serous ovarian carcinoma...

A novel agent for recurrent low-grade serous ovarian carcinoma

Gershenson DM, Miller A, Brady WE, et al. Trametinib versus standard of care in patients with recurrent low-grade serous ovarian cancer (GOG 281/LOGS): an international, randomised, open-label, multicentre, phase 2/3 trial. Lancet. 2022;399:541-553. doi:10.1016/S0140-6736(21)02175-9.

Low-grade serous carcinoma is a histologic subtype that makes up approximately 5% of all epithelial ovarian cancers.³ Patients with low-grade serous carcinoma are often younger and, because of the indolent nature of the histology, generally have a longer overall survival compared with patients with high-grade serous carcinoma. Unlike high-grade disease, however, low-grade serous carcinoma usually is resistant to chemotherapy, making treatment options limited for patients with advanced and recurrent disease.

Trametinib: A potential option

In an international, randomized, open-label trial (GOG 281/LOGS), Gershenson and colleagues investigated the efficacy of trametinib compared with standard-of-care chemotherapy in patients with recurrent low-grade serous ovarian cancer.⁴ Trametinib, a mitogen-activated protein kinase MEK inhibitor, is a targeted agent that is FDA approved for treatment in BRAF-mutated melanoma, lung, and thyroid cancers.

Patients with recurrent low-grade serous ovarian cancer were randomly assigned to trametinib (n = 130) or 1 of 5 standard-of-care treatment options (n = 130), including both chemotherapy and hormonal treatments. Those assigned to trametinib were significantly less likely to have disease progression (78% vs 89%), with a median progression-free survival of 13 months, compared with7.2 months in controls (hazard ratio [HR], 0.48; 95% confidence interval [CI], 0.36–0.64). Additionally, patients who had a radiographic response to trametinib experienced a longer duration of response compared with those who responded to standard-of-care treatment (13.6 months vs 5.9 months).

While there was no statistically significant difference in overall survival (HR, 0.76; 95% CI, 0.51–1.12), crossover to trametinib from the standard-of-care group was allowed and occurred among 68% of patients, which limits the study’s ability to measure differences in overall survival.

Trametinib was well tolerated by patients, but skin rash and anemia followed by hypertension were the most common adverse effects. In the standard-of-care group, the most common toxicities were abdominal pain, nausea, and anemia. A slightly higher proportion of patients in the trametinib group discontinued the drug due to toxicity compared with the standard-of-care group (36% vs 30%), but the there was no difference between the 2 groups in scores on quality-of-life assessments.

Continue to: PARP inhibitors benefit many women with ovarian cancer, but they may hurt others...

PARP inhibitors benefit many women with ovarian cancer, but they may hurt others

Monk BJ, Parkinson C, Lim MC, et al. A randomized, phase III trial to evaluate rucaparib monotherapy as maintenance treatment in patients with newly diagnosed ovarian cancer (ATHENA-MONO/GOG-3020/ENGOT-ov45). J Clin Oncol. 2022;40:3952-3964. doi:10.1200/JCO.22.01003.

Poly(ADP-ribose) polymerase (PARP) inhibitors are a class of oral anticancer agents that target DNA repair. Since the initial FDA approval in 2014 of olaparib for the treatment of patients with recurrent BRCA-mutated ovarian cancer, PARP inhibitors have been approved for maintenance in both the frontline setting and after platinum-sensitive recurrence, and as single-agenttreatment for ovarian cancer with BRCA mutations or evidence of homologous repair deficiency (HRD), a BRCA-like molecular phenotype.⁵ The expanding role for PARP inhibitors in ovarian cancer seemed inexorable.

Restricted prescribing advised

In 2022, we learned that in certain settings, PARP inhibitors may be the wrong choice. Several “Dear Health Care Provider” letters were issued by AstraZeneca, Clovis, and GSK to advise physicians to restrict the prescribing of olaparib, rucaparib, and niraparib.^6,7

AstraZeneca and Clovis issued letters spurred by the final analysis of ARIEL4 and SOLO3 studies, 2 randomized trials that investigated, respectively, rucaparib and olaparib monotherapy compared with chemotherapy in recurrent ovarian cancer.^8,9 In both cases patients randomized to PARP inhibitors may have experienced an overall survival decrement compared with those who received chemotherapy.

At the FDA’s request, Clovis has withdrawn rucaparib as a treatment for patients with recurrent BRCA-mutant ovarian cancer who had received 2 or more lines of chemotherapy, and AstraZeneca withdrew olaparib monotherapy in germline BRCA-mutant patients with recurrent ovarian cancer. Shortly after these withdrawals, GSK also withdrew its indication for niraparib as a treatment for women with HRD, platinum-sensitive ovarian cancer who have received 3 or more prior chemotherapies. Furthermore, based on the final overall survival analysis of the NOVA study, GSK also restricted its indication for niraparib maintenance for recurrent ovarian cancer to patients with germline BRCA mutations, due to evidence of an overall survival detriment in this setting.¹⁰

Positive study results

Fortunately, 2022 was not all bad news for PARP inhibitors in ovarian cancer. In June 2022, the ATHENA-MONO trial, a phase 3 double-blind randomized controlled trial, demonstrated that rucaparib maintenance in patients with newly diagnosed epithelial ovarian cancer was associated with a significantly longer progression-free survival compared with placebo.¹¹ The effect was most pronounced in the BRCA-mutant/HRD population, with a median progression-free survival of 28.7 months in the rucaparib group compared with 11.3 months in the placebo group (HR, 0.47; 95% CI, 0.31–0.72). Thus, rucaparib was added to the list of PARP inhibitors approved for upfront maintenance therapy in epithelial ovarian cancer.

Similarly, the long-term overall survival analysis from the upfront trials SOLO-1 and PAOLA-1 showed an overall survival advantage of PARP inhibitor, compared with placebo, maintenance in patients with BRCA mutations or HRD tumors.^12,13 ●

CASE 1 Multiparous female with short-interval pregnancies desires contraception

A 24-year-old woman (G4P3) presents for a routine prenatal visit in the third trimester. Her last 2 pregnancies have occurred within 3 months of her prior birth. She endorses feeling overwhelmed with having 4 children under the age of 5 years, and she specifies that she would like to avoid another pregnancy for several years. She plans to breast and bottle feed, and she notes that she tends to forget to take pills. When you look back at her prior charts, you note that she did not return for her last 2 postpartum visits. What can you offer her? What would be a safe contraceptive option for her?
 

Intrauterine devices (IUDs) are safe, effective, and reported by patients to be satisfactory methods of contraception precisely because they are prone to less user error. The Contraceptive Choice Project demonstrated that patients are more apt to choose them when barriers such as cost and access are removed and nondirective counseling is provided.¹ Given that unintended pregnancy rates hover around 48%, the American College of Obstetricians and Gynecologists (ACOG) recommends them as first-line methods for pregnancy prevention.^2,3

For repeat pregnancies, the postpartum period is an especially vulnerable time—non-breastfeeding women will ovulate as soon as 25 days after birth, and by 8 weeks 30% will have ovulated.⁴ Approximately 40% to 57% of women report having unprotected intercourse before 6 weeks postpartum, and nearly 70% of all pregnancies in the first year postpartum are unintended.^3,5 Furthermore, patients at highest risk for short-interval pregnancy, such as adolescents, are less likely to return for a postpartum visit.³

Short-interval pregnancies confer greater fetal risk, including risks of low-birth weight, preterm birth, small for gestational age and increased risk of neonatal intensive care unit admission.⁶ Additionally, maternal health may be compromised during a short-interval pregnancy, particularly in medically complex patients due to increased risks of adverse pregnancy outcomes, such as postpartum bleeding or uterine rupture and disease progression.⁷ A 2006 meta-analysis by Conde-Agudelo and colleagues found that waiting at least 18 months between pregnancies was optimal for reducing these risks.⁶

Thus, the immediate postpartum period is an optimal time for addressing contraceptive needs and for preventing short-interval and unintended pregnancy. This article aims to provide evidence supporting the use of immediate postpartum IUDs, as well as their associated risks and barriers to use.

IUD types and routes for immediate postpartum insertion

There are several randomized controlled trials (RCTs) that examine the immediate postpartum use of copper IUDs and levonorgestrel-releasing (LNG) IUDs.^8-11 In 2010, Chen and colleagues compared placement of the immediate postpartum IUD following vaginal delivery with interval placement at 6–8 weeks postpartum. Of 51 patients enrolled in each arm, 98% received an IUD immediately postpartum, and 90% received one during their postpartum visit. There were 12 expulsions (24%) in the immediate postpartum IUD group, compared with 2 (4.4%) in the interval group. Expelled IUDs were replaced, and at 6 months both groups had similar rates of IUD use.⁸

Whitaker and colleagues demonstrated similar findings after randomizing a small group of women who had a cesarean delivery (CD) to interval or immediate placement. There were significantly more expulsions in the post-placental group (20%) than the interval group (0%), but there were more users of the IUD in the post-placental group than in the interval group at 12 months.⁹

Two RCTs, by Lester and colleagues and Levi et al, demonstrated successful placement of the copper IUD or LNG-IUD following CD, with few expulsions (0% and 8%, respectively). Patients who were randomized to immediate postpartum IUD placement were more likely to receive an IUD than those who were randomized to interval insertion, mostly due to lack of postpartum follow up. Both studies followed patients out to 6 months, and rates of IUD continuation and satisfaction were higher at this time in the immediate postpartum IUD groups.^10,11

Continue to: Risks, contraindications, and breastfeeding impact...

 

 

Risks, contraindications, and breastfeeding impact

What are the risks of immediate postpartum IUD placement? The highest risk of IUD placement in the immediate postpartum period appears to be expulsion (TABLE 1). In a meta-analysis conducted in 2022, which looked at 11 studies of immediate IUD insertion, the rates of expulsion were between 5% and 27%.^3,8,12,13 Results of a study by Cohen and colleagues demonstrated that most expulsions occurred within the first 12 weeks following delivery; of those expulsions that occurred, only 11% went unrecognized.¹³ Immediate postpartum IUD insertion does not increase the IUD-associated risks of perforation, infection, or immediate postpartum bleeding (although prolonged bleeding may be more common).¹²

Are there contraindications to placing an IUD immediately postpartum? The main contraindication to immediate postpartum IUD use is peripartum infection, including Triple I, endomyometritis, and puerperal sepsis. Other contraindications include retained placenta requiring manual or surgical removal, uterine anomalies, and other medical contraindications to IUD use as recommended by the US Medical Eligibility Criteria.¹⁴

Does immediate IUD placement affect breastfeeding? There is theoretical risk of decreased milk supply or difficulty breastfeeding with initiation of progestin-only methods of contraception in the immediate postpartum period, as the rapid fall in progesterone levels initiates lactogenesis. However, progestin-only methods appear to have limited effect on initiation and continuation of breastfeeding in the immediate postpartum period.¹⁵

There were 2 secondary analyses of a pair of RCTs comparing immediate and delayed postpartum IUD use. Results from Levi and colleagues demonstrated no difference between immediate and interval IUD placement groups in the proportion of women who were breastfeeding at 6, 12, and 24 weeks.¹⁶ Chen and colleagues’ study was smaller; researchers found that women with interval IUD placement were more likely to be exclusively breastfeeding and continuing to breastfeed at 6 months compared with the immediate postpartum group.¹⁷

To better characterize the impact of progestin implants, in a recent meta-analysis, authors examined the use of subcutaneous levonorgestrel rods and found no difference in breastfeeding initiation and continuation rates between women who had them placed immediately versus 6 ̶ 8 weeks postpartum.¹²

Benefits of immediate postpartum IUD placement

One benefit of immediate postpartum IUD insertion is a reduction in short-interval pregnancies. In a study by Cohen and colleagues¹³ of young women aged 13 to 22 years choosing immediate postpartum IUDs (82) or implants (162), the authors found that 61% of women retained their IUDs at 12 months postpartum. Because few requested IUD removal over that time frame, the discontinuation rate at 1 year was primarily due to expulsions. Pregnancy rates at 1 year were 7.6% in the IUD group and 1.5% in the implant group. However, the 7.6% rate in the IUD group was lower than in previously studied adolescent control groups: 18.6% of control adolescents (38 of 204) using a contraceptive form other than a postpartum etonogestrel implant had repeat pregnancy at 1 year.^13,18

Not only are patients who receive immediate postpartum IUDs more likely to receive them and continue their use, but they are also satisfied with the experience of receiving the IUD and with the method of contraception. A small mixed methods study of 66 patients demonstrated that women were interested in obtaining immediate postpartum contraception to avoid some of the logistical and financial challenges of returning for a postpartum visit. They also felt that the IUD placement was less painful than expected, and they didn’t feel that the insertion process imposed on their birth experience. Many described relief to know that they had a safe and effective contraceptive method upon leaving the hospital.¹⁹ Other studies have shown that even among women who expel an IUD following immediate postpartum placement, many choose to replace it in order to continue it as a contraceptive method.^8,9,13

Continue to: Instructions for placement...

 

 

Instructions for placement

1. Counsel appropriately. Thoroughly counsel patients regarding their options for postpartum contraception, with emphasis on the benefits, risks, and contraindications. Current recommendations to reduce the risk of expulsion are to place the IUD in the delivery room or operating room within 10 minutes of placental delivery.

2. Post ̶ vaginal delivery. Following vaginal delivery, remove the IUD from the inserter, cut the strings to 10 cm and, using either fingers to grasp the wings of the IUD or ring forceps, advance the IUD to the fundus. Ultrasound guidance may be used, but it does not appear to be helpful in preventing expulsion.²⁰

3. Post ̶ cesarean delivery. Once the placenta is delivered, place the IUD using the inserter or a ring forceps at the fundus and guide the strings into the cervix, then close the hysterotomy.

ACOG does recommend formal trainingbefore placing postpartum IUDs. One resource they provide is a free online webinar (https://www.acog.org/education-and-events/webinars/long-acting-reversible-contra ception-overview-and-hands-on-practice-for-residents).³

CASE 1 Resolved

The patient was counseled in the office about her options, and she was most interested in immediate postpartum LNG-IUD placement. She went on to deliver a healthy baby vaginally at 39 weeks. Within 10 minutes of placental delivery, she received an LNG-IUD. She returned to the office 3 months later for STI screening; her examination revealed correct placement and no evidence of expulsion. She expressed that she was happy with her IUD and thankful that she was able to receive it immediately after the birth of her baby.

CASE 2 Nulliparous woman desires IUD for postpartum contraception

A 33-year-old nulliparous woman presents in the third trimester for a routine prenatal visit. She had used the LNG-IUD prior to getting pregnant and reports that she was very happy with it. She knows she wants to wait at least 2 years before trying to get pregnant again, and she would like to resume contraception as soon as it is reasonably safe to do so. She has read that it is possible to get an IUD immediately postpartum and asks about it as a possible option.

What barriers will she face in obtaining an immediate postpartum IUD?

There are many barriers for patients who may be good candidates for immediate postpartum contraception (TABLE 2). Many patients are unaware that it is a safe option, and they often have concerns about such risks as infection, perforation, and effects on breastfeeding. Additionally, providers may not prioritize adequate counseling about postpartum contraception when they face time constraints and a need to counsel about other pregnancy-related topics during the prenatal visit schedule.^7,21

System, hospital, and clinician barriers to immediate postpartum IUD use

Hospital implementation of a successful postpartum IUD program requires pharmacy, intrapartum and postpartum nursing staff, physicians, administration, and billing to be aligned. Hospital administration and pharmacists must stock IUDs in the pharmacy. Hospital nursing staff attitudes toward and knowledge of postpartum contraception can have profound influence on how they discuss safe and effective methods of postpartum contraception with patients who may not have received counseling during prenatal care.²² In a survey of 108 ACOG fellows, nearly 75% of ObGyn physicians did not offer immediate postpartum IUDs; lack of provider training, lack of IUD availability, and concern about cost and payment were found to be common reasons why.²¹ Additionally, Catholic-affiliated and rural institutions are less likely to offer it, whereas more urban, teaching hospitals are more likely to have programs in place.²³ Prior to 2012, immediate postpartum IUD insertions and device costs were part of the global Medicaid obstetric fee in most states, and both hospital systems and individual providers were concerned about loss of revenue.²³

In 2015, Washington and colleagues published a decision analysis that examined the cost-effectiveness and cost savings associated with immediate postpartum IUD use. Accounting for expulsion rates, they found that immediate postpartum IUD placement can save $282,540 per 1,000 women over 2 years; additionally, immediate postpartum IUD use can prevent 88 unintended pregnancies per 1,000 women over 2 years.²⁴ Not only do immediate postpartum IUDs have great potential to prevent individual patients from undesired short-interval pregnancies (FIGURE 1), but they can also save the system substantial health care dollars (FIGURE 2).

Overcoming barriers

Immediate postpartum IUD implementation is attainable with practice, policy, and institutional changes. Education and training programs geared toward providers and nursing staff can improve understanding of the benefits and risks of immediate postpartum IUD placement. Additionally, clinicians must provide comprehensive, nondirective counseling during the antepartum period, informing patients of all safe and effective options. Expulsion risks should be disclosed, as well as the benefit of not needing to return for a separate postpartum contraception appointment.

Since 2012, many state Medicaid agencies have decoupled reimbursement for inpatient postpartum IUD insertion from the delivery fee. By 2018, more than half of states adopted this practice. Commercial insurers have followed suit in some cases, and as such, both Medicaid and commercially insured patients have had increased access to immediate postpartum IUDs.²³ This has translated into increased uptake of immediate postpartum IUDs among both Medicaid and commercially insured patients. Koch et al conducted a retrospective cohort study comparing IUD use in patients 1 year before and 1 year after the policy changes, and they found a 10-fold increase in use of immediate postpartum IUDs.²⁵

While education, counseling, access, and changes in reimbursement may increase access in many hospital systems, some barriers, such as religious affiliation of the hospital system, may be impossible to overcome. A viable alternative to immediate postpartum IUD placement may be early postpartum IUD placement, which could allow patients to coordinate this procedure with 1- or 2-week return routine postpartum visits for CD recovery, mental health screenings, and/or well-baby visits. More data are necessary before recommending this universally, but Averbach and colleagues published a promising meta-analysis that demonstrated no complete expulsions in studies in which IUDs were placed between 2 and 4 weeks postpartum, and only a pooled partial expulsion rate (of immediate postpartum, early inpatient, early outpatient, and interval placement) of 3.7%.⁴

CASE 2 Resolved

Although the patient was interested in receiving a postpartum LNG-IUD immediately after her vaginal birth, she had to wait until her 6-week postpartum visit. The hospital did not stock IUDs for immediate postpartum IUD use, and her provider, having not been trained on immediate postpartum insertion, did not feel comfortable trying to place it in the immediate postpartum time frame. ●

CASE 1 Multiparous female with short-interval pregnancies desires contraception

A 24-year-old woman (G4P3) presents for a routine prenatal visit in the third trimester. Her last 2 pregnancies have occurred within 3 months of her prior birth. She endorses feeling overwhelmed with having 4 children under the age of 5 years, and she specifies that she would like to avoid another pregnancy for several years. She plans to breast and bottle feed, and she notes that she tends to forget to take pills. When you look back at her prior charts, you note that she did not return for her last 2 postpartum visits. What can you offer her? What would be a safe contraceptive option for her?
 

Intrauterine devices (IUDs) are safe, effective, and reported by patients to be satisfactory methods of contraception precisely because they are prone to less user error. The Contraceptive Choice Project demonstrated that patients are more apt to choose them when barriers such as cost and access are removed and nondirective counseling is provided.¹ Given that unintended pregnancy rates hover around 48%, the American College of Obstetricians and Gynecologists (ACOG) recommends them as first-line methods for pregnancy prevention.^2,3

For repeat pregnancies, the postpartum period is an especially vulnerable time—non-breastfeeding women will ovulate as soon as 25 days after birth, and by 8 weeks 30% will have ovulated.⁴ Approximately 40% to 57% of women report having unprotected intercourse before 6 weeks postpartum, and nearly 70% of all pregnancies in the first year postpartum are unintended.^3,5 Furthermore, patients at highest risk for short-interval pregnancy, such as adolescents, are less likely to return for a postpartum visit.³

Short-interval pregnancies confer greater fetal risk, including risks of low-birth weight, preterm birth, small for gestational age and increased risk of neonatal intensive care unit admission.⁶ Additionally, maternal health may be compromised during a short-interval pregnancy, particularly in medically complex patients due to increased risks of adverse pregnancy outcomes, such as postpartum bleeding or uterine rupture and disease progression.⁷ A 2006 meta-analysis by Conde-Agudelo and colleagues found that waiting at least 18 months between pregnancies was optimal for reducing these risks.⁶

Thus, the immediate postpartum period is an optimal time for addressing contraceptive needs and for preventing short-interval and unintended pregnancy. This article aims to provide evidence supporting the use of immediate postpartum IUDs, as well as their associated risks and barriers to use.

IUD types and routes for immediate postpartum insertion

There are several randomized controlled trials (RCTs) that examine the immediate postpartum use of copper IUDs and levonorgestrel-releasing (LNG) IUDs.^8-11 In 2010, Chen and colleagues compared placement of the immediate postpartum IUD following vaginal delivery with interval placement at 6–8 weeks postpartum. Of 51 patients enrolled in each arm, 98% received an IUD immediately postpartum, and 90% received one during their postpartum visit. There were 12 expulsions (24%) in the immediate postpartum IUD group, compared with 2 (4.4%) in the interval group. Expelled IUDs were replaced, and at 6 months both groups had similar rates of IUD use.⁸

Whitaker and colleagues demonstrated similar findings after randomizing a small group of women who had a cesarean delivery (CD) to interval or immediate placement. There were significantly more expulsions in the post-placental group (20%) than the interval group (0%), but there were more users of the IUD in the post-placental group than in the interval group at 12 months.⁹

Two RCTs, by Lester and colleagues and Levi et al, demonstrated successful placement of the copper IUD or LNG-IUD following CD, with few expulsions (0% and 8%, respectively). Patients who were randomized to immediate postpartum IUD placement were more likely to receive an IUD than those who were randomized to interval insertion, mostly due to lack of postpartum follow up. Both studies followed patients out to 6 months, and rates of IUD continuation and satisfaction were higher at this time in the immediate postpartum IUD groups.^10,11

Continue to: Risks, contraindications, and breastfeeding impact...

 

 

Risks, contraindications, and breastfeeding impact

What are the risks of immediate postpartum IUD placement? The highest risk of IUD placement in the immediate postpartum period appears to be expulsion (TABLE 1). In a meta-analysis conducted in 2022, which looked at 11 studies of immediate IUD insertion, the rates of expulsion were between 5% and 27%.^3,8,12,13 Results of a study by Cohen and colleagues demonstrated that most expulsions occurred within the first 12 weeks following delivery; of those expulsions that occurred, only 11% went unrecognized.¹³ Immediate postpartum IUD insertion does not increase the IUD-associated risks of perforation, infection, or immediate postpartum bleeding (although prolonged bleeding may be more common).¹²

Are there contraindications to placing an IUD immediately postpartum? The main contraindication to immediate postpartum IUD use is peripartum infection, including Triple I, endomyometritis, and puerperal sepsis. Other contraindications include retained placenta requiring manual or surgical removal, uterine anomalies, and other medical contraindications to IUD use as recommended by the US Medical Eligibility Criteria.¹⁴

Does immediate IUD placement affect breastfeeding? There is theoretical risk of decreased milk supply or difficulty breastfeeding with initiation of progestin-only methods of contraception in the immediate postpartum period, as the rapid fall in progesterone levels initiates lactogenesis. However, progestin-only methods appear to have limited effect on initiation and continuation of breastfeeding in the immediate postpartum period.¹⁵

There were 2 secondary analyses of a pair of RCTs comparing immediate and delayed postpartum IUD use. Results from Levi and colleagues demonstrated no difference between immediate and interval IUD placement groups in the proportion of women who were breastfeeding at 6, 12, and 24 weeks.¹⁶ Chen and colleagues’ study was smaller; researchers found that women with interval IUD placement were more likely to be exclusively breastfeeding and continuing to breastfeed at 6 months compared with the immediate postpartum group.¹⁷

To better characterize the impact of progestin implants, in a recent meta-analysis, authors examined the use of subcutaneous levonorgestrel rods and found no difference in breastfeeding initiation and continuation rates between women who had them placed immediately versus 6 ̶ 8 weeks postpartum.¹²

Benefits of immediate postpartum IUD placement

One benefit of immediate postpartum IUD insertion is a reduction in short-interval pregnancies. In a study by Cohen and colleagues¹³ of young women aged 13 to 22 years choosing immediate postpartum IUDs (82) or implants (162), the authors found that 61% of women retained their IUDs at 12 months postpartum. Because few requested IUD removal over that time frame, the discontinuation rate at 1 year was primarily due to expulsions. Pregnancy rates at 1 year were 7.6% in the IUD group and 1.5% in the implant group. However, the 7.6% rate in the IUD group was lower than in previously studied adolescent control groups: 18.6% of control adolescents (38 of 204) using a contraceptive form other than a postpartum etonogestrel implant had repeat pregnancy at 1 year.^13,18

Not only are patients who receive immediate postpartum IUDs more likely to receive them and continue their use, but they are also satisfied with the experience of receiving the IUD and with the method of contraception. A small mixed methods study of 66 patients demonstrated that women were interested in obtaining immediate postpartum contraception to avoid some of the logistical and financial challenges of returning for a postpartum visit. They also felt that the IUD placement was less painful than expected, and they didn’t feel that the insertion process imposed on their birth experience. Many described relief to know that they had a safe and effective contraceptive method upon leaving the hospital.¹⁹ Other studies have shown that even among women who expel an IUD following immediate postpartum placement, many choose to replace it in order to continue it as a contraceptive method.^8,9,13

Continue to: Instructions for placement...

 

 

Instructions for placement

1. Counsel appropriately. Thoroughly counsel patients regarding their options for postpartum contraception, with emphasis on the benefits, risks, and contraindications. Current recommendations to reduce the risk of expulsion are to place the IUD in the delivery room or operating room within 10 minutes of placental delivery.

2. Post ̶ vaginal delivery. Following vaginal delivery, remove the IUD from the inserter, cut the strings to 10 cm and, using either fingers to grasp the wings of the IUD or ring forceps, advance the IUD to the fundus. Ultrasound guidance may be used, but it does not appear to be helpful in preventing expulsion.²⁰

3. Post ̶ cesarean delivery. Once the placenta is delivered, place the IUD using the inserter or a ring forceps at the fundus and guide the strings into the cervix, then close the hysterotomy.

ACOG does recommend formal trainingbefore placing postpartum IUDs. One resource they provide is a free online webinar (https://www.acog.org/education-and-events/webinars/long-acting-reversible-contra ception-overview-and-hands-on-practice-for-residents).³

CASE 1 Resolved

The patient was counseled in the office about her options, and she was most interested in immediate postpartum LNG-IUD placement. She went on to deliver a healthy baby vaginally at 39 weeks. Within 10 minutes of placental delivery, she received an LNG-IUD. She returned to the office 3 months later for STI screening; her examination revealed correct placement and no evidence of expulsion. She expressed that she was happy with her IUD and thankful that she was able to receive it immediately after the birth of her baby.

CASE 2 Nulliparous woman desires IUD for postpartum contraception

A 33-year-old nulliparous woman presents in the third trimester for a routine prenatal visit. She had used the LNG-IUD prior to getting pregnant and reports that she was very happy with it. She knows she wants to wait at least 2 years before trying to get pregnant again, and she would like to resume contraception as soon as it is reasonably safe to do so. She has read that it is possible to get an IUD immediately postpartum and asks about it as a possible option.

What barriers will she face in obtaining an immediate postpartum IUD?

There are many barriers for patients who may be good candidates for immediate postpartum contraception (TABLE 2). Many patients are unaware that it is a safe option, and they often have concerns about such risks as infection, perforation, and effects on breastfeeding. Additionally, providers may not prioritize adequate counseling about postpartum contraception when they face time constraints and a need to counsel about other pregnancy-related topics during the prenatal visit schedule.^7,21

System, hospital, and clinician barriers to immediate postpartum IUD use

Hospital implementation of a successful postpartum IUD program requires pharmacy, intrapartum and postpartum nursing staff, physicians, administration, and billing to be aligned. Hospital administration and pharmacists must stock IUDs in the pharmacy. Hospital nursing staff attitudes toward and knowledge of postpartum contraception can have profound influence on how they discuss safe and effective methods of postpartum contraception with patients who may not have received counseling during prenatal care.²² In a survey of 108 ACOG fellows, nearly 75% of ObGyn physicians did not offer immediate postpartum IUDs; lack of provider training, lack of IUD availability, and concern about cost and payment were found to be common reasons why.²¹ Additionally, Catholic-affiliated and rural institutions are less likely to offer it, whereas more urban, teaching hospitals are more likely to have programs in place.²³ Prior to 2012, immediate postpartum IUD insertions and device costs were part of the global Medicaid obstetric fee in most states, and both hospital systems and individual providers were concerned about loss of revenue.²³

In 2015, Washington and colleagues published a decision analysis that examined the cost-effectiveness and cost savings associated with immediate postpartum IUD use. Accounting for expulsion rates, they found that immediate postpartum IUD placement can save $282,540 per 1,000 women over 2 years; additionally, immediate postpartum IUD use can prevent 88 unintended pregnancies per 1,000 women over 2 years.²⁴ Not only do immediate postpartum IUDs have great potential to prevent individual patients from undesired short-interval pregnancies (FIGURE 1), but they can also save the system substantial health care dollars (FIGURE 2).

Overcoming barriers

Immediate postpartum IUD implementation is attainable with practice, policy, and institutional changes. Education and training programs geared toward providers and nursing staff can improve understanding of the benefits and risks of immediate postpartum IUD placement. Additionally, clinicians must provide comprehensive, nondirective counseling during the antepartum period, informing patients of all safe and effective options. Expulsion risks should be disclosed, as well as the benefit of not needing to return for a separate postpartum contraception appointment.

Since 2012, many state Medicaid agencies have decoupled reimbursement for inpatient postpartum IUD insertion from the delivery fee. By 2018, more than half of states adopted this practice. Commercial insurers have followed suit in some cases, and as such, both Medicaid and commercially insured patients have had increased access to immediate postpartum IUDs.²³ This has translated into increased uptake of immediate postpartum IUDs among both Medicaid and commercially insured patients. Koch et al conducted a retrospective cohort study comparing IUD use in patients 1 year before and 1 year after the policy changes, and they found a 10-fold increase in use of immediate postpartum IUDs.²⁵

While education, counseling, access, and changes in reimbursement may increase access in many hospital systems, some barriers, such as religious affiliation of the hospital system, may be impossible to overcome. A viable alternative to immediate postpartum IUD placement may be early postpartum IUD placement, which could allow patients to coordinate this procedure with 1- or 2-week return routine postpartum visits for CD recovery, mental health screenings, and/or well-baby visits. More data are necessary before recommending this universally, but Averbach and colleagues published a promising meta-analysis that demonstrated no complete expulsions in studies in which IUDs were placed between 2 and 4 weeks postpartum, and only a pooled partial expulsion rate (of immediate postpartum, early inpatient, early outpatient, and interval placement) of 3.7%.⁴

CASE 2 Resolved

Although the patient was interested in receiving a postpartum LNG-IUD immediately after her vaginal birth, she had to wait until her 6-week postpartum visit. The hospital did not stock IUDs for immediate postpartum IUD use, and her provider, having not been trained on immediate postpartum insertion, did not feel comfortable trying to place it in the immediate postpartum time frame. ●

CASE 1 Multiparous female with short-interval pregnancies desires contraception

A 24-year-old woman (G4P3) presents for a routine prenatal visit in the third trimester. Her last 2 pregnancies have occurred within 3 months of her prior birth. She endorses feeling overwhelmed with having 4 children under the age of 5 years, and she specifies that she would like to avoid another pregnancy for several years. She plans to breast and bottle feed, and she notes that she tends to forget to take pills. When you look back at her prior charts, you note that she did not return for her last 2 postpartum visits. What can you offer her? What would be a safe contraceptive option for her?
 

Intrauterine devices (IUDs) are safe, effective, and reported by patients to be satisfactory methods of contraception precisely because they are prone to less user error. The Contraceptive Choice Project demonstrated that patients are more apt to choose them when barriers such as cost and access are removed and nondirective counseling is provided.¹ Given that unintended pregnancy rates hover around 48%, the American College of Obstetricians and Gynecologists (ACOG) recommends them as first-line methods for pregnancy prevention.^2,3

For repeat pregnancies, the postpartum period is an especially vulnerable time—non-breastfeeding women will ovulate as soon as 25 days after birth, and by 8 weeks 30% will have ovulated.⁴ Approximately 40% to 57% of women report having unprotected intercourse before 6 weeks postpartum, and nearly 70% of all pregnancies in the first year postpartum are unintended.^3,5 Furthermore, patients at highest risk for short-interval pregnancy, such as adolescents, are less likely to return for a postpartum visit.³

Short-interval pregnancies confer greater fetal risk, including risks of low-birth weight, preterm birth, small for gestational age and increased risk of neonatal intensive care unit admission.⁶ Additionally, maternal health may be compromised during a short-interval pregnancy, particularly in medically complex patients due to increased risks of adverse pregnancy outcomes, such as postpartum bleeding or uterine rupture and disease progression.⁷ A 2006 meta-analysis by Conde-Agudelo and colleagues found that waiting at least 18 months between pregnancies was optimal for reducing these risks.⁶

Thus, the immediate postpartum period is an optimal time for addressing contraceptive needs and for preventing short-interval and unintended pregnancy. This article aims to provide evidence supporting the use of immediate postpartum IUDs, as well as their associated risks and barriers to use.

IUD types and routes for immediate postpartum insertion

There are several randomized controlled trials (RCTs) that examine the immediate postpartum use of copper IUDs and levonorgestrel-releasing (LNG) IUDs.^8-11 In 2010, Chen and colleagues compared placement of the immediate postpartum IUD following vaginal delivery with interval placement at 6–8 weeks postpartum. Of 51 patients enrolled in each arm, 98% received an IUD immediately postpartum, and 90% received one during their postpartum visit. There were 12 expulsions (24%) in the immediate postpartum IUD group, compared with 2 (4.4%) in the interval group. Expelled IUDs were replaced, and at 6 months both groups had similar rates of IUD use.⁸

Whitaker and colleagues demonstrated similar findings after randomizing a small group of women who had a cesarean delivery (CD) to interval or immediate placement. There were significantly more expulsions in the post-placental group (20%) than the interval group (0%), but there were more users of the IUD in the post-placental group than in the interval group at 12 months.⁹

Two RCTs, by Lester and colleagues and Levi et al, demonstrated successful placement of the copper IUD or LNG-IUD following CD, with few expulsions (0% and 8%, respectively). Patients who were randomized to immediate postpartum IUD placement were more likely to receive an IUD than those who were randomized to interval insertion, mostly due to lack of postpartum follow up. Both studies followed patients out to 6 months, and rates of IUD continuation and satisfaction were higher at this time in the immediate postpartum IUD groups.^10,11

Continue to: Risks, contraindications, and breastfeeding impact...

 

 

Risks, contraindications, and breastfeeding impact

What are the risks of immediate postpartum IUD placement? The highest risk of IUD placement in the immediate postpartum period appears to be expulsion (TABLE 1). In a meta-analysis conducted in 2022, which looked at 11 studies of immediate IUD insertion, the rates of expulsion were between 5% and 27%.^3,8,12,13 Results of a study by Cohen and colleagues demonstrated that most expulsions occurred within the first 12 weeks following delivery; of those expulsions that occurred, only 11% went unrecognized.¹³ Immediate postpartum IUD insertion does not increase the IUD-associated risks of perforation, infection, or immediate postpartum bleeding (although prolonged bleeding may be more common).¹²

Are there contraindications to placing an IUD immediately postpartum? The main contraindication to immediate postpartum IUD use is peripartum infection, including Triple I, endomyometritis, and puerperal sepsis. Other contraindications include retained placenta requiring manual or surgical removal, uterine anomalies, and other medical contraindications to IUD use as recommended by the US Medical Eligibility Criteria.¹⁴

Does immediate IUD placement affect breastfeeding? There is theoretical risk of decreased milk supply or difficulty breastfeeding with initiation of progestin-only methods of contraception in the immediate postpartum period, as the rapid fall in progesterone levels initiates lactogenesis. However, progestin-only methods appear to have limited effect on initiation and continuation of breastfeeding in the immediate postpartum period.¹⁵

There were 2 secondary analyses of a pair of RCTs comparing immediate and delayed postpartum IUD use. Results from Levi and colleagues demonstrated no difference between immediate and interval IUD placement groups in the proportion of women who were breastfeeding at 6, 12, and 24 weeks.¹⁶ Chen and colleagues’ study was smaller; researchers found that women with interval IUD placement were more likely to be exclusively breastfeeding and continuing to breastfeed at 6 months compared with the immediate postpartum group.¹⁷

To better characterize the impact of progestin implants, in a recent meta-analysis, authors examined the use of subcutaneous levonorgestrel rods and found no difference in breastfeeding initiation and continuation rates between women who had them placed immediately versus 6 ̶ 8 weeks postpartum.¹²

Benefits of immediate postpartum IUD placement

One benefit of immediate postpartum IUD insertion is a reduction in short-interval pregnancies. In a study by Cohen and colleagues¹³ of young women aged 13 to 22 years choosing immediate postpartum IUDs (82) or implants (162), the authors found that 61% of women retained their IUDs at 12 months postpartum. Because few requested IUD removal over that time frame, the discontinuation rate at 1 year was primarily due to expulsions. Pregnancy rates at 1 year were 7.6% in the IUD group and 1.5% in the implant group. However, the 7.6% rate in the IUD group was lower than in previously studied adolescent control groups: 18.6% of control adolescents (38 of 204) using a contraceptive form other than a postpartum etonogestrel implant had repeat pregnancy at 1 year.^13,18

Not only are patients who receive immediate postpartum IUDs more likely to receive them and continue their use, but they are also satisfied with the experience of receiving the IUD and with the method of contraception. A small mixed methods study of 66 patients demonstrated that women were interested in obtaining immediate postpartum contraception to avoid some of the logistical and financial challenges of returning for a postpartum visit. They also felt that the IUD placement was less painful than expected, and they didn’t feel that the insertion process imposed on their birth experience. Many described relief to know that they had a safe and effective contraceptive method upon leaving the hospital.¹⁹ Other studies have shown that even among women who expel an IUD following immediate postpartum placement, many choose to replace it in order to continue it as a contraceptive method.^8,9,13

Continue to: Instructions for placement...

 

 

Instructions for placement

1. Counsel appropriately. Thoroughly counsel patients regarding their options for postpartum contraception, with emphasis on the benefits, risks, and contraindications. Current recommendations to reduce the risk of expulsion are to place the IUD in the delivery room or operating room within 10 minutes of placental delivery.

2. Post ̶ vaginal delivery. Following vaginal delivery, remove the IUD from the inserter, cut the strings to 10 cm and, using either fingers to grasp the wings of the IUD or ring forceps, advance the IUD to the fundus. Ultrasound guidance may be used, but it does not appear to be helpful in preventing expulsion.²⁰

3. Post ̶ cesarean delivery. Once the placenta is delivered, place the IUD using the inserter or a ring forceps at the fundus and guide the strings into the cervix, then close the hysterotomy.

ACOG does recommend formal trainingbefore placing postpartum IUDs. One resource they provide is a free online webinar (https://www.acog.org/education-and-events/webinars/long-acting-reversible-contra ception-overview-and-hands-on-practice-for-residents).³

CASE 1 Resolved

The patient was counseled in the office about her options, and she was most interested in immediate postpartum LNG-IUD placement. She went on to deliver a healthy baby vaginally at 39 weeks. Within 10 minutes of placental delivery, she received an LNG-IUD. She returned to the office 3 months later for STI screening; her examination revealed correct placement and no evidence of expulsion. She expressed that she was happy with her IUD and thankful that she was able to receive it immediately after the birth of her baby.

CASE 2 Nulliparous woman desires IUD for postpartum contraception

A 33-year-old nulliparous woman presents in the third trimester for a routine prenatal visit. She had used the LNG-IUD prior to getting pregnant and reports that she was very happy with it. She knows she wants to wait at least 2 years before trying to get pregnant again, and she would like to resume contraception as soon as it is reasonably safe to do so. She has read that it is possible to get an IUD immediately postpartum and asks about it as a possible option.

What barriers will she face in obtaining an immediate postpartum IUD?

There are many barriers for patients who may be good candidates for immediate postpartum contraception (TABLE 2). Many patients are unaware that it is a safe option, and they often have concerns about such risks as infection, perforation, and effects on breastfeeding. Additionally, providers may not prioritize adequate counseling about postpartum contraception when they face time constraints and a need to counsel about other pregnancy-related topics during the prenatal visit schedule.^7,21

System, hospital, and clinician barriers to immediate postpartum IUD use

Hospital implementation of a successful postpartum IUD program requires pharmacy, intrapartum and postpartum nursing staff, physicians, administration, and billing to be aligned. Hospital administration and pharmacists must stock IUDs in the pharmacy. Hospital nursing staff attitudes toward and knowledge of postpartum contraception can have profound influence on how they discuss safe and effective methods of postpartum contraception with patients who may not have received counseling during prenatal care.²² In a survey of 108 ACOG fellows, nearly 75% of ObGyn physicians did not offer immediate postpartum IUDs; lack of provider training, lack of IUD availability, and concern about cost and payment were found to be common reasons why.²¹ Additionally, Catholic-affiliated and rural institutions are less likely to offer it, whereas more urban, teaching hospitals are more likely to have programs in place.²³ Prior to 2012, immediate postpartum IUD insertions and device costs were part of the global Medicaid obstetric fee in most states, and both hospital systems and individual providers were concerned about loss of revenue.²³

In 2015, Washington and colleagues published a decision analysis that examined the cost-effectiveness and cost savings associated with immediate postpartum IUD use. Accounting for expulsion rates, they found that immediate postpartum IUD placement can save $282,540 per 1,000 women over 2 years; additionally, immediate postpartum IUD use can prevent 88 unintended pregnancies per 1,000 women over 2 years.²⁴ Not only do immediate postpartum IUDs have great potential to prevent individual patients from undesired short-interval pregnancies (FIGURE 1), but they can also save the system substantial health care dollars (FIGURE 2).

Overcoming barriers

Immediate postpartum IUD implementation is attainable with practice, policy, and institutional changes. Education and training programs geared toward providers and nursing staff can improve understanding of the benefits and risks of immediate postpartum IUD placement. Additionally, clinicians must provide comprehensive, nondirective counseling during the antepartum period, informing patients of all safe and effective options. Expulsion risks should be disclosed, as well as the benefit of not needing to return for a separate postpartum contraception appointment.

Since 2012, many state Medicaid agencies have decoupled reimbursement for inpatient postpartum IUD insertion from the delivery fee. By 2018, more than half of states adopted this practice. Commercial insurers have followed suit in some cases, and as such, both Medicaid and commercially insured patients have had increased access to immediate postpartum IUDs.²³ This has translated into increased uptake of immediate postpartum IUDs among both Medicaid and commercially insured patients. Koch et al conducted a retrospective cohort study comparing IUD use in patients 1 year before and 1 year after the policy changes, and they found a 10-fold increase in use of immediate postpartum IUDs.²⁵

While education, counseling, access, and changes in reimbursement may increase access in many hospital systems, some barriers, such as religious affiliation of the hospital system, may be impossible to overcome. A viable alternative to immediate postpartum IUD placement may be early postpartum IUD placement, which could allow patients to coordinate this procedure with 1- or 2-week return routine postpartum visits for CD recovery, mental health screenings, and/or well-baby visits. More data are necessary before recommending this universally, but Averbach and colleagues published a promising meta-analysis that demonstrated no complete expulsions in studies in which IUDs were placed between 2 and 4 weeks postpartum, and only a pooled partial expulsion rate (of immediate postpartum, early inpatient, early outpatient, and interval placement) of 3.7%.⁴

CASE 2 Resolved

Although the patient was interested in receiving a postpartum LNG-IUD immediately after her vaginal birth, she had to wait until her 6-week postpartum visit. The hospital did not stock IUDs for immediate postpartum IUD use, and her provider, having not been trained on immediate postpartum insertion, did not feel comfortable trying to place it in the immediate postpartum time frame. ●

Advances in technology, including ubiquitous access to the internet and the capacity to transfer high-resolution representative images, have facilitated the adoption of telepathology by laboratories worldwide.^1-5 Telepathology includes the use of telecommunication links that enable transmission of digital pathology images for primary diagnosis, quality assurance (QA), education, research, or second opinion diagnoses.³ This improvement has culminated in approvals by the US Food and Drug Administration (FDA) of whole slide imaging (WSI) systems for surgical pathology slides: specifically, the Philips IntelliSite Digital Pathology Solution in 2017 and the Leica Aperio AT2 DX in 2020.^6-8 However, the approvals do not include telecytology due to lack of whole slide multiplanar scanning at different planes of focus or z-stacking capabilities.⁷

Long-term trends in pathology, specifically the slow reduction in the number of practicing pathologists available in the workforce compared with the total served population, along with the social distancing imperatives and disruptions brought about by the COVID-19 pandemic have made telepathology implementation pertinent to continue and improve pathology practice.^8-10

Description and Definitions

The primary modes of telepathology (static image telepathology, robotic telepathology, video microscopy, WSI, and multimodality telepathology) have been defined by the American Telemedicine Association (ATA).² WSI has been particularly suited for telepathology due to the ability to view digital slides in high resolution at various magnifications. These image files can also be viewed and shared with ease with other observers. Also, they take a shorter time to view compared with the use of a robotic microscope.³

Selection, Validation, and Implementation

WSI platforms vary in their characteristics and have several parameters, including but not limited to batch scanning vs continuous or random-access processing, throughput volume capacities, scan speed, cost, manual vs automatic loading of slides, image quality, slide capacity, flexibility for different slide sizes/features, telepathology capabilities once slide scanned, z-stacking, and regulatory approval status.⁸ Selection of the WSI device is dependent on need and cost considerations. For example, use for frozen section requires faster scanning speed and does not generally require a high throughput scanner.

Validation of telepathology by the testing site demonstrates that the new system performs as expected for its intended clinical use before being put into service and that the digital slides produced are acceptable for clinical diagnostic interpretation.¹¹ The College of American Pathologists (CAP) established WSI validation guidelines are part of the published laboratory standard of care.^11-13 An appropriate validation enables the benefits of telepathology while mitigating the risks.

There are 3 major CAP recommendations for validation. First, ≥ 60 cases should be included for each use case being validated with 20 additional cases for relevant ancillary applications not included in the 60 cases. Second, diagnostic concordance (ideally ≥ 95%) should be established between digital and glass slides for the same observer. Third, there should be a 2-week washout period between the viewing of digital and glass slides (Table 2).^12,13

Guidelines from the ATA establish that telepathology systems should be validated for clinical use, including non-WSI platforms.² Published validations of other non-WSI platforms (such as by robotic or multimodality telepathology) have followed the structure proposed in the guidelines by CAP for validating WSI.^14,15

Ensuring that all relevant responsibilities (clinical, facility, technical, training, documentation/archiving, quality management, and operations related) for the use of telepathology are met is another aspect of validation and implementation.² Clinical responsibilities include an agreement between the sending (referring) and receiving (consulting) parties on the information to accompany the digital material.² From ATA clinical guidelines, this includes identification information, provision to the consulting pathologist of all relevant clinical data, provision to retrieve for access any needed and/or relevant diagnostic material, and responsibility by referrer that the correct image/metadata was sent.² Involved parties should be trained to manage the materials being transmitted.²

Facility responsibilities include maintaining the standard of care defined by the facility and regulatory agencies.² The maintenance of accreditation, adherence to licensure requirements, and proper management of privileges to practice telepathology are also important.² Technical responsibilities include ensuring a proper validation that meets the standard of care and covers use cases.^2,11-13

All processes, training, and competencies should be followed and documented per standard facility operating procedures.² ATA recommends that telepathology should result in a formal report for diagnostic consultations, maintain logs of telepathology interactions or disclaimer statements, and have an appropriate retention policy.² The CAP recommends digital images used for primary diagnosis should be kept for 10 years if the original glass slides are not available.¹⁶ Once implemented, telepathology reports must be incorporated into the pathology and laboratory medicine department’s quality management plan for both the technical performance of the telepathology system and diagnostic performance of the pathologists using the system.² Operations responsibilities include ensuring that the telepathology system is maintained according to vendor recommendations and regulatory standards. Appropriate provisions for space and associated needs should be developed in conjunction with the information technology team of the facility to ensure appropriate security, privacy, and regulatory compliance.²

Applications and Uses

Telecytology. Rapid real-time telecytology has been documented to be useful in rapid on-site evaluations (ROSE) of the adequacy of fine needle aspirations (FNA).^17-21 Nevertheless, current Medicare reimbursement is limited given that ROSE is cost prohibitive, time consuming, and affects productivity in cytology laboratories.^17,22,23 Estimates of the time to provide ROSE for 1 procedure without telecytology range from 48.7 to 56.2 minutes.^17,23 The use of telecytology significantly reduces pathologist ROSE time without losing quality to about 12 minutes, of which only an average of 7.5 minutes was spent by the cytopathologist for the ROSE diagnosis.^17-21 ROSE also can be used for distant and remote locations to improve patient care.^17-21 Multiple vendors provide real-time telecytology service. Innovations using smartphone adapters, digital cameras that could work as their own IP addresses, and connection with high-speed dedicated connections with viewing platforms on high-sensitivity monitors can facilitate ROSE to improve patient management.^24,25 The successful accurate use of ROSE has been described; however, there are currently no FDA-approved telepathology ROSE platforms.^17-19,21-25

To date, the FDA has not approved any telecytology whole slide scanner due to a lack of z-stacking capability in submitted scanners.^7,21 Not all whole slide scanners offer z-stacking, though even in those that do offer it, the time necessary to scan the entire slide with adequate z-stacking takes too long to be clinically acceptable for many situations involving ROSE.²¹ WSI has also been used to develop international consensus for cytologic samples.²⁶ Published recommendations for the validation of these other modalities before usage follow the spirit of the CAP guidelines (as far as multiple cases with high concordance rates) for validation of WSI for diagnostic purposes but vary on the exact number of slides and acceptable concordance rate.^21,27 For ROSE with a robotic microscope without any on-site cytology personnel, documented standardized training of nonpathology staff members, such as the radiologist or other physician performing the FNA procedure, may be needed to enable the performance of ROSE telecytology and ensure compliance with regulations.^2,21 Besides ROSE, there are published validations for telecytology in primary diagnosis and QA, indicating a role for telecytology for diagnosis for laboratories that have properly validated and implemented the laboratory-developed test.^28-30

Frozen section. Telepathology has significant potential to improve access to frozen section consultation.^5,31-33 Benefits to improving access to frozen section include providing frozen section consultation at remote or off-site locations, increasing access to subspecialty consultation, improving workflow by eliminating the need to travel off-site to the frozen section case, cost savings in staff work time, and providing educational opportunities for pathology trainees.^5,31-33 In our experience, WSI with real-time viewing of frozen section allows for the assessment of transplant tissues, which is an evaluation that generally occurs at night. Discrepancies from frozen section telepathology using WSI to the final diagnosis may occur and those specific to WSI could result from slide or image quality, internet connectivity, and lack of training in using the telepathology system.³² Other issues that may lead to discrepancies between the frozen section diagnosis and the final diagnosis may occur with the review of glass slides by light microscopy.³⁴ Appropriate performance of validation, training, implementation, and quality control for telepathology can help in reaping the benefits while mitigating the risks.² In a large study comparing frozen section evaluation by telepathology with light microscopy, the sensitivity and specificity of frozen section were comparable between telepathology and light microscopy with a trend toward greater sensitivity by telepathology (0.92 and 0.99 for telepathology vs 0.90 and 0.99 by light microscopy alone, sensitivity and specificity, respectively).³³

Other applications. Evidence for efficacy in surgical pathology diagnosis led to FDA approval of the Philips IntelliSite Digital Pathology in 2017 and the Leica Aperio AT2 DX in 2020 WSI platforms.^6-8 The use of WSI in surgical pathology has been successfully validated or used in clinical practice at several pathology laboratory settings with documented benefits in the literature for primary and secondary diagnoses, QA, research, and education.^6-8,35-45 Benefits of telepathology include improved ergonomics and access to real-time pathologic services in remote areas or during on-site pathologist absence and expert second opinions. Telepathology also may reduce risk of slide loss during transport, shortened turnaround time, reduced costs of operation through workflow efficiencies, better load balancing, improve virtual collaboration, and digital storage of slides that may be irreplaceable.^3-8,35-45 Telepathology also has been shown to be useful for education, improving access to learning materials and increasing quality instructional materials at a lower cost.⁴⁵ The increased ease of collaboration with remote experts and access to slide material for other pathologists improves QA capabilities.^3-8,35-45 The availability of virtual slides is expected to promote further research in telepathology and pathology due to the increased availability of virtual material to researchers.^1,5,46

Telehematology. Published validations have shown effectiveness for hematopathology specimens, such as the peripheral smear. Telehematology also has demonstrated potential in a laboratory after proper validation and implementation as a laboratory-developed test.^37,47-49

Telemicrobiology and Computer-Assisted Pathologic Diagnosis. Telemicrobiology also has been successfully used for clinical, educational, and QA purposes.⁵⁰ The digitalization of slides involved with telepathology enables further innovation in machine learning for computer-assisted pathologic diagnosis (CAPD), which is already being used clinically for cervical Pap smears.²⁰ An artificial intelligence (AI)–based algorithm analyzes the slides to identify cells of interest, which are presented to the cytopathologist for confirmation.²⁰ However, the expansion of CAPD to include a variety of specimen types or diagnostic situations as well as safely and effectively take initiative in completing an accurate automated diagnosis requires additional development.^20,51,52 One of the key factors for machine learning to develop AI is the provision of a corpus of data.^51,52 Public, open-source data sources have been limited in size while private proprietary sources have highly restricted and expensive access; to address this, there is a current effort to build the world’s largest public open-source digital pathology corpus at Temple University Hospital, which may help enable innovations in the future.⁵²

Long-Term Trends/Applications

The COVID-19 pandemic has been unprecedented not only in its widespread morbidity and mortality, but also for the significant socioeconomic, health, lifestyle, societal, and workspace changes.^53-57 Specifically, the pandemic has introduced not only a need for social distancing and staff quarantines to prevent the spread of infection, but also a reduction in the workforce due to the stresses of COVID-19 (also known as the Great Resignation).⁵⁵ Before the pandemic, there was an existing downtrend in the number of pathologists in the US workforce.^9-10,58,59 From 2007 to 2017, the number of active pathologists in the US declined by 17.5% despite the increasing national population, resulting in not only an absolute decrease in the number of pathologists, but also an increasing population served per pathologist ratio.⁵⁹ Since 2017, this downtrend has continued; given the increasing loss of active pathologists from the workforce and the decreasing training of new pathologists, this decrease shows no signs of reversing even as the impact of the COVID-19 pandemic has begun to wane.^9,10,58-60

The advantages of telepathology in enabling social distancing and reducing travel to remote sites are known.^3-7,17 Given these advantages, some medical centers in the US have previously successfully validated and implemented telepathology operations earlier during the COVID-19 pandemic to ease workflow and ensure continued operations.^56,57 The use of telepathology also helps in balancing workload and continuing pathology operations even in light of the workforce reduction as cases no longer need to be signed out on site with glass slides but instead can be signed out at a remote laboratory. Although the impact of the COVID-19 pandemic on operations is decreasing, the capabilities for social distancing and reducing travel remain important to both improve operations and ensure resiliency in response to similar potential events.^3-7,17,60

Considering the long-term trends, the lessons of the COVID-19 pandemic, and the potential for future pandemics or other disasters, telepathology’s validation and implementation remains a reasonable choice for pathology practices looking to improve. A variety of practices not just in the general population, but also among US Department of Veterans Affairs medical centers (VAMCs) and the US Department of Defense Military Health System treating a veteran population can benefit from telepathology where it has previously been reported to have been reliable or successfully implemented.^61-63 Although the veteran population differs from the general population in several characteristics, such as the severity of disease, coexisting morbidities, and other history, given proper validation and implementation, telepathology’s usefulness extends across different pathology practice settings.^35-43,61-66

Limitations of Telepathology

In telepathology’s current state, there are limitations despite its immense promise.^6,35 These include initial capital costs, the additional training requirement, the additional time necessary to scan slides, technical challenges (ie, laboratory information system integration, color calibration, display artifacts, potential for small particle scanner omissions, and information technology dependence), the potential for slower evaluation per slide compared with optical microscopes, limitations of slide imaging (ie, z-stacking or lack of polarization on digital pathology), and occupational concerns regarding eye strain with increased computer monitor usage (ie, computer vision syndrome).^6,35 In addition, there are few telepathology scanners with FDA approval for WSI.^6-8

The improving technology of telepathology has made these limitations surmountable, including faster slide scanning and increasing digital storage capacity for large WSI files. Due to this improvement in technology, an increasing number of laboratory settings, have adopted telepathology as its advantages have begun to outweigh the limitations.^2-5 Additionally, the proper validation performed before implementing telepathology can help laboratories identify their unique challenges, troubleshoot, and resolve the limitations before use in clinical care.^11-13 Continuing QA during its use and implementation is important to ensure that telepathology performs as expected for clinical purposes despite its limitations.²

Conclusions

Telepathology is a promising technology that may improve pathology practice once properly validated and implemented.^1-8 Though there are barriers to this validation and implementation, particularly the capital costs and training, there are several potential benefits, including increased productivity, cost savings, improvement in the workflow, enhanced access to pathologic consultation, and adaptability of the pathology laboratory in an era of a decreased workforce and social distancing due to the COVID-19 pandemic.^1-8,55-56 This potential applies across the wide spectrum of potential telepathology uses from frozen section, telecytology (including ROSE) to primary and second opinion diagnoses.^1-8,17-33 The benefits also extends to QA, education, and research, as diagnoses can not only be rereviewed by specialty or second opinion consultation with ease, but also digital slides can be produced for educational and research purposes.^3-8,35-45 Settings that treat the general population and those focused on the care of veterans or members of the armed forces have reported similar reliability or successful implementation.^35-44,61-63 All in all, the use of telepathology represents an innovation that may transform the practice of pathology tomorrow.

Advances in technology, including ubiquitous access to the internet and the capacity to transfer high-resolution representative images, have facilitated the adoption of telepathology by laboratories worldwide.^1-5 Telepathology includes the use of telecommunication links that enable transmission of digital pathology images for primary diagnosis, quality assurance (QA), education, research, or second opinion diagnoses.³ This improvement has culminated in approvals by the US Food and Drug Administration (FDA) of whole slide imaging (WSI) systems for surgical pathology slides: specifically, the Philips IntelliSite Digital Pathology Solution in 2017 and the Leica Aperio AT2 DX in 2020.^6-8 However, the approvals do not include telecytology due to lack of whole slide multiplanar scanning at different planes of focus or z-stacking capabilities.⁷

Long-term trends in pathology, specifically the slow reduction in the number of practicing pathologists available in the workforce compared with the total served population, along with the social distancing imperatives and disruptions brought about by the COVID-19 pandemic have made telepathology implementation pertinent to continue and improve pathology practice.^8-10

Description and Definitions

The primary modes of telepathology (static image telepathology, robotic telepathology, video microscopy, WSI, and multimodality telepathology) have been defined by the American Telemedicine Association (ATA).² WSI has been particularly suited for telepathology due to the ability to view digital slides in high resolution at various magnifications. These image files can also be viewed and shared with ease with other observers. Also, they take a shorter time to view compared with the use of a robotic microscope.³

Selection, Validation, and Implementation

WSI platforms vary in their characteristics and have several parameters, including but not limited to batch scanning vs continuous or random-access processing, throughput volume capacities, scan speed, cost, manual vs automatic loading of slides, image quality, slide capacity, flexibility for different slide sizes/features, telepathology capabilities once slide scanned, z-stacking, and regulatory approval status.⁸ Selection of the WSI device is dependent on need and cost considerations. For example, use for frozen section requires faster scanning speed and does not generally require a high throughput scanner.

Validation of telepathology by the testing site demonstrates that the new system performs as expected for its intended clinical use before being put into service and that the digital slides produced are acceptable for clinical diagnostic interpretation.¹¹ The College of American Pathologists (CAP) established WSI validation guidelines are part of the published laboratory standard of care.^11-13 An appropriate validation enables the benefits of telepathology while mitigating the risks.

There are 3 major CAP recommendations for validation. First, ≥ 60 cases should be included for each use case being validated with 20 additional cases for relevant ancillary applications not included in the 60 cases. Second, diagnostic concordance (ideally ≥ 95%) should be established between digital and glass slides for the same observer. Third, there should be a 2-week washout period between the viewing of digital and glass slides (Table 2).^12,13

Guidelines from the ATA establish that telepathology systems should be validated for clinical use, including non-WSI platforms.² Published validations of other non-WSI platforms (such as by robotic or multimodality telepathology) have followed the structure proposed in the guidelines by CAP for validating WSI.^14,15

Ensuring that all relevant responsibilities (clinical, facility, technical, training, documentation/archiving, quality management, and operations related) for the use of telepathology are met is another aspect of validation and implementation.² Clinical responsibilities include an agreement between the sending (referring) and receiving (consulting) parties on the information to accompany the digital material.² From ATA clinical guidelines, this includes identification information, provision to the consulting pathologist of all relevant clinical data, provision to retrieve for access any needed and/or relevant diagnostic material, and responsibility by referrer that the correct image/metadata was sent.² Involved parties should be trained to manage the materials being transmitted.²

Facility responsibilities include maintaining the standard of care defined by the facility and regulatory agencies.² The maintenance of accreditation, adherence to licensure requirements, and proper management of privileges to practice telepathology are also important.² Technical responsibilities include ensuring a proper validation that meets the standard of care and covers use cases.^2,11-13

All processes, training, and competencies should be followed and documented per standard facility operating procedures.² ATA recommends that telepathology should result in a formal report for diagnostic consultations, maintain logs of telepathology interactions or disclaimer statements, and have an appropriate retention policy.² The CAP recommends digital images used for primary diagnosis should be kept for 10 years if the original glass slides are not available.¹⁶ Once implemented, telepathology reports must be incorporated into the pathology and laboratory medicine department’s quality management plan for both the technical performance of the telepathology system and diagnostic performance of the pathologists using the system.² Operations responsibilities include ensuring that the telepathology system is maintained according to vendor recommendations and regulatory standards. Appropriate provisions for space and associated needs should be developed in conjunction with the information technology team of the facility to ensure appropriate security, privacy, and regulatory compliance.²

Applications and Uses

Telecytology. Rapid real-time telecytology has been documented to be useful in rapid on-site evaluations (ROSE) of the adequacy of fine needle aspirations (FNA).^17-21 Nevertheless, current Medicare reimbursement is limited given that ROSE is cost prohibitive, time consuming, and affects productivity in cytology laboratories.^17,22,23 Estimates of the time to provide ROSE for 1 procedure without telecytology range from 48.7 to 56.2 minutes.^17,23 The use of telecytology significantly reduces pathologist ROSE time without losing quality to about 12 minutes, of which only an average of 7.5 minutes was spent by the cytopathologist for the ROSE diagnosis.^17-21 ROSE also can be used for distant and remote locations to improve patient care.^17-21 Multiple vendors provide real-time telecytology service. Innovations using smartphone adapters, digital cameras that could work as their own IP addresses, and connection with high-speed dedicated connections with viewing platforms on high-sensitivity monitors can facilitate ROSE to improve patient management.^24,25 The successful accurate use of ROSE has been described; however, there are currently no FDA-approved telepathology ROSE platforms.^17-19,21-25

To date, the FDA has not approved any telecytology whole slide scanner due to a lack of z-stacking capability in submitted scanners.^7,21 Not all whole slide scanners offer z-stacking, though even in those that do offer it, the time necessary to scan the entire slide with adequate z-stacking takes too long to be clinically acceptable for many situations involving ROSE.²¹ WSI has also been used to develop international consensus for cytologic samples.²⁶ Published recommendations for the validation of these other modalities before usage follow the spirit of the CAP guidelines (as far as multiple cases with high concordance rates) for validation of WSI for diagnostic purposes but vary on the exact number of slides and acceptable concordance rate.^21,27 For ROSE with a robotic microscope without any on-site cytology personnel, documented standardized training of nonpathology staff members, such as the radiologist or other physician performing the FNA procedure, may be needed to enable the performance of ROSE telecytology and ensure compliance with regulations.^2,21 Besides ROSE, there are published validations for telecytology in primary diagnosis and QA, indicating a role for telecytology for diagnosis for laboratories that have properly validated and implemented the laboratory-developed test.^28-30

Frozen section. Telepathology has significant potential to improve access to frozen section consultation.^5,31-33 Benefits to improving access to frozen section include providing frozen section consultation at remote or off-site locations, increasing access to subspecialty consultation, improving workflow by eliminating the need to travel off-site to the frozen section case, cost savings in staff work time, and providing educational opportunities for pathology trainees.^5,31-33 In our experience, WSI with real-time viewing of frozen section allows for the assessment of transplant tissues, which is an evaluation that generally occurs at night. Discrepancies from frozen section telepathology using WSI to the final diagnosis may occur and those specific to WSI could result from slide or image quality, internet connectivity, and lack of training in using the telepathology system.³² Other issues that may lead to discrepancies between the frozen section diagnosis and the final diagnosis may occur with the review of glass slides by light microscopy.³⁴ Appropriate performance of validation, training, implementation, and quality control for telepathology can help in reaping the benefits while mitigating the risks.² In a large study comparing frozen section evaluation by telepathology with light microscopy, the sensitivity and specificity of frozen section were comparable between telepathology and light microscopy with a trend toward greater sensitivity by telepathology (0.92 and 0.99 for telepathology vs 0.90 and 0.99 by light microscopy alone, sensitivity and specificity, respectively).³³

Other applications. Evidence for efficacy in surgical pathology diagnosis led to FDA approval of the Philips IntelliSite Digital Pathology in 2017 and the Leica Aperio AT2 DX in 2020 WSI platforms.^6-8 The use of WSI in surgical pathology has been successfully validated or used in clinical practice at several pathology laboratory settings with documented benefits in the literature for primary and secondary diagnoses, QA, research, and education.^6-8,35-45 Benefits of telepathology include improved ergonomics and access to real-time pathologic services in remote areas or during on-site pathologist absence and expert second opinions. Telepathology also may reduce risk of slide loss during transport, shortened turnaround time, reduced costs of operation through workflow efficiencies, better load balancing, improve virtual collaboration, and digital storage of slides that may be irreplaceable.^3-8,35-45 Telepathology also has been shown to be useful for education, improving access to learning materials and increasing quality instructional materials at a lower cost.⁴⁵ The increased ease of collaboration with remote experts and access to slide material for other pathologists improves QA capabilities.^3-8,35-45 The availability of virtual slides is expected to promote further research in telepathology and pathology due to the increased availability of virtual material to researchers.^1,5,46

Telehematology. Published validations have shown effectiveness for hematopathology specimens, such as the peripheral smear. Telehematology also has demonstrated potential in a laboratory after proper validation and implementation as a laboratory-developed test.^37,47-49

Telemicrobiology and Computer-Assisted Pathologic Diagnosis. Telemicrobiology also has been successfully used for clinical, educational, and QA purposes.⁵⁰ The digitalization of slides involved with telepathology enables further innovation in machine learning for computer-assisted pathologic diagnosis (CAPD), which is already being used clinically for cervical Pap smears.²⁰ An artificial intelligence (AI)–based algorithm analyzes the slides to identify cells of interest, which are presented to the cytopathologist for confirmation.²⁰ However, the expansion of CAPD to include a variety of specimen types or diagnostic situations as well as safely and effectively take initiative in completing an accurate automated diagnosis requires additional development.^20,51,52 One of the key factors for machine learning to develop AI is the provision of a corpus of data.^51,52 Public, open-source data sources have been limited in size while private proprietary sources have highly restricted and expensive access; to address this, there is a current effort to build the world’s largest public open-source digital pathology corpus at Temple University Hospital, which may help enable innovations in the future.⁵²

Long-Term Trends/Applications

The COVID-19 pandemic has been unprecedented not only in its widespread morbidity and mortality, but also for the significant socioeconomic, health, lifestyle, societal, and workspace changes.^53-57 Specifically, the pandemic has introduced not only a need for social distancing and staff quarantines to prevent the spread of infection, but also a reduction in the workforce due to the stresses of COVID-19 (also known as the Great Resignation).⁵⁵ Before the pandemic, there was an existing downtrend in the number of pathologists in the US workforce.^9-10,58,59 From 2007 to 2017, the number of active pathologists in the US declined by 17.5% despite the increasing national population, resulting in not only an absolute decrease in the number of pathologists, but also an increasing population served per pathologist ratio.⁵⁹ Since 2017, this downtrend has continued; given the increasing loss of active pathologists from the workforce and the decreasing training of new pathologists, this decrease shows no signs of reversing even as the impact of the COVID-19 pandemic has begun to wane.^9,10,58-60

The advantages of telepathology in enabling social distancing and reducing travel to remote sites are known.^3-7,17 Given these advantages, some medical centers in the US have previously successfully validated and implemented telepathology operations earlier during the COVID-19 pandemic to ease workflow and ensure continued operations.^56,57 The use of telepathology also helps in balancing workload and continuing pathology operations even in light of the workforce reduction as cases no longer need to be signed out on site with glass slides but instead can be signed out at a remote laboratory. Although the impact of the COVID-19 pandemic on operations is decreasing, the capabilities for social distancing and reducing travel remain important to both improve operations and ensure resiliency in response to similar potential events.^3-7,17,60

Considering the long-term trends, the lessons of the COVID-19 pandemic, and the potential for future pandemics or other disasters, telepathology’s validation and implementation remains a reasonable choice for pathology practices looking to improve. A variety of practices not just in the general population, but also among US Department of Veterans Affairs medical centers (VAMCs) and the US Department of Defense Military Health System treating a veteran population can benefit from telepathology where it has previously been reported to have been reliable or successfully implemented.^61-63 Although the veteran population differs from the general population in several characteristics, such as the severity of disease, coexisting morbidities, and other history, given proper validation and implementation, telepathology’s usefulness extends across different pathology practice settings.^35-43,61-66

Limitations of Telepathology

In telepathology’s current state, there are limitations despite its immense promise.^6,35 These include initial capital costs, the additional training requirement, the additional time necessary to scan slides, technical challenges (ie, laboratory information system integration, color calibration, display artifacts, potential for small particle scanner omissions, and information technology dependence), the potential for slower evaluation per slide compared with optical microscopes, limitations of slide imaging (ie, z-stacking or lack of polarization on digital pathology), and occupational concerns regarding eye strain with increased computer monitor usage (ie, computer vision syndrome).^6,35 In addition, there are few telepathology scanners with FDA approval for WSI.^6-8

The improving technology of telepathology has made these limitations surmountable, including faster slide scanning and increasing digital storage capacity for large WSI files. Due to this improvement in technology, an increasing number of laboratory settings, have adopted telepathology as its advantages have begun to outweigh the limitations.^2-5 Additionally, the proper validation performed before implementing telepathology can help laboratories identify their unique challenges, troubleshoot, and resolve the limitations before use in clinical care.^11-13 Continuing QA during its use and implementation is important to ensure that telepathology performs as expected for clinical purposes despite its limitations.²

Conclusions

Telepathology is a promising technology that may improve pathology practice once properly validated and implemented.^1-8 Though there are barriers to this validation and implementation, particularly the capital costs and training, there are several potential benefits, including increased productivity, cost savings, improvement in the workflow, enhanced access to pathologic consultation, and adaptability of the pathology laboratory in an era of a decreased workforce and social distancing due to the COVID-19 pandemic.^1-8,55-56 This potential applies across the wide spectrum of potential telepathology uses from frozen section, telecytology (including ROSE) to primary and second opinion diagnoses.^1-8,17-33 The benefits also extends to QA, education, and research, as diagnoses can not only be rereviewed by specialty or second opinion consultation with ease, but also digital slides can be produced for educational and research purposes.^3-8,35-45 Settings that treat the general population and those focused on the care of veterans or members of the armed forces have reported similar reliability or successful implementation.^35-44,61-63 All in all, the use of telepathology represents an innovation that may transform the practice of pathology tomorrow.

Advances in technology, including ubiquitous access to the internet and the capacity to transfer high-resolution representative images, have facilitated the adoption of telepathology by laboratories worldwide.^1-5 Telepathology includes the use of telecommunication links that enable transmission of digital pathology images for primary diagnosis, quality assurance (QA), education, research, or second opinion diagnoses.³ This improvement has culminated in approvals by the US Food and Drug Administration (FDA) of whole slide imaging (WSI) systems for surgical pathology slides: specifically, the Philips IntelliSite Digital Pathology Solution in 2017 and the Leica Aperio AT2 DX in 2020.^6-8 However, the approvals do not include telecytology due to lack of whole slide multiplanar scanning at different planes of focus or z-stacking capabilities.⁷

Long-term trends in pathology, specifically the slow reduction in the number of practicing pathologists available in the workforce compared with the total served population, along with the social distancing imperatives and disruptions brought about by the COVID-19 pandemic have made telepathology implementation pertinent to continue and improve pathology practice.^8-10

Description and Definitions

The primary modes of telepathology (static image telepathology, robotic telepathology, video microscopy, WSI, and multimodality telepathology) have been defined by the American Telemedicine Association (ATA).² WSI has been particularly suited for telepathology due to the ability to view digital slides in high resolution at various magnifications. These image files can also be viewed and shared with ease with other observers. Also, they take a shorter time to view compared with the use of a robotic microscope.³

Selection, Validation, and Implementation

WSI platforms vary in their characteristics and have several parameters, including but not limited to batch scanning vs continuous or random-access processing, throughput volume capacities, scan speed, cost, manual vs automatic loading of slides, image quality, slide capacity, flexibility for different slide sizes/features, telepathology capabilities once slide scanned, z-stacking, and regulatory approval status.⁸ Selection of the WSI device is dependent on need and cost considerations. For example, use for frozen section requires faster scanning speed and does not generally require a high throughput scanner.

Validation of telepathology by the testing site demonstrates that the new system performs as expected for its intended clinical use before being put into service and that the digital slides produced are acceptable for clinical diagnostic interpretation.¹¹ The College of American Pathologists (CAP) established WSI validation guidelines are part of the published laboratory standard of care.^11-13 An appropriate validation enables the benefits of telepathology while mitigating the risks.

There are 3 major CAP recommendations for validation. First, ≥ 60 cases should be included for each use case being validated with 20 additional cases for relevant ancillary applications not included in the 60 cases. Second, diagnostic concordance (ideally ≥ 95%) should be established between digital and glass slides for the same observer. Third, there should be a 2-week washout period between the viewing of digital and glass slides (Table 2).^12,13

Guidelines from the ATA establish that telepathology systems should be validated for clinical use, including non-WSI platforms.² Published validations of other non-WSI platforms (such as by robotic or multimodality telepathology) have followed the structure proposed in the guidelines by CAP for validating WSI.^14,15

Ensuring that all relevant responsibilities (clinical, facility, technical, training, documentation/archiving, quality management, and operations related) for the use of telepathology are met is another aspect of validation and implementation.² Clinical responsibilities include an agreement between the sending (referring) and receiving (consulting) parties on the information to accompany the digital material.² From ATA clinical guidelines, this includes identification information, provision to the consulting pathologist of all relevant clinical data, provision to retrieve for access any needed and/or relevant diagnostic material, and responsibility by referrer that the correct image/metadata was sent.² Involved parties should be trained to manage the materials being transmitted.²

Facility responsibilities include maintaining the standard of care defined by the facility and regulatory agencies.² The maintenance of accreditation, adherence to licensure requirements, and proper management of privileges to practice telepathology are also important.² Technical responsibilities include ensuring a proper validation that meets the standard of care and covers use cases.^2,11-13

All processes, training, and competencies should be followed and documented per standard facility operating procedures.² ATA recommends that telepathology should result in a formal report for diagnostic consultations, maintain logs of telepathology interactions or disclaimer statements, and have an appropriate retention policy.² The CAP recommends digital images used for primary diagnosis should be kept for 10 years if the original glass slides are not available.¹⁶ Once implemented, telepathology reports must be incorporated into the pathology and laboratory medicine department’s quality management plan for both the technical performance of the telepathology system and diagnostic performance of the pathologists using the system.² Operations responsibilities include ensuring that the telepathology system is maintained according to vendor recommendations and regulatory standards. Appropriate provisions for space and associated needs should be developed in conjunction with the information technology team of the facility to ensure appropriate security, privacy, and regulatory compliance.²

Applications and Uses

Telecytology. Rapid real-time telecytology has been documented to be useful in rapid on-site evaluations (ROSE) of the adequacy of fine needle aspirations (FNA).^17-21 Nevertheless, current Medicare reimbursement is limited given that ROSE is cost prohibitive, time consuming, and affects productivity in cytology laboratories.^17,22,23 Estimates of the time to provide ROSE for 1 procedure without telecytology range from 48.7 to 56.2 minutes.^17,23 The use of telecytology significantly reduces pathologist ROSE time without losing quality to about 12 minutes, of which only an average of 7.5 minutes was spent by the cytopathologist for the ROSE diagnosis.^17-21 ROSE also can be used for distant and remote locations to improve patient care.^17-21 Multiple vendors provide real-time telecytology service. Innovations using smartphone adapters, digital cameras that could work as their own IP addresses, and connection with high-speed dedicated connections with viewing platforms on high-sensitivity monitors can facilitate ROSE to improve patient management.^24,25 The successful accurate use of ROSE has been described; however, there are currently no FDA-approved telepathology ROSE platforms.^17-19,21-25

To date, the FDA has not approved any telecytology whole slide scanner due to a lack of z-stacking capability in submitted scanners.^7,21 Not all whole slide scanners offer z-stacking, though even in those that do offer it, the time necessary to scan the entire slide with adequate z-stacking takes too long to be clinically acceptable for many situations involving ROSE.²¹ WSI has also been used to develop international consensus for cytologic samples.²⁶ Published recommendations for the validation of these other modalities before usage follow the spirit of the CAP guidelines (as far as multiple cases with high concordance rates) for validation of WSI for diagnostic purposes but vary on the exact number of slides and acceptable concordance rate.^21,27 For ROSE with a robotic microscope without any on-site cytology personnel, documented standardized training of nonpathology staff members, such as the radiologist or other physician performing the FNA procedure, may be needed to enable the performance of ROSE telecytology and ensure compliance with regulations.^2,21 Besides ROSE, there are published validations for telecytology in primary diagnosis and QA, indicating a role for telecytology for diagnosis for laboratories that have properly validated and implemented the laboratory-developed test.^28-30

Frozen section. Telepathology has significant potential to improve access to frozen section consultation.^5,31-33 Benefits to improving access to frozen section include providing frozen section consultation at remote or off-site locations, increasing access to subspecialty consultation, improving workflow by eliminating the need to travel off-site to the frozen section case, cost savings in staff work time, and providing educational opportunities for pathology trainees.^5,31-33 In our experience, WSI with real-time viewing of frozen section allows for the assessment of transplant tissues, which is an evaluation that generally occurs at night. Discrepancies from frozen section telepathology using WSI to the final diagnosis may occur and those specific to WSI could result from slide or image quality, internet connectivity, and lack of training in using the telepathology system.³² Other issues that may lead to discrepancies between the frozen section diagnosis and the final diagnosis may occur with the review of glass slides by light microscopy.³⁴ Appropriate performance of validation, training, implementation, and quality control for telepathology can help in reaping the benefits while mitigating the risks.² In a large study comparing frozen section evaluation by telepathology with light microscopy, the sensitivity and specificity of frozen section were comparable between telepathology and light microscopy with a trend toward greater sensitivity by telepathology (0.92 and 0.99 for telepathology vs 0.90 and 0.99 by light microscopy alone, sensitivity and specificity, respectively).³³

Other applications. Evidence for efficacy in surgical pathology diagnosis led to FDA approval of the Philips IntelliSite Digital Pathology in 2017 and the Leica Aperio AT2 DX in 2020 WSI platforms.^6-8 The use of WSI in surgical pathology has been successfully validated or used in clinical practice at several pathology laboratory settings with documented benefits in the literature for primary and secondary diagnoses, QA, research, and education.^6-8,35-45 Benefits of telepathology include improved ergonomics and access to real-time pathologic services in remote areas or during on-site pathologist absence and expert second opinions. Telepathology also may reduce risk of slide loss during transport, shortened turnaround time, reduced costs of operation through workflow efficiencies, better load balancing, improve virtual collaboration, and digital storage of slides that may be irreplaceable.^3-8,35-45 Telepathology also has been shown to be useful for education, improving access to learning materials and increasing quality instructional materials at a lower cost.⁴⁵ The increased ease of collaboration with remote experts and access to slide material for other pathologists improves QA capabilities.^3-8,35-45 The availability of virtual slides is expected to promote further research in telepathology and pathology due to the increased availability of virtual material to researchers.^1,5,46

Telehematology. Published validations have shown effectiveness for hematopathology specimens, such as the peripheral smear. Telehematology also has demonstrated potential in a laboratory after proper validation and implementation as a laboratory-developed test.^37,47-49

Telemicrobiology and Computer-Assisted Pathologic Diagnosis. Telemicrobiology also has been successfully used for clinical, educational, and QA purposes.⁵⁰ The digitalization of slides involved with telepathology enables further innovation in machine learning for computer-assisted pathologic diagnosis (CAPD), which is already being used clinically for cervical Pap smears.²⁰ An artificial intelligence (AI)–based algorithm analyzes the slides to identify cells of interest, which are presented to the cytopathologist for confirmation.²⁰ However, the expansion of CAPD to include a variety of specimen types or diagnostic situations as well as safely and effectively take initiative in completing an accurate automated diagnosis requires additional development.^20,51,52 One of the key factors for machine learning to develop AI is the provision of a corpus of data.^51,52 Public, open-source data sources have been limited in size while private proprietary sources have highly restricted and expensive access; to address this, there is a current effort to build the world’s largest public open-source digital pathology corpus at Temple University Hospital, which may help enable innovations in the future.⁵²

Long-Term Trends/Applications

The COVID-19 pandemic has been unprecedented not only in its widespread morbidity and mortality, but also for the significant socioeconomic, health, lifestyle, societal, and workspace changes.^53-57 Specifically, the pandemic has introduced not only a need for social distancing and staff quarantines to prevent the spread of infection, but also a reduction in the workforce due to the stresses of COVID-19 (also known as the Great Resignation).⁵⁵ Before the pandemic, there was an existing downtrend in the number of pathologists in the US workforce.^9-10,58,59 From 2007 to 2017, the number of active pathologists in the US declined by 17.5% despite the increasing national population, resulting in not only an absolute decrease in the number of pathologists, but also an increasing population served per pathologist ratio.⁵⁹ Since 2017, this downtrend has continued; given the increasing loss of active pathologists from the workforce and the decreasing training of new pathologists, this decrease shows no signs of reversing even as the impact of the COVID-19 pandemic has begun to wane.^9,10,58-60

The advantages of telepathology in enabling social distancing and reducing travel to remote sites are known.^3-7,17 Given these advantages, some medical centers in the US have previously successfully validated and implemented telepathology operations earlier during the COVID-19 pandemic to ease workflow and ensure continued operations.^56,57 The use of telepathology also helps in balancing workload and continuing pathology operations even in light of the workforce reduction as cases no longer need to be signed out on site with glass slides but instead can be signed out at a remote laboratory. Although the impact of the COVID-19 pandemic on operations is decreasing, the capabilities for social distancing and reducing travel remain important to both improve operations and ensure resiliency in response to similar potential events.^3-7,17,60

Considering the long-term trends, the lessons of the COVID-19 pandemic, and the potential for future pandemics or other disasters, telepathology’s validation and implementation remains a reasonable choice for pathology practices looking to improve. A variety of practices not just in the general population, but also among US Department of Veterans Affairs medical centers (VAMCs) and the US Department of Defense Military Health System treating a veteran population can benefit from telepathology where it has previously been reported to have been reliable or successfully implemented.^61-63 Although the veteran population differs from the general population in several characteristics, such as the severity of disease, coexisting morbidities, and other history, given proper validation and implementation, telepathology’s usefulness extends across different pathology practice settings.^35-43,61-66

Limitations of Telepathology

In telepathology’s current state, there are limitations despite its immense promise.^6,35 These include initial capital costs, the additional training requirement, the additional time necessary to scan slides, technical challenges (ie, laboratory information system integration, color calibration, display artifacts, potential for small particle scanner omissions, and information technology dependence), the potential for slower evaluation per slide compared with optical microscopes, limitations of slide imaging (ie, z-stacking or lack of polarization on digital pathology), and occupational concerns regarding eye strain with increased computer monitor usage (ie, computer vision syndrome).^6,35 In addition, there are few telepathology scanners with FDA approval for WSI.^6-8

The improving technology of telepathology has made these limitations surmountable, including faster slide scanning and increasing digital storage capacity for large WSI files. Due to this improvement in technology, an increasing number of laboratory settings, have adopted telepathology as its advantages have begun to outweigh the limitations.^2-5 Additionally, the proper validation performed before implementing telepathology can help laboratories identify their unique challenges, troubleshoot, and resolve the limitations before use in clinical care.^11-13 Continuing QA during its use and implementation is important to ensure that telepathology performs as expected for clinical purposes despite its limitations.²

Conclusions

Telepathology is a promising technology that may improve pathology practice once properly validated and implemented.^1-8 Though there are barriers to this validation and implementation, particularly the capital costs and training, there are several potential benefits, including increased productivity, cost savings, improvement in the workflow, enhanced access to pathologic consultation, and adaptability of the pathology laboratory in an era of a decreased workforce and social distancing due to the COVID-19 pandemic.^1-8,55-56 This potential applies across the wide spectrum of potential telepathology uses from frozen section, telecytology (including ROSE) to primary and second opinion diagnoses.^1-8,17-33 The benefits also extends to QA, education, and research, as diagnoses can not only be rereviewed by specialty or second opinion consultation with ease, but also digital slides can be produced for educational and research purposes.^3-8,35-45 Settings that treat the general population and those focused on the care of veterans or members of the armed forces have reported similar reliability or successful implementation.^35-44,61-63 All in all, the use of telepathology represents an innovation that may transform the practice of pathology tomorrow.

Pain and pruritus are the most common complaints in patients who present to vulvar clinics.¹ These symptoms can be related to a variety of conditions, including vulvar lesions. There are both common and uncommon vulvar lesions. Vulvar lesions can be skin colored, yellow, and red. Certain lesions can be diagnosed with history and physical examination alone. Some more common lesions include acrochordons (skin tags), benign growths that are common in patients with diabetes, obesity, and pregnancy.^2,3 Other common vulvar lesions are papillomatosis, lichen simplex chronicus, and epidermoid cysts. Other lesions include low- and high-grade squamous intraepithelial lesions (HSIL).⁴ These lesions require biopsy for diagnosis as high-grade lesions require treatment. HSIL of the vulva is considered a premalignancy that necessitates treatment.⁵ Other lesions that can present with vulvar complaints are molluscum contagiosum, Bartholin gland duct cyst, intradermal melanocytic nevus, and squamous cell carcinoma. 

Rarely, other less common conditions can present as vulvar lesions. Syringomas are benign eccrine sweat gland neoplasms. They are more commonly found on the face, neck, or chest.⁶ On the vulva they are generally small subcutaneous skin-colored papules.⁷ They may be asymptomatic and noted only on routine examination. 

Vulvar syringomas also may present with symptoms. On the vulva, syringomas often present as pruritic papules that can be isolated or multifocal. Often on the labia majora they range in size from 2 to 20 mm.⁸

They can coalesce to form a larger lesion. They also may be described as painful. When  syringomas are pruritic, the overlying skin may appear thickened from rubbing or scratching, and excoriations may be present. 

Since vulvar syringomas are rare, there is no standard treatment. Biopsy is necessary for definitive diagnosis. For asymptomatic cases, expectant management is warranted. In symptomatic cases treatment can be considered. Treatment options include cryotherapy, laser ablation, and intralesional electrodissection.⁸ Intralesional electrodissection and curettage also has been described as treatment.⁹ Other treatment options include surgical excision of individual lesions or larger excisions if multifocal. 

The case study described in "Case letter: Vulvar syringoma" highlights the diagnostic and therapeutic challenges associated with rare lesions of the vulva. Referral to a specialty clinic may be warranted in these challenging cases. ●

Pain and pruritus are the most common complaints in patients who present to vulvar clinics.¹ These symptoms can be related to a variety of conditions, including vulvar lesions. There are both common and uncommon vulvar lesions. Vulvar lesions can be skin colored, yellow, and red. Certain lesions can be diagnosed with history and physical examination alone. Some more common lesions include acrochordons (skin tags), benign growths that are common in patients with diabetes, obesity, and pregnancy.^2,3 Other common vulvar lesions are papillomatosis, lichen simplex chronicus, and epidermoid cysts. Other lesions include low- and high-grade squamous intraepithelial lesions (HSIL).⁴ These lesions require biopsy for diagnosis as high-grade lesions require treatment. HSIL of the vulva is considered a premalignancy that necessitates treatment.⁵ Other lesions that can present with vulvar complaints are molluscum contagiosum, Bartholin gland duct cyst, intradermal melanocytic nevus, and squamous cell carcinoma. 

Rarely, other less common conditions can present as vulvar lesions. Syringomas are benign eccrine sweat gland neoplasms. They are more commonly found on the face, neck, or chest.⁶ On the vulva they are generally small subcutaneous skin-colored papules.⁷ They may be asymptomatic and noted only on routine examination. 

Vulvar syringomas also may present with symptoms. On the vulva, syringomas often present as pruritic papules that can be isolated or multifocal. Often on the labia majora they range in size from 2 to 20 mm.⁸

They can coalesce to form a larger lesion. They also may be described as painful. When  syringomas are pruritic, the overlying skin may appear thickened from rubbing or scratching, and excoriations may be present. 

Since vulvar syringomas are rare, there is no standard treatment. Biopsy is necessary for definitive diagnosis. For asymptomatic cases, expectant management is warranted. In symptomatic cases treatment can be considered. Treatment options include cryotherapy, laser ablation, and intralesional electrodissection.⁸ Intralesional electrodissection and curettage also has been described as treatment.⁹ Other treatment options include surgical excision of individual lesions or larger excisions if multifocal. 

The case study described in "Case letter: Vulvar syringoma" highlights the diagnostic and therapeutic challenges associated with rare lesions of the vulva. Referral to a specialty clinic may be warranted in these challenging cases. ●

Pain and pruritus are the most common complaints in patients who present to vulvar clinics.¹ These symptoms can be related to a variety of conditions, including vulvar lesions. There are both common and uncommon vulvar lesions. Vulvar lesions can be skin colored, yellow, and red. Certain lesions can be diagnosed with history and physical examination alone. Some more common lesions include acrochordons (skin tags), benign growths that are common in patients with diabetes, obesity, and pregnancy.^2,3 Other common vulvar lesions are papillomatosis, lichen simplex chronicus, and epidermoid cysts. Other lesions include low- and high-grade squamous intraepithelial lesions (HSIL).⁴ These lesions require biopsy for diagnosis as high-grade lesions require treatment. HSIL of the vulva is considered a premalignancy that necessitates treatment.⁵ Other lesions that can present with vulvar complaints are molluscum contagiosum, Bartholin gland duct cyst, intradermal melanocytic nevus, and squamous cell carcinoma. 

Rarely, other less common conditions can present as vulvar lesions. Syringomas are benign eccrine sweat gland neoplasms. They are more commonly found on the face, neck, or chest.⁶ On the vulva they are generally small subcutaneous skin-colored papules.⁷ They may be asymptomatic and noted only on routine examination. 

Vulvar syringomas also may present with symptoms. On the vulva, syringomas often present as pruritic papules that can be isolated or multifocal. Often on the labia majora they range in size from 2 to 20 mm.⁸

They can coalesce to form a larger lesion. They also may be described as painful. When  syringomas are pruritic, the overlying skin may appear thickened from rubbing or scratching, and excoriations may be present. 

Since vulvar syringomas are rare, there is no standard treatment. Biopsy is necessary for definitive diagnosis. For asymptomatic cases, expectant management is warranted. In symptomatic cases treatment can be considered. Treatment options include cryotherapy, laser ablation, and intralesional electrodissection.⁸ Intralesional electrodissection and curettage also has been described as treatment.⁹ Other treatment options include surgical excision of individual lesions or larger excisions if multifocal. 

The case study described in "Case letter: Vulvar syringoma" highlights the diagnostic and therapeutic challenges associated with rare lesions of the vulva. Referral to a specialty clinic may be warranted in these challenging cases. ●

An elevated serum level of cholesterol has been recognized as a risk factor for atherosclerotic cardiovascular disease (ASCVD) since the publication of the Framingham Study in 1961.¹ Although clinical outcomes related to ASCVD have improved in recent decades, ASCVD remains the leading cause of morbidity and mortality across the globe and remains, in the United States, the leading cause of death among most racial and ethnic groups. Much of this persistent disease burden can be attributed to inadequate control of ASCVD risk factors and suboptimal implementation of prevention strategies in the general population.²

The most recent (2019) iteration of the American College of Cardiology/American Heart Association (ACC/AHA) Guideline on the Primary Prevention of Cardiovascular Disease emphasizes a comprehensive, patient-centered, team-based approach to the management of ASCVD risk factors.² In this article, I review how, first, medication to reduce ASCVD risk should be considered only when a patient’s risk is sufficiently high and, second, shared decision-making and social determinants of health should, in all cases, guide and inform optimal implementation of treatment.²

Estimating risk for ASCVD by ascertaining LDL-C

• The Friedewald equation. Traditionally, low-density lipoprotein cholesterol (LDL-C) is estimated using the Friedewald equation^a applied to a fasting lipid profile. In patients who have a low level of LDL-C (< 70 mg/dL), however, the Friedewald equation becomes less accurate; in patients with hypertriglyceridemia (TG ≥ 400 mg/dL),estimation of LDL-C is invalid.
• The Martin–Hopkins equation offers a validated estimation of LDL-C when the LDL-C value is < 70 mg/dL.³ This equation—in which the fixed factor of 5 used in the Friedewald equation to estimate very low-density lipoprotein cholesterol is replaced by an adjustable factor that is based on the patient’s non-HDL-C (ie, TC–HDL-C) and TG values—is preferred by the ACC/AHA Task Force on Clinical Practice Guidelines in this clinical circumstance.⁴
• National Institutes of Health equation. This newer equation provides an accurate estimate of the LDL-C level in patients whose TG value is ≤ 800 mg/dL. The equation has not been fully validated for clinical use, however.⁵
• Direct measurement obviates the need for an equation to estimate LDL-C, but the test is not available in all health care settings.

For adults ≥ 20 years of age who are not receiving lipid-lowering therapy, a nonfasting lipid profile can be used to estimate ASCVD risk and document the baseline LDL-C level. If the TG level is ≥ 400 mg/dL, the test should be administered in the fasting state.⁴

• Apolipoprotein B. Alternatively, apolipoprotein B (apoB) can be measured. Because each LDL-C particle contains 1 apoB molecule, the apoB level describes the LDL-C level more accurately than a calculation of LDL-C. Many patients with type 2 diabetes and metabolic syndrome have a relatively low calculated LDL-C (thereby falsely reassuring the testing clinician) but have an elevated apoB level. An apoB level ≥ 130 mg/dL corresponds to an LDL-C level >160 mg/dL.⁴
• Calculation of non-HDL-C. Because the nonfasting state does not have a significant impact on a patient’s TC and HDL-C levels, the non-HDL-C level also can be calculated from the results of a nonfasting lipid profile.

Non-HDL-C and apoB are equivalent predictors of ASCVD risk. These 2 assessments might offer better risk estimation than other available tools in patients who have type 2 diabetes and metabolic syndrome.⁶

Continue to: Applying the estimate of 10-year ASCVD risk...

 

 

Applying the estimate of 10-year ASCVD risk

Your recommendation for preventive intervention, such as lipid-lowering therapy, should be based on the estimated 10-year risk for ASCVD. Although multiple validated risk assessment tools are available, ACC/AHA recommends the pooled cohort risk equations (PCE), introduced in the 2013 ACC/AHA cholesterol treatment guidelines. The Framingham Heart Study now recommends the ACC/AHA PCE for risk assessment as well.⁷

The PCE, developed from 5 large cohorts, is based on hard atherosclerotic events: nonfatal myocardial infarction, death from coronary artery disease, and stroke. The ACC/AHA PCE is the only risk assessment tool developed using a significant percentage of patients who self-identify as Black.⁸ Alternatives to the ACC/AHA PCE include:

• Multi-ethnic Study of Atherosclerosis (MESA) 10-year ASCVD risk calculator, which incorporates the coronary artery calcium (CAC) score.
• Reynolds Risk Score, which incorporates high-sensitivity C-reactive protein measurement and a family history of premature ASCVD.⁹

How much does lifestyle modification actually matter?

The absolute impact of diet and exercise on lipid parameters is relatively modest. No studies have demonstrated a reduction in adverse cardiovascular outcomes with specific interventions regarding diet or activity.

• Diet. Nevertheless, ACC/AHA recommends that at-risk patients follow a dietary pattern that (1) emphasizes vegetables, fruits, and whole grains and (2) limits sweets, sugar-sweetened beverages, and red meat.

Saturated fat should constitute no more than 5% or 6% of total calories. In controlled-feeding trials,¹⁰ for every 1% of calories from saturated fat that are replaced with carbohydrate or monounsaturated or polyunsaturated fat, the LDL-C level was found to decline by as much as 1.8 mg/dL. Evidence is insufficient to assert that lowering dietary cholesterol reduces LDL-C.¹¹

• Activity. Trials of aerobic physical activity, compared with a more sedentary activity pattern, have demonstrated a reduction in the LDL-C level of as much as 6 mg/dL. All adult patients should be counseled to engage in aerobic physical activity of moderate or vigorous intensity—averaging ≥ 40 minutes per session, 3 or 4 sessions per week.¹¹

Primary prevention: Stratification by age

• 40 to 75 years. ACC/AHA recommends that you routinely assess traditional cardiovascular risk factors for these patients and calculate their 10-year risk for ASCVD using the PCE. Statin therapy as primary prevention is indicated for 3 major groups (TABLE 1).⁴ The US Preventive Services Task Force (USPSTF) recommends a 10-year ASCVD risk ≥ 10%, in conjunction with 1 or more additional CVD risk factors (dyslipidemia, diabetes, hypertension, smoking), as the threshold for initiating low- or moderate-intensity statin therapy in this age group.¹²

In adults at borderline risk (5% to < 7.5% 10-year ASCVD risk) or intermediate risk (≥ 7.5% to < 20% 10-year ASCVD risk), consider risk-enhancing factors to better inform your recommendation for preventive interventions. In these 2 groups, the presence of risk-enhancing factors might justify moderate-intensity statin therapy (TABLE 2⁴).

If your decision regarding preventive intervention remains uncertain, measuring CAC might further guide your discussion with the patient.⁴ When the CAC score is:

• 0 Agatston units and higher-risk conditions (eg, diabetes, family history of premature coronary artery disease, smoking) are absent, statin therapy can be withheld; reassess ASCVD risk in 5 to 10 years.
• 1-99 Agatston units, statin therapy can be started, especially for patients ≥ 55 years of age.
• ≥ 100 Agatston units or ≥ 75th percentile, statin therapy is indicated for all patients, regardless of additional risk factors.⁴

Because statins promote progression from unstable, inflammatory atherosclerotic plaque to more stable, calcified plaque, CAC scoring is not valid in patients already on statin therapy.¹³

In primary prevention, patients who have been classified as having low or intermediate risk, based on ASCVD risk scoring, with a CAC score of 0 Agatston units, have an annual all-cause mortality < 1%, regardless of age and gender. Patients classified as being at high risk, based on ASCVD risk scoring, with a CAC score of 0 Agatston units, have a significantly lower annual mortality than low- or intermediate-risk patients with a CAC score > 0 Agatston units.¹⁴

• 20 to 39 years. Focus on evaluation of lifetime ASCVD risk, rather than short-term (10-year) risk. Lifestyle modification is the primary intervention for younger patients; for those with moderate hypercholesterolemia (LDL-C, 160-189 mg/dL) and a family history of premature ASCVD, however, consider statin therapy. For patients with LDL-C ≥ 190 mg/dL, lifetime ASCVD risk is markedly increased, and high-intensity statin therapy is recommended, regardless of age. In this group, reassess ASCVD risk factors every 4 to 6 years.⁴
• > 75 years, without ASCVD. In this group, the benefit of statin therapy is less clear and might be lessened by an increased potential for adverse effects. A meta-analysis of 28 trials demonstrated that people ages > 75 years had a 24% relative reduction in major coronary events for every 38.7 mg/dL (1.0 mmol/L) reduction in LDL-C, which is comparable to the risk reduction seen in people ages 40 to 75 years.¹⁵

With increasing age, however, the relative reduction in major coronary events with statin therapy decreased,¹⁵ although other trials have not demonstrated age heterogeneity.¹⁶ Because people > 75 years of age have a significantly higher ASCVD event rate, a comparable relative rate reduction with statin therapy results in a larger absolute rate reduction (ARR) and, therefore, a smaller number needed to treat (NNT) to prevent an event, compared to the NNT in younger people.

Secondary prevention

ACC/AHA guidelines define clinical ASCVD as a history of:

• acute coronary syndrome
• myocardial infarction
• coronary or other arterial revascularization
• cerebrovascular event
• symptomatic peripheral artery disease, including aortic aneurysm.

High-intensity statin therapy is indicated for all patients ≤ 75 years who have clinical ASCVD. In patients > 75 years, consider a taper to moderate-intensity statin therapy. An upper age limit for seeing benefit from statin therapy in secondary prevention has not been identified.⁴

In high-risk patients, if LDL-C remains ≥ 70 mg/dL despite maximally tolerated statin therapy, ezetimibe (discussed in the next section) can be added. In very-high-risk patients, if LDL-C remains ≥ 70 mg/dL despite maximally tolerated statin therapy plus ezetimibe, a proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor (also discussed next) can be added. Always precede initiation of a PCSK9 inhibitor with a discussion of the net benefit, safety, and cost with the patient.⁴

Continue to: Options for lipid-lowering pharmacotherapy...

 

 

Options for lipid-lowering pharmacotherapy

• Statins (formally, hydroxymethylglutaryl-coenzyme A reductase inhibitors) offer the most predictable reduction in ASCVD risk of any lipid-lowering therapy. The evidence report that accompanied the 2016 USPSTF guidelines on statins for the prevention of cardiovascular disease (CVD) stated that low- or moderate-dosage statin therapy is associated with approximately a 30% relative risk reduction (RRR) in CVD events and CVD deaths and a 10% to 15% RRR in all-cause mortality.¹⁷

High-intensity statin therapy reduces LDL-C by ≥ 50%. Moderate-intensity statin therapy reduces LDL-C by 30% to 49% (TABLE 3).⁴

Statins are not without risk: A 2016 report¹⁸ estimated that treating 10,000 patients with a statin for 5 years would cause 1 case of rhabdomyolysis, 5 cases of myopathy, 75 new cases of diabetes, and 7 cases of hemorrhagic stroke. The same treatment would, however, avert approximately 1000 CVD events among patients with preexisting disease and approximately 500 CVD events among patients at elevated risk but without preexisting disease.¹⁸

• Ezetimibe, a selective cholesterol-absorption inhibitor, lowers LDL-C by 13% to 20% and typically is well tolerated. The use of ezetimibe in ASCVD risk reduction is supported by a single randomized controlled trial of more than 18,000 patients with recent acute coronary syndrome. Adding ezetimibe to simvastatin 40 mg resulted in a 2% absolute reduction in major adverse cardiovascular events over a median follow-up of 6 years (NNT = 50), compared to simvastatin alone.¹⁹ ACC/AHA guidelines recommend adding ezetimibe to maximally tolerated statin therapy in patients with clinical ASCVD who do not reach their goal LDL reduction with a statin alone. Ezetimibe also can be considered a statin alternative in patients who are statin intolerant.⁴
• PCSK9 inhibitors. When added to statin therapy, evolocumab and alirocumab—monoclonal antibodies that inhibit PCSK9—offer an incremental decrease in LDL-C of approximately 60%.^20-22 In a meta-analysis of 35 trials evaluating the incremental benefit of PCSK9 inhibitor therapy, a significant reduction in cardiovascular events, including myocardial infarction (ARR = 1.3%; NNT = 77), stroke (ARR = 0.4%; NNT = 250), and coronary revascularization (ARR = 1.6%; NNT = 63) was reported. No significant difference was observed in all-cause or cardiovascular mortality.^21,23
• Inclisiran, an injectable small-interfering RNA that inhibits PCSK9 synthesis, provides an incremental decrease in LDL-C of > 50% in patients already receiving statin therapy. Meta-analysis of 3 small cardiovascular outcomes trials revealed no significant difference in the rate of myocardial infarction, stroke, or cardiovascular mortality with inclisiran compared to placebo. Larger outcomes trials are underway and might offer additional insight into this agent’s role in ASCVD risk management.²⁴
• Omega-3 fatty acids. Multiple trials have demonstrated that adding omega-3 fatty acids to usual lipid-lowering therapy does not offer a consistent reduction in adverse cardiovascular outcomes, despite providing a significant reduction in TG levels. In a high-risk population with persistently elevated TG despite statin therapy, icosapent ethyl, a purified eicosapentaenoic acid ethyl ester, reduced major ASCVD outcomes by 25% over a median 4.9 years (ARR = 4.8%; NNT = 21), and cardiovascular death by 20% (ARR = 0.9%; NNT = 111), compared with a mineral oil placebo.²⁵ Subsequent trials, using a corn oil placebo, failed to duplicate these data²⁶—raising concern that the mineral oil comparator might have altered results of the eicosapentaenoic acid ethyl ester study.^27,28
• Bempedoic acid is a small-molecule inhibitor of ATP citrate lyase that increases LDL uptake by the liver. Pooled data from studies of bempedoic acid show, on average, a 15% reduction in TC, a 23% reduction in LDL-C, and a 6% increase in HDL-C, without a significant change in TG.²⁹ In statin-intolerant patients, bempedoicacid reduced major ASCVD outcomes by 13% over a median 40 months (ARR = 1.6%; NNT = 63), with no significant reduction in cardiovascular death.³⁰
• Niacin. Two large trials failed to demonstrate improvement in major cardiovascular events or other clinical benefit when niacin is added to moderate-intensity statin therapy, despite a significant increase in the HDL-C level (on average, 6 mg/dL) and a decrease in the LDL-C level (10-12 mg/dL)and TG (42 mg/dL).^31,32
• Fenofibrate lowers TG and increases HDL-C but does not consistently improve cardiovascular outcomes.³³ In a trial of patients with type 2 diabetes and persistent dyslipidemia (serum TG > 204 mg/dL; HDL-C< 34 mg/dL) despite statin therapy, adding fenofibrate reduced CVD outcomes by 4.9%—although this absolute difference did not reach statistical significance.³⁴

Neither niacin nor fenofibrate is considered useful for reducing ASCVD risk across broad populations.⁴

Follow-up to assess progress toward goals

Recheck the lipid profile 4 to 12 weeks after starting lipid-lowering therapy to verify adherence to medication and assess response. The primary goal is the percentage reduction in LDL-C based on ASCVD risk. An additional goal for very-high-risk patients is an LDL-C value ≤ 70 mg/dL. If the reduction in LDL-C is less than desired and adherence is assured, consider titrating the statin dosage or augmenting statin therapy with a nonstatin drug (eg, ezetimibe), or both.⁴ ●

CORRESPONDENCE

Jonathon M. Firnhaber, MD, MAEd, MBA, East Carolina University, Family Medicine Center, 101 Heart Drive, Greenville, NC 27834; [email protected]

An elevated serum level of cholesterol has been recognized as a risk factor for atherosclerotic cardiovascular disease (ASCVD) since the publication of the Framingham Study in 1961.¹ Although clinical outcomes related to ASCVD have improved in recent decades, ASCVD remains the leading cause of morbidity and mortality across the globe and remains, in the United States, the leading cause of death among most racial and ethnic groups. Much of this persistent disease burden can be attributed to inadequate control of ASCVD risk factors and suboptimal implementation of prevention strategies in the general population.²

The most recent (2019) iteration of the American College of Cardiology/American Heart Association (ACC/AHA) Guideline on the Primary Prevention of Cardiovascular Disease emphasizes a comprehensive, patient-centered, team-based approach to the management of ASCVD risk factors.² In this article, I review how, first, medication to reduce ASCVD risk should be considered only when a patient’s risk is sufficiently high and, second, shared decision-making and social determinants of health should, in all cases, guide and inform optimal implementation of treatment.²

Estimating risk for ASCVD by ascertaining LDL-C

• The Friedewald equation. Traditionally, low-density lipoprotein cholesterol (LDL-C) is estimated using the Friedewald equation^a applied to a fasting lipid profile. In patients who have a low level of LDL-C (< 70 mg/dL), however, the Friedewald equation becomes less accurate; in patients with hypertriglyceridemia (TG ≥ 400 mg/dL),estimation of LDL-C is invalid.
• The Martin–Hopkins equation offers a validated estimation of LDL-C when the LDL-C value is < 70 mg/dL.³ This equation—in which the fixed factor of 5 used in the Friedewald equation to estimate very low-density lipoprotein cholesterol is replaced by an adjustable factor that is based on the patient’s non-HDL-C (ie, TC–HDL-C) and TG values—is preferred by the ACC/AHA Task Force on Clinical Practice Guidelines in this clinical circumstance.⁴
• National Institutes of Health equation. This newer equation provides an accurate estimate of the LDL-C level in patients whose TG value is ≤ 800 mg/dL. The equation has not been fully validated for clinical use, however.⁵
• Direct measurement obviates the need for an equation to estimate LDL-C, but the test is not available in all health care settings.

For adults ≥ 20 years of age who are not receiving lipid-lowering therapy, a nonfasting lipid profile can be used to estimate ASCVD risk and document the baseline LDL-C level. If the TG level is ≥ 400 mg/dL, the test should be administered in the fasting state.⁴

• Apolipoprotein B. Alternatively, apolipoprotein B (apoB) can be measured. Because each LDL-C particle contains 1 apoB molecule, the apoB level describes the LDL-C level more accurately than a calculation of LDL-C. Many patients with type 2 diabetes and metabolic syndrome have a relatively low calculated LDL-C (thereby falsely reassuring the testing clinician) but have an elevated apoB level. An apoB level ≥ 130 mg/dL corresponds to an LDL-C level >160 mg/dL.⁴
• Calculation of non-HDL-C. Because the nonfasting state does not have a significant impact on a patient’s TC and HDL-C levels, the non-HDL-C level also can be calculated from the results of a nonfasting lipid profile.

Non-HDL-C and apoB are equivalent predictors of ASCVD risk. These 2 assessments might offer better risk estimation than other available tools in patients who have type 2 diabetes and metabolic syndrome.⁶

Continue to: Applying the estimate of 10-year ASCVD risk...

 

 

Applying the estimate of 10-year ASCVD risk

Your recommendation for preventive intervention, such as lipid-lowering therapy, should be based on the estimated 10-year risk for ASCVD. Although multiple validated risk assessment tools are available, ACC/AHA recommends the pooled cohort risk equations (PCE), introduced in the 2013 ACC/AHA cholesterol treatment guidelines. The Framingham Heart Study now recommends the ACC/AHA PCE for risk assessment as well.⁷

The PCE, developed from 5 large cohorts, is based on hard atherosclerotic events: nonfatal myocardial infarction, death from coronary artery disease, and stroke. The ACC/AHA PCE is the only risk assessment tool developed using a significant percentage of patients who self-identify as Black.⁸ Alternatives to the ACC/AHA PCE include:

• Multi-ethnic Study of Atherosclerosis (MESA) 10-year ASCVD risk calculator, which incorporates the coronary artery calcium (CAC) score.
• Reynolds Risk Score, which incorporates high-sensitivity C-reactive protein measurement and a family history of premature ASCVD.⁹

How much does lifestyle modification actually matter?

The absolute impact of diet and exercise on lipid parameters is relatively modest. No studies have demonstrated a reduction in adverse cardiovascular outcomes with specific interventions regarding diet or activity.

• Diet. Nevertheless, ACC/AHA recommends that at-risk patients follow a dietary pattern that (1) emphasizes vegetables, fruits, and whole grains and (2) limits sweets, sugar-sweetened beverages, and red meat.

Saturated fat should constitute no more than 5% or 6% of total calories. In controlled-feeding trials,¹⁰ for every 1% of calories from saturated fat that are replaced with carbohydrate or monounsaturated or polyunsaturated fat, the LDL-C level was found to decline by as much as 1.8 mg/dL. Evidence is insufficient to assert that lowering dietary cholesterol reduces LDL-C.¹¹

• Activity. Trials of aerobic physical activity, compared with a more sedentary activity pattern, have demonstrated a reduction in the LDL-C level of as much as 6 mg/dL. All adult patients should be counseled to engage in aerobic physical activity of moderate or vigorous intensity—averaging ≥ 40 minutes per session, 3 or 4 sessions per week.¹¹

Primary prevention: Stratification by age

• 40 to 75 years. ACC/AHA recommends that you routinely assess traditional cardiovascular risk factors for these patients and calculate their 10-year risk for ASCVD using the PCE. Statin therapy as primary prevention is indicated for 3 major groups (TABLE 1).⁴ The US Preventive Services Task Force (USPSTF) recommends a 10-year ASCVD risk ≥ 10%, in conjunction with 1 or more additional CVD risk factors (dyslipidemia, diabetes, hypertension, smoking), as the threshold for initiating low- or moderate-intensity statin therapy in this age group.¹²

In adults at borderline risk (5% to < 7.5% 10-year ASCVD risk) or intermediate risk (≥ 7.5% to < 20% 10-year ASCVD risk), consider risk-enhancing factors to better inform your recommendation for preventive interventions. In these 2 groups, the presence of risk-enhancing factors might justify moderate-intensity statin therapy (TABLE 2⁴).

If your decision regarding preventive intervention remains uncertain, measuring CAC might further guide your discussion with the patient.⁴ When the CAC score is:

• 0 Agatston units and higher-risk conditions (eg, diabetes, family history of premature coronary artery disease, smoking) are absent, statin therapy can be withheld; reassess ASCVD risk in 5 to 10 years.
• 1-99 Agatston units, statin therapy can be started, especially for patients ≥ 55 years of age.
• ≥ 100 Agatston units or ≥ 75th percentile, statin therapy is indicated for all patients, regardless of additional risk factors.⁴

Because statins promote progression from unstable, inflammatory atherosclerotic plaque to more stable, calcified plaque, CAC scoring is not valid in patients already on statin therapy.¹³

In primary prevention, patients who have been classified as having low or intermediate risk, based on ASCVD risk scoring, with a CAC score of 0 Agatston units, have an annual all-cause mortality < 1%, regardless of age and gender. Patients classified as being at high risk, based on ASCVD risk scoring, with a CAC score of 0 Agatston units, have a significantly lower annual mortality than low- or intermediate-risk patients with a CAC score > 0 Agatston units.¹⁴

• 20 to 39 years. Focus on evaluation of lifetime ASCVD risk, rather than short-term (10-year) risk. Lifestyle modification is the primary intervention for younger patients; for those with moderate hypercholesterolemia (LDL-C, 160-189 mg/dL) and a family history of premature ASCVD, however, consider statin therapy. For patients with LDL-C ≥ 190 mg/dL, lifetime ASCVD risk is markedly increased, and high-intensity statin therapy is recommended, regardless of age. In this group, reassess ASCVD risk factors every 4 to 6 years.⁴
• > 75 years, without ASCVD. In this group, the benefit of statin therapy is less clear and might be lessened by an increased potential for adverse effects. A meta-analysis of 28 trials demonstrated that people ages > 75 years had a 24% relative reduction in major coronary events for every 38.7 mg/dL (1.0 mmol/L) reduction in LDL-C, which is comparable to the risk reduction seen in people ages 40 to 75 years.¹⁵

With increasing age, however, the relative reduction in major coronary events with statin therapy decreased,¹⁵ although other trials have not demonstrated age heterogeneity.¹⁶ Because people > 75 years of age have a significantly higher ASCVD event rate, a comparable relative rate reduction with statin therapy results in a larger absolute rate reduction (ARR) and, therefore, a smaller number needed to treat (NNT) to prevent an event, compared to the NNT in younger people.

Secondary prevention

ACC/AHA guidelines define clinical ASCVD as a history of:

• acute coronary syndrome
• myocardial infarction
• coronary or other arterial revascularization
• cerebrovascular event
• symptomatic peripheral artery disease, including aortic aneurysm.

High-intensity statin therapy is indicated for all patients ≤ 75 years who have clinical ASCVD. In patients > 75 years, consider a taper to moderate-intensity statin therapy. An upper age limit for seeing benefit from statin therapy in secondary prevention has not been identified.⁴

In high-risk patients, if LDL-C remains ≥ 70 mg/dL despite maximally tolerated statin therapy, ezetimibe (discussed in the next section) can be added. In very-high-risk patients, if LDL-C remains ≥ 70 mg/dL despite maximally tolerated statin therapy plus ezetimibe, a proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor (also discussed next) can be added. Always precede initiation of a PCSK9 inhibitor with a discussion of the net benefit, safety, and cost with the patient.⁴

Continue to: Options for lipid-lowering pharmacotherapy...

 

 

Options for lipid-lowering pharmacotherapy

• Statins (formally, hydroxymethylglutaryl-coenzyme A reductase inhibitors) offer the most predictable reduction in ASCVD risk of any lipid-lowering therapy. The evidence report that accompanied the 2016 USPSTF guidelines on statins for the prevention of cardiovascular disease (CVD) stated that low- or moderate-dosage statin therapy is associated with approximately a 30% relative risk reduction (RRR) in CVD events and CVD deaths and a 10% to 15% RRR in all-cause mortality.¹⁷

High-intensity statin therapy reduces LDL-C by ≥ 50%. Moderate-intensity statin therapy reduces LDL-C by 30% to 49% (TABLE 3).⁴

Statins are not without risk: A 2016 report¹⁸ estimated that treating 10,000 patients with a statin for 5 years would cause 1 case of rhabdomyolysis, 5 cases of myopathy, 75 new cases of diabetes, and 7 cases of hemorrhagic stroke. The same treatment would, however, avert approximately 1000 CVD events among patients with preexisting disease and approximately 500 CVD events among patients at elevated risk but without preexisting disease.¹⁸

• Ezetimibe, a selective cholesterol-absorption inhibitor, lowers LDL-C by 13% to 20% and typically is well tolerated. The use of ezetimibe in ASCVD risk reduction is supported by a single randomized controlled trial of more than 18,000 patients with recent acute coronary syndrome. Adding ezetimibe to simvastatin 40 mg resulted in a 2% absolute reduction in major adverse cardiovascular events over a median follow-up of 6 years (NNT = 50), compared to simvastatin alone.¹⁹ ACC/AHA guidelines recommend adding ezetimibe to maximally tolerated statin therapy in patients with clinical ASCVD who do not reach their goal LDL reduction with a statin alone. Ezetimibe also can be considered a statin alternative in patients who are statin intolerant.⁴
• PCSK9 inhibitors. When added to statin therapy, evolocumab and alirocumab—monoclonal antibodies that inhibit PCSK9—offer an incremental decrease in LDL-C of approximately 60%.^20-22 In a meta-analysis of 35 trials evaluating the incremental benefit of PCSK9 inhibitor therapy, a significant reduction in cardiovascular events, including myocardial infarction (ARR = 1.3%; NNT = 77), stroke (ARR = 0.4%; NNT = 250), and coronary revascularization (ARR = 1.6%; NNT = 63) was reported. No significant difference was observed in all-cause or cardiovascular mortality.^21,23
• Inclisiran, an injectable small-interfering RNA that inhibits PCSK9 synthesis, provides an incremental decrease in LDL-C of > 50% in patients already receiving statin therapy. Meta-analysis of 3 small cardiovascular outcomes trials revealed no significant difference in the rate of myocardial infarction, stroke, or cardiovascular mortality with inclisiran compared to placebo. Larger outcomes trials are underway and might offer additional insight into this agent’s role in ASCVD risk management.²⁴
• Omega-3 fatty acids. Multiple trials have demonstrated that adding omega-3 fatty acids to usual lipid-lowering therapy does not offer a consistent reduction in adverse cardiovascular outcomes, despite providing a significant reduction in TG levels. In a high-risk population with persistently elevated TG despite statin therapy, icosapent ethyl, a purified eicosapentaenoic acid ethyl ester, reduced major ASCVD outcomes by 25% over a median 4.9 years (ARR = 4.8%; NNT = 21), and cardiovascular death by 20% (ARR = 0.9%; NNT = 111), compared with a mineral oil placebo.²⁵ Subsequent trials, using a corn oil placebo, failed to duplicate these data²⁶—raising concern that the mineral oil comparator might have altered results of the eicosapentaenoic acid ethyl ester study.^27,28
• Bempedoic acid is a small-molecule inhibitor of ATP citrate lyase that increases LDL uptake by the liver. Pooled data from studies of bempedoic acid show, on average, a 15% reduction in TC, a 23% reduction in LDL-C, and a 6% increase in HDL-C, without a significant change in TG.²⁹ In statin-intolerant patients, bempedoicacid reduced major ASCVD outcomes by 13% over a median 40 months (ARR = 1.6%; NNT = 63), with no significant reduction in cardiovascular death.³⁰
• Niacin. Two large trials failed to demonstrate improvement in major cardiovascular events or other clinical benefit when niacin is added to moderate-intensity statin therapy, despite a significant increase in the HDL-C level (on average, 6 mg/dL) and a decrease in the LDL-C level (10-12 mg/dL)and TG (42 mg/dL).^31,32
• Fenofibrate lowers TG and increases HDL-C but does not consistently improve cardiovascular outcomes.³³ In a trial of patients with type 2 diabetes and persistent dyslipidemia (serum TG > 204 mg/dL; HDL-C< 34 mg/dL) despite statin therapy, adding fenofibrate reduced CVD outcomes by 4.9%—although this absolute difference did not reach statistical significance.³⁴

Neither niacin nor fenofibrate is considered useful for reducing ASCVD risk across broad populations.⁴

Follow-up to assess progress toward goals

Recheck the lipid profile 4 to 12 weeks after starting lipid-lowering therapy to verify adherence to medication and assess response. The primary goal is the percentage reduction in LDL-C based on ASCVD risk. An additional goal for very-high-risk patients is an LDL-C value ≤ 70 mg/dL. If the reduction in LDL-C is less than desired and adherence is assured, consider titrating the statin dosage or augmenting statin therapy with a nonstatin drug (eg, ezetimibe), or both.⁴ ●

CORRESPONDENCE

Jonathon M. Firnhaber, MD, MAEd, MBA, East Carolina University, Family Medicine Center, 101 Heart Drive, Greenville, NC 27834; [email protected]

An elevated serum level of cholesterol has been recognized as a risk factor for atherosclerotic cardiovascular disease (ASCVD) since the publication of the Framingham Study in 1961.¹ Although clinical outcomes related to ASCVD have improved in recent decades, ASCVD remains the leading cause of morbidity and mortality across the globe and remains, in the United States, the leading cause of death among most racial and ethnic groups. Much of this persistent disease burden can be attributed to inadequate control of ASCVD risk factors and suboptimal implementation of prevention strategies in the general population.²

The most recent (2019) iteration of the American College of Cardiology/American Heart Association (ACC/AHA) Guideline on the Primary Prevention of Cardiovascular Disease emphasizes a comprehensive, patient-centered, team-based approach to the management of ASCVD risk factors.² In this article, I review how, first, medication to reduce ASCVD risk should be considered only when a patient’s risk is sufficiently high and, second, shared decision-making and social determinants of health should, in all cases, guide and inform optimal implementation of treatment.²

Estimating risk for ASCVD by ascertaining LDL-C

• The Friedewald equation. Traditionally, low-density lipoprotein cholesterol (LDL-C) is estimated using the Friedewald equation^a applied to a fasting lipid profile. In patients who have a low level of LDL-C (< 70 mg/dL), however, the Friedewald equation becomes less accurate; in patients with hypertriglyceridemia (TG ≥ 400 mg/dL),estimation of LDL-C is invalid.
• The Martin–Hopkins equation offers a validated estimation of LDL-C when the LDL-C value is < 70 mg/dL.³ This equation—in which the fixed factor of 5 used in the Friedewald equation to estimate very low-density lipoprotein cholesterol is replaced by an adjustable factor that is based on the patient’s non-HDL-C (ie, TC–HDL-C) and TG values—is preferred by the ACC/AHA Task Force on Clinical Practice Guidelines in this clinical circumstance.⁴
• National Institutes of Health equation. This newer equation provides an accurate estimate of the LDL-C level in patients whose TG value is ≤ 800 mg/dL. The equation has not been fully validated for clinical use, however.⁵
• Direct measurement obviates the need for an equation to estimate LDL-C, but the test is not available in all health care settings.

For adults ≥ 20 years of age who are not receiving lipid-lowering therapy, a nonfasting lipid profile can be used to estimate ASCVD risk and document the baseline LDL-C level. If the TG level is ≥ 400 mg/dL, the test should be administered in the fasting state.⁴

• Apolipoprotein B. Alternatively, apolipoprotein B (apoB) can be measured. Because each LDL-C particle contains 1 apoB molecule, the apoB level describes the LDL-C level more accurately than a calculation of LDL-C. Many patients with type 2 diabetes and metabolic syndrome have a relatively low calculated LDL-C (thereby falsely reassuring the testing clinician) but have an elevated apoB level. An apoB level ≥ 130 mg/dL corresponds to an LDL-C level >160 mg/dL.⁴
• Calculation of non-HDL-C. Because the nonfasting state does not have a significant impact on a patient’s TC and HDL-C levels, the non-HDL-C level also can be calculated from the results of a nonfasting lipid profile.

Non-HDL-C and apoB are equivalent predictors of ASCVD risk. These 2 assessments might offer better risk estimation than other available tools in patients who have type 2 diabetes and metabolic syndrome.⁶

Continue to: Applying the estimate of 10-year ASCVD risk...

 

 

Applying the estimate of 10-year ASCVD risk

Your recommendation for preventive intervention, such as lipid-lowering therapy, should be based on the estimated 10-year risk for ASCVD. Although multiple validated risk assessment tools are available, ACC/AHA recommends the pooled cohort risk equations (PCE), introduced in the 2013 ACC/AHA cholesterol treatment guidelines. The Framingham Heart Study now recommends the ACC/AHA PCE for risk assessment as well.⁷

The PCE, developed from 5 large cohorts, is based on hard atherosclerotic events: nonfatal myocardial infarction, death from coronary artery disease, and stroke. The ACC/AHA PCE is the only risk assessment tool developed using a significant percentage of patients who self-identify as Black.⁸ Alternatives to the ACC/AHA PCE include:

• Multi-ethnic Study of Atherosclerosis (MESA) 10-year ASCVD risk calculator, which incorporates the coronary artery calcium (CAC) score.
• Reynolds Risk Score, which incorporates high-sensitivity C-reactive protein measurement and a family history of premature ASCVD.⁹

How much does lifestyle modification actually matter?

The absolute impact of diet and exercise on lipid parameters is relatively modest. No studies have demonstrated a reduction in adverse cardiovascular outcomes with specific interventions regarding diet or activity.

• Diet. Nevertheless, ACC/AHA recommends that at-risk patients follow a dietary pattern that (1) emphasizes vegetables, fruits, and whole grains and (2) limits sweets, sugar-sweetened beverages, and red meat.

Saturated fat should constitute no more than 5% or 6% of total calories. In controlled-feeding trials,¹⁰ for every 1% of calories from saturated fat that are replaced with carbohydrate or monounsaturated or polyunsaturated fat, the LDL-C level was found to decline by as much as 1.8 mg/dL. Evidence is insufficient to assert that lowering dietary cholesterol reduces LDL-C.¹¹

• Activity. Trials of aerobic physical activity, compared with a more sedentary activity pattern, have demonstrated a reduction in the LDL-C level of as much as 6 mg/dL. All adult patients should be counseled to engage in aerobic physical activity of moderate or vigorous intensity—averaging ≥ 40 minutes per session, 3 or 4 sessions per week.¹¹

Primary prevention: Stratification by age

• 40 to 75 years. ACC/AHA recommends that you routinely assess traditional cardiovascular risk factors for these patients and calculate their 10-year risk for ASCVD using the PCE. Statin therapy as primary prevention is indicated for 3 major groups (TABLE 1).⁴ The US Preventive Services Task Force (USPSTF) recommends a 10-year ASCVD risk ≥ 10%, in conjunction with 1 or more additional CVD risk factors (dyslipidemia, diabetes, hypertension, smoking), as the threshold for initiating low- or moderate-intensity statin therapy in this age group.¹²

In adults at borderline risk (5% to < 7.5% 10-year ASCVD risk) or intermediate risk (≥ 7.5% to < 20% 10-year ASCVD risk), consider risk-enhancing factors to better inform your recommendation for preventive interventions. In these 2 groups, the presence of risk-enhancing factors might justify moderate-intensity statin therapy (TABLE 2⁴).

If your decision regarding preventive intervention remains uncertain, measuring CAC might further guide your discussion with the patient.⁴ When the CAC score is:

• 0 Agatston units and higher-risk conditions (eg, diabetes, family history of premature coronary artery disease, smoking) are absent, statin therapy can be withheld; reassess ASCVD risk in 5 to 10 years.
• 1-99 Agatston units, statin therapy can be started, especially for patients ≥ 55 years of age.
• ≥ 100 Agatston units or ≥ 75th percentile, statin therapy is indicated for all patients, regardless of additional risk factors.⁴

Because statins promote progression from unstable, inflammatory atherosclerotic plaque to more stable, calcified plaque, CAC scoring is not valid in patients already on statin therapy.¹³

In primary prevention, patients who have been classified as having low or intermediate risk, based on ASCVD risk scoring, with a CAC score of 0 Agatston units, have an annual all-cause mortality < 1%, regardless of age and gender. Patients classified as being at high risk, based on ASCVD risk scoring, with a CAC score of 0 Agatston units, have a significantly lower annual mortality than low- or intermediate-risk patients with a CAC score > 0 Agatston units.¹⁴

• 20 to 39 years. Focus on evaluation of lifetime ASCVD risk, rather than short-term (10-year) risk. Lifestyle modification is the primary intervention for younger patients; for those with moderate hypercholesterolemia (LDL-C, 160-189 mg/dL) and a family history of premature ASCVD, however, consider statin therapy. For patients with LDL-C ≥ 190 mg/dL, lifetime ASCVD risk is markedly increased, and high-intensity statin therapy is recommended, regardless of age. In this group, reassess ASCVD risk factors every 4 to 6 years.⁴
• > 75 years, without ASCVD. In this group, the benefit of statin therapy is less clear and might be lessened by an increased potential for adverse effects. A meta-analysis of 28 trials demonstrated that people ages > 75 years had a 24% relative reduction in major coronary events for every 38.7 mg/dL (1.0 mmol/L) reduction in LDL-C, which is comparable to the risk reduction seen in people ages 40 to 75 years.¹⁵

With increasing age, however, the relative reduction in major coronary events with statin therapy decreased,¹⁵ although other trials have not demonstrated age heterogeneity.¹⁶ Because people > 75 years of age have a significantly higher ASCVD event rate, a comparable relative rate reduction with statin therapy results in a larger absolute rate reduction (ARR) and, therefore, a smaller number needed to treat (NNT) to prevent an event, compared to the NNT in younger people.

Secondary prevention

ACC/AHA guidelines define clinical ASCVD as a history of:

• acute coronary syndrome
• myocardial infarction
• coronary or other arterial revascularization
• cerebrovascular event
• symptomatic peripheral artery disease, including aortic aneurysm.

High-intensity statin therapy is indicated for all patients ≤ 75 years who have clinical ASCVD. In patients > 75 years, consider a taper to moderate-intensity statin therapy. An upper age limit for seeing benefit from statin therapy in secondary prevention has not been identified.⁴

In high-risk patients, if LDL-C remains ≥ 70 mg/dL despite maximally tolerated statin therapy, ezetimibe (discussed in the next section) can be added. In very-high-risk patients, if LDL-C remains ≥ 70 mg/dL despite maximally tolerated statin therapy plus ezetimibe, a proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor (also discussed next) can be added. Always precede initiation of a PCSK9 inhibitor with a discussion of the net benefit, safety, and cost with the patient.⁴

Continue to: Options for lipid-lowering pharmacotherapy...

 

 

Options for lipid-lowering pharmacotherapy

• Statins (formally, hydroxymethylglutaryl-coenzyme A reductase inhibitors) offer the most predictable reduction in ASCVD risk of any lipid-lowering therapy. The evidence report that accompanied the 2016 USPSTF guidelines on statins for the prevention of cardiovascular disease (CVD) stated that low- or moderate-dosage statin therapy is associated with approximately a 30% relative risk reduction (RRR) in CVD events and CVD deaths and a 10% to 15% RRR in all-cause mortality.¹⁷

High-intensity statin therapy reduces LDL-C by ≥ 50%. Moderate-intensity statin therapy reduces LDL-C by 30% to 49% (TABLE 3).⁴

Statins are not without risk: A 2016 report¹⁸ estimated that treating 10,000 patients with a statin for 5 years would cause 1 case of rhabdomyolysis, 5 cases of myopathy, 75 new cases of diabetes, and 7 cases of hemorrhagic stroke. The same treatment would, however, avert approximately 1000 CVD events among patients with preexisting disease and approximately 500 CVD events among patients at elevated risk but without preexisting disease.¹⁸

• Ezetimibe, a selective cholesterol-absorption inhibitor, lowers LDL-C by 13% to 20% and typically is well tolerated. The use of ezetimibe in ASCVD risk reduction is supported by a single randomized controlled trial of more than 18,000 patients with recent acute coronary syndrome. Adding ezetimibe to simvastatin 40 mg resulted in a 2% absolute reduction in major adverse cardiovascular events over a median follow-up of 6 years (NNT = 50), compared to simvastatin alone.¹⁹ ACC/AHA guidelines recommend adding ezetimibe to maximally tolerated statin therapy in patients with clinical ASCVD who do not reach their goal LDL reduction with a statin alone. Ezetimibe also can be considered a statin alternative in patients who are statin intolerant.⁴
• PCSK9 inhibitors. When added to statin therapy, evolocumab and alirocumab—monoclonal antibodies that inhibit PCSK9—offer an incremental decrease in LDL-C of approximately 60%.^20-22 In a meta-analysis of 35 trials evaluating the incremental benefit of PCSK9 inhibitor therapy, a significant reduction in cardiovascular events, including myocardial infarction (ARR = 1.3%; NNT = 77), stroke (ARR = 0.4%; NNT = 250), and coronary revascularization (ARR = 1.6%; NNT = 63) was reported. No significant difference was observed in all-cause or cardiovascular mortality.^21,23
• Inclisiran, an injectable small-interfering RNA that inhibits PCSK9 synthesis, provides an incremental decrease in LDL-C of > 50% in patients already receiving statin therapy. Meta-analysis of 3 small cardiovascular outcomes trials revealed no significant difference in the rate of myocardial infarction, stroke, or cardiovascular mortality with inclisiran compared to placebo. Larger outcomes trials are underway and might offer additional insight into this agent’s role in ASCVD risk management.²⁴
• Omega-3 fatty acids. Multiple trials have demonstrated that adding omega-3 fatty acids to usual lipid-lowering therapy does not offer a consistent reduction in adverse cardiovascular outcomes, despite providing a significant reduction in TG levels. In a high-risk population with persistently elevated TG despite statin therapy, icosapent ethyl, a purified eicosapentaenoic acid ethyl ester, reduced major ASCVD outcomes by 25% over a median 4.9 years (ARR = 4.8%; NNT = 21), and cardiovascular death by 20% (ARR = 0.9%; NNT = 111), compared with a mineral oil placebo.²⁵ Subsequent trials, using a corn oil placebo, failed to duplicate these data²⁶—raising concern that the mineral oil comparator might have altered results of the eicosapentaenoic acid ethyl ester study.^27,28
• Bempedoic acid is a small-molecule inhibitor of ATP citrate lyase that increases LDL uptake by the liver. Pooled data from studies of bempedoic acid show, on average, a 15% reduction in TC, a 23% reduction in LDL-C, and a 6% increase in HDL-C, without a significant change in TG.²⁹ In statin-intolerant patients, bempedoicacid reduced major ASCVD outcomes by 13% over a median 40 months (ARR = 1.6%; NNT = 63), with no significant reduction in cardiovascular death.³⁰
• Niacin. Two large trials failed to demonstrate improvement in major cardiovascular events or other clinical benefit when niacin is added to moderate-intensity statin therapy, despite a significant increase in the HDL-C level (on average, 6 mg/dL) and a decrease in the LDL-C level (10-12 mg/dL)and TG (42 mg/dL).^31,32
• Fenofibrate lowers TG and increases HDL-C but does not consistently improve cardiovascular outcomes.³³ In a trial of patients with type 2 diabetes and persistent dyslipidemia (serum TG > 204 mg/dL; HDL-C< 34 mg/dL) despite statin therapy, adding fenofibrate reduced CVD outcomes by 4.9%—although this absolute difference did not reach statistical significance.³⁴

Neither niacin nor fenofibrate is considered useful for reducing ASCVD risk across broad populations.⁴

Follow-up to assess progress toward goals

Recheck the lipid profile 4 to 12 weeks after starting lipid-lowering therapy to verify adherence to medication and assess response. The primary goal is the percentage reduction in LDL-C based on ASCVD risk. An additional goal for very-high-risk patients is an LDL-C value ≤ 70 mg/dL. If the reduction in LDL-C is less than desired and adherence is assured, consider titrating the statin dosage or augmenting statin therapy with a nonstatin drug (eg, ezetimibe), or both.⁴ ●

CORRESPONDENCE

Jonathon M. Firnhaber, MD, MAEd, MBA, East Carolina University, Family Medicine Center, 101 Heart Drive, Greenville, NC 27834; [email protected]

Whole exome sequencing’s role in diagnosing genetic causes of FGR with and without associated anomalies

Mone F, Mellis R, Gabriel H, et al. Should we offer prenatal exome sequencing for intrauterine growth restriction or short long bones? A systematic review and meta-analysis. Am J Obstet Gynecol. Published online October 7, 2022. doi:10.1016/j.ajog.2022.09.045

Multiple factors can play a role in FGR, including inherent maternal, placental, or fetal factors; the environment; and/or nutrition. However, prenatal diagnosis is an important consideration when exploring the underlying etiology for a growth-restricted fetus, especially in severe or early-onset cases. Many genetic conditions do not result in structural anomalies but can disrupt overall growth. Additionally, phenotyping in the prenatal period is limited and can miss more subtle physical differences that could point to a genetic cause. 

When compared with karyotype, chromosomal microarray (CMA) has been shown to increase the diagnostic yield in cases of isolated early FGR by 5%,^1,2 and the incidence of chromosomal abnormalities has been reported to be as high as 19% in this population. Let’s explore the data on exome sequencing for prenatal diagnosis in cases of isolated FGR. 

Meta-analysis details

In this meta-analysis, the authors reviewed 19 cohort studies or case series that investigated the yield of prenatal sequencing in fetuses with intrauterine growth restriction (IUGR) or short long bones, both in association with and without additional anomalies. All cases had nondiagnostic cytogenetic results. Fetal DNA in most cases was obtained through amniocentesis. Variants classified as likely pathogenic and pathogenic were considered diagnostic. The authors then calculated the incremental yield of prenatal sequencing over cytogenetic studies as a pooled value, comparing the following groups:

• isolated FGR
• growth restriction with associated anomalies
• isolated short long bones
• short long bones with additional skeletal features.  

Study outcomes 

The total number of cases were as follows: isolated IUGR (n = 71), IUGR associated with additional anomalies (n = 45), isolated short long bones (n = 84), and short long bones associated with additional skeletal findings (n = 252). Causative pathogenic or likely pathogenic variants were identified in 224 (50%) cases. Apparent incremental yields with prenatal sequencing were as follows for the 4 groups (as illustrated in the FIGURE):

• 4% in isolated IUGR (95% confidence interval [CI], -5%–12%)
• 30% in IUGR with additional anomalies (95% CI, 13%–47%)
• 48% in isolated short long bones (95% CI, 26%–70%)
• 68% in short long bones with additional skeletal changes (95% CI, 58%–77%).

Overall, the authors concluded that prenatal sequencing does not improve prenatal diagnosis in cases of isolated IUGR. The majority of these cases were thought to be related to placental insufficiency.

Strengths and limitations 

The main limitation of this study with regard to our discussion is the small study populationof isolated growth restriction. The authors indicate that the number of cases of isolated IUGR were too small to draw firm conclusions. Another limitation was the heterogeneity of the isolated FGR population, which was not limited to severe or early-onset cases. However, the authors did demonstrate that growth restriction in association with fetal anomalies has very high genetic yield rates with prenatal sequencing. 

Continue to: Can whole exome sequencing diagnose genetic causes in cases of severe isolated FGR?...

 

 

Can whole exome sequencing diagnose genetic causes in cases of severe isolated FGR? 

Zhou H, Fu F, Wang Y, et al. Genetic causes of isolated and severe fetal growth restriction in normal chromosomal microarray analysis. Int J Gynaecol Obstet. Published online December 10, 2022. doi:10.1002/ijgo.14620

Severe FGR is diagnosed based on an estimated fetal weight (EFW) or abdominal circumference (AC) below the third percentile. As we discussed in the above study by Mone and colleagues, it does not appear that prenatal sequencing significantly improves the diagnostic yield in all isolated FGR cases. However, this has not been previously explored in isolated severe FGR or cases of early-onset FGR (<32 weeks’ gestation). We know that several monogenic conditions are associated with severe and early-onset isolated fetal growth impairment, including but not limited to Cornelia de Lange syndrome, Smith-Lemli-Opitz syndrome, and Meier-Gorlin syndrome. Often, these syndromes can present in the prenatal period without other phenotypic findings. Therefore, this study explored the possibility that prenatal sequencing plays an important role for severe cases of FGR with nondiagnostic CMA and/or karyotype. 

Retrospective study details 

Zhou and colleagues retrospectively analyzed 51 cases of severe (EFW or AC below the third percentile) isolated FGR with negative CMA who underwent trio whole exome sequencing, which includes submitting fetal cells as well as both parental samples for testing. Patients with abnormal toxoplasmosis, rubella, cytomegalovirus, and herpes simplex virus (TORCH) tests; structural anomalies; and multiple gestation were excluded from the analysis. As in the study by Mone et al, variants classified as likely pathogenic and pathogenic were categorized as diagnostic. 

Results

Eight of 51 cases (15.7%) with severe isolated FGR had diagnostic findings on trio whole exome sequencing as shown in the TABLE. Another 8 cases (15.7%) were found to have variants of unknown significance, of which 2 were later determined to be novel pathogenic variants. Genetic conditions uncovered in this cohort include Cornelia de Lange syndrome, pyruvate dehydrogenase deficiency, Dent disease, trichohepaticenteric syndrome, achondroplasia, osteogenesis imperfecta, Pendred syndrome, and both autosomal dominant type 3A and autosomal recessive type 1A deafness. All 10 cases with diagnostic whole exome sequencing or identified novel pathogenic variants were affected by early-onset FGR (<32 weeks’ gestation). Of these 10 cases, 7 patients underwent pregnancy termination.

To summarize, a total of 10 cases (19.6%) of severe isolated early-onset FGR with negative cytogenetic studies were subsequently diagnosed with an underlying genetic condition using prenatal trio whole exome sequencing. 

Strengths and limitations 

This study is retrospective and has a small sample size (n = 51) that was mostly limited to early-onset isolated severe FGR. However, the diagnostic yield (19.6%) of whole exome sequencing after negative CMA testing was noteworthy and shows that monogenic conditions are an important consideration in the evaluation of severe early-onset FGR, even in the absence of structural abnormalities. 

Could epigenetic mechanisms of placental dysregulation explain low birthweight and future cardiometabolic disease?  

Tekola-Ayele F, Zeng X, Chatterjee S, et al. Placental multi-omics integration identifies candidate functional genes for birthweight. Nat Commun. 2022;13:2384.

FGR has been linked to greater mortality in childhood and increased risk for cardiometabolic disease in adulthood. While genomewide associations studies (GWAS) have defined areas of interest linking genetic variants to low birthweight, their relationship to epigenetic changes in the placenta as well as biologic and functional mechanisms are not yet well understood.  

Multiomics used to identify candidate functional genes for birthweight 

This study analyzed the methylation and gene expression patterns of 291 placental samples, integrating findings into pathways of previously defined GWAS variants. Patient samples were obtained from participants in the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Fetal Growth Studies–Singleton cohort. The cohort is ethnically diverse, with 97 Hispanic, 74 White, 71 Black, and 49 Asian participants. Of 286 single nucleotide polymorphisms (SNPs) found to be associated with birthweight, 273 were analyzed as part of the authors’ data set. These were found to have 7,901 unique protein-coding mRNAs (expression quantitative trait loci [eQTL]) and more than 100,000 nearby (within 1 Mb) CpG islands thought to be involved in changes in DNA methylation (methylation quantitative trait loci [mQTL]). Each functionally connected GWAS-eQTL-mQTL association is referred to as a triplet.

The next arm of the study investigatedthe connections and pathways within each triplet. Three possible scenarios were explored for birthweight GWAS SNPs using a causal interference test (CIT):

1. the SNP alters placental DNA methylation, which then influences gene expression
2. the SNP first alters placental DNA expression, which then influences methylation
3. the SNP influences placental DNA expression and methylation independently, with no notable crossover between their pathways.

Triplets were investigated using the Mendelian randomization (MR) Steiger directionality test to validate the directionality of the pathways found by CIT. Lastly, the possibility of linkage disequilibrium was also studied using the moloc test. 

Results

Using CIT, a causal relationship was predicted in 88 of 197 triplets, in which 84 (95.5%) indicated DNA methylation influences gene expression, and 4 (4.5%) indicated gene expression influences DNA methylation. The authors also used the MR Steiger test to investigate triplets to identify possible causal pathways. Using the MR Steiger test, only 3 of 45 (7%) triplets were found to have independent gene expression and methylation pathways. Thirty-eight of 45 (84%) triplets indicated that gene expression influences DNA methylation, and 7 (15%)triplets demonstrated that DNA methylation influences gene expression. Consistent predictions between CIT and the MR Steiger test revealed 3 triplets in which DNA methylation influences gene expression for the following genes: WNT3A, CTDNEP1, and RANBP2. Additionally, a strong colocalization signal was found among birthweight, DNA methylation, and gene expression for the following genes: PLEKHA1, FES, PRMT7, and CTDNEP1. Gene set enrichment analysis was performed as well and found that low birthweight is associated in substantial upregulation of genes associated with oxidative stress, immune response, adipogenesis, myogenesis, and the production of pancreatic ß cells.  

Study strengths and limitations

The study is one of the first to identify regulatory targets for placental DNA methylation and gene expression in previously identified GWAS loci associated with low birthweight. For example, DNA methylation was found to influence gene expression of WNT3A, CTDNEP1, and RANBP2, which have previously been shown in animal studies to impact the vascularization and development of the placenta, embryogenesis, and fetal growth. The study also identified 4 genes (PLEKHA1, FES, PRMT7, and CTDNEP1) thought to have direct regulatory influence on placental DNA methylation and gene expression.

A limitation of the study is that it could not distinguish between whether the epigenetic changes we outlined have a maternal or fetal origin. Another limitation is that tissue used by the authors for analysis was a small placental biopsy, which does not accurately reflect the genetic heterogeneity of the placenta. Finally, this study does not establish causality between the identified epigenetic pathways and low birthweight. ●

Whole exome sequencing’s role in diagnosing genetic causes of FGR with and without associated anomalies

Mone F, Mellis R, Gabriel H, et al. Should we offer prenatal exome sequencing for intrauterine growth restriction or short long bones? A systematic review and meta-analysis. Am J Obstet Gynecol. Published online October 7, 2022. doi:10.1016/j.ajog.2022.09.045

Multiple factors can play a role in FGR, including inherent maternal, placental, or fetal factors; the environment; and/or nutrition. However, prenatal diagnosis is an important consideration when exploring the underlying etiology for a growth-restricted fetus, especially in severe or early-onset cases. Many genetic conditions do not result in structural anomalies but can disrupt overall growth. Additionally, phenotyping in the prenatal period is limited and can miss more subtle physical differences that could point to a genetic cause. 

When compared with karyotype, chromosomal microarray (CMA) has been shown to increase the diagnostic yield in cases of isolated early FGR by 5%,^1,2 and the incidence of chromosomal abnormalities has been reported to be as high as 19% in this population. Let’s explore the data on exome sequencing for prenatal diagnosis in cases of isolated FGR. 

Meta-analysis details

In this meta-analysis, the authors reviewed 19 cohort studies or case series that investigated the yield of prenatal sequencing in fetuses with intrauterine growth restriction (IUGR) or short long bones, both in association with and without additional anomalies. All cases had nondiagnostic cytogenetic results. Fetal DNA in most cases was obtained through amniocentesis. Variants classified as likely pathogenic and pathogenic were considered diagnostic. The authors then calculated the incremental yield of prenatal sequencing over cytogenetic studies as a pooled value, comparing the following groups:

• isolated FGR
• growth restriction with associated anomalies
• isolated short long bones
• short long bones with additional skeletal features.  

Study outcomes 

The total number of cases were as follows: isolated IUGR (n = 71), IUGR associated with additional anomalies (n = 45), isolated short long bones (n = 84), and short long bones associated with additional skeletal findings (n = 252). Causative pathogenic or likely pathogenic variants were identified in 224 (50%) cases. Apparent incremental yields with prenatal sequencing were as follows for the 4 groups (as illustrated in the FIGURE):

• 4% in isolated IUGR (95% confidence interval [CI], -5%–12%)
• 30% in IUGR with additional anomalies (95% CI, 13%–47%)
• 48% in isolated short long bones (95% CI, 26%–70%)
• 68% in short long bones with additional skeletal changes (95% CI, 58%–77%).

Overall, the authors concluded that prenatal sequencing does not improve prenatal diagnosis in cases of isolated IUGR. The majority of these cases were thought to be related to placental insufficiency.

Strengths and limitations 

The main limitation of this study with regard to our discussion is the small study populationof isolated growth restriction. The authors indicate that the number of cases of isolated IUGR were too small to draw firm conclusions. Another limitation was the heterogeneity of the isolated FGR population, which was not limited to severe or early-onset cases. However, the authors did demonstrate that growth restriction in association with fetal anomalies has very high genetic yield rates with prenatal sequencing. 

Continue to: Can whole exome sequencing diagnose genetic causes in cases of severe isolated FGR?...

 

 

Can whole exome sequencing diagnose genetic causes in cases of severe isolated FGR? 

Zhou H, Fu F, Wang Y, et al. Genetic causes of isolated and severe fetal growth restriction in normal chromosomal microarray analysis. Int J Gynaecol Obstet. Published online December 10, 2022. doi:10.1002/ijgo.14620

Severe FGR is diagnosed based on an estimated fetal weight (EFW) or abdominal circumference (AC) below the third percentile. As we discussed in the above study by Mone and colleagues, it does not appear that prenatal sequencing significantly improves the diagnostic yield in all isolated FGR cases. However, this has not been previously explored in isolated severe FGR or cases of early-onset FGR (<32 weeks’ gestation). We know that several monogenic conditions are associated with severe and early-onset isolated fetal growth impairment, including but not limited to Cornelia de Lange syndrome, Smith-Lemli-Opitz syndrome, and Meier-Gorlin syndrome. Often, these syndromes can present in the prenatal period without other phenotypic findings. Therefore, this study explored the possibility that prenatal sequencing plays an important role for severe cases of FGR with nondiagnostic CMA and/or karyotype. 

Retrospective study details 

Zhou and colleagues retrospectively analyzed 51 cases of severe (EFW or AC below the third percentile) isolated FGR with negative CMA who underwent trio whole exome sequencing, which includes submitting fetal cells as well as both parental samples for testing. Patients with abnormal toxoplasmosis, rubella, cytomegalovirus, and herpes simplex virus (TORCH) tests; structural anomalies; and multiple gestation were excluded from the analysis. As in the study by Mone et al, variants classified as likely pathogenic and pathogenic were categorized as diagnostic. 

Results

Eight of 51 cases (15.7%) with severe isolated FGR had diagnostic findings on trio whole exome sequencing as shown in the TABLE. Another 8 cases (15.7%) were found to have variants of unknown significance, of which 2 were later determined to be novel pathogenic variants. Genetic conditions uncovered in this cohort include Cornelia de Lange syndrome, pyruvate dehydrogenase deficiency, Dent disease, trichohepaticenteric syndrome, achondroplasia, osteogenesis imperfecta, Pendred syndrome, and both autosomal dominant type 3A and autosomal recessive type 1A deafness. All 10 cases with diagnostic whole exome sequencing or identified novel pathogenic variants were affected by early-onset FGR (<32 weeks’ gestation). Of these 10 cases, 7 patients underwent pregnancy termination.

To summarize, a total of 10 cases (19.6%) of severe isolated early-onset FGR with negative cytogenetic studies were subsequently diagnosed with an underlying genetic condition using prenatal trio whole exome sequencing. 

Strengths and limitations 

This study is retrospective and has a small sample size (n = 51) that was mostly limited to early-onset isolated severe FGR. However, the diagnostic yield (19.6%) of whole exome sequencing after negative CMA testing was noteworthy and shows that monogenic conditions are an important consideration in the evaluation of severe early-onset FGR, even in the absence of structural abnormalities. 

Could epigenetic mechanisms of placental dysregulation explain low birthweight and future cardiometabolic disease?  

Tekola-Ayele F, Zeng X, Chatterjee S, et al. Placental multi-omics integration identifies candidate functional genes for birthweight. Nat Commun. 2022;13:2384.

FGR has been linked to greater mortality in childhood and increased risk for cardiometabolic disease in adulthood. While genomewide associations studies (GWAS) have defined areas of interest linking genetic variants to low birthweight, their relationship to epigenetic changes in the placenta as well as biologic and functional mechanisms are not yet well understood.  

Multiomics used to identify candidate functional genes for birthweight 

This study analyzed the methylation and gene expression patterns of 291 placental samples, integrating findings into pathways of previously defined GWAS variants. Patient samples were obtained from participants in the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Fetal Growth Studies–Singleton cohort. The cohort is ethnically diverse, with 97 Hispanic, 74 White, 71 Black, and 49 Asian participants. Of 286 single nucleotide polymorphisms (SNPs) found to be associated with birthweight, 273 were analyzed as part of the authors’ data set. These were found to have 7,901 unique protein-coding mRNAs (expression quantitative trait loci [eQTL]) and more than 100,000 nearby (within 1 Mb) CpG islands thought to be involved in changes in DNA methylation (methylation quantitative trait loci [mQTL]). Each functionally connected GWAS-eQTL-mQTL association is referred to as a triplet.

The next arm of the study investigatedthe connections and pathways within each triplet. Three possible scenarios were explored for birthweight GWAS SNPs using a causal interference test (CIT):

1. the SNP alters placental DNA methylation, which then influences gene expression
2. the SNP first alters placental DNA expression, which then influences methylation
3. the SNP influences placental DNA expression and methylation independently, with no notable crossover between their pathways.

Triplets were investigated using the Mendelian randomization (MR) Steiger directionality test to validate the directionality of the pathways found by CIT. Lastly, the possibility of linkage disequilibrium was also studied using the moloc test. 

Results

Using CIT, a causal relationship was predicted in 88 of 197 triplets, in which 84 (95.5%) indicated DNA methylation influences gene expression, and 4 (4.5%) indicated gene expression influences DNA methylation. The authors also used the MR Steiger test to investigate triplets to identify possible causal pathways. Using the MR Steiger test, only 3 of 45 (7%) triplets were found to have independent gene expression and methylation pathways. Thirty-eight of 45 (84%) triplets indicated that gene expression influences DNA methylation, and 7 (15%)triplets demonstrated that DNA methylation influences gene expression. Consistent predictions between CIT and the MR Steiger test revealed 3 triplets in which DNA methylation influences gene expression for the following genes: WNT3A, CTDNEP1, and RANBP2. Additionally, a strong colocalization signal was found among birthweight, DNA methylation, and gene expression for the following genes: PLEKHA1, FES, PRMT7, and CTDNEP1. Gene set enrichment analysis was performed as well and found that low birthweight is associated in substantial upregulation of genes associated with oxidative stress, immune response, adipogenesis, myogenesis, and the production of pancreatic ß cells.  

Study strengths and limitations

The study is one of the first to identify regulatory targets for placental DNA methylation and gene expression in previously identified GWAS loci associated with low birthweight. For example, DNA methylation was found to influence gene expression of WNT3A, CTDNEP1, and RANBP2, which have previously been shown in animal studies to impact the vascularization and development of the placenta, embryogenesis, and fetal growth. The study also identified 4 genes (PLEKHA1, FES, PRMT7, and CTDNEP1) thought to have direct regulatory influence on placental DNA methylation and gene expression.

A limitation of the study is that it could not distinguish between whether the epigenetic changes we outlined have a maternal or fetal origin. Another limitation is that tissue used by the authors for analysis was a small placental biopsy, which does not accurately reflect the genetic heterogeneity of the placenta. Finally, this study does not establish causality between the identified epigenetic pathways and low birthweight. ●

Whole exome sequencing’s role in diagnosing genetic causes of FGR with and without associated anomalies

Mone F, Mellis R, Gabriel H, et al. Should we offer prenatal exome sequencing for intrauterine growth restriction or short long bones? A systematic review and meta-analysis. Am J Obstet Gynecol. Published online October 7, 2022. doi:10.1016/j.ajog.2022.09.045

Multiple factors can play a role in FGR, including inherent maternal, placental, or fetal factors; the environment; and/or nutrition. However, prenatal diagnosis is an important consideration when exploring the underlying etiology for a growth-restricted fetus, especially in severe or early-onset cases. Many genetic conditions do not result in structural anomalies but can disrupt overall growth. Additionally, phenotyping in the prenatal period is limited and can miss more subtle physical differences that could point to a genetic cause. 

When compared with karyotype, chromosomal microarray (CMA) has been shown to increase the diagnostic yield in cases of isolated early FGR by 5%,^1,2 and the incidence of chromosomal abnormalities has been reported to be as high as 19% in this population. Let’s explore the data on exome sequencing for prenatal diagnosis in cases of isolated FGR. 

Meta-analysis details

In this meta-analysis, the authors reviewed 19 cohort studies or case series that investigated the yield of prenatal sequencing in fetuses with intrauterine growth restriction (IUGR) or short long bones, both in association with and without additional anomalies. All cases had nondiagnostic cytogenetic results. Fetal DNA in most cases was obtained through amniocentesis. Variants classified as likely pathogenic and pathogenic were considered diagnostic. The authors then calculated the incremental yield of prenatal sequencing over cytogenetic studies as a pooled value, comparing the following groups:

• isolated FGR
• growth restriction with associated anomalies
• isolated short long bones
• short long bones with additional skeletal features.  

Study outcomes 

The total number of cases were as follows: isolated IUGR (n = 71), IUGR associated with additional anomalies (n = 45), isolated short long bones (n = 84), and short long bones associated with additional skeletal findings (n = 252). Causative pathogenic or likely pathogenic variants were identified in 224 (50%) cases. Apparent incremental yields with prenatal sequencing were as follows for the 4 groups (as illustrated in the FIGURE):

• 4% in isolated IUGR (95% confidence interval [CI], -5%–12%)
• 30% in IUGR with additional anomalies (95% CI, 13%–47%)
• 48% in isolated short long bones (95% CI, 26%–70%)
• 68% in short long bones with additional skeletal changes (95% CI, 58%–77%).

Overall, the authors concluded that prenatal sequencing does not improve prenatal diagnosis in cases of isolated IUGR. The majority of these cases were thought to be related to placental insufficiency.

Strengths and limitations 

The main limitation of this study with regard to our discussion is the small study populationof isolated growth restriction. The authors indicate that the number of cases of isolated IUGR were too small to draw firm conclusions. Another limitation was the heterogeneity of the isolated FGR population, which was not limited to severe or early-onset cases. However, the authors did demonstrate that growth restriction in association with fetal anomalies has very high genetic yield rates with prenatal sequencing. 

Continue to: Can whole exome sequencing diagnose genetic causes in cases of severe isolated FGR?...

 

 

Can whole exome sequencing diagnose genetic causes in cases of severe isolated FGR? 

Zhou H, Fu F, Wang Y, et al. Genetic causes of isolated and severe fetal growth restriction in normal chromosomal microarray analysis. Int J Gynaecol Obstet. Published online December 10, 2022. doi:10.1002/ijgo.14620

Severe FGR is diagnosed based on an estimated fetal weight (EFW) or abdominal circumference (AC) below the third percentile. As we discussed in the above study by Mone and colleagues, it does not appear that prenatal sequencing significantly improves the diagnostic yield in all isolated FGR cases. However, this has not been previously explored in isolated severe FGR or cases of early-onset FGR (<32 weeks’ gestation). We know that several monogenic conditions are associated with severe and early-onset isolated fetal growth impairment, including but not limited to Cornelia de Lange syndrome, Smith-Lemli-Opitz syndrome, and Meier-Gorlin syndrome. Often, these syndromes can present in the prenatal period without other phenotypic findings. Therefore, this study explored the possibility that prenatal sequencing plays an important role for severe cases of FGR with nondiagnostic CMA and/or karyotype. 

Retrospective study details 

Zhou and colleagues retrospectively analyzed 51 cases of severe (EFW or AC below the third percentile) isolated FGR with negative CMA who underwent trio whole exome sequencing, which includes submitting fetal cells as well as both parental samples for testing. Patients with abnormal toxoplasmosis, rubella, cytomegalovirus, and herpes simplex virus (TORCH) tests; structural anomalies; and multiple gestation were excluded from the analysis. As in the study by Mone et al, variants classified as likely pathogenic and pathogenic were categorized as diagnostic. 

Results

Eight of 51 cases (15.7%) with severe isolated FGR had diagnostic findings on trio whole exome sequencing as shown in the TABLE. Another 8 cases (15.7%) were found to have variants of unknown significance, of which 2 were later determined to be novel pathogenic variants. Genetic conditions uncovered in this cohort include Cornelia de Lange syndrome, pyruvate dehydrogenase deficiency, Dent disease, trichohepaticenteric syndrome, achondroplasia, osteogenesis imperfecta, Pendred syndrome, and both autosomal dominant type 3A and autosomal recessive type 1A deafness. All 10 cases with diagnostic whole exome sequencing or identified novel pathogenic variants were affected by early-onset FGR (<32 weeks’ gestation). Of these 10 cases, 7 patients underwent pregnancy termination.

To summarize, a total of 10 cases (19.6%) of severe isolated early-onset FGR with negative cytogenetic studies were subsequently diagnosed with an underlying genetic condition using prenatal trio whole exome sequencing. 

Strengths and limitations 

This study is retrospective and has a small sample size (n = 51) that was mostly limited to early-onset isolated severe FGR. However, the diagnostic yield (19.6%) of whole exome sequencing after negative CMA testing was noteworthy and shows that monogenic conditions are an important consideration in the evaluation of severe early-onset FGR, even in the absence of structural abnormalities. 

Could epigenetic mechanisms of placental dysregulation explain low birthweight and future cardiometabolic disease?  

Tekola-Ayele F, Zeng X, Chatterjee S, et al. Placental multi-omics integration identifies candidate functional genes for birthweight. Nat Commun. 2022;13:2384.

FGR has been linked to greater mortality in childhood and increased risk for cardiometabolic disease in adulthood. While genomewide associations studies (GWAS) have defined areas of interest linking genetic variants to low birthweight, their relationship to epigenetic changes in the placenta as well as biologic and functional mechanisms are not yet well understood.  

Multiomics used to identify candidate functional genes for birthweight 

This study analyzed the methylation and gene expression patterns of 291 placental samples, integrating findings into pathways of previously defined GWAS variants. Patient samples were obtained from participants in the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Fetal Growth Studies–Singleton cohort. The cohort is ethnically diverse, with 97 Hispanic, 74 White, 71 Black, and 49 Asian participants. Of 286 single nucleotide polymorphisms (SNPs) found to be associated with birthweight, 273 were analyzed as part of the authors’ data set. These were found to have 7,901 unique protein-coding mRNAs (expression quantitative trait loci [eQTL]) and more than 100,000 nearby (within 1 Mb) CpG islands thought to be involved in changes in DNA methylation (methylation quantitative trait loci [mQTL]). Each functionally connected GWAS-eQTL-mQTL association is referred to as a triplet.

The next arm of the study investigatedthe connections and pathways within each triplet. Three possible scenarios were explored for birthweight GWAS SNPs using a causal interference test (CIT):

1. the SNP alters placental DNA methylation, which then influences gene expression
2. the SNP first alters placental DNA expression, which then influences methylation
3. the SNP influences placental DNA expression and methylation independently, with no notable crossover between their pathways.

Triplets were investigated using the Mendelian randomization (MR) Steiger directionality test to validate the directionality of the pathways found by CIT. Lastly, the possibility of linkage disequilibrium was also studied using the moloc test. 

Results

Using CIT, a causal relationship was predicted in 88 of 197 triplets, in which 84 (95.5%) indicated DNA methylation influences gene expression, and 4 (4.5%) indicated gene expression influences DNA methylation. The authors also used the MR Steiger test to investigate triplets to identify possible causal pathways. Using the MR Steiger test, only 3 of 45 (7%) triplets were found to have independent gene expression and methylation pathways. Thirty-eight of 45 (84%) triplets indicated that gene expression influences DNA methylation, and 7 (15%)triplets demonstrated that DNA methylation influences gene expression. Consistent predictions between CIT and the MR Steiger test revealed 3 triplets in which DNA methylation influences gene expression for the following genes: WNT3A, CTDNEP1, and RANBP2. Additionally, a strong colocalization signal was found among birthweight, DNA methylation, and gene expression for the following genes: PLEKHA1, FES, PRMT7, and CTDNEP1. Gene set enrichment analysis was performed as well and found that low birthweight is associated in substantial upregulation of genes associated with oxidative stress, immune response, adipogenesis, myogenesis, and the production of pancreatic ß cells.  

Study strengths and limitations

The study is one of the first to identify regulatory targets for placental DNA methylation and gene expression in previously identified GWAS loci associated with low birthweight. For example, DNA methylation was found to influence gene expression of WNT3A, CTDNEP1, and RANBP2, which have previously been shown in animal studies to impact the vascularization and development of the placenta, embryogenesis, and fetal growth. The study also identified 4 genes (PLEKHA1, FES, PRMT7, and CTDNEP1) thought to have direct regulatory influence on placental DNA methylation and gene expression.

A limitation of the study is that it could not distinguish between whether the epigenetic changes we outlined have a maternal or fetal origin. Another limitation is that tissue used by the authors for analysis was a small placental biopsy, which does not accurately reflect the genetic heterogeneity of the placenta. Finally, this study does not establish causality between the identified epigenetic pathways and low birthweight. ●

To the Editor:

Syringomas are common benign tumors of the eccrine sweat glands that usually manifest clinically as multiple flesh-colored papules. They are most commonly seen on the face, neck, and chest of adolescent girls. Syringomas may appear at any site of the body but are rare in the vulva. We present a case of a 51-year-old woman who was referred to the Division of Gynecologic Oncology at the University of Alabama at Birmingham for further management of a tumor carrying a differential diagnosis of vulvar syringoma vs microcystic adnexal carcinoma (MAC).

A 51-year-old woman presented to dermatology (G.G.) and was referred to the Division of Gynecologic Oncology at the University of Alabama at Birmingham for further management of possible vulvar syringoma vs MAC. The patient previously had been evaluated at an outside community practice due to dyspareunia, vulvar discomfort, and vulvar irregularities of 1 month’s duration. At that time, a small biopsy was performed, and the histologic differential diagnosis included syringoma vs an adnexal carcinoma. Consequently, she was referred to gynecologic oncology for further management.

Pelvic examination revealed multilobular nodular areas overlying the clitoral hood that extended down to the labia majora. The nodular processes did not involve the clitoris, labia minora, or perineum. A mobile isolated lymph node measuring 2.0×1.0 cm in the right inguinal area also was noted. The patient’s clinical history was notable for right breast carcinoma treated with a right mastectomy with axillary lymph node dissection that showed metastatic disease. She also underwent adjuvant chemotherapy with paclitaxel and doxorubicin for breast carcinoma.

After discussing the diagnostic differential and treatment options, the patient elected to undergo a bilateral partial radical vulvectomy with reconstruction and resection of the right inguinal lymph node. Gross examination of the vulvectomy specimen showed multiple flesh-colored papules (FIGURE 1). Histologic examination revealed a neoplasm with sweat gland differentiation that was broad and poorly circumscribed but confined to the dermis (FIGURES 2A and 2B). The neoplasm was composed of epithelial cells that formed ductlike structures, lined by 2 layers of cuboidal epithelium within a fibrous stroma (FIGURE 2C). A toluidine blue special stain was performed and demonstrated an increased amount of mast cells in the tissue (FIGURE 3). Immunohistochemical stains for gross cystic disease fluid protein, estrogen receptor (ER), and progesterone receptor (PR) were negative in the tumor cells. The lack of cytologic atypia, perineural invasion, and deep infiltration into the subcutis favored a syringoma. One month later, the case was presented at the Tumor Board Conference at the University of Alabama at Birmingham where a final diagnosis of vulvar syringoma was agreed upon and discussed with the patient. At that time, no recurrence was evident and follow-up was recommended.

Syringomas are benign tumors of the sweat glands that are fairly common and appear to have a predilection for women. Although most of the literature classifies them as eccrine neoplasms, the term syringoma can be used to describe neoplasms of either apocrine or eccrine lineage.¹ To rule out an apocrine lineage of the tumor in our patient, we performed immunohistochemistry for gross cystic disease fluid protein, a marker of apocrine differentiation. This stain highlighted normal apocrine glands that were not involved in the tumor proliferation.

Syringomas may occur at any site on the body but are prone to occur on the periorbital area, especially the eyelids.¹ Some of the atypical locations for a syringoma include the anterior neck, chest, abdomen, genitals, axillae, groin, and buttocks.² Vulvar syringomas were first reported by Carneiro³ in 1971 as usually affecting adolescent girls and middle-aged women. There have been approximately 40 reported cases affecting women aged 8 to 78 years.^4,5 Vulvar syringomas classically appear as firm or soft, flesh-colored to transparent, papular lesions. The 2 other clinical variants are miliumlike, whitish, cystic papules as well as lichenoid papules.⁶ Pérez-Bustillo et al⁵ reported a case of the lichenoid papule variant on the labia majora of a 78-year-old woman who presented with intermittent vulvar pruritus of 4 years’ duration. Due to this patient’s 9-year history of urinary incontinence, the lesions had been misdiagnosed as irritant dermatitis and associated lichen simplex chronicus (LSC). This case is a reminder to consider vulvar syringoma in patients with LSC who respond poorly to oral antihistamines and topical steroids.⁵ Rarely, multiple clinical variants may coexist. In a case reported by Dereli et al,⁷ a 19-year-old woman presented with concurrent classical and miliumlike forms of vulvar syringoma.

Vulvar syringomas usually present as multiple lesions involving both sides of the labia majora; however, Blasdale and McLelland⁸ reported a single isolated syringoma of the vulva on the anterior right labia minora that measured 1.0×0.5 cm, leading the lesion to be described as a giant syringoma.

Vulvar syringomas usually are asymptomatic and noticed during routine gynecologic examination. Therefore, it is believed that they likely are underdiagnosed.⁵ When symptomatic, they commonly present with constant⁹ or intermittent⁵ pruritus, which may intensify during menstruation, pregnancy, and summertime.^6,10-12 Gerdsen et al¹⁰ documented a 27-year-old woman who presented with a 2-year history of pruritic vulvar skin lesions that became exacerbated during menstruation, which raised the possibility of cyclical hormonal changes being responsible for periodic exacerbation of vulvar pruritus during menstruation. In addition, patients may experience an increase in size and number of the lesions during pregnancy. Bal et al¹¹ reported a 24-year-old primigravida with vulvar papular lesions that intensified during pregnancy. She had experienced intermittent vulvar pruritus for 12 years but had no change in symptoms during menstruation.¹¹ Few studies have attempted to evaluate the presence of ER and PR in the syringomas. A study of 9 nonvulvar syringomas by Wallace and Smoller¹³ showed ER positivity in 1 case and PR positivity in 8 cases, lending support to the hormonal theory; however, in another case series of 15 vulvar syringomas, Huang et al⁶ failed to show ER and PR expression by immunohistochemical staining. A case report published 3 years earlier documented the first case of PR positivity on a vulvar syringoma.¹⁴ Our patient also was negative for ER and PR, which suggested that hormonal status is important in some but not all syringomas.

Patients with vulvar syringomas also might have coexisting extragenital syringomas in the neck,⁴ eyelids,^6,7,10 and periorbital area,⁶ and thorough examination of the body is essential. If an extragenital syringoma is diagnosed, a vulvar syringoma should be considered, especially when the patient presents with unexplained genital symptoms. Although no proven hereditary transmission pattern has been established, family history of syringomas has been established in several cases.¹⁵ In a case series reported by Huang et al,⁶ 4 of 18 patients reported a family history of periorbital syringomas. In our case, the patient did not report a family history of syringomas.

The differential diagnosis of vulvar lesions with pruritus is broad and includes Fox-Fordyce disease, lichen planus, LSC, epidermal cysts, senile angiomas, dystrophic calcinosis, xanthomas, steatocytomas, soft fibromas, condyloma acuminatum, and candidiasis. Vulvar syringomas might have a nonspecific appearance, and histologic examination is essential to confirm the diagnosis and rule out any malignant process such as MAC, vulvar intraepithelial neoplasia, extramammary Paget disease, or other glandular neoplasms of the vulva.

Microcystic adnexal carcinoma was first reported in 1982 by Goldstein et al¹⁶ as a locally aggressive neoplasm that can be confused with benign adnexal neoplasms, particularly desmoplastic trichoepithelioma, trichoadenoma, and syringoma. Microcystic adnexal carcinomas present as slow-growing, flesh-colored papules that may resemble syringomas and appear in similar body sites. Histologic examination is essential to differentiate between these two entities. Syringomas are tumors confined to the dermis and are composed of multiple small ducts lined by 2 layers of cuboidal epithelium within a dense fibrous stroma. Unlike syringomas, MACs usually infiltrate diffusely into the dermis and subcutis and may extend into the underlying muscle. Although bland cytologic features predominate, perineural invasion frequently is present in MACs. A potential pitfall of misdiagnosis can be caused by a superficial biopsy that may reveal benign histologic appearance, particularly in the upper level of the tumor where it may be confused with a syringoma or a benign follicular neoplasm.¹⁷

The initial biopsy performed on our patient was possibly not deep enough to render an unequivocal diagnosis and therefore bilateral partial radical vulvectomy was considered. After surgery, histologic examination of the resection specimen revealed a poorly circumscribed tumor confined to the dermis. The tumor was broad and the lack of deep infiltration into the subcutis and perineural invasion favored a syringoma (FIGURES 2A and 2B). These findings were consistent with case reports that documented syringomas as being more wide than deep on microscopic examination, whereas the opposite pertained to MAC.¹⁸ Cases of plaque-type syringomas that initially were misdiagnosed as MACs also have been reported.¹⁹ Because misdiagnosis may affect the treatment plan and potentially result in unnecessary surgery, caution should be taken when differentiating between these two entities. When a definitive diagnosis cannot be rendered on a superficial biopsy, a recommendation should be made for a deeper biopsy sampling the subcutis.

For the majority of the patients with vulvar syringomas, treatment is seldom required due to their asymptomatic nature; however, patients who present with symptoms usually report pruritus of variable intensities and patterns. A standardized treatment does not exist for vulvar syringomas, and oral or topical treatment might be used as an initial approach. Commonly prescribed medications with variable results include topical corticosteroids, oral antihistamines, and topical retinoids. In a case reported by Iwao et al,²⁰ vulvar syringomas were successfully treated with tranilast, which has anti-inflammatory and immunomodulatory effects. This medication could have a possible dual action—inhibiting the release of chemical mediators from the mast cells and inhibiting the release of IL-1β from the eccrine duct, which could suppress the proliferation of stromal connective tissue. Our case was stained with toluidine blue and showed an increased number of mast cells in the tissue (FIGURE 3).Patients who are unresponsive to tranilast or have extensive disease resulting in cosmetic disfigurement might benefit from more invasive treatment methods including a variety of lasers, cryotherapy, electrosurgery, and excision. Excisions should include the entire tumor to avoid recurrence. In a case reported by Garman and Metry,²¹ the lesions were surgically excised using small 2- to 3-mm punches; however, several weeks later the lesions recurred. Our patient presented with a 1-month evolution of dyspareunia, vulvar discomfort, and vulvar irregularities that were probably not treated with oral or topical medications before being referred for surgery.

We report a case of a vulvar syringoma that presented diagnostic challenges in the initial biopsy, which prevented the exclusion of an MAC. After partial radical vulvectomy, histologic examination was more definitive, showing lack of deep infiltration into the subcutis or perineural invasion that are commonly seen in MAC. This case is an example of a notable pitfall in the diagnosis of vulvar syringoma on a limited biopsy leading to overtreatment. Raising awareness of this entity is the only modality to prevent misdiagnosis. We encourage reporting of further cases of syringomas, particularly those with atypical locations or patterns that may cause diagnostic problems. ●

To the Editor:

Syringomas are common benign tumors of the eccrine sweat glands that usually manifest clinically as multiple flesh-colored papules. They are most commonly seen on the face, neck, and chest of adolescent girls. Syringomas may appear at any site of the body but are rare in the vulva. We present a case of a 51-year-old woman who was referred to the Division of Gynecologic Oncology at the University of Alabama at Birmingham for further management of a tumor carrying a differential diagnosis of vulvar syringoma vs microcystic adnexal carcinoma (MAC).

A 51-year-old woman presented to dermatology (G.G.) and was referred to the Division of Gynecologic Oncology at the University of Alabama at Birmingham for further management of possible vulvar syringoma vs MAC. The patient previously had been evaluated at an outside community practice due to dyspareunia, vulvar discomfort, and vulvar irregularities of 1 month’s duration. At that time, a small biopsy was performed, and the histologic differential diagnosis included syringoma vs an adnexal carcinoma. Consequently, she was referred to gynecologic oncology for further management.

Pelvic examination revealed multilobular nodular areas overlying the clitoral hood that extended down to the labia majora. The nodular processes did not involve the clitoris, labia minora, or perineum. A mobile isolated lymph node measuring 2.0×1.0 cm in the right inguinal area also was noted. The patient’s clinical history was notable for right breast carcinoma treated with a right mastectomy with axillary lymph node dissection that showed metastatic disease. She also underwent adjuvant chemotherapy with paclitaxel and doxorubicin for breast carcinoma.

After discussing the diagnostic differential and treatment options, the patient elected to undergo a bilateral partial radical vulvectomy with reconstruction and resection of the right inguinal lymph node. Gross examination of the vulvectomy specimen showed multiple flesh-colored papules (FIGURE 1). Histologic examination revealed a neoplasm with sweat gland differentiation that was broad and poorly circumscribed but confined to the dermis (FIGURES 2A and 2B). The neoplasm was composed of epithelial cells that formed ductlike structures, lined by 2 layers of cuboidal epithelium within a fibrous stroma (FIGURE 2C). A toluidine blue special stain was performed and demonstrated an increased amount of mast cells in the tissue (FIGURE 3). Immunohistochemical stains for gross cystic disease fluid protein, estrogen receptor (ER), and progesterone receptor (PR) were negative in the tumor cells. The lack of cytologic atypia, perineural invasion, and deep infiltration into the subcutis favored a syringoma. One month later, the case was presented at the Tumor Board Conference at the University of Alabama at Birmingham where a final diagnosis of vulvar syringoma was agreed upon and discussed with the patient. At that time, no recurrence was evident and follow-up was recommended.

Syringomas are benign tumors of the sweat glands that are fairly common and appear to have a predilection for women. Although most of the literature classifies them as eccrine neoplasms, the term syringoma can be used to describe neoplasms of either apocrine or eccrine lineage.¹ To rule out an apocrine lineage of the tumor in our patient, we performed immunohistochemistry for gross cystic disease fluid protein, a marker of apocrine differentiation. This stain highlighted normal apocrine glands that were not involved in the tumor proliferation.

Syringomas may occur at any site on the body but are prone to occur on the periorbital area, especially the eyelids.¹ Some of the atypical locations for a syringoma include the anterior neck, chest, abdomen, genitals, axillae, groin, and buttocks.² Vulvar syringomas were first reported by Carneiro³ in 1971 as usually affecting adolescent girls and middle-aged women. There have been approximately 40 reported cases affecting women aged 8 to 78 years.^4,5 Vulvar syringomas classically appear as firm or soft, flesh-colored to transparent, papular lesions. The 2 other clinical variants are miliumlike, whitish, cystic papules as well as lichenoid papules.⁶ Pérez-Bustillo et al⁵ reported a case of the lichenoid papule variant on the labia majora of a 78-year-old woman who presented with intermittent vulvar pruritus of 4 years’ duration. Due to this patient’s 9-year history of urinary incontinence, the lesions had been misdiagnosed as irritant dermatitis and associated lichen simplex chronicus (LSC). This case is a reminder to consider vulvar syringoma in patients with LSC who respond poorly to oral antihistamines and topical steroids.⁵ Rarely, multiple clinical variants may coexist. In a case reported by Dereli et al,⁷ a 19-year-old woman presented with concurrent classical and miliumlike forms of vulvar syringoma.

Vulvar syringomas usually present as multiple lesions involving both sides of the labia majora; however, Blasdale and McLelland⁸ reported a single isolated syringoma of the vulva on the anterior right labia minora that measured 1.0×0.5 cm, leading the lesion to be described as a giant syringoma.

Vulvar syringomas usually are asymptomatic and noticed during routine gynecologic examination. Therefore, it is believed that they likely are underdiagnosed.⁵ When symptomatic, they commonly present with constant⁹ or intermittent⁵ pruritus, which may intensify during menstruation, pregnancy, and summertime.^6,10-12 Gerdsen et al¹⁰ documented a 27-year-old woman who presented with a 2-year history of pruritic vulvar skin lesions that became exacerbated during menstruation, which raised the possibility of cyclical hormonal changes being responsible for periodic exacerbation of vulvar pruritus during menstruation. In addition, patients may experience an increase in size and number of the lesions during pregnancy. Bal et al¹¹ reported a 24-year-old primigravida with vulvar papular lesions that intensified during pregnancy. She had experienced intermittent vulvar pruritus for 12 years but had no change in symptoms during menstruation.¹¹ Few studies have attempted to evaluate the presence of ER and PR in the syringomas. A study of 9 nonvulvar syringomas by Wallace and Smoller¹³ showed ER positivity in 1 case and PR positivity in 8 cases, lending support to the hormonal theory; however, in another case series of 15 vulvar syringomas, Huang et al⁶ failed to show ER and PR expression by immunohistochemical staining. A case report published 3 years earlier documented the first case of PR positivity on a vulvar syringoma.¹⁴ Our patient also was negative for ER and PR, which suggested that hormonal status is important in some but not all syringomas.

Patients with vulvar syringomas also might have coexisting extragenital syringomas in the neck,⁴ eyelids,^6,7,10 and periorbital area,⁶ and thorough examination of the body is essential. If an extragenital syringoma is diagnosed, a vulvar syringoma should be considered, especially when the patient presents with unexplained genital symptoms. Although no proven hereditary transmission pattern has been established, family history of syringomas has been established in several cases.¹⁵ In a case series reported by Huang et al,⁶ 4 of 18 patients reported a family history of periorbital syringomas. In our case, the patient did not report a family history of syringomas.

The differential diagnosis of vulvar lesions with pruritus is broad and includes Fox-Fordyce disease, lichen planus, LSC, epidermal cysts, senile angiomas, dystrophic calcinosis, xanthomas, steatocytomas, soft fibromas, condyloma acuminatum, and candidiasis. Vulvar syringomas might have a nonspecific appearance, and histologic examination is essential to confirm the diagnosis and rule out any malignant process such as MAC, vulvar intraepithelial neoplasia, extramammary Paget disease, or other glandular neoplasms of the vulva.

Microcystic adnexal carcinoma was first reported in 1982 by Goldstein et al¹⁶ as a locally aggressive neoplasm that can be confused with benign adnexal neoplasms, particularly desmoplastic trichoepithelioma, trichoadenoma, and syringoma. Microcystic adnexal carcinomas present as slow-growing, flesh-colored papules that may resemble syringomas and appear in similar body sites. Histologic examination is essential to differentiate between these two entities. Syringomas are tumors confined to the dermis and are composed of multiple small ducts lined by 2 layers of cuboidal epithelium within a dense fibrous stroma. Unlike syringomas, MACs usually infiltrate diffusely into the dermis and subcutis and may extend into the underlying muscle. Although bland cytologic features predominate, perineural invasion frequently is present in MACs. A potential pitfall of misdiagnosis can be caused by a superficial biopsy that may reveal benign histologic appearance, particularly in the upper level of the tumor where it may be confused with a syringoma or a benign follicular neoplasm.¹⁷

The initial biopsy performed on our patient was possibly not deep enough to render an unequivocal diagnosis and therefore bilateral partial radical vulvectomy was considered. After surgery, histologic examination of the resection specimen revealed a poorly circumscribed tumor confined to the dermis. The tumor was broad and the lack of deep infiltration into the subcutis and perineural invasion favored a syringoma (FIGURES 2A and 2B). These findings were consistent with case reports that documented syringomas as being more wide than deep on microscopic examination, whereas the opposite pertained to MAC.¹⁸ Cases of plaque-type syringomas that initially were misdiagnosed as MACs also have been reported.¹⁹ Because misdiagnosis may affect the treatment plan and potentially result in unnecessary surgery, caution should be taken when differentiating between these two entities. When a definitive diagnosis cannot be rendered on a superficial biopsy, a recommendation should be made for a deeper biopsy sampling the subcutis.

For the majority of the patients with vulvar syringomas, treatment is seldom required due to their asymptomatic nature; however, patients who present with symptoms usually report pruritus of variable intensities and patterns. A standardized treatment does not exist for vulvar syringomas, and oral or topical treatment might be used as an initial approach. Commonly prescribed medications with variable results include topical corticosteroids, oral antihistamines, and topical retinoids. In a case reported by Iwao et al,²⁰ vulvar syringomas were successfully treated with tranilast, which has anti-inflammatory and immunomodulatory effects. This medication could have a possible dual action—inhibiting the release of chemical mediators from the mast cells and inhibiting the release of IL-1β from the eccrine duct, which could suppress the proliferation of stromal connective tissue. Our case was stained with toluidine blue and showed an increased number of mast cells in the tissue (FIGURE 3).Patients who are unresponsive to tranilast or have extensive disease resulting in cosmetic disfigurement might benefit from more invasive treatment methods including a variety of lasers, cryotherapy, electrosurgery, and excision. Excisions should include the entire tumor to avoid recurrence. In a case reported by Garman and Metry,²¹ the lesions were surgically excised using small 2- to 3-mm punches; however, several weeks later the lesions recurred. Our patient presented with a 1-month evolution of dyspareunia, vulvar discomfort, and vulvar irregularities that were probably not treated with oral or topical medications before being referred for surgery.

We report a case of a vulvar syringoma that presented diagnostic challenges in the initial biopsy, which prevented the exclusion of an MAC. After partial radical vulvectomy, histologic examination was more definitive, showing lack of deep infiltration into the subcutis or perineural invasion that are commonly seen in MAC. This case is an example of a notable pitfall in the diagnosis of vulvar syringoma on a limited biopsy leading to overtreatment. Raising awareness of this entity is the only modality to prevent misdiagnosis. We encourage reporting of further cases of syringomas, particularly those with atypical locations or patterns that may cause diagnostic problems. ●

To the Editor:

Syringomas are common benign tumors of the eccrine sweat glands that usually manifest clinically as multiple flesh-colored papules. They are most commonly seen on the face, neck, and chest of adolescent girls. Syringomas may appear at any site of the body but are rare in the vulva. We present a case of a 51-year-old woman who was referred to the Division of Gynecologic Oncology at the University of Alabama at Birmingham for further management of a tumor carrying a differential diagnosis of vulvar syringoma vs microcystic adnexal carcinoma (MAC).

A 51-year-old woman presented to dermatology (G.G.) and was referred to the Division of Gynecologic Oncology at the University of Alabama at Birmingham for further management of possible vulvar syringoma vs MAC. The patient previously had been evaluated at an outside community practice due to dyspareunia, vulvar discomfort, and vulvar irregularities of 1 month’s duration. At that time, a small biopsy was performed, and the histologic differential diagnosis included syringoma vs an adnexal carcinoma. Consequently, she was referred to gynecologic oncology for further management.

Pelvic examination revealed multilobular nodular areas overlying the clitoral hood that extended down to the labia majora. The nodular processes did not involve the clitoris, labia minora, or perineum. A mobile isolated lymph node measuring 2.0×1.0 cm in the right inguinal area also was noted. The patient’s clinical history was notable for right breast carcinoma treated with a right mastectomy with axillary lymph node dissection that showed metastatic disease. She also underwent adjuvant chemotherapy with paclitaxel and doxorubicin for breast carcinoma.

After discussing the diagnostic differential and treatment options, the patient elected to undergo a bilateral partial radical vulvectomy with reconstruction and resection of the right inguinal lymph node. Gross examination of the vulvectomy specimen showed multiple flesh-colored papules (FIGURE 1). Histologic examination revealed a neoplasm with sweat gland differentiation that was broad and poorly circumscribed but confined to the dermis (FIGURES 2A and 2B). The neoplasm was composed of epithelial cells that formed ductlike structures, lined by 2 layers of cuboidal epithelium within a fibrous stroma (FIGURE 2C). A toluidine blue special stain was performed and demonstrated an increased amount of mast cells in the tissue (FIGURE 3). Immunohistochemical stains for gross cystic disease fluid protein, estrogen receptor (ER), and progesterone receptor (PR) were negative in the tumor cells. The lack of cytologic atypia, perineural invasion, and deep infiltration into the subcutis favored a syringoma. One month later, the case was presented at the Tumor Board Conference at the University of Alabama at Birmingham where a final diagnosis of vulvar syringoma was agreed upon and discussed with the patient. At that time, no recurrence was evident and follow-up was recommended.

Syringomas are benign tumors of the sweat glands that are fairly common and appear to have a predilection for women. Although most of the literature classifies them as eccrine neoplasms, the term syringoma can be used to describe neoplasms of either apocrine or eccrine lineage.¹ To rule out an apocrine lineage of the tumor in our patient, we performed immunohistochemistry for gross cystic disease fluid protein, a marker of apocrine differentiation. This stain highlighted normal apocrine glands that were not involved in the tumor proliferation.

Syringomas may occur at any site on the body but are prone to occur on the periorbital area, especially the eyelids.¹ Some of the atypical locations for a syringoma include the anterior neck, chest, abdomen, genitals, axillae, groin, and buttocks.² Vulvar syringomas were first reported by Carneiro³ in 1971 as usually affecting adolescent girls and middle-aged women. There have been approximately 40 reported cases affecting women aged 8 to 78 years.^4,5 Vulvar syringomas classically appear as firm or soft, flesh-colored to transparent, papular lesions. The 2 other clinical variants are miliumlike, whitish, cystic papules as well as lichenoid papules.⁶ Pérez-Bustillo et al⁵ reported a case of the lichenoid papule variant on the labia majora of a 78-year-old woman who presented with intermittent vulvar pruritus of 4 years’ duration. Due to this patient’s 9-year history of urinary incontinence, the lesions had been misdiagnosed as irritant dermatitis and associated lichen simplex chronicus (LSC). This case is a reminder to consider vulvar syringoma in patients with LSC who respond poorly to oral antihistamines and topical steroids.⁵ Rarely, multiple clinical variants may coexist. In a case reported by Dereli et al,⁷ a 19-year-old woman presented with concurrent classical and miliumlike forms of vulvar syringoma.

Vulvar syringomas usually present as multiple lesions involving both sides of the labia majora; however, Blasdale and McLelland⁸ reported a single isolated syringoma of the vulva on the anterior right labia minora that measured 1.0×0.5 cm, leading the lesion to be described as a giant syringoma.

Vulvar syringomas usually are asymptomatic and noticed during routine gynecologic examination. Therefore, it is believed that they likely are underdiagnosed.⁵ When symptomatic, they commonly present with constant⁹ or intermittent⁵ pruritus, which may intensify during menstruation, pregnancy, and summertime.^6,10-12 Gerdsen et al¹⁰ documented a 27-year-old woman who presented with a 2-year history of pruritic vulvar skin lesions that became exacerbated during menstruation, which raised the possibility of cyclical hormonal changes being responsible for periodic exacerbation of vulvar pruritus during menstruation. In addition, patients may experience an increase in size and number of the lesions during pregnancy. Bal et al¹¹ reported a 24-year-old primigravida with vulvar papular lesions that intensified during pregnancy. She had experienced intermittent vulvar pruritus for 12 years but had no change in symptoms during menstruation.¹¹ Few studies have attempted to evaluate the presence of ER and PR in the syringomas. A study of 9 nonvulvar syringomas by Wallace and Smoller¹³ showed ER positivity in 1 case and PR positivity in 8 cases, lending support to the hormonal theory; however, in another case series of 15 vulvar syringomas, Huang et al⁶ failed to show ER and PR expression by immunohistochemical staining. A case report published 3 years earlier documented the first case of PR positivity on a vulvar syringoma.¹⁴ Our patient also was negative for ER and PR, which suggested that hormonal status is important in some but not all syringomas.

Patients with vulvar syringomas also might have coexisting extragenital syringomas in the neck,⁴ eyelids,^6,7,10 and periorbital area,⁶ and thorough examination of the body is essential. If an extragenital syringoma is diagnosed, a vulvar syringoma should be considered, especially when the patient presents with unexplained genital symptoms. Although no proven hereditary transmission pattern has been established, family history of syringomas has been established in several cases.¹⁵ In a case series reported by Huang et al,⁶ 4 of 18 patients reported a family history of periorbital syringomas. In our case, the patient did not report a family history of syringomas.

The differential diagnosis of vulvar lesions with pruritus is broad and includes Fox-Fordyce disease, lichen planus, LSC, epidermal cysts, senile angiomas, dystrophic calcinosis, xanthomas, steatocytomas, soft fibromas, condyloma acuminatum, and candidiasis. Vulvar syringomas might have a nonspecific appearance, and histologic examination is essential to confirm the diagnosis and rule out any malignant process such as MAC, vulvar intraepithelial neoplasia, extramammary Paget disease, or other glandular neoplasms of the vulva.

Microcystic adnexal carcinoma was first reported in 1982 by Goldstein et al¹⁶ as a locally aggressive neoplasm that can be confused with benign adnexal neoplasms, particularly desmoplastic trichoepithelioma, trichoadenoma, and syringoma. Microcystic adnexal carcinomas present as slow-growing, flesh-colored papules that may resemble syringomas and appear in similar body sites. Histologic examination is essential to differentiate between these two entities. Syringomas are tumors confined to the dermis and are composed of multiple small ducts lined by 2 layers of cuboidal epithelium within a dense fibrous stroma. Unlike syringomas, MACs usually infiltrate diffusely into the dermis and subcutis and may extend into the underlying muscle. Although bland cytologic features predominate, perineural invasion frequently is present in MACs. A potential pitfall of misdiagnosis can be caused by a superficial biopsy that may reveal benign histologic appearance, particularly in the upper level of the tumor where it may be confused with a syringoma or a benign follicular neoplasm.¹⁷

The initial biopsy performed on our patient was possibly not deep enough to render an unequivocal diagnosis and therefore bilateral partial radical vulvectomy was considered. After surgery, histologic examination of the resection specimen revealed a poorly circumscribed tumor confined to the dermis. The tumor was broad and the lack of deep infiltration into the subcutis and perineural invasion favored a syringoma (FIGURES 2A and 2B). These findings were consistent with case reports that documented syringomas as being more wide than deep on microscopic examination, whereas the opposite pertained to MAC.¹⁸ Cases of plaque-type syringomas that initially were misdiagnosed as MACs also have been reported.¹⁹ Because misdiagnosis may affect the treatment plan and potentially result in unnecessary surgery, caution should be taken when differentiating between these two entities. When a definitive diagnosis cannot be rendered on a superficial biopsy, a recommendation should be made for a deeper biopsy sampling the subcutis.

For the majority of the patients with vulvar syringomas, treatment is seldom required due to their asymptomatic nature; however, patients who present with symptoms usually report pruritus of variable intensities and patterns. A standardized treatment does not exist for vulvar syringomas, and oral or topical treatment might be used as an initial approach. Commonly prescribed medications with variable results include topical corticosteroids, oral antihistamines, and topical retinoids. In a case reported by Iwao et al,²⁰ vulvar syringomas were successfully treated with tranilast, which has anti-inflammatory and immunomodulatory effects. This medication could have a possible dual action—inhibiting the release of chemical mediators from the mast cells and inhibiting the release of IL-1β from the eccrine duct, which could suppress the proliferation of stromal connective tissue. Our case was stained with toluidine blue and showed an increased number of mast cells in the tissue (FIGURE 3).Patients who are unresponsive to tranilast or have extensive disease resulting in cosmetic disfigurement might benefit from more invasive treatment methods including a variety of lasers, cryotherapy, electrosurgery, and excision. Excisions should include the entire tumor to avoid recurrence. In a case reported by Garman and Metry,²¹ the lesions were surgically excised using small 2- to 3-mm punches; however, several weeks later the lesions recurred. Our patient presented with a 1-month evolution of dyspareunia, vulvar discomfort, and vulvar irregularities that were probably not treated with oral or topical medications before being referred for surgery.

We report a case of a vulvar syringoma that presented diagnostic challenges in the initial biopsy, which prevented the exclusion of an MAC. After partial radical vulvectomy, histologic examination was more definitive, showing lack of deep infiltration into the subcutis or perineural invasion that are commonly seen in MAC. This case is an example of a notable pitfall in the diagnosis of vulvar syringoma on a limited biopsy leading to overtreatment. Raising awareness of this entity is the only modality to prevent misdiagnosis. We encourage reporting of further cases of syringomas, particularly those with atypical locations or patterns that may cause diagnostic problems. ●

Cutaneous angiosarcoma (cAS) is a rare malignancy arising from vascular or lymphatic tissue. It classically presents during the sixth or seventh decades of life as a raised purple papule or plaque on the head and neck areas.¹ Primary cAS frequently mimics benign conditions, leading to delays in care. Such delays coupled with the aggressive nature of angiosarcomas leads to a poor prognosis. Five-year survival rates range from 11% to 50%, and more than half of patients die within 1 year of diagnosis.^2-7

Currently, there is no consensus on the most effective treatments, as the rare nature of cAS has made the development of controlled clinical trials difficult. Wide local excision (WLE) is most frequently employed; however, the tumor’s infiltrative growth makes complete resection and negative surgical margins difficult to achieve.⁸ Recently, Mohs micrographic surgery (MMS) has been postulated as a treatment option. The tissue-sparing nature and intraoperative margin control of MMS may provide tumor eradication and cosmesis benefits reported with other cutaneous malignancies.⁹

Nearly all localized cASs are treated with surgical excision with or without adjuvant treatment modalities; however, it is unclear which of these modalities provide a survival benefit. We conducted a systematic review of the literature to compare treatment modalities for localized cAS of the head and neck regions and to compare treatments based on tumor stage.

METHODS

A literature search was performed to identify published studies indexed by MEDLINE, Cochrane Central Register of Controlled Trials (CENTRAL), Embase, and PubMed from January 1, 1977, to May 8, 2020, reporting on cAS and treatment modalities used. The search was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines.⁵ Data extracted included patient demographics, tumor characteristics (including T1 [≤5 cm] and T2 [>5 cm and ≤10 cm] based on the American Joint Committee on Cancer soft tissue sarcoma staging criteria), treatments used, follow-up time, overall survival (OS) rates, and complications.^10,11

Studies were required to (1) include participants with head and neck cAS; (2) report original patient data following cAS treatment with surgical (WLE or MMS) and/or nonsurgical modalities (chemotherapy [CT], radiotherapy [RT], immunotherapy [IT]); (3) report outcome data related to OS rates following treatment; and (4) have articles published in English. Given the rare nature of cAS, there was no limitation on the number of participants needed.

The Newcastle-Ottawa scale for observational studies was used to assess the quality of studies.¹² Higher scores indicate low risk of bias, while lower scores represent high risk of bias.

Continuous data were reported with means and SDs, while categorical variables were reported as percentages. Overall survival means and SDs were compared between treatment modalities using an independent sample t test with P<.05 considered statistically significant. Due to the heterogeneity of the data, a meta-analysis was not reported.

RESULTS

Literature Search and Risk of Bias Assessment

There were 283 manuscripts identified, 56 articles read in full, and 40 articles included in the review (Figure). Among the 16 studies not meeting inclusion criteria, 7 did not provide enough data to isolate head and neck cAS cases,^1,13-18 6 did not report outcomes related to the current review,^19-24 and 3 did not provide enough data to isolate different treatment outcomes.^25-27 Among the included studies, 32 reported use of WLE: WLE alone (n=21)^2,7,11,28-45; WLE with RT (n=24)^{2,3,11,28-31,33-36,38-41,43-51}; WLE with CT (n=7)^{2,31,35,39,41,48,52}; WLE with RT and CT (n=11)^{2,29,31,33-35,39,40,48,52,53}; WLE with RT and IT (n=3)^35,54,55; and WLE with RT, CT, and IT (n=1).⁵³ Nine studies reported MMS: MMS alone (n=5)^39,56-59; MMS with RT (n=3)^32,50,60,61; and MMS with RT and CT (n=1).⁵¹

Risk of bias assessment identified low risk in 3 articles. High risk was identified in 5 case reports,^57-61 and 1 study did not describe patient selection.⁴³ Clayton et al⁵⁶ showed intermediate risk, given the study controlled for 1 factor.

Patient Demographics

A total of 1295 patients were included. The pooled mean age of the patients was 67.5 years (range, 3–88 years), and 64.7% were male. There were 79 cases identified as T1 and 105 as T2. A total of 825 cases were treated using WLE with or without adjuvant therapy, while a total of 9 cases were treated using MMS with and without adjuvant therapies (Table). There were 461 cases treated without surgical excision: RT alone (n=261), CT alone (n=38), IT alone (n=35), RT with CT (n=81), RT with IT (n=34), and RT with CT and IT (n=12)(Table). The median follow-up period across all studies was 23.5 months (range, 1–228 months).