Oral fluoroquinolone therapy to treat a respiratory infection is associated with an increased risk of sudden cardiac death (SCD) in patients on hemodialysis, particularly those taking other QT-prolonging medications, a large observational study suggests.

However, in many cases, the absolute risk is relatively small, and the antimicrobial benefits of a fluoroquinolone may outweigh the potential cardiac risks, the researchers say.

“Pathogen-directed treatment of respiratory infections is of the utmost importance. Respiratory fluoroquinolones should be prescribed whenever an amoxicillin-based antibiotic offers suboptimal antimicrobial coverage and clinicians should consider electrocardiographic monitoring,” first author Magdalene M. Assimon, PharmD, PhD, University of North Carolina, Chapel Hill, told this news organization.

The study was published online Oct. 20 in JAMA Cardiology (doi: 10.1001/jamacardio.2021.4234).
 

Nearly twofold increased risk 

The QT interval-prolonging potential of fluoroquinolone antibiotics are well known. However, evidence linking respiratory fluoroquinolones to adverse cardiac outcomes in the hemodialysis population is limited.

These new observational findings are based on a total of 626,322 antibiotic treatment episodes among 264,968 adults (mean age, 61 years; 51% men) receiving in-center hemodialysis – with respiratory fluoroquinolone making up 40.2% of treatment episodes and amoxicillin-based antibiotic treatment episodes making up 59.8%.

The rate of SCD within 5 days of outpatient initiation of a study antibiotic was 105.7 per 100,000 people prescribed a respiratory fluoroquinolone (levofloxacin or moxifloxacin) versus with 40.0 per 100,000 prescribed amoxicillin or amoxicillin with clavulanic acid (weighted hazard ratio: 1.95; 95% confidence interval, 1.57-2.41).

The authors estimate that one additional SCD would occur during a 5-day follow-up period for every 2,273 respiratory fluoroquinolone treatment episodes. Consistent associations were seen when follow-up was extended to 7, 10, and 14 days.

“Our data suggest that curtailing respiratory fluoroquinolone prescribing may be one actionable strategy to mitigate SCD risk in the hemodialysis population. However, the associated absolute risk reduction would be relatively small,” wrote the authors.

They noted that the rate of SCD in the hemodialysis population exceeds that of the general population by more than 20-fold. Most patients undergoing hemodialysis have a least one risk factor for drug-induced QT interval prolongation.

In the current study, nearly 20% of hemodialysis patients prescribed a respiratory fluoroquinolone were taking other medications with known risk for torsades de pointes.

“Our results emphasize the importance of performing a thorough medication review and considering pharmacodynamic drug interactions before prescribing new drug therapies for any condition,” Dr. Assimon and colleagues advised.

They suggest that clinicians consider electrocardiographic monitoring before and during fluoroquinolone therapy in hemodialysis patients, especially in high-risk individuals.
 

Valuable study

Reached for comment, Ankur Shah, MD, of the division of kidney diseases and hypertension, Brown University, Providence, R.I., called the analysis “valuable” and said the results are “consistent with the known association of cardiac arrhythmias with respiratory fluoroquinolone use in the general population, postulated to be due to increased risk of torsades de pointes from QTc prolongation. This abnormal heart rhythm can lead to sudden cardiac death.

“Notably, the population receiving respiratory fluoroquinolones had a higher incidence of cardiac disease at baseline, but the risk persisted after adjustment for this increased burden of comorbidity,” Dr. Shah said in an interview. He was not involved in the current research.

Dr. Shah cautioned that observational data such as these should be considered more “hypothesis-generating than practice-changing, as there may be unrecognized confounders or differences in the population that received the respiratory fluoroquinolones.

“A prospective randomized trial would provide a definitive answer, but in the interim, caution should be taken in using respiratory fluoroquinolones when local bacterial resistance patterns or patient-specific data offer another option,” Dr. Shah concluded.  

Dr. Assimon reported receiving grants from the Renal Research Institute (a subsidiary of Fresenius Medical Care), honoraria from the International Society of Nephrology for serving as a statistical reviewer for Kidney International Reports, and honoraria from the American Society of Nephrology for serving as an editorial fellow for the Journal of the American Society of Nephrology. Dr. Shah has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Oral fluoroquinolone therapy to treat a respiratory infection is associated with an increased risk of sudden cardiac death (SCD) in patients on hemodialysis, particularly those taking other QT-prolonging medications, a large observational study suggests.

However, in many cases, the absolute risk is relatively small, and the antimicrobial benefits of a fluoroquinolone may outweigh the potential cardiac risks, the researchers say.

“Pathogen-directed treatment of respiratory infections is of the utmost importance. Respiratory fluoroquinolones should be prescribed whenever an amoxicillin-based antibiotic offers suboptimal antimicrobial coverage and clinicians should consider electrocardiographic monitoring,” first author Magdalene M. Assimon, PharmD, PhD, University of North Carolina, Chapel Hill, told this news organization.

The study was published online Oct. 20 in JAMA Cardiology (doi: 10.1001/jamacardio.2021.4234).
 

Nearly twofold increased risk 

The QT interval-prolonging potential of fluoroquinolone antibiotics are well known. However, evidence linking respiratory fluoroquinolones to adverse cardiac outcomes in the hemodialysis population is limited.

These new observational findings are based on a total of 626,322 antibiotic treatment episodes among 264,968 adults (mean age, 61 years; 51% men) receiving in-center hemodialysis – with respiratory fluoroquinolone making up 40.2% of treatment episodes and amoxicillin-based antibiotic treatment episodes making up 59.8%.

The rate of SCD within 5 days of outpatient initiation of a study antibiotic was 105.7 per 100,000 people prescribed a respiratory fluoroquinolone (levofloxacin or moxifloxacin) versus with 40.0 per 100,000 prescribed amoxicillin or amoxicillin with clavulanic acid (weighted hazard ratio: 1.95; 95% confidence interval, 1.57-2.41).

The authors estimate that one additional SCD would occur during a 5-day follow-up period for every 2,273 respiratory fluoroquinolone treatment episodes. Consistent associations were seen when follow-up was extended to 7, 10, and 14 days.

“Our data suggest that curtailing respiratory fluoroquinolone prescribing may be one actionable strategy to mitigate SCD risk in the hemodialysis population. However, the associated absolute risk reduction would be relatively small,” wrote the authors.

They noted that the rate of SCD in the hemodialysis population exceeds that of the general population by more than 20-fold. Most patients undergoing hemodialysis have a least one risk factor for drug-induced QT interval prolongation.

In the current study, nearly 20% of hemodialysis patients prescribed a respiratory fluoroquinolone were taking other medications with known risk for torsades de pointes.

“Our results emphasize the importance of performing a thorough medication review and considering pharmacodynamic drug interactions before prescribing new drug therapies for any condition,” Dr. Assimon and colleagues advised.

They suggest that clinicians consider electrocardiographic monitoring before and during fluoroquinolone therapy in hemodialysis patients, especially in high-risk individuals.
 

Valuable study

Reached for comment, Ankur Shah, MD, of the division of kidney diseases and hypertension, Brown University, Providence, R.I., called the analysis “valuable” and said the results are “consistent with the known association of cardiac arrhythmias with respiratory fluoroquinolone use in the general population, postulated to be due to increased risk of torsades de pointes from QTc prolongation. This abnormal heart rhythm can lead to sudden cardiac death.

“Notably, the population receiving respiratory fluoroquinolones had a higher incidence of cardiac disease at baseline, but the risk persisted after adjustment for this increased burden of comorbidity,” Dr. Shah said in an interview. He was not involved in the current research.

Dr. Shah cautioned that observational data such as these should be considered more “hypothesis-generating than practice-changing, as there may be unrecognized confounders or differences in the population that received the respiratory fluoroquinolones.

“A prospective randomized trial would provide a definitive answer, but in the interim, caution should be taken in using respiratory fluoroquinolones when local bacterial resistance patterns or patient-specific data offer another option,” Dr. Shah concluded.  

Dr. Assimon reported receiving grants from the Renal Research Institute (a subsidiary of Fresenius Medical Care), honoraria from the International Society of Nephrology for serving as a statistical reviewer for Kidney International Reports, and honoraria from the American Society of Nephrology for serving as an editorial fellow for the Journal of the American Society of Nephrology. Dr. Shah has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Oral fluoroquinolone therapy to treat a respiratory infection is associated with an increased risk of sudden cardiac death (SCD) in patients on hemodialysis, particularly those taking other QT-prolonging medications, a large observational study suggests.

However, in many cases, the absolute risk is relatively small, and the antimicrobial benefits of a fluoroquinolone may outweigh the potential cardiac risks, the researchers say.

“Pathogen-directed treatment of respiratory infections is of the utmost importance. Respiratory fluoroquinolones should be prescribed whenever an amoxicillin-based antibiotic offers suboptimal antimicrobial coverage and clinicians should consider electrocardiographic monitoring,” first author Magdalene M. Assimon, PharmD, PhD, University of North Carolina, Chapel Hill, told this news organization.

The study was published online Oct. 20 in JAMA Cardiology (doi: 10.1001/jamacardio.2021.4234).
 

Nearly twofold increased risk 

The QT interval-prolonging potential of fluoroquinolone antibiotics are well known. However, evidence linking respiratory fluoroquinolones to adverse cardiac outcomes in the hemodialysis population is limited.

These new observational findings are based on a total of 626,322 antibiotic treatment episodes among 264,968 adults (mean age, 61 years; 51% men) receiving in-center hemodialysis – with respiratory fluoroquinolone making up 40.2% of treatment episodes and amoxicillin-based antibiotic treatment episodes making up 59.8%.

The rate of SCD within 5 days of outpatient initiation of a study antibiotic was 105.7 per 100,000 people prescribed a respiratory fluoroquinolone (levofloxacin or moxifloxacin) versus with 40.0 per 100,000 prescribed amoxicillin or amoxicillin with clavulanic acid (weighted hazard ratio: 1.95; 95% confidence interval, 1.57-2.41).

The authors estimate that one additional SCD would occur during a 5-day follow-up period for every 2,273 respiratory fluoroquinolone treatment episodes. Consistent associations were seen when follow-up was extended to 7, 10, and 14 days.

“Our data suggest that curtailing respiratory fluoroquinolone prescribing may be one actionable strategy to mitigate SCD risk in the hemodialysis population. However, the associated absolute risk reduction would be relatively small,” wrote the authors.

They noted that the rate of SCD in the hemodialysis population exceeds that of the general population by more than 20-fold. Most patients undergoing hemodialysis have a least one risk factor for drug-induced QT interval prolongation.

In the current study, nearly 20% of hemodialysis patients prescribed a respiratory fluoroquinolone were taking other medications with known risk for torsades de pointes.

“Our results emphasize the importance of performing a thorough medication review and considering pharmacodynamic drug interactions before prescribing new drug therapies for any condition,” Dr. Assimon and colleagues advised.

They suggest that clinicians consider electrocardiographic monitoring before and during fluoroquinolone therapy in hemodialysis patients, especially in high-risk individuals.
 

Valuable study

Reached for comment, Ankur Shah, MD, of the division of kidney diseases and hypertension, Brown University, Providence, R.I., called the analysis “valuable” and said the results are “consistent with the known association of cardiac arrhythmias with respiratory fluoroquinolone use in the general population, postulated to be due to increased risk of torsades de pointes from QTc prolongation. This abnormal heart rhythm can lead to sudden cardiac death.

“Notably, the population receiving respiratory fluoroquinolones had a higher incidence of cardiac disease at baseline, but the risk persisted after adjustment for this increased burden of comorbidity,” Dr. Shah said in an interview. He was not involved in the current research.

Dr. Shah cautioned that observational data such as these should be considered more “hypothesis-generating than practice-changing, as there may be unrecognized confounders or differences in the population that received the respiratory fluoroquinolones.

“A prospective randomized trial would provide a definitive answer, but in the interim, caution should be taken in using respiratory fluoroquinolones when local bacterial resistance patterns or patient-specific data offer another option,” Dr. Shah concluded.  

Dr. Assimon reported receiving grants from the Renal Research Institute (a subsidiary of Fresenius Medical Care), honoraria from the International Society of Nephrology for serving as a statistical reviewer for Kidney International Reports, and honoraria from the American Society of Nephrology for serving as an editorial fellow for the Journal of the American Society of Nephrology. Dr. Shah has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

LAS VEGAS – An oral treatment with freeze-dried human stool can successfully treat Clostridioides difficile infections by increasing the diversity of microorganisms in the colon, researchers say.

CP101, under development by Finch Therapeutics, proved more effective than a placebo in preventing recurrent infections for up to 24 weeks.

The CP101 capsules contain a powder of freeze-dried human stools from screened donors. They restore natural diversity that has been disrupted by antibiotics, said Jessica Allegretti, MD, MPH a gastroenterologist at Brigham and Women’s Hospital in Boston.

The treatment offers an alternative to fecal microbiota transplant, which can effectively treat antibiotic-resistant C. difficile infections but is difficult to standardize and administer – and doesn’t have full approval from the U.S. Food and Drug Administration, she added.

“I think this marks a moment in this space where we’re going to have better, safer, and more available options for patients,” she said in an interview. “It’s exciting.”

Dr. Allegretti is an author on three presentations of results from PRISM3, a phase 2 trial of CP101. They will be presented this week at the annual meeting of the American College of Gastroenterology. These results extend out to 24 weeks, whereas the 8-week results of this trial were presented a year ago at the same meeting.
 

Study details

The study enrolled 198 people who received antibiotics for recurrent C. difficile infections. Some patients had two or more recurrences, while others had only one recurrence but were 65 years of age or older.

“That was a unique aspect of this study, to see the effect of bringing a therapy like CP101 earlier in the treatment paradigm,” said Dr. Allegretti. “You can imagine for an older, frail, or more fragile patient that you would want to get rid of this [infection] earlier.”

After waiting 2-6 days for the antibiotics to wash out, the researchers randomly assigned 102 of these patients to take the CP101 pills orally and 96 to take placebo pills, both without bowel preparation.

The two groups were not significantly different in age, gender, comorbidities, the number of C. difficile recurrences, or the type of test used to diagnose the infection (PCR-based vs. toxin EIA-based).

After 8 weeks, 74.5% of those given the CP101 pills had not had a recurrence, compared with 61.5% of those given the placebo. The difference was just barely statistically significant (P = .0488).

Sixteen weeks later, the effect endured, with 73.5% of the CP101 group and 59.4% of the placebo group still free of recurrence. The statistical significance of the difference improved slightly (P = .0347).

Drug-related emergent adverse events were similar between the two groups: 16.3% for the CP101 group vs. 19.2% for the placebo group. These were mostly gastrointestinal symptoms, and none were serious.

Some of the patients received vancomycin as a first-line treatment for C. difficile infections, and the researchers wondered if the washout period was not sufficient to purge that antibiotic, leaving enough to interfere with the effectiveness of CP101.

Therefore, they separately analyzed 40 patients treated with fidaxomicin, which they expected to wash out more quickly. Among these patients, 81% who received CP101 were free of recurrences, at 8 weeks and 24 weeks. This compared with 42.1% of those who received the placebo, at both time points. This difference was more statistically significant (P = .0211).
 

Understanding how it works

To understand better how CP101 achieves its effects, the researchers collected stool samples from the patients and counted the number of different kinds organisms in each sample.

At baseline, the patients had about the same number, but after a week the diversity was greater in the patients treated with CP101, and that difference had increased at week 8. The researchers also found much less diversity of organisms in the stools of those patients who had recurrences of C. difficile infection.

The diversity of microbes in the successfully treated patients appeared to have been introduced by CP101. Dr. Allegretti and colleagues measured the number of organisms in the stool samples that came from CP101. They found that 96% of patients colonized by the CP101 organisms had avoided recurrence of the C. difficile infections, compared with 54.2% of those patients not colonized by these microbes.

“We now have some microbiome-based markers that show us as early as week 1 that the patient is going to be cured or not,” Dr. Allegretti said.

Based on these results, Finch plans to launch a phase 3 trial soon, she said.

The data on colonization is interesting because it has not been found with fecal microbiota transplants, said Purna Kashyap, MBBS, codirector of the Microbiome Program at the Mayo Clinic College of Medicine in Rochester, Minn., who was not involved in the study.

But to better interpret the data, it would be helpful to know more about how the placebo and CP101 groups compared at baseline with regard to medications, immunosuppression, and antibiotics used to treat the C. difficile infections, Dr. Kashyap said. He was struck by the lower cure rate in the portion of the placebo group treated with fidaxomicin.

“Overall, I think these are exciting observations based on the data but require careful review of the entire data to make sense of [them], which will happen when it goes through peer review,” he told this news organization in an email.

Several other standardized microbiota restoration products are under development, including at least two other capsules. In contrast to CP101, which is made up of whole stool, VE303 (Vedanta Biosciences) is a “rationally defined bacterial consortium,” and SER-109 (Seres Therapeutics) is a “consortium of highly purified Firmicutes spores.” VE303 has completed a phase 2 trial, and SER-109 has completed a phase 3 trial.

Dr. Allegretti is a consultant for Finch Therapeutics, which funded the trial. Dr. Kashyap has disclosed no relevant financial relationships.
 

A version of this article first appeared on Medscape.com.

LAS VEGAS – An oral treatment with freeze-dried human stool can successfully treat Clostridioides difficile infections by increasing the diversity of microorganisms in the colon, researchers say.

CP101, under development by Finch Therapeutics, proved more effective than a placebo in preventing recurrent infections for up to 24 weeks.

The CP101 capsules contain a powder of freeze-dried human stools from screened donors. They restore natural diversity that has been disrupted by antibiotics, said Jessica Allegretti, MD, MPH a gastroenterologist at Brigham and Women’s Hospital in Boston.

The treatment offers an alternative to fecal microbiota transplant, which can effectively treat antibiotic-resistant C. difficile infections but is difficult to standardize and administer – and doesn’t have full approval from the U.S. Food and Drug Administration, she added.

“I think this marks a moment in this space where we’re going to have better, safer, and more available options for patients,” she said in an interview. “It’s exciting.”

Dr. Allegretti is an author on three presentations of results from PRISM3, a phase 2 trial of CP101. They will be presented this week at the annual meeting of the American College of Gastroenterology. These results extend out to 24 weeks, whereas the 8-week results of this trial were presented a year ago at the same meeting.
 

Study details

The study enrolled 198 people who received antibiotics for recurrent C. difficile infections. Some patients had two or more recurrences, while others had only one recurrence but were 65 years of age or older.

“That was a unique aspect of this study, to see the effect of bringing a therapy like CP101 earlier in the treatment paradigm,” said Dr. Allegretti. “You can imagine for an older, frail, or more fragile patient that you would want to get rid of this [infection] earlier.”

After waiting 2-6 days for the antibiotics to wash out, the researchers randomly assigned 102 of these patients to take the CP101 pills orally and 96 to take placebo pills, both without bowel preparation.

The two groups were not significantly different in age, gender, comorbidities, the number of C. difficile recurrences, or the type of test used to diagnose the infection (PCR-based vs. toxin EIA-based).

After 8 weeks, 74.5% of those given the CP101 pills had not had a recurrence, compared with 61.5% of those given the placebo. The difference was just barely statistically significant (P = .0488).

Sixteen weeks later, the effect endured, with 73.5% of the CP101 group and 59.4% of the placebo group still free of recurrence. The statistical significance of the difference improved slightly (P = .0347).

Drug-related emergent adverse events were similar between the two groups: 16.3% for the CP101 group vs. 19.2% for the placebo group. These were mostly gastrointestinal symptoms, and none were serious.

Some of the patients received vancomycin as a first-line treatment for C. difficile infections, and the researchers wondered if the washout period was not sufficient to purge that antibiotic, leaving enough to interfere with the effectiveness of CP101.

Therefore, they separately analyzed 40 patients treated with fidaxomicin, which they expected to wash out more quickly. Among these patients, 81% who received CP101 were free of recurrences, at 8 weeks and 24 weeks. This compared with 42.1% of those who received the placebo, at both time points. This difference was more statistically significant (P = .0211).
 

Understanding how it works

To understand better how CP101 achieves its effects, the researchers collected stool samples from the patients and counted the number of different kinds organisms in each sample.

At baseline, the patients had about the same number, but after a week the diversity was greater in the patients treated with CP101, and that difference had increased at week 8. The researchers also found much less diversity of organisms in the stools of those patients who had recurrences of C. difficile infection.

The diversity of microbes in the successfully treated patients appeared to have been introduced by CP101. Dr. Allegretti and colleagues measured the number of organisms in the stool samples that came from CP101. They found that 96% of patients colonized by the CP101 organisms had avoided recurrence of the C. difficile infections, compared with 54.2% of those patients not colonized by these microbes.

“We now have some microbiome-based markers that show us as early as week 1 that the patient is going to be cured or not,” Dr. Allegretti said.

Based on these results, Finch plans to launch a phase 3 trial soon, she said.

The data on colonization is interesting because it has not been found with fecal microbiota transplants, said Purna Kashyap, MBBS, codirector of the Microbiome Program at the Mayo Clinic College of Medicine in Rochester, Minn., who was not involved in the study.

But to better interpret the data, it would be helpful to know more about how the placebo and CP101 groups compared at baseline with regard to medications, immunosuppression, and antibiotics used to treat the C. difficile infections, Dr. Kashyap said. He was struck by the lower cure rate in the portion of the placebo group treated with fidaxomicin.

“Overall, I think these are exciting observations based on the data but require careful review of the entire data to make sense of [them], which will happen when it goes through peer review,” he told this news organization in an email.

Several other standardized microbiota restoration products are under development, including at least two other capsules. In contrast to CP101, which is made up of whole stool, VE303 (Vedanta Biosciences) is a “rationally defined bacterial consortium,” and SER-109 (Seres Therapeutics) is a “consortium of highly purified Firmicutes spores.” VE303 has completed a phase 2 trial, and SER-109 has completed a phase 3 trial.

Dr. Allegretti is a consultant for Finch Therapeutics, which funded the trial. Dr. Kashyap has disclosed no relevant financial relationships.
 

A version of this article first appeared on Medscape.com.

LAS VEGAS – An oral treatment with freeze-dried human stool can successfully treat Clostridioides difficile infections by increasing the diversity of microorganisms in the colon, researchers say.

CP101, under development by Finch Therapeutics, proved more effective than a placebo in preventing recurrent infections for up to 24 weeks.

The CP101 capsules contain a powder of freeze-dried human stools from screened donors. They restore natural diversity that has been disrupted by antibiotics, said Jessica Allegretti, MD, MPH a gastroenterologist at Brigham and Women’s Hospital in Boston.

The treatment offers an alternative to fecal microbiota transplant, which can effectively treat antibiotic-resistant C. difficile infections but is difficult to standardize and administer – and doesn’t have full approval from the U.S. Food and Drug Administration, she added.

“I think this marks a moment in this space where we’re going to have better, safer, and more available options for patients,” she said in an interview. “It’s exciting.”

Dr. Allegretti is an author on three presentations of results from PRISM3, a phase 2 trial of CP101. They will be presented this week at the annual meeting of the American College of Gastroenterology. These results extend out to 24 weeks, whereas the 8-week results of this trial were presented a year ago at the same meeting.
 

Study details

The study enrolled 198 people who received antibiotics for recurrent C. difficile infections. Some patients had two or more recurrences, while others had only one recurrence but were 65 years of age or older.

“That was a unique aspect of this study, to see the effect of bringing a therapy like CP101 earlier in the treatment paradigm,” said Dr. Allegretti. “You can imagine for an older, frail, or more fragile patient that you would want to get rid of this [infection] earlier.”

After waiting 2-6 days for the antibiotics to wash out, the researchers randomly assigned 102 of these patients to take the CP101 pills orally and 96 to take placebo pills, both without bowel preparation.

The two groups were not significantly different in age, gender, comorbidities, the number of C. difficile recurrences, or the type of test used to diagnose the infection (PCR-based vs. toxin EIA-based).

After 8 weeks, 74.5% of those given the CP101 pills had not had a recurrence, compared with 61.5% of those given the placebo. The difference was just barely statistically significant (P = .0488).

Sixteen weeks later, the effect endured, with 73.5% of the CP101 group and 59.4% of the placebo group still free of recurrence. The statistical significance of the difference improved slightly (P = .0347).

Drug-related emergent adverse events were similar between the two groups: 16.3% for the CP101 group vs. 19.2% for the placebo group. These were mostly gastrointestinal symptoms, and none were serious.

Some of the patients received vancomycin as a first-line treatment for C. difficile infections, and the researchers wondered if the washout period was not sufficient to purge that antibiotic, leaving enough to interfere with the effectiveness of CP101.

Therefore, they separately analyzed 40 patients treated with fidaxomicin, which they expected to wash out more quickly. Among these patients, 81% who received CP101 were free of recurrences, at 8 weeks and 24 weeks. This compared with 42.1% of those who received the placebo, at both time points. This difference was more statistically significant (P = .0211).
 

Understanding how it works

To understand better how CP101 achieves its effects, the researchers collected stool samples from the patients and counted the number of different kinds organisms in each sample.

At baseline, the patients had about the same number, but after a week the diversity was greater in the patients treated with CP101, and that difference had increased at week 8. The researchers also found much less diversity of organisms in the stools of those patients who had recurrences of C. difficile infection.

The diversity of microbes in the successfully treated patients appeared to have been introduced by CP101. Dr. Allegretti and colleagues measured the number of organisms in the stool samples that came from CP101. They found that 96% of patients colonized by the CP101 organisms had avoided recurrence of the C. difficile infections, compared with 54.2% of those patients not colonized by these microbes.

“We now have some microbiome-based markers that show us as early as week 1 that the patient is going to be cured or not,” Dr. Allegretti said.

Based on these results, Finch plans to launch a phase 3 trial soon, she said.

The data on colonization is interesting because it has not been found with fecal microbiota transplants, said Purna Kashyap, MBBS, codirector of the Microbiome Program at the Mayo Clinic College of Medicine in Rochester, Minn., who was not involved in the study.

But to better interpret the data, it would be helpful to know more about how the placebo and CP101 groups compared at baseline with regard to medications, immunosuppression, and antibiotics used to treat the C. difficile infections, Dr. Kashyap said. He was struck by the lower cure rate in the portion of the placebo group treated with fidaxomicin.

“Overall, I think these are exciting observations based on the data but require careful review of the entire data to make sense of [them], which will happen when it goes through peer review,” he told this news organization in an email.

Several other standardized microbiota restoration products are under development, including at least two other capsules. In contrast to CP101, which is made up of whole stool, VE303 (Vedanta Biosciences) is a “rationally defined bacterial consortium,” and SER-109 (Seres Therapeutics) is a “consortium of highly purified Firmicutes spores.” VE303 has completed a phase 2 trial, and SER-109 has completed a phase 3 trial.

Dr. Allegretti is a consultant for Finch Therapeutics, which funded the trial. Dr. Kashyap has disclosed no relevant financial relationships.
 

A version of this article first appeared on Medscape.com.

Baby formula trials are not reliable, and have an “almost universal lack of transparency” which could undermine breastfeeding, according to the results of a systematic review published in BMJ. The findings underscore the need for significant change in the way such trials are conducted and reported, concluded lead author Bartosz Helfer, PhD, of the National Heart and Lung Institute at Imperial College London and the University of Wroclaw (Poland) Institute of Psychology and his coauthors. Citing a high risk of bias, selective reporting, and “almost universally favourable conclusions,” the international team of investigators suggested “some trials might have a marketing aim and no robust scientific aim,” concluding “much of the recent information generated about formula products might be misleading.”

The review included a detailed evaluation of 125 trials published since 2015, that compared at least two formula products in 23,757 children less than 3 years of age. The trials were evaluated for how they were conducted and reported, with specific attention paid to their risk of bias and risk of undermining breastfeeding.

Using the Cochrane risk-of-bias assessment 2.0 (ROB2), the analysis found that risk of bias was high in 80% of trials “usually because of inappropriate exclusions of participants from the analysis, and selective reporting,” the investigators noted. “This lack of transparency was complemented by favourable conclusions in more than 90% of recent trials, and evidence of publication bias in recent superiority trials.”

When conflict of interest was assessed, the analysis showed 84% of the trials received support from the formula milk industry, and of these, 77% had at least one author affiliated with a formula company. Overall, only 14% of trials had a low level of conflicts of interest according to the investigators’ definition “that the main source of funding had no commercial interest in the outcome of the trial and all of the authors of the study declared no financial ties to an entity with a commercial interest in the outcome of the trial.”

The investigators also noted that, by providing free formula to parents of breastfed or mixed-fed infants, many of the trials may have contravened the International Code of Marketing of Breast-milk Substitutes – an international agreement used to protect breastfeeding and limit the marketing of formula. “Claims arising from formula trials can contribute to formula marketing by narrowing the perceived benefits of breast milk over formula for consumers,” they wrote, calling for “improved oversight, conduct, and reporting of formula trials to ensure they provide a rigorous evidence base to inform nutrition in infants and young children.”

Asked to comment, Jennifer L. Pomeranz, JD, MPH, who was not involved in the study, told this publication the findings are “very concerning.” Ms. Pomeranz of New York University’s School of Global Public Health, recently reported similar issues in an analysis of baby formula websites. “Infant formula labels in the U.S. are adorned with a plethora of unsupported health and nutrition-related claims, including unregulated structure/function claims and breast milk comparison claims,” she said. “Moreover, infant formula marketing uses these claims to convince new parents that infant formula is necessary and even better for their infants than breast milk. Our research indicates that parents believe the popular claims made by formula companies and some even believe that infant formula is better for their child’s development than breast milk. If these claims are based on trials with no robust scientific basis, as the study suggests might be the case, then they are certainly false, deceptive, unfair, and misleading.”

Ms. Pomeranz called for the Food and Drug Administration’s regulation of infant formula labels, adding that “Congress should grant the FDA the explicit authority to require evidence to support structure/function claims on infant formula and prohibit breast milk comparison claims. ... The Federal Trade Commission and state attorneys general should bring actions against infant formula manufacturers for false and deceptive claims made in marketing materials,” she added.

Jack Newman, MD, another expert not involved in the study told this publication that the findings show how most formula studies “are essentially another marketing tool of the formula companies and are aimed at a very susceptible audience – health care professionals.” According to Dr. Newman, chief pediatrician and founder of the Newman Breastfeeding Clinic in Toronto and a former UNICEF consultant for the Baby Friendly Hospital Initiative, “health care professionals often like to believe they are immune to formula company marketing – yet this study shows that, even if they believed they were relying on scientific evidence, they were in fact being influenced toward formula feeding by studies that are biased, unreliable, and designed to promote formula to begin with.”

However, Stewart Forsyth, MD, honorary professor in child health, at the University of Dundee (Scotland) and retired consultant pediatrician and medical director at NHS Tayside, Scotland, cautioned that this is a delicate issue on all sides of the debate. The possibility of bias “is a potential issue with all aspects of research but is heightened in relation to infant feeding research because of the longstanding conflict involving the World Health Organisation, breastfeeding activist groups, and the infant formula industry, and as a consequence, all three of these organisations frequently resort to overinterpreting the data to favour their arguments,” he told this publication. An example is the suggestion that formula trials might contravene the International Code of Marketing of Breastmilk Substitutes because they provide free formula to participants. “Since when do participants in a research study have to pay for the intervention that is being studied?” he asked.

Dr. Stewart advised three key considerations “to mitigate the damaging effects that this type of inappropriate and misleading information may have on policy, practice, and engagement with parents.” First, it must be acknowledged that there is need for “a product that will provide a safety net for infants who are not offered breast milk,” he said. “It has been argued that to determine optimum nutrient requirements in infants and young children collaboration with nutrition companies is required.” Second, “all researchers need to comply with regulations relating to scientific methods, ethical standards, and financial diligence.” And finally, “there needs to be more effective planning and coordination of research activities to ensure that lessons are learned from the many studies that have design and methodological deficiencies.”

The study was funded by Imperial Health Charity. Ms. Pomeranz and Dr. Newman reported no conflicts of interest. Dr. Forsyth has undertaken consultancy work with governments, health care institutions, academia, and industry and has received research grants and honoraria from governments, charitable organizations and industry, including infant formula companies.

Senior author Robert J. Boyle, MBChB, MRCP, PhD, received personal fees from Cochrane, DBV Technologies, and Prota Therapeutics, and from expert witness work in cases of food anaphylaxis and class actions related to infant formula health claims, outside the submitted work, and received personal fees from Public Health England as a member of the UK Nutrition and Health Claims Committee and the Maternal and Child Nutrition Subgroup of the Scientific Advisory Committee on Nutrition. Coauthor Jo Leonardi-Bee, MSc, PhD, received fees from Danone Nutricia Research and the Food Standards Agency, outside of the submitted work.

Baby formula trials are not reliable, and have an “almost universal lack of transparency” which could undermine breastfeeding, according to the results of a systematic review published in BMJ. The findings underscore the need for significant change in the way such trials are conducted and reported, concluded lead author Bartosz Helfer, PhD, of the National Heart and Lung Institute at Imperial College London and the University of Wroclaw (Poland) Institute of Psychology and his coauthors. Citing a high risk of bias, selective reporting, and “almost universally favourable conclusions,” the international team of investigators suggested “some trials might have a marketing aim and no robust scientific aim,” concluding “much of the recent information generated about formula products might be misleading.”

The review included a detailed evaluation of 125 trials published since 2015, that compared at least two formula products in 23,757 children less than 3 years of age. The trials were evaluated for how they were conducted and reported, with specific attention paid to their risk of bias and risk of undermining breastfeeding.

Using the Cochrane risk-of-bias assessment 2.0 (ROB2), the analysis found that risk of bias was high in 80% of trials “usually because of inappropriate exclusions of participants from the analysis, and selective reporting,” the investigators noted. “This lack of transparency was complemented by favourable conclusions in more than 90% of recent trials, and evidence of publication bias in recent superiority trials.”

When conflict of interest was assessed, the analysis showed 84% of the trials received support from the formula milk industry, and of these, 77% had at least one author affiliated with a formula company. Overall, only 14% of trials had a low level of conflicts of interest according to the investigators’ definition “that the main source of funding had no commercial interest in the outcome of the trial and all of the authors of the study declared no financial ties to an entity with a commercial interest in the outcome of the trial.”

The investigators also noted that, by providing free formula to parents of breastfed or mixed-fed infants, many of the trials may have contravened the International Code of Marketing of Breast-milk Substitutes – an international agreement used to protect breastfeeding and limit the marketing of formula. “Claims arising from formula trials can contribute to formula marketing by narrowing the perceived benefits of breast milk over formula for consumers,” they wrote, calling for “improved oversight, conduct, and reporting of formula trials to ensure they provide a rigorous evidence base to inform nutrition in infants and young children.”

Asked to comment, Jennifer L. Pomeranz, JD, MPH, who was not involved in the study, told this publication the findings are “very concerning.” Ms. Pomeranz of New York University’s School of Global Public Health, recently reported similar issues in an analysis of baby formula websites. “Infant formula labels in the U.S. are adorned with a plethora of unsupported health and nutrition-related claims, including unregulated structure/function claims and breast milk comparison claims,” she said. “Moreover, infant formula marketing uses these claims to convince new parents that infant formula is necessary and even better for their infants than breast milk. Our research indicates that parents believe the popular claims made by formula companies and some even believe that infant formula is better for their child’s development than breast milk. If these claims are based on trials with no robust scientific basis, as the study suggests might be the case, then they are certainly false, deceptive, unfair, and misleading.”

Ms. Pomeranz called for the Food and Drug Administration’s regulation of infant formula labels, adding that “Congress should grant the FDA the explicit authority to require evidence to support structure/function claims on infant formula and prohibit breast milk comparison claims. ... The Federal Trade Commission and state attorneys general should bring actions against infant formula manufacturers for false and deceptive claims made in marketing materials,” she added.

Jack Newman, MD, another expert not involved in the study told this publication that the findings show how most formula studies “are essentially another marketing tool of the formula companies and are aimed at a very susceptible audience – health care professionals.” According to Dr. Newman, chief pediatrician and founder of the Newman Breastfeeding Clinic in Toronto and a former UNICEF consultant for the Baby Friendly Hospital Initiative, “health care professionals often like to believe they are immune to formula company marketing – yet this study shows that, even if they believed they were relying on scientific evidence, they were in fact being influenced toward formula feeding by studies that are biased, unreliable, and designed to promote formula to begin with.”

However, Stewart Forsyth, MD, honorary professor in child health, at the University of Dundee (Scotland) and retired consultant pediatrician and medical director at NHS Tayside, Scotland, cautioned that this is a delicate issue on all sides of the debate. The possibility of bias “is a potential issue with all aspects of research but is heightened in relation to infant feeding research because of the longstanding conflict involving the World Health Organisation, breastfeeding activist groups, and the infant formula industry, and as a consequence, all three of these organisations frequently resort to overinterpreting the data to favour their arguments,” he told this publication. An example is the suggestion that formula trials might contravene the International Code of Marketing of Breastmilk Substitutes because they provide free formula to participants. “Since when do participants in a research study have to pay for the intervention that is being studied?” he asked.

Dr. Stewart advised three key considerations “to mitigate the damaging effects that this type of inappropriate and misleading information may have on policy, practice, and engagement with parents.” First, it must be acknowledged that there is need for “a product that will provide a safety net for infants who are not offered breast milk,” he said. “It has been argued that to determine optimum nutrient requirements in infants and young children collaboration with nutrition companies is required.” Second, “all researchers need to comply with regulations relating to scientific methods, ethical standards, and financial diligence.” And finally, “there needs to be more effective planning and coordination of research activities to ensure that lessons are learned from the many studies that have design and methodological deficiencies.”

The study was funded by Imperial Health Charity. Ms. Pomeranz and Dr. Newman reported no conflicts of interest. Dr. Forsyth has undertaken consultancy work with governments, health care institutions, academia, and industry and has received research grants and honoraria from governments, charitable organizations and industry, including infant formula companies.

Senior author Robert J. Boyle, MBChB, MRCP, PhD, received personal fees from Cochrane, DBV Technologies, and Prota Therapeutics, and from expert witness work in cases of food anaphylaxis and class actions related to infant formula health claims, outside the submitted work, and received personal fees from Public Health England as a member of the UK Nutrition and Health Claims Committee and the Maternal and Child Nutrition Subgroup of the Scientific Advisory Committee on Nutrition. Coauthor Jo Leonardi-Bee, MSc, PhD, received fees from Danone Nutricia Research and the Food Standards Agency, outside of the submitted work.

Baby formula trials are not reliable, and have an “almost universal lack of transparency” which could undermine breastfeeding, according to the results of a systematic review published in BMJ. The findings underscore the need for significant change in the way such trials are conducted and reported, concluded lead author Bartosz Helfer, PhD, of the National Heart and Lung Institute at Imperial College London and the University of Wroclaw (Poland) Institute of Psychology and his coauthors. Citing a high risk of bias, selective reporting, and “almost universally favourable conclusions,” the international team of investigators suggested “some trials might have a marketing aim and no robust scientific aim,” concluding “much of the recent information generated about formula products might be misleading.”

The review included a detailed evaluation of 125 trials published since 2015, that compared at least two formula products in 23,757 children less than 3 years of age. The trials were evaluated for how they were conducted and reported, with specific attention paid to their risk of bias and risk of undermining breastfeeding.

Using the Cochrane risk-of-bias assessment 2.0 (ROB2), the analysis found that risk of bias was high in 80% of trials “usually because of inappropriate exclusions of participants from the analysis, and selective reporting,” the investigators noted. “This lack of transparency was complemented by favourable conclusions in more than 90% of recent trials, and evidence of publication bias in recent superiority trials.”

When conflict of interest was assessed, the analysis showed 84% of the trials received support from the formula milk industry, and of these, 77% had at least one author affiliated with a formula company. Overall, only 14% of trials had a low level of conflicts of interest according to the investigators’ definition “that the main source of funding had no commercial interest in the outcome of the trial and all of the authors of the study declared no financial ties to an entity with a commercial interest in the outcome of the trial.”

The investigators also noted that, by providing free formula to parents of breastfed or mixed-fed infants, many of the trials may have contravened the International Code of Marketing of Breast-milk Substitutes – an international agreement used to protect breastfeeding and limit the marketing of formula. “Claims arising from formula trials can contribute to formula marketing by narrowing the perceived benefits of breast milk over formula for consumers,” they wrote, calling for “improved oversight, conduct, and reporting of formula trials to ensure they provide a rigorous evidence base to inform nutrition in infants and young children.”

Asked to comment, Jennifer L. Pomeranz, JD, MPH, who was not involved in the study, told this publication the findings are “very concerning.” Ms. Pomeranz of New York University’s School of Global Public Health, recently reported similar issues in an analysis of baby formula websites. “Infant formula labels in the U.S. are adorned with a plethora of unsupported health and nutrition-related claims, including unregulated structure/function claims and breast milk comparison claims,” she said. “Moreover, infant formula marketing uses these claims to convince new parents that infant formula is necessary and even better for their infants than breast milk. Our research indicates that parents believe the popular claims made by formula companies and some even believe that infant formula is better for their child’s development than breast milk. If these claims are based on trials with no robust scientific basis, as the study suggests might be the case, then they are certainly false, deceptive, unfair, and misleading.”

Ms. Pomeranz called for the Food and Drug Administration’s regulation of infant formula labels, adding that “Congress should grant the FDA the explicit authority to require evidence to support structure/function claims on infant formula and prohibit breast milk comparison claims. ... The Federal Trade Commission and state attorneys general should bring actions against infant formula manufacturers for false and deceptive claims made in marketing materials,” she added.

Jack Newman, MD, another expert not involved in the study told this publication that the findings show how most formula studies “are essentially another marketing tool of the formula companies and are aimed at a very susceptible audience – health care professionals.” According to Dr. Newman, chief pediatrician and founder of the Newman Breastfeeding Clinic in Toronto and a former UNICEF consultant for the Baby Friendly Hospital Initiative, “health care professionals often like to believe they are immune to formula company marketing – yet this study shows that, even if they believed they were relying on scientific evidence, they were in fact being influenced toward formula feeding by studies that are biased, unreliable, and designed to promote formula to begin with.”

However, Stewart Forsyth, MD, honorary professor in child health, at the University of Dundee (Scotland) and retired consultant pediatrician and medical director at NHS Tayside, Scotland, cautioned that this is a delicate issue on all sides of the debate. The possibility of bias “is a potential issue with all aspects of research but is heightened in relation to infant feeding research because of the longstanding conflict involving the World Health Organisation, breastfeeding activist groups, and the infant formula industry, and as a consequence, all three of these organisations frequently resort to overinterpreting the data to favour their arguments,” he told this publication. An example is the suggestion that formula trials might contravene the International Code of Marketing of Breastmilk Substitutes because they provide free formula to participants. “Since when do participants in a research study have to pay for the intervention that is being studied?” he asked.

Dr. Stewart advised three key considerations “to mitigate the damaging effects that this type of inappropriate and misleading information may have on policy, practice, and engagement with parents.” First, it must be acknowledged that there is need for “a product that will provide a safety net for infants who are not offered breast milk,” he said. “It has been argued that to determine optimum nutrient requirements in infants and young children collaboration with nutrition companies is required.” Second, “all researchers need to comply with regulations relating to scientific methods, ethical standards, and financial diligence.” And finally, “there needs to be more effective planning and coordination of research activities to ensure that lessons are learned from the many studies that have design and methodological deficiencies.”

The study was funded by Imperial Health Charity. Ms. Pomeranz and Dr. Newman reported no conflicts of interest. Dr. Forsyth has undertaken consultancy work with governments, health care institutions, academia, and industry and has received research grants and honoraria from governments, charitable organizations and industry, including infant formula companies.

Senior author Robert J. Boyle, MBChB, MRCP, PhD, received personal fees from Cochrane, DBV Technologies, and Prota Therapeutics, and from expert witness work in cases of food anaphylaxis and class actions related to infant formula health claims, outside the submitted work, and received personal fees from Public Health England as a member of the UK Nutrition and Health Claims Committee and the Maternal and Child Nutrition Subgroup of the Scientific Advisory Committee on Nutrition. Coauthor Jo Leonardi-Bee, MSc, PhD, received fees from Danone Nutricia Research and the Food Standards Agency, outside of the submitted work.

While type 2 diabetes is associated with a greater risk for cardiovascular events than type 1 diabetes, the latter is more associated with chronic kidney complications, according to data from a French observational study.

That’s not to say that type 1 diabetes isn’t also associated with poor heart health that is of concern, according to Denis Angoulvant, MD, of Tours (France) Regional University Hospital and Trousseau Hospital in Paris.

“The difference is that, in the middle or older ages, we suddenly see a surge of cardiovascular events in type 1 diabetic patients,” he said at the annual meeting of the European Association for the Study of Diabetes. “As a cardiologist, I must say that we are barely see these patients ahead of those complications, so we advocate that there’s a gap to be filled here to prevent these events in these patients.”

Few studies have looked at the comparative risks for cardiovascular and renal outcomes between patients with type 1 and type 2 diabetes, Dr. Angoulvant said, so the aim of the study he presented was to look at this in more detail.
 

Comparing cardiovascular and renal outcomes

Data from the French hospital discharge database (PMSI), which covers more than 98% of the country’s population, were used to find all adults with type 1 or type 2 diabetes who had at least 5 years of follow-up data starting from 2013.

Not surprisingly, there were eight times as many individuals with type 2 diabetes (425,207) than those with type 1 diabetes (50,623), and patients with type 2 diabetes tended to be older than those with type 1 diabetes (mean age, 68.6 vs. 61.4 years).

There were many significant differences between the two groups of patients in terms of clinical variables, such as patients with type 2 diabetes having more cardiovascular risk factors or preexisting heart problems, and those with type 1 diabetes more likely to have diabetic eye disease.

Indeed, Dr. Angoulvant pointed out that those with type 2 diabetes were significantly more likely (all P < .0001) than those with type 1 diabetes to have: hypertension (70.8% vs. 50.5%), heart failure (35.7% vs. 16.4%), valvular heart disease (7.2% vs. 3.5%), dilated cardiomyopathy (5.5% vs. 2.7%), coronary artery disease (27.6 vs. 18.6%), previous MI (3.0% vs. 2.4%), peripheral vascular disease (22.0% vs. 15.5%), and ischemic stroke (3.3 vs. 2.2%).

“Regarding more specific microvascular diabetic complications, we had a higher incidence of chronic kidney disease in type 2 diabetes patients [10.2% vs. 9.1%], but a higher incidence of diabetic retinopathy in type 1 diabetes patients [6.6% vs. 12.2%],” Dr. Angoulvant said.

Considering more than 2 million person-years of follow-up, the annual rates of MI, new-onset heart failure, ischemic stroke, and chronic kidney disease for the whole study population were respective 1.4%, 5.4%, 1.2%, and 3.4%. The annual rates for death from any cause was 9.7%, and for a cardiovascular reason was 2.4%.
 

Cardiovascular disease prevalence and event rates

The mean follow-up period was 4.3 years, and over this time the age- and sex-adjusted prevalence of cardiovascular disease was found to be highest in individuals with type 2 diabetes, especially after the age of 40 years.

Looking at the rates of different cardiovascular events showed that both younger (18-29 years) and older (60+ years) people with type 1 diabetes had a 1.2-fold higher risk for MI than similarly aged individuals with type 2 diabetes.

Furthermore, younger and older type 1 diabetes individuals had a 1.1- to 1.4-fold greater risk of new-onset heart failure than those with type 2 diabetes.

“Interestingly, regarding the incidence of ischemic stroke in our population, we found no significant difference between patients with type 1 diabetes, and patients with type 2 diabetes,” Dr. Angoulvant said.
 

Chronic kidney disease and risk for death

Chronic kidney disease was most common in individuals with type 1 diabetes who were aged between 18 and 69 years, with a greater prevalence also seen in those with type 2 diabetes only after age 80.

The risk of new chronic kidney disease was significantly increased in patients with type 1 diabetes, compared with patients with type 2 diabetes, with a 1.1- to 2.4-fold increase seen, first in individuals aged 18-49 years, and then again after the age of 60 years.

Dr. Angoulvant reported that the risk of dying from any cause was 1.1-fold higher in people with type 1 diabetes, compared with those with type 2 diabetes, but after the age of 60 years.

The risk of death from cardiovascular events was also increased in people with type 1 diabetes, but between the ages of 60 and 69 years.

Asked what his take-home message might be, Dr. Angoulvant stressed the importance of heart failure, in all patients with diabetes but particularly in those with type 1 diabetes.

“I think there is room for improvement in terms of assessing who is going to have heart failure, how to assess heart failure, and more importantly, how to prevent heart failure,” perhaps by “introducing those drugs that have shown tremendous benefit regarding hospitalization, such as [sodium-glucose transporter 2] inhibitors” in patients with type 1 diabetes ahead of the events, he said.

Dr. Angoulvant had no conflicts of interest to disclose.

While type 2 diabetes is associated with a greater risk for cardiovascular events than type 1 diabetes, the latter is more associated with chronic kidney complications, according to data from a French observational study.

That’s not to say that type 1 diabetes isn’t also associated with poor heart health that is of concern, according to Denis Angoulvant, MD, of Tours (France) Regional University Hospital and Trousseau Hospital in Paris.

“The difference is that, in the middle or older ages, we suddenly see a surge of cardiovascular events in type 1 diabetic patients,” he said at the annual meeting of the European Association for the Study of Diabetes. “As a cardiologist, I must say that we are barely see these patients ahead of those complications, so we advocate that there’s a gap to be filled here to prevent these events in these patients.”

Few studies have looked at the comparative risks for cardiovascular and renal outcomes between patients with type 1 and type 2 diabetes, Dr. Angoulvant said, so the aim of the study he presented was to look at this in more detail.
 

Comparing cardiovascular and renal outcomes

Data from the French hospital discharge database (PMSI), which covers more than 98% of the country’s population, were used to find all adults with type 1 or type 2 diabetes who had at least 5 years of follow-up data starting from 2013.

Not surprisingly, there were eight times as many individuals with type 2 diabetes (425,207) than those with type 1 diabetes (50,623), and patients with type 2 diabetes tended to be older than those with type 1 diabetes (mean age, 68.6 vs. 61.4 years).

There were many significant differences between the two groups of patients in terms of clinical variables, such as patients with type 2 diabetes having more cardiovascular risk factors or preexisting heart problems, and those with type 1 diabetes more likely to have diabetic eye disease.

Indeed, Dr. Angoulvant pointed out that those with type 2 diabetes were significantly more likely (all P < .0001) than those with type 1 diabetes to have: hypertension (70.8% vs. 50.5%), heart failure (35.7% vs. 16.4%), valvular heart disease (7.2% vs. 3.5%), dilated cardiomyopathy (5.5% vs. 2.7%), coronary artery disease (27.6 vs. 18.6%), previous MI (3.0% vs. 2.4%), peripheral vascular disease (22.0% vs. 15.5%), and ischemic stroke (3.3 vs. 2.2%).

“Regarding more specific microvascular diabetic complications, we had a higher incidence of chronic kidney disease in type 2 diabetes patients [10.2% vs. 9.1%], but a higher incidence of diabetic retinopathy in type 1 diabetes patients [6.6% vs. 12.2%],” Dr. Angoulvant said.

Considering more than 2 million person-years of follow-up, the annual rates of MI, new-onset heart failure, ischemic stroke, and chronic kidney disease for the whole study population were respective 1.4%, 5.4%, 1.2%, and 3.4%. The annual rates for death from any cause was 9.7%, and for a cardiovascular reason was 2.4%.
 

Cardiovascular disease prevalence and event rates

The mean follow-up period was 4.3 years, and over this time the age- and sex-adjusted prevalence of cardiovascular disease was found to be highest in individuals with type 2 diabetes, especially after the age of 40 years.

Looking at the rates of different cardiovascular events showed that both younger (18-29 years) and older (60+ years) people with type 1 diabetes had a 1.2-fold higher risk for MI than similarly aged individuals with type 2 diabetes.

Furthermore, younger and older type 1 diabetes individuals had a 1.1- to 1.4-fold greater risk of new-onset heart failure than those with type 2 diabetes.

“Interestingly, regarding the incidence of ischemic stroke in our population, we found no significant difference between patients with type 1 diabetes, and patients with type 2 diabetes,” Dr. Angoulvant said.
 

Chronic kidney disease and risk for death

Chronic kidney disease was most common in individuals with type 1 diabetes who were aged between 18 and 69 years, with a greater prevalence also seen in those with type 2 diabetes only after age 80.

The risk of new chronic kidney disease was significantly increased in patients with type 1 diabetes, compared with patients with type 2 diabetes, with a 1.1- to 2.4-fold increase seen, first in individuals aged 18-49 years, and then again after the age of 60 years.

Dr. Angoulvant reported that the risk of dying from any cause was 1.1-fold higher in people with type 1 diabetes, compared with those with type 2 diabetes, but after the age of 60 years.

The risk of death from cardiovascular events was also increased in people with type 1 diabetes, but between the ages of 60 and 69 years.

Asked what his take-home message might be, Dr. Angoulvant stressed the importance of heart failure, in all patients with diabetes but particularly in those with type 1 diabetes.

“I think there is room for improvement in terms of assessing who is going to have heart failure, how to assess heart failure, and more importantly, how to prevent heart failure,” perhaps by “introducing those drugs that have shown tremendous benefit regarding hospitalization, such as [sodium-glucose transporter 2] inhibitors” in patients with type 1 diabetes ahead of the events, he said.

Dr. Angoulvant had no conflicts of interest to disclose.

While type 2 diabetes is associated with a greater risk for cardiovascular events than type 1 diabetes, the latter is more associated with chronic kidney complications, according to data from a French observational study.

That’s not to say that type 1 diabetes isn’t also associated with poor heart health that is of concern, according to Denis Angoulvant, MD, of Tours (France) Regional University Hospital and Trousseau Hospital in Paris.

“The difference is that, in the middle or older ages, we suddenly see a surge of cardiovascular events in type 1 diabetic patients,” he said at the annual meeting of the European Association for the Study of Diabetes. “As a cardiologist, I must say that we are barely see these patients ahead of those complications, so we advocate that there’s a gap to be filled here to prevent these events in these patients.”

Few studies have looked at the comparative risks for cardiovascular and renal outcomes between patients with type 1 and type 2 diabetes, Dr. Angoulvant said, so the aim of the study he presented was to look at this in more detail.
 

Comparing cardiovascular and renal outcomes

Data from the French hospital discharge database (PMSI), which covers more than 98% of the country’s population, were used to find all adults with type 1 or type 2 diabetes who had at least 5 years of follow-up data starting from 2013.

Not surprisingly, there were eight times as many individuals with type 2 diabetes (425,207) than those with type 1 diabetes (50,623), and patients with type 2 diabetes tended to be older than those with type 1 diabetes (mean age, 68.6 vs. 61.4 years).

There were many significant differences between the two groups of patients in terms of clinical variables, such as patients with type 2 diabetes having more cardiovascular risk factors or preexisting heart problems, and those with type 1 diabetes more likely to have diabetic eye disease.

Indeed, Dr. Angoulvant pointed out that those with type 2 diabetes were significantly more likely (all P < .0001) than those with type 1 diabetes to have: hypertension (70.8% vs. 50.5%), heart failure (35.7% vs. 16.4%), valvular heart disease (7.2% vs. 3.5%), dilated cardiomyopathy (5.5% vs. 2.7%), coronary artery disease (27.6 vs. 18.6%), previous MI (3.0% vs. 2.4%), peripheral vascular disease (22.0% vs. 15.5%), and ischemic stroke (3.3 vs. 2.2%).

“Regarding more specific microvascular diabetic complications, we had a higher incidence of chronic kidney disease in type 2 diabetes patients [10.2% vs. 9.1%], but a higher incidence of diabetic retinopathy in type 1 diabetes patients [6.6% vs. 12.2%],” Dr. Angoulvant said.

Considering more than 2 million person-years of follow-up, the annual rates of MI, new-onset heart failure, ischemic stroke, and chronic kidney disease for the whole study population were respective 1.4%, 5.4%, 1.2%, and 3.4%. The annual rates for death from any cause was 9.7%, and for a cardiovascular reason was 2.4%.
 

Cardiovascular disease prevalence and event rates

The mean follow-up period was 4.3 years, and over this time the age- and sex-adjusted prevalence of cardiovascular disease was found to be highest in individuals with type 2 diabetes, especially after the age of 40 years.

Looking at the rates of different cardiovascular events showed that both younger (18-29 years) and older (60+ years) people with type 1 diabetes had a 1.2-fold higher risk for MI than similarly aged individuals with type 2 diabetes.

Furthermore, younger and older type 1 diabetes individuals had a 1.1- to 1.4-fold greater risk of new-onset heart failure than those with type 2 diabetes.

“Interestingly, regarding the incidence of ischemic stroke in our population, we found no significant difference between patients with type 1 diabetes, and patients with type 2 diabetes,” Dr. Angoulvant said.
 

Chronic kidney disease and risk for death

Chronic kidney disease was most common in individuals with type 1 diabetes who were aged between 18 and 69 years, with a greater prevalence also seen in those with type 2 diabetes only after age 80.

The risk of new chronic kidney disease was significantly increased in patients with type 1 diabetes, compared with patients with type 2 diabetes, with a 1.1- to 2.4-fold increase seen, first in individuals aged 18-49 years, and then again after the age of 60 years.

Dr. Angoulvant reported that the risk of dying from any cause was 1.1-fold higher in people with type 1 diabetes, compared with those with type 2 diabetes, but after the age of 60 years.

The risk of death from cardiovascular events was also increased in people with type 1 diabetes, but between the ages of 60 and 69 years.

Asked what his take-home message might be, Dr. Angoulvant stressed the importance of heart failure, in all patients with diabetes but particularly in those with type 1 diabetes.

“I think there is room for improvement in terms of assessing who is going to have heart failure, how to assess heart failure, and more importantly, how to prevent heart failure,” perhaps by “introducing those drugs that have shown tremendous benefit regarding hospitalization, such as [sodium-glucose transporter 2] inhibitors” in patients with type 1 diabetes ahead of the events, he said.

Dr. Angoulvant had no conflicts of interest to disclose.

About 36% of transgender persons had undergone a dermatologic procedure, with hair removal by far the most common, according to the results of a recent survey.

Transfeminine persons – those assigned male at birth – were much more likely to report a previous dermatologic procedure, compared with transmasculine respondents, by a margin of 64.9%-7.5%, Laura Ragmanauskaite, MD, and associates reported.

“Hair removal was the most frequently reported procedure type, with electrolysis being more common than laser hair removal,” they said, noting that “previous research on hair removal treatments among gender minority persons did not detect differences in the use of electrolysis and laser hair removal.”

Just under one-third of all respondents (32.9%) said that they had undergone electrolysis and 4.6% reported previous laser hair removal. For electrolysis, that works out to 59.4% of transfeminine and 6.1% of transmasculine respondents, while 9.1% of all transfeminine and no transmasculine persons had received laser hair removal, Dr. Ragmanauskaite of the department of dermatology, Emory University, Atlanta, and her coauthors said.

Those who had undergone gender-affirming surgery were significantly more likely to report electrolysis (78.6%) than were persons who had received no gender-affirming surgery or hormone therapy alone (47.4%), a statistically significant difference (P < .01). All of the other, less common procedures included in the online survey – 696 responses were received from 350 transfeminine and 346 transmasculine persons participating in the Study of Transition, Outcomes, and Gender – were reported more often by the transfeminine respondents. The procedure with the closest gender distribution was body contouring, reported by nine transfeminine and six transmasculine persons, the researchers said.

Use of dermal fillers was even less common (2.8% among all respondents, all transfeminine persons), with just 11 reporting having received silicone and 8 reporting having received collagen, although the survey did not ask about how the injections were obtained. In a previous study, the prevalence of illicit filler injection in transgender women was 16.9%, they pointed out.

These types of noninvasive, gender-affirming procedures “may contribute to higher levels of self-confidence and [reduce] gender dysphoria. Future studies should examine motivations, barriers, and optimal timing” for such procedures in transgender persons, Dr. Ragmanauskaite and associates wrote.

The authors reported that they had no relevant disclosures.

[email protected]

About 36% of transgender persons had undergone a dermatologic procedure, with hair removal by far the most common, according to the results of a recent survey.

Transfeminine persons – those assigned male at birth – were much more likely to report a previous dermatologic procedure, compared with transmasculine respondents, by a margin of 64.9%-7.5%, Laura Ragmanauskaite, MD, and associates reported.

“Hair removal was the most frequently reported procedure type, with electrolysis being more common than laser hair removal,” they said, noting that “previous research on hair removal treatments among gender minority persons did not detect differences in the use of electrolysis and laser hair removal.”

Just under one-third of all respondents (32.9%) said that they had undergone electrolysis and 4.6% reported previous laser hair removal. For electrolysis, that works out to 59.4% of transfeminine and 6.1% of transmasculine respondents, while 9.1% of all transfeminine and no transmasculine persons had received laser hair removal, Dr. Ragmanauskaite of the department of dermatology, Emory University, Atlanta, and her coauthors said.

Those who had undergone gender-affirming surgery were significantly more likely to report electrolysis (78.6%) than were persons who had received no gender-affirming surgery or hormone therapy alone (47.4%), a statistically significant difference (P < .01). All of the other, less common procedures included in the online survey – 696 responses were received from 350 transfeminine and 346 transmasculine persons participating in the Study of Transition, Outcomes, and Gender – were reported more often by the transfeminine respondents. The procedure with the closest gender distribution was body contouring, reported by nine transfeminine and six transmasculine persons, the researchers said.

Use of dermal fillers was even less common (2.8% among all respondents, all transfeminine persons), with just 11 reporting having received silicone and 8 reporting having received collagen, although the survey did not ask about how the injections were obtained. In a previous study, the prevalence of illicit filler injection in transgender women was 16.9%, they pointed out.

These types of noninvasive, gender-affirming procedures “may contribute to higher levels of self-confidence and [reduce] gender dysphoria. Future studies should examine motivations, barriers, and optimal timing” for such procedures in transgender persons, Dr. Ragmanauskaite and associates wrote.

The authors reported that they had no relevant disclosures.

[email protected]

About 36% of transgender persons had undergone a dermatologic procedure, with hair removal by far the most common, according to the results of a recent survey.

Transfeminine persons – those assigned male at birth – were much more likely to report a previous dermatologic procedure, compared with transmasculine respondents, by a margin of 64.9%-7.5%, Laura Ragmanauskaite, MD, and associates reported.

“Hair removal was the most frequently reported procedure type, with electrolysis being more common than laser hair removal,” they said, noting that “previous research on hair removal treatments among gender minority persons did not detect differences in the use of electrolysis and laser hair removal.”

Just under one-third of all respondents (32.9%) said that they had undergone electrolysis and 4.6% reported previous laser hair removal. For electrolysis, that works out to 59.4% of transfeminine and 6.1% of transmasculine respondents, while 9.1% of all transfeminine and no transmasculine persons had received laser hair removal, Dr. Ragmanauskaite of the department of dermatology, Emory University, Atlanta, and her coauthors said.

Those who had undergone gender-affirming surgery were significantly more likely to report electrolysis (78.6%) than were persons who had received no gender-affirming surgery or hormone therapy alone (47.4%), a statistically significant difference (P < .01). All of the other, less common procedures included in the online survey – 696 responses were received from 350 transfeminine and 346 transmasculine persons participating in the Study of Transition, Outcomes, and Gender – were reported more often by the transfeminine respondents. The procedure with the closest gender distribution was body contouring, reported by nine transfeminine and six transmasculine persons, the researchers said.

Use of dermal fillers was even less common (2.8% among all respondents, all transfeminine persons), with just 11 reporting having received silicone and 8 reporting having received collagen, although the survey did not ask about how the injections were obtained. In a previous study, the prevalence of illicit filler injection in transgender women was 16.9%, they pointed out.

These types of noninvasive, gender-affirming procedures “may contribute to higher levels of self-confidence and [reduce] gender dysphoria. Future studies should examine motivations, barriers, and optimal timing” for such procedures in transgender persons, Dr. Ragmanauskaite and associates wrote.

The authors reported that they had no relevant disclosures.

[email protected]

Gender-affirmation surgery refers to a collection of procedures by which a transgender individual physically alters characteristics to align with their gender identity. While not all patients who identify as transgender will choose to undergo surgery, the surgeries are considered medically necessary and lead to significant improvements in emotional and psychological well-being.¹ With increasing insurance coverage and improved access to care, more and more patients are seeking gender-affirming surgery, and it is incumbent for providers to familiarize themselves with preoperative recommendations and requirements.

Ob.gyns. play a key role in patients seeking surgical treatment as patients may inquire about available procedures and what steps are necessary prior to scheduling a visit with the appropriate surgeon. The World Professional Association of Transgender Health has established standards of care that provide multidisciplinary, evidence-based guidance for patients seeking a variety of gender-affirming services ranging from mental health, hormone therapy, and surgery.

Basic preoperative surgical prerequisites set forth by WPATH include being a patient with well-documented gender dysphoria, being the age of majority, and having the ability to provide informed consent.¹

As with any surgical candidate, it is also equally important for a patient to have well-controlled medical and psychiatric comorbidities, which should also include smoking cessation. A variety of surgical procedures are available to patients and include breast/chest surgery, genital (bottom) surgery, and nongenital surgery (facial feminization, pectoral implant placement, thyroid chondroplasty, lipofilling/liposuction, body contouring, and voice modification). Patients may choose to undergo chest/breast surgery and/or bottom surgery or forgo surgical procedures altogether.

For transmasculine patients, breast/chest surgery, otherwise known as top surgery, is the most common and desired procedure. According to a recent survey, approximately 97% of transmasculine patients had or wanted masculinizing chest surgery.² In addition to patients meeting the basic requirements set forth by WPATH, one referral from a mental health provider specializing in gender-affirming care is also needed prior to this procedure. It is also important to note that testosterone use is no longer a needed prior to masculinizing chest surgery.

Transmasculine bottom surgery, which includes hysterectomy, bilateral salpingo-oophorectomy, metoidioplasty, vaginectomy, scrotoplasty, testicular implant placement, and/or phalloplasty have additional nuances. Compared with transmasculine individuals seeking top surgery, the number of patients who have had or desire metoidioplasty and phalloplasty is much lower, which is mainly because of the high complication rates of these procedures. In the same survey, only 4% of patients had undergone a metoidioplasty procedure and 2% of patients had undergone a phalloplasty.²

In evaluating rates of hysterectomy with or without salpingo-oophorectomy, approximately 21% of transgender men underwent hysterectomy, with 58% desiring it in the future.² Unlike patients pursuing top surgery, patients who desire any form of bottom surgery need to be on 12 months of continuous hormone therapy.¹ They also must provide two letters from two different mental health providers, one of whom must have either an MD/DO or PhD. In cases in which a patient requests a hysterectomy for reasons other than gender dysphoria, such as pelvic pain or abnormal uterine bleeding, these criteria do not apply.

For transfeminine individuals, augmentation mammoplasty is performed following 12 months of continuous hormone therapy. This is to allow maximum breast growth, which occurs approximately 2-3 months after hormone initiation and peaks at 1-2 years.³ Rates of transfeminine individuals seeking augmentation mammoplasty is similar to that of their transmasculine counterparts at 74%.² One referral letter from a mental health provider is also needed prior to augmentation mammoplasty.

Transfeminine patients who desire bottom surgery, which can involve an orchiectomy or vaginoplasty (single-stage penile inversion, peritoneal, or colonic interposition), have the same additional requirements as transmasculine individuals seeking bottom surgery. Furthermore, it is interesting to note that 25% of transfeminine individuals had already undergone orchiectomy and 87% had either undergone or desired a vaginoplasty in the future.² This is in stark contrast to transmasculine patients and rates of bottom surgery.

Unless there is a specific medical contraindication to hormone therapy, emphasis is placed on 12 months of continuous hormone usage. Additional emphasis is placed on patients seeking bottom surgery to live for a minimum of 12 months in their congruent gender role. This also allows patients to further explore their gender identity and make appropriate preparations for surgery.

As with any surgical procedure, obtaining informed consent and reviewing patient expectations are key. In my clinical practice, I discuss with patients that the general surgical goals are to achieve both function and good aesthetic outcome but that their results are also tailored to their individual bodies. Assessing a patient’s support system and social factors is also equally important in the preoperative planning period. As this field continues to grow, it is essential for providers to understand the evolving distinctions in surgical care to improve access to patients.

Dr. Brandt is an ob.gyn. and fellowship-trained gender-affirming surgeon in West Reading, Pa. She has no conflicts. Email her at [email protected].

References

1. The World Professional Association for Transgender Health. Standards of Care for the Health of Transsexual, Transgender, and Gender Nonconforming People. https://www.wpath.org/publications/soc.

2. James SE et al. The report of the 2015 U.S. Transgender survey. Washington, D.C.: National Center for Transgender Equality. 2016.

3. Thomas TN. Overview of surgery for transgender patients, in “Comprehensive care for the transgender patient.” Philadelphia: Elsevier, 2020. pp. 48-53.

Gender-affirmation surgery refers to a collection of procedures by which a transgender individual physically alters characteristics to align with their gender identity. While not all patients who identify as transgender will choose to undergo surgery, the surgeries are considered medically necessary and lead to significant improvements in emotional and psychological well-being.¹ With increasing insurance coverage and improved access to care, more and more patients are seeking gender-affirming surgery, and it is incumbent for providers to familiarize themselves with preoperative recommendations and requirements.

Ob.gyns. play a key role in patients seeking surgical treatment as patients may inquire about available procedures and what steps are necessary prior to scheduling a visit with the appropriate surgeon. The World Professional Association of Transgender Health has established standards of care that provide multidisciplinary, evidence-based guidance for patients seeking a variety of gender-affirming services ranging from mental health, hormone therapy, and surgery.

Basic preoperative surgical prerequisites set forth by WPATH include being a patient with well-documented gender dysphoria, being the age of majority, and having the ability to provide informed consent.¹

As with any surgical candidate, it is also equally important for a patient to have well-controlled medical and psychiatric comorbidities, which should also include smoking cessation. A variety of surgical procedures are available to patients and include breast/chest surgery, genital (bottom) surgery, and nongenital surgery (facial feminization, pectoral implant placement, thyroid chondroplasty, lipofilling/liposuction, body contouring, and voice modification). Patients may choose to undergo chest/breast surgery and/or bottom surgery or forgo surgical procedures altogether.

For transmasculine patients, breast/chest surgery, otherwise known as top surgery, is the most common and desired procedure. According to a recent survey, approximately 97% of transmasculine patients had or wanted masculinizing chest surgery.² In addition to patients meeting the basic requirements set forth by WPATH, one referral from a mental health provider specializing in gender-affirming care is also needed prior to this procedure. It is also important to note that testosterone use is no longer a needed prior to masculinizing chest surgery.

Transmasculine bottom surgery, which includes hysterectomy, bilateral salpingo-oophorectomy, metoidioplasty, vaginectomy, scrotoplasty, testicular implant placement, and/or phalloplasty have additional nuances. Compared with transmasculine individuals seeking top surgery, the number of patients who have had or desire metoidioplasty and phalloplasty is much lower, which is mainly because of the high complication rates of these procedures. In the same survey, only 4% of patients had undergone a metoidioplasty procedure and 2% of patients had undergone a phalloplasty.²

In evaluating rates of hysterectomy with or without salpingo-oophorectomy, approximately 21% of transgender men underwent hysterectomy, with 58% desiring it in the future.² Unlike patients pursuing top surgery, patients who desire any form of bottom surgery need to be on 12 months of continuous hormone therapy.¹ They also must provide two letters from two different mental health providers, one of whom must have either an MD/DO or PhD. In cases in which a patient requests a hysterectomy for reasons other than gender dysphoria, such as pelvic pain or abnormal uterine bleeding, these criteria do not apply.

For transfeminine individuals, augmentation mammoplasty is performed following 12 months of continuous hormone therapy. This is to allow maximum breast growth, which occurs approximately 2-3 months after hormone initiation and peaks at 1-2 years.³ Rates of transfeminine individuals seeking augmentation mammoplasty is similar to that of their transmasculine counterparts at 74%.² One referral letter from a mental health provider is also needed prior to augmentation mammoplasty.

Transfeminine patients who desire bottom surgery, which can involve an orchiectomy or vaginoplasty (single-stage penile inversion, peritoneal, or colonic interposition), have the same additional requirements as transmasculine individuals seeking bottom surgery. Furthermore, it is interesting to note that 25% of transfeminine individuals had already undergone orchiectomy and 87% had either undergone or desired a vaginoplasty in the future.² This is in stark contrast to transmasculine patients and rates of bottom surgery.

Unless there is a specific medical contraindication to hormone therapy, emphasis is placed on 12 months of continuous hormone usage. Additional emphasis is placed on patients seeking bottom surgery to live for a minimum of 12 months in their congruent gender role. This also allows patients to further explore their gender identity and make appropriate preparations for surgery.

As with any surgical procedure, obtaining informed consent and reviewing patient expectations are key. In my clinical practice, I discuss with patients that the general surgical goals are to achieve both function and good aesthetic outcome but that their results are also tailored to their individual bodies. Assessing a patient’s support system and social factors is also equally important in the preoperative planning period. As this field continues to grow, it is essential for providers to understand the evolving distinctions in surgical care to improve access to patients.

Dr. Brandt is an ob.gyn. and fellowship-trained gender-affirming surgeon in West Reading, Pa. She has no conflicts. Email her at [email protected].

References

1. The World Professional Association for Transgender Health. Standards of Care for the Health of Transsexual, Transgender, and Gender Nonconforming People. https://www.wpath.org/publications/soc.

2. James SE et al. The report of the 2015 U.S. Transgender survey. Washington, D.C.: National Center for Transgender Equality. 2016.

3. Thomas TN. Overview of surgery for transgender patients, in “Comprehensive care for the transgender patient.” Philadelphia: Elsevier, 2020. pp. 48-53.

Gender-affirmation surgery refers to a collection of procedures by which a transgender individual physically alters characteristics to align with their gender identity. While not all patients who identify as transgender will choose to undergo surgery, the surgeries are considered medically necessary and lead to significant improvements in emotional and psychological well-being.¹ With increasing insurance coverage and improved access to care, more and more patients are seeking gender-affirming surgery, and it is incumbent for providers to familiarize themselves with preoperative recommendations and requirements.

Ob.gyns. play a key role in patients seeking surgical treatment as patients may inquire about available procedures and what steps are necessary prior to scheduling a visit with the appropriate surgeon. The World Professional Association of Transgender Health has established standards of care that provide multidisciplinary, evidence-based guidance for patients seeking a variety of gender-affirming services ranging from mental health, hormone therapy, and surgery.

Basic preoperative surgical prerequisites set forth by WPATH include being a patient with well-documented gender dysphoria, being the age of majority, and having the ability to provide informed consent.¹

As with any surgical candidate, it is also equally important for a patient to have well-controlled medical and psychiatric comorbidities, which should also include smoking cessation. A variety of surgical procedures are available to patients and include breast/chest surgery, genital (bottom) surgery, and nongenital surgery (facial feminization, pectoral implant placement, thyroid chondroplasty, lipofilling/liposuction, body contouring, and voice modification). Patients may choose to undergo chest/breast surgery and/or bottom surgery or forgo surgical procedures altogether.

For transmasculine patients, breast/chest surgery, otherwise known as top surgery, is the most common and desired procedure. According to a recent survey, approximately 97% of transmasculine patients had or wanted masculinizing chest surgery.² In addition to patients meeting the basic requirements set forth by WPATH, one referral from a mental health provider specializing in gender-affirming care is also needed prior to this procedure. It is also important to note that testosterone use is no longer a needed prior to masculinizing chest surgery.

Transmasculine bottom surgery, which includes hysterectomy, bilateral salpingo-oophorectomy, metoidioplasty, vaginectomy, scrotoplasty, testicular implant placement, and/or phalloplasty have additional nuances. Compared with transmasculine individuals seeking top surgery, the number of patients who have had or desire metoidioplasty and phalloplasty is much lower, which is mainly because of the high complication rates of these procedures. In the same survey, only 4% of patients had undergone a metoidioplasty procedure and 2% of patients had undergone a phalloplasty.²

In evaluating rates of hysterectomy with or without salpingo-oophorectomy, approximately 21% of transgender men underwent hysterectomy, with 58% desiring it in the future.² Unlike patients pursuing top surgery, patients who desire any form of bottom surgery need to be on 12 months of continuous hormone therapy.¹ They also must provide two letters from two different mental health providers, one of whom must have either an MD/DO or PhD. In cases in which a patient requests a hysterectomy for reasons other than gender dysphoria, such as pelvic pain or abnormal uterine bleeding, these criteria do not apply.

For transfeminine individuals, augmentation mammoplasty is performed following 12 months of continuous hormone therapy. This is to allow maximum breast growth, which occurs approximately 2-3 months after hormone initiation and peaks at 1-2 years.³ Rates of transfeminine individuals seeking augmentation mammoplasty is similar to that of their transmasculine counterparts at 74%.² One referral letter from a mental health provider is also needed prior to augmentation mammoplasty.

Transfeminine patients who desire bottom surgery, which can involve an orchiectomy or vaginoplasty (single-stage penile inversion, peritoneal, or colonic interposition), have the same additional requirements as transmasculine individuals seeking bottom surgery. Furthermore, it is interesting to note that 25% of transfeminine individuals had already undergone orchiectomy and 87% had either undergone or desired a vaginoplasty in the future.² This is in stark contrast to transmasculine patients and rates of bottom surgery.

Unless there is a specific medical contraindication to hormone therapy, emphasis is placed on 12 months of continuous hormone usage. Additional emphasis is placed on patients seeking bottom surgery to live for a minimum of 12 months in their congruent gender role. This also allows patients to further explore their gender identity and make appropriate preparations for surgery.

As with any surgical procedure, obtaining informed consent and reviewing patient expectations are key. In my clinical practice, I discuss with patients that the general surgical goals are to achieve both function and good aesthetic outcome but that their results are also tailored to their individual bodies. Assessing a patient’s support system and social factors is also equally important in the preoperative planning period. As this field continues to grow, it is essential for providers to understand the evolving distinctions in surgical care to improve access to patients.

Dr. Brandt is an ob.gyn. and fellowship-trained gender-affirming surgeon in West Reading, Pa. She has no conflicts. Email her at [email protected].

References

1. The World Professional Association for Transgender Health. Standards of Care for the Health of Transsexual, Transgender, and Gender Nonconforming People. https://www.wpath.org/publications/soc.

2. James SE et al. The report of the 2015 U.S. Transgender survey. Washington, D.C.: National Center for Transgender Equality. 2016.

3. Thomas TN. Overview of surgery for transgender patients, in “Comprehensive care for the transgender patient.” Philadelphia: Elsevier, 2020. pp. 48-53.

I graduated medical school in May 2020, right as COVID was taking over the country, and the specter of the virus has hung over every aspect of my residency education thus far.

I did not get a medical school graduation; I was one of the many thousands of newly graduated students who simply left their 4th-year rotation sites one chilly day in March 2020 and just never went back. My medical school education didn’t end with me walking triumphantly across the stage – a first-generation college student finally achieving the greatest dream in her life. Instead, it ended with a Zoom “graduation” and a cross-country move from Georgia to Pennsylvania amidst the greatest pandemic in recent memory. To say my impostor syndrome was bad would be an understatement.
 

Residency in the COVID-19-era

The joy and the draw to family medicine for me has always been the broad scope of conditions that we see and treat. From day 1, however, much of my residency has been devoted to one very small subset of patients – those with COVID-19. At one point, our hospital was so strained that our family medicine program had to run a second inpatient service alongside our usual five-resident service team just to provide care to everybody. Patients were in the hallways. The ER was packed to the gills. We were sleepless, terrified, unvaccinated, and desperate to help our patients survive a disease that was incompletely understood, with very few tools in our toolbox to combat it.

I distinctly remember sitting in the workroom with a coresident of mine, our faces seemingly permanently lined from wearing N95s all shift, and saying to him, “I worry I will be a bad family medicine physician. I worry I haven’t seen enough, other than COVID.” It was midway through my intern year; the days were short, so I was driving to and from the hospital in chilly darkness. My patients, like many around the country, were doing poorly. Vaccines seemed like a promise too good to be true. Worst of all: Those of us who were interns, who had no triumphant podium moment to end our medical school education, were suffering with an intense sense of impostor syndrome which was strengthened by every “there is nothing else we can offer your loved one at this time,” conversation we had. My apprehension about not having seen a wider breadth of medicine during my training is a sentiment still widely shared by COVID-era residents.

Luckily, my coresident was supportive.

“We’re going to be great family medicine physicians,” he said. “We’re learning the hard stuff – the bread and butter of FM – up-front. You’ll see.”

In some ways, I think he was right. Clinical skills, empathy, humility, and forging strong relationships are at the center of every family medicine physician’s heart; my generation has had to learn these skills early and under pressure. Sometimes, there are no answers. Sometimes, the best thing a family doctor can do for a patient is to hear them, understand them, and hold their hand.
 

‘We watched Cinderella together’

Shortly after that conversation with my coresident, I had a particular case which moved me. This gentleman with intellectual disability and COVID had been declining steadily since his admission to the hospital. He was isolated from everybody he knew and loved, but it did not dampen his spirits. He was cheerful to every person who entered his room, clad in their shrouds of PPE, which more often than not felt more like mourning garb than protective wear. I remember very little about this patient’s clinical picture – the COVID, the superimposed pneumonia, the repeated intubations. What I do remember is he loved the Disney classic, Cinderella. I knew this because I developed a very close relationship with his family during the course of his hospitalization. Amidst the torrential onslaught of patients, I made sure to call families every day – not because I wanted to, but because my mentors and attendings and coresidents had all drilled into me from day 1 that we are family medicine, and a large part of our role is to advocate for our patients, and to communicate with their loved ones. So I called. I learned a lot about him; his likes, his dislikes, his close bond with his siblings, and of course his lifelong love for Cinderella. On the last week of my ICU rotation, my patient passed peacefully. His nurse and I were bedside. We held his hand. We told him his family loved him. We watched Cinderella together on an iPad encased in protective plastic.

My next rotation was an outpatient one and it looked more like the “bread and butter” of family medicine. But as I whisked in and out of patient rooms, attending to patients with diabetes, with depression, with pain, I could not stop thinking about my hospitalized patients who my coresidents had assumed care of. Each exam room I entered, I rather morbidly thought “this patient could be next on our hospital service.” Without realizing it, I made more of an effort to get to know each patient holistically. I learned who they were as people. I found myself writing small, medically low-yield details in the chart: “Margaret loves to sing in her church choir;” “Katherine is a self-published author.”

I learned from my attendings. As I sat at the precepting table with them, observing their conversations about patients, their collective decades of experience were apparent.

“I’ve been seeing this patient every few weeks since I was a resident,” said one of my attendings.

“I don’t even see my parents that often,” I thought.

The depth of her relationship with, understanding of, and compassion for this patient struck me deeply. This was why I went into family medicine. My attending knew her patients; they were not faceless unknowns in a hospital gown to her. She would have known to play Cinderella for them in the end.

This is a unique time for trainees. We have been challenged, terrified, overwhelmed, and heartbroken. But at no point have we been isolated. We’ve had the generations of doctors before us to lead the way, to teach us the “hard stuff.” We’ve had senior residents to lean on, who have taken us aside and told us, “I can do the goals-of-care talk today, you need a break.” While the plague seems to have passed over our hospital for now, it has left behind a class of family medicine residents who are proud to carry on our specialty’s long tradition of compassionate, empathetic, lifelong care. “We care for all life stages, from cradle to grave,” says every family medicine physician.

My class, for better or for worse, has cared more often for patients in the twilight of their lives, and while it has been hard, I believe it has made us all better doctors. Now, when I hold a newborn in my arms for a well-child check, I am exceptionally grateful – for the opportunities I have been given, for new beginnings amidst so much sadness, and for the great privilege of being a family medicine physician.
 

Dr. Persampiere is a 2nd-year resident in the family medicine residency program at Abington (Pa.) Jefferson Health. You can contact her directly at [email protected] or via [email protected].

I graduated medical school in May 2020, right as COVID was taking over the country, and the specter of the virus has hung over every aspect of my residency education thus far.

I did not get a medical school graduation; I was one of the many thousands of newly graduated students who simply left their 4th-year rotation sites one chilly day in March 2020 and just never went back. My medical school education didn’t end with me walking triumphantly across the stage – a first-generation college student finally achieving the greatest dream in her life. Instead, it ended with a Zoom “graduation” and a cross-country move from Georgia to Pennsylvania amidst the greatest pandemic in recent memory. To say my impostor syndrome was bad would be an understatement.
 

Residency in the COVID-19-era

The joy and the draw to family medicine for me has always been the broad scope of conditions that we see and treat. From day 1, however, much of my residency has been devoted to one very small subset of patients – those with COVID-19. At one point, our hospital was so strained that our family medicine program had to run a second inpatient service alongside our usual five-resident service team just to provide care to everybody. Patients were in the hallways. The ER was packed to the gills. We were sleepless, terrified, unvaccinated, and desperate to help our patients survive a disease that was incompletely understood, with very few tools in our toolbox to combat it.

I distinctly remember sitting in the workroom with a coresident of mine, our faces seemingly permanently lined from wearing N95s all shift, and saying to him, “I worry I will be a bad family medicine physician. I worry I haven’t seen enough, other than COVID.” It was midway through my intern year; the days were short, so I was driving to and from the hospital in chilly darkness. My patients, like many around the country, were doing poorly. Vaccines seemed like a promise too good to be true. Worst of all: Those of us who were interns, who had no triumphant podium moment to end our medical school education, were suffering with an intense sense of impostor syndrome which was strengthened by every “there is nothing else we can offer your loved one at this time,” conversation we had. My apprehension about not having seen a wider breadth of medicine during my training is a sentiment still widely shared by COVID-era residents.

Luckily, my coresident was supportive.

“We’re going to be great family medicine physicians,” he said. “We’re learning the hard stuff – the bread and butter of FM – up-front. You’ll see.”

In some ways, I think he was right. Clinical skills, empathy, humility, and forging strong relationships are at the center of every family medicine physician’s heart; my generation has had to learn these skills early and under pressure. Sometimes, there are no answers. Sometimes, the best thing a family doctor can do for a patient is to hear them, understand them, and hold their hand.
 

‘We watched Cinderella together’

Shortly after that conversation with my coresident, I had a particular case which moved me. This gentleman with intellectual disability and COVID had been declining steadily since his admission to the hospital. He was isolated from everybody he knew and loved, but it did not dampen his spirits. He was cheerful to every person who entered his room, clad in their shrouds of PPE, which more often than not felt more like mourning garb than protective wear. I remember very little about this patient’s clinical picture – the COVID, the superimposed pneumonia, the repeated intubations. What I do remember is he loved the Disney classic, Cinderella. I knew this because I developed a very close relationship with his family during the course of his hospitalization. Amidst the torrential onslaught of patients, I made sure to call families every day – not because I wanted to, but because my mentors and attendings and coresidents had all drilled into me from day 1 that we are family medicine, and a large part of our role is to advocate for our patients, and to communicate with their loved ones. So I called. I learned a lot about him; his likes, his dislikes, his close bond with his siblings, and of course his lifelong love for Cinderella. On the last week of my ICU rotation, my patient passed peacefully. His nurse and I were bedside. We held his hand. We told him his family loved him. We watched Cinderella together on an iPad encased in protective plastic.

My next rotation was an outpatient one and it looked more like the “bread and butter” of family medicine. But as I whisked in and out of patient rooms, attending to patients with diabetes, with depression, with pain, I could not stop thinking about my hospitalized patients who my coresidents had assumed care of. Each exam room I entered, I rather morbidly thought “this patient could be next on our hospital service.” Without realizing it, I made more of an effort to get to know each patient holistically. I learned who they were as people. I found myself writing small, medically low-yield details in the chart: “Margaret loves to sing in her church choir;” “Katherine is a self-published author.”

I learned from my attendings. As I sat at the precepting table with them, observing their conversations about patients, their collective decades of experience were apparent.

“I’ve been seeing this patient every few weeks since I was a resident,” said one of my attendings.

“I don’t even see my parents that often,” I thought.

The depth of her relationship with, understanding of, and compassion for this patient struck me deeply. This was why I went into family medicine. My attending knew her patients; they were not faceless unknowns in a hospital gown to her. She would have known to play Cinderella for them in the end.

This is a unique time for trainees. We have been challenged, terrified, overwhelmed, and heartbroken. But at no point have we been isolated. We’ve had the generations of doctors before us to lead the way, to teach us the “hard stuff.” We’ve had senior residents to lean on, who have taken us aside and told us, “I can do the goals-of-care talk today, you need a break.” While the plague seems to have passed over our hospital for now, it has left behind a class of family medicine residents who are proud to carry on our specialty’s long tradition of compassionate, empathetic, lifelong care. “We care for all life stages, from cradle to grave,” says every family medicine physician.

My class, for better or for worse, has cared more often for patients in the twilight of their lives, and while it has been hard, I believe it has made us all better doctors. Now, when I hold a newborn in my arms for a well-child check, I am exceptionally grateful – for the opportunities I have been given, for new beginnings amidst so much sadness, and for the great privilege of being a family medicine physician.
 

Dr. Persampiere is a 2nd-year resident in the family medicine residency program at Abington (Pa.) Jefferson Health. You can contact her directly at [email protected] or via [email protected].

I graduated medical school in May 2020, right as COVID was taking over the country, and the specter of the virus has hung over every aspect of my residency education thus far.

I did not get a medical school graduation; I was one of the many thousands of newly graduated students who simply left their 4th-year rotation sites one chilly day in March 2020 and just never went back. My medical school education didn’t end with me walking triumphantly across the stage – a first-generation college student finally achieving the greatest dream in her life. Instead, it ended with a Zoom “graduation” and a cross-country move from Georgia to Pennsylvania amidst the greatest pandemic in recent memory. To say my impostor syndrome was bad would be an understatement.
 

Residency in the COVID-19-era

The joy and the draw to family medicine for me has always been the broad scope of conditions that we see and treat. From day 1, however, much of my residency has been devoted to one very small subset of patients – those with COVID-19. At one point, our hospital was so strained that our family medicine program had to run a second inpatient service alongside our usual five-resident service team just to provide care to everybody. Patients were in the hallways. The ER was packed to the gills. We were sleepless, terrified, unvaccinated, and desperate to help our patients survive a disease that was incompletely understood, with very few tools in our toolbox to combat it.

I distinctly remember sitting in the workroom with a coresident of mine, our faces seemingly permanently lined from wearing N95s all shift, and saying to him, “I worry I will be a bad family medicine physician. I worry I haven’t seen enough, other than COVID.” It was midway through my intern year; the days were short, so I was driving to and from the hospital in chilly darkness. My patients, like many around the country, were doing poorly. Vaccines seemed like a promise too good to be true. Worst of all: Those of us who were interns, who had no triumphant podium moment to end our medical school education, were suffering with an intense sense of impostor syndrome which was strengthened by every “there is nothing else we can offer your loved one at this time,” conversation we had. My apprehension about not having seen a wider breadth of medicine during my training is a sentiment still widely shared by COVID-era residents.

Luckily, my coresident was supportive.

“We’re going to be great family medicine physicians,” he said. “We’re learning the hard stuff – the bread and butter of FM – up-front. You’ll see.”

In some ways, I think he was right. Clinical skills, empathy, humility, and forging strong relationships are at the center of every family medicine physician’s heart; my generation has had to learn these skills early and under pressure. Sometimes, there are no answers. Sometimes, the best thing a family doctor can do for a patient is to hear them, understand them, and hold their hand.
 

‘We watched Cinderella together’

Shortly after that conversation with my coresident, I had a particular case which moved me. This gentleman with intellectual disability and COVID had been declining steadily since his admission to the hospital. He was isolated from everybody he knew and loved, but it did not dampen his spirits. He was cheerful to every person who entered his room, clad in their shrouds of PPE, which more often than not felt more like mourning garb than protective wear. I remember very little about this patient’s clinical picture – the COVID, the superimposed pneumonia, the repeated intubations. What I do remember is he loved the Disney classic, Cinderella. I knew this because I developed a very close relationship with his family during the course of his hospitalization. Amidst the torrential onslaught of patients, I made sure to call families every day – not because I wanted to, but because my mentors and attendings and coresidents had all drilled into me from day 1 that we are family medicine, and a large part of our role is to advocate for our patients, and to communicate with their loved ones. So I called. I learned a lot about him; his likes, his dislikes, his close bond with his siblings, and of course his lifelong love for Cinderella. On the last week of my ICU rotation, my patient passed peacefully. His nurse and I were bedside. We held his hand. We told him his family loved him. We watched Cinderella together on an iPad encased in protective plastic.

My next rotation was an outpatient one and it looked more like the “bread and butter” of family medicine. But as I whisked in and out of patient rooms, attending to patients with diabetes, with depression, with pain, I could not stop thinking about my hospitalized patients who my coresidents had assumed care of. Each exam room I entered, I rather morbidly thought “this patient could be next on our hospital service.” Without realizing it, I made more of an effort to get to know each patient holistically. I learned who they were as people. I found myself writing small, medically low-yield details in the chart: “Margaret loves to sing in her church choir;” “Katherine is a self-published author.”

I learned from my attendings. As I sat at the precepting table with them, observing their conversations about patients, their collective decades of experience were apparent.

“I’ve been seeing this patient every few weeks since I was a resident,” said one of my attendings.

“I don’t even see my parents that often,” I thought.

The depth of her relationship with, understanding of, and compassion for this patient struck me deeply. This was why I went into family medicine. My attending knew her patients; they were not faceless unknowns in a hospital gown to her. She would have known to play Cinderella for them in the end.

This is a unique time for trainees. We have been challenged, terrified, overwhelmed, and heartbroken. But at no point have we been isolated. We’ve had the generations of doctors before us to lead the way, to teach us the “hard stuff.” We’ve had senior residents to lean on, who have taken us aside and told us, “I can do the goals-of-care talk today, you need a break.” While the plague seems to have passed over our hospital for now, it has left behind a class of family medicine residents who are proud to carry on our specialty’s long tradition of compassionate, empathetic, lifelong care. “We care for all life stages, from cradle to grave,” says every family medicine physician.

My class, for better or for worse, has cared more often for patients in the twilight of their lives, and while it has been hard, I believe it has made us all better doctors. Now, when I hold a newborn in my arms for a well-child check, I am exceptionally grateful – for the opportunities I have been given, for new beginnings amidst so much sadness, and for the great privilege of being a family medicine physician.
 

Dr. Persampiere is a 2nd-year resident in the family medicine residency program at Abington (Pa.) Jefferson Health. You can contact her directly at [email protected] or via [email protected].

A new study suggests that tiny, clear nematodes can sniff out early-stage pancreatic cancer.

Research shows Caenorhabditis elegans are attracted to the odor certain chemicals give off – a behavior known as attractive chemotaxis – and early evidence indicates these scents may include human cancer cell secretions, cancer tissues, and urine from patients with colorectal, gastric, and breast cancers.

According to the recent analysis, published in Oncotarget, these small worms may be hot on the trail of pancreatic cancer–related compounds too. The researchers found that C. elegans were significantly more attracted to patients with early-stage pancreatic cancer versus healthy controls.

There is a huge need for research like this that explores strategies to detect pancreatic cancer early, but it’s far too soon to tell how, or if, this particular approach will be clinically relevant, according to Neeha Zaidi, MD, assistant professor of oncology and a medical oncologist specializing in pancreatic cancer at John Hopkins Medicine, Baltimore, who was not involved in the current analysis.

Right now, few diagnostic markers exist for identifying pancreatic ductal adenocarcinomas (PDACs), which account for 90% of pancreatic cancers. PDACs remain one of the deadliest cancers, with a 5-year survival rate of 9%.

A combination of surgical resection and chemotherapy is the only curative treatment, and just 20% of patients are eligible, Dr. Zaidi said. The majority are identified after the disease has metastasized.

However, patients’ 5-year survival rate improves markedly – as high as 85% – if the condition is caught sooner.

In the current study, the researchers first exposed C. elegans to the urine of 83 patients from cancer centers across Japan who had various stages of pancreatic cancer before and after undergoing surgical resection. Using an assay, which takes 30 minutes and 50-100 nematodes per test, C. elegans showed significantly higher chemotaxis toward preoperative urine, compared with postoperative urine.

In a second, closed-labeled arm, the nematodes were exposed to the urine of 28 randomized participants – 11 of whom had early-stage pancreatic cancer (0 or IA), plus 17 healthy volunteers. In this instance as well, C. elegans showed significantly higher chemotaxis in patients with early-stage pancreatic cancer, compared with healthy volunteers (P = .034). 

According to the authors, C. elegans “had a higher sensitivity for detecting early pancreatic cancer compared to existing diagnostic markers.” And while this strategy needs to be further validated, they believe early detection of pancreatic cancer using C. elegans “can certainly be expected in the near future.”

The study aligns with previous research, showing that wild-type C. elegans are sensitive to scent and that these critters can smell cancer. Other studies have also found that sniffer canines can detect volatile organic compounds – including biomarkers of certain cancers – in the urine and breath of cancer patients. But training an adequate number of these canines for the clinic isn’t feasible, while C. elegans are far more compact and affordable.

According to Dr. Zaidi, a scent test using C. elegans “seems pretty feasible” and cost effective, but whether this approach will “change our care has yet to be determined.”

The authors, for instance, don’t specify how the scent test will be used, though Dr. Zaidi suspects it would be most relevant for following patients with a higher risk of pancreatic cancer. Alternatively, it could be used as a screening test, but that’s a massive undertaking and “this is way too early to tell if it’s going to be helpful to use this test on a broad scale,” Dr. Zaidi said.

To validate the approach, researchers would also need to know what exactly the C. elegans are smelling and to test it in a much larger number of patients, Dr. Zaidi said. The mere 11 patients with cancer in the blinded portion of the study are not sufficient to draw any major conclusions.

The study also claims a high sensitivity, but what about specificity, Dr. Zaidi said. In other words, are there a lot of false positives? 

In addition, a deeper look at the participants shows the two groups – early PDAC and healthy volunteers – were not adequately balanced. The median age of the diseased patients was 70, and the healthy volunteers was 39.

“This is a big difference,” Eithne Costello, PhD, professor of molecular oncology at Liverpool (England) University, said in an interview. “It [also] appears the controls are all of one sex (either all male or all female), while the cancer group is mixed.”

The authors attributed these shortcomings to the small population they had to work with: There simply aren’t many patients whose pancreatic cancer is detected early. Dr. Zaidi agreed that patients with pancreatic cancer stage 0 or IA are extremely difficult to come by.

Even still, researchers need to understand the mechanisms behind this approach and see it work in a much larger group of patients, Dr. Zaidi said.

The study was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology. The authors reported institutional endowments received from Hirotsu Bio Science, Kinshu-kai Medical, IDEA Consultants, Ono Pharmaceutical, and others. Two coauthors are employees of Hirotsu Bio Science.

A version of this article first appeared on Medscape.com.

A new study suggests that tiny, clear nematodes can sniff out early-stage pancreatic cancer.

Research shows Caenorhabditis elegans are attracted to the odor certain chemicals give off – a behavior known as attractive chemotaxis – and early evidence indicates these scents may include human cancer cell secretions, cancer tissues, and urine from patients with colorectal, gastric, and breast cancers.

According to the recent analysis, published in Oncotarget, these small worms may be hot on the trail of pancreatic cancer–related compounds too. The researchers found that C. elegans were significantly more attracted to patients with early-stage pancreatic cancer versus healthy controls.

There is a huge need for research like this that explores strategies to detect pancreatic cancer early, but it’s far too soon to tell how, or if, this particular approach will be clinically relevant, according to Neeha Zaidi, MD, assistant professor of oncology and a medical oncologist specializing in pancreatic cancer at John Hopkins Medicine, Baltimore, who was not involved in the current analysis.

Right now, few diagnostic markers exist for identifying pancreatic ductal adenocarcinomas (PDACs), which account for 90% of pancreatic cancers. PDACs remain one of the deadliest cancers, with a 5-year survival rate of 9%.

A combination of surgical resection and chemotherapy is the only curative treatment, and just 20% of patients are eligible, Dr. Zaidi said. The majority are identified after the disease has metastasized.

However, patients’ 5-year survival rate improves markedly – as high as 85% – if the condition is caught sooner.

In the current study, the researchers first exposed C. elegans to the urine of 83 patients from cancer centers across Japan who had various stages of pancreatic cancer before and after undergoing surgical resection. Using an assay, which takes 30 minutes and 50-100 nematodes per test, C. elegans showed significantly higher chemotaxis toward preoperative urine, compared with postoperative urine.

In a second, closed-labeled arm, the nematodes were exposed to the urine of 28 randomized participants – 11 of whom had early-stage pancreatic cancer (0 or IA), plus 17 healthy volunteers. In this instance as well, C. elegans showed significantly higher chemotaxis in patients with early-stage pancreatic cancer, compared with healthy volunteers (P = .034). 

According to the authors, C. elegans “had a higher sensitivity for detecting early pancreatic cancer compared to existing diagnostic markers.” And while this strategy needs to be further validated, they believe early detection of pancreatic cancer using C. elegans “can certainly be expected in the near future.”

The study aligns with previous research, showing that wild-type C. elegans are sensitive to scent and that these critters can smell cancer. Other studies have also found that sniffer canines can detect volatile organic compounds – including biomarkers of certain cancers – in the urine and breath of cancer patients. But training an adequate number of these canines for the clinic isn’t feasible, while C. elegans are far more compact and affordable.

According to Dr. Zaidi, a scent test using C. elegans “seems pretty feasible” and cost effective, but whether this approach will “change our care has yet to be determined.”

The authors, for instance, don’t specify how the scent test will be used, though Dr. Zaidi suspects it would be most relevant for following patients with a higher risk of pancreatic cancer. Alternatively, it could be used as a screening test, but that’s a massive undertaking and “this is way too early to tell if it’s going to be helpful to use this test on a broad scale,” Dr. Zaidi said.

To validate the approach, researchers would also need to know what exactly the C. elegans are smelling and to test it in a much larger number of patients, Dr. Zaidi said. The mere 11 patients with cancer in the blinded portion of the study are not sufficient to draw any major conclusions.

The study also claims a high sensitivity, but what about specificity, Dr. Zaidi said. In other words, are there a lot of false positives? 

In addition, a deeper look at the participants shows the two groups – early PDAC and healthy volunteers – were not adequately balanced. The median age of the diseased patients was 70, and the healthy volunteers was 39.

“This is a big difference,” Eithne Costello, PhD, professor of molecular oncology at Liverpool (England) University, said in an interview. “It [also] appears the controls are all of one sex (either all male or all female), while the cancer group is mixed.”

The authors attributed these shortcomings to the small population they had to work with: There simply aren’t many patients whose pancreatic cancer is detected early. Dr. Zaidi agreed that patients with pancreatic cancer stage 0 or IA are extremely difficult to come by.

Even still, researchers need to understand the mechanisms behind this approach and see it work in a much larger group of patients, Dr. Zaidi said.

The study was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology. The authors reported institutional endowments received from Hirotsu Bio Science, Kinshu-kai Medical, IDEA Consultants, Ono Pharmaceutical, and others. Two coauthors are employees of Hirotsu Bio Science.

A version of this article first appeared on Medscape.com.

A new study suggests that tiny, clear nematodes can sniff out early-stage pancreatic cancer.

Research shows Caenorhabditis elegans are attracted to the odor certain chemicals give off – a behavior known as attractive chemotaxis – and early evidence indicates these scents may include human cancer cell secretions, cancer tissues, and urine from patients with colorectal, gastric, and breast cancers.

According to the recent analysis, published in Oncotarget, these small worms may be hot on the trail of pancreatic cancer–related compounds too. The researchers found that C. elegans were significantly more attracted to patients with early-stage pancreatic cancer versus healthy controls.

There is a huge need for research like this that explores strategies to detect pancreatic cancer early, but it’s far too soon to tell how, or if, this particular approach will be clinically relevant, according to Neeha Zaidi, MD, assistant professor of oncology and a medical oncologist specializing in pancreatic cancer at John Hopkins Medicine, Baltimore, who was not involved in the current analysis.

Right now, few diagnostic markers exist for identifying pancreatic ductal adenocarcinomas (PDACs), which account for 90% of pancreatic cancers. PDACs remain one of the deadliest cancers, with a 5-year survival rate of 9%.

A combination of surgical resection and chemotherapy is the only curative treatment, and just 20% of patients are eligible, Dr. Zaidi said. The majority are identified after the disease has metastasized.

However, patients’ 5-year survival rate improves markedly – as high as 85% – if the condition is caught sooner.

In the current study, the researchers first exposed C. elegans to the urine of 83 patients from cancer centers across Japan who had various stages of pancreatic cancer before and after undergoing surgical resection. Using an assay, which takes 30 minutes and 50-100 nematodes per test, C. elegans showed significantly higher chemotaxis toward preoperative urine, compared with postoperative urine.

In a second, closed-labeled arm, the nematodes were exposed to the urine of 28 randomized participants – 11 of whom had early-stage pancreatic cancer (0 or IA), plus 17 healthy volunteers. In this instance as well, C. elegans showed significantly higher chemotaxis in patients with early-stage pancreatic cancer, compared with healthy volunteers (P = .034). 

According to the authors, C. elegans “had a higher sensitivity for detecting early pancreatic cancer compared to existing diagnostic markers.” And while this strategy needs to be further validated, they believe early detection of pancreatic cancer using C. elegans “can certainly be expected in the near future.”

The study aligns with previous research, showing that wild-type C. elegans are sensitive to scent and that these critters can smell cancer. Other studies have also found that sniffer canines can detect volatile organic compounds – including biomarkers of certain cancers – in the urine and breath of cancer patients. But training an adequate number of these canines for the clinic isn’t feasible, while C. elegans are far more compact and affordable.

According to Dr. Zaidi, a scent test using C. elegans “seems pretty feasible” and cost effective, but whether this approach will “change our care has yet to be determined.”

The authors, for instance, don’t specify how the scent test will be used, though Dr. Zaidi suspects it would be most relevant for following patients with a higher risk of pancreatic cancer. Alternatively, it could be used as a screening test, but that’s a massive undertaking and “this is way too early to tell if it’s going to be helpful to use this test on a broad scale,” Dr. Zaidi said.

To validate the approach, researchers would also need to know what exactly the C. elegans are smelling and to test it in a much larger number of patients, Dr. Zaidi said. The mere 11 patients with cancer in the blinded portion of the study are not sufficient to draw any major conclusions.

The study also claims a high sensitivity, but what about specificity, Dr. Zaidi said. In other words, are there a lot of false positives? 

In addition, a deeper look at the participants shows the two groups – early PDAC and healthy volunteers – were not adequately balanced. The median age of the diseased patients was 70, and the healthy volunteers was 39.

“This is a big difference,” Eithne Costello, PhD, professor of molecular oncology at Liverpool (England) University, said in an interview. “It [also] appears the controls are all of one sex (either all male or all female), while the cancer group is mixed.”

The authors attributed these shortcomings to the small population they had to work with: There simply aren’t many patients whose pancreatic cancer is detected early. Dr. Zaidi agreed that patients with pancreatic cancer stage 0 or IA are extremely difficult to come by.

Even still, researchers need to understand the mechanisms behind this approach and see it work in a much larger group of patients, Dr. Zaidi said.

The study was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science, and Technology. The authors reported institutional endowments received from Hirotsu Bio Science, Kinshu-kai Medical, IDEA Consultants, Ono Pharmaceutical, and others. Two coauthors are employees of Hirotsu Bio Science.

A version of this article first appeared on Medscape.com.

Near-infrared light delivered to the brain using a specially designed helmet appears to improve memory, motor function, and processing skills in cognitively healthy older adults, in new findings that suggest potential benefit in patients with dementia.

Studies in animals and people have shown “many positive effects” with near-infrared transcranial photobiomodulation therapy (PBM-T), study investigator Paul Chazot, PhD, department of biosciences, Durham University, United Kingdom, told this news organization.

For example, PBM-T has been shown to increase blood circulation (which keeps the brain well oxygenated), boost mitochondria function in neurons, protect neurons from oxidative stress, and help maintain neuronal connectivity, Dr. Chazot explained.

PBM-T has also been shown to reduce amyloid and phosphorylated tau load, pathological signs of Alzheimer’s disease.

“All these in combination improve memory performance and mobility,” Dr. Chazot said.

The study was published online October 18 in Photobiomodulation, Photomedicine and Laser Surgery. 
 

Promising early data

In the study, 14 healthy adults, aged 45 to 70 years, received 6 minutes of transcranial PBM-T twice daily at a wavelength of 1,068 nanometers over 4 weeks. PBM-T was delivered via a helmet that comprised 14 air-cooled light emitting diode panel arrays. A control group of 13 adults used a sham PBM-T helmet.

Before and after active and sham treatment, all participants completed the automated neuropsychological assessment metrics (ANAM) – a computer-based tool designed to detect speed and accuracy of attention, memory, and thinking ability.

According to the research team, compared with sham PBM-T, those receiving active PBM-T showed significant improvement in motor function (finger tapping), working memory, delayed memory, and brain processing speed, the research team reports. No adverse effects were reported.

“This study complements our other recent studies, which showed improvement in memory performance with no obvious side effects,” said Dr. Chazot.

“While this is a pilot study and more research is needed, there are promising indications that therapy involving infrared light might also be beneficial for people living with dementia, and this is worth exploring,” Dr. Chazot added in a news release.

The PBM-T helmet was devised by first author Gordon Dougal, MBChB, of Maculume in the U.K., and a general practitioner based in Durham.

A recent study by Mr. Dougal, Dr. Chazot, and collaborators in the United States provides early evidence that PBM-T can improve memory in adults with dementia.

In that study, 39 patients received 6 minutes of PBM-T twice a day for 8 weeks, alongside a control group of 17 patients who received sham PBM-T.

After 8 weeks, there was about a 20% improvement in Mini-Mental State Exam (MMSE) scores in the active PBM-T group compared with roughly a 6% improvement in the control group, the researchers report in the journal Cureus.
 

More research needed

Reached for comment, Rebecca Edelmayer, PhD, Alzheimer’s Association senior director of scientific engagement, said using light to stimulate the brain is “an emerging technology.”

“However, this is a very small study in healthy volunteers, therefore we don’t know from this work alone if this approach would work as an intervention or reduce [the] risk of cognitive decline,” Dr. Edelmayer told this news organization.

“That being said, we’re starting to see companies looking at similar, noninvasive methods of stimulating the brain. For example, brain stimulation devices have been applied to other neurodegenerative diseases like Parkinson’s to try to prevent degeneration of brain cells,” Dr. Edelmayer noted. 

She said more research is needed to understand how photobiomodulation might be used as a therapy or prevention for cognitive decline and dementia.

“Specifically, we need to understand what parts of the brain need to be targeted and at what point(s) in the disease course this treatment would be most impactful. If proven to be effective, this could possibly be part of an approach that’s combined with other treatments, like drugs and lifestyle interventions,” said Dr. Edelmayer.

The Alzheimer’s Association is funding a number of projects looking at noninvasive treatments for Alzheimer’s disease, including two clinical trials looking at deep brain stimulation and photobiomodulation.

Maculume provided funding for the study. Mr. Dougal is a majority shareholder in the company, which manufactures the helmet device used in the study. Dr. Chazot, study co-authors, and Dr. Edelmayer have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Near-infrared light delivered to the brain using a specially designed helmet appears to improve memory, motor function, and processing skills in cognitively healthy older adults, in new findings that suggest potential benefit in patients with dementia.

Studies in animals and people have shown “many positive effects” with near-infrared transcranial photobiomodulation therapy (PBM-T), study investigator Paul Chazot, PhD, department of biosciences, Durham University, United Kingdom, told this news organization.

For example, PBM-T has been shown to increase blood circulation (which keeps the brain well oxygenated), boost mitochondria function in neurons, protect neurons from oxidative stress, and help maintain neuronal connectivity, Dr. Chazot explained.

PBM-T has also been shown to reduce amyloid and phosphorylated tau load, pathological signs of Alzheimer’s disease.

“All these in combination improve memory performance and mobility,” Dr. Chazot said.

The study was published online October 18 in Photobiomodulation, Photomedicine and Laser Surgery. 
 

Promising early data

In the study, 14 healthy adults, aged 45 to 70 years, received 6 minutes of transcranial PBM-T twice daily at a wavelength of 1,068 nanometers over 4 weeks. PBM-T was delivered via a helmet that comprised 14 air-cooled light emitting diode panel arrays. A control group of 13 adults used a sham PBM-T helmet.

Before and after active and sham treatment, all participants completed the automated neuropsychological assessment metrics (ANAM) – a computer-based tool designed to detect speed and accuracy of attention, memory, and thinking ability.

According to the research team, compared with sham PBM-T, those receiving active PBM-T showed significant improvement in motor function (finger tapping), working memory, delayed memory, and brain processing speed, the research team reports. No adverse effects were reported.

“This study complements our other recent studies, which showed improvement in memory performance with no obvious side effects,” said Dr. Chazot.

“While this is a pilot study and more research is needed, there are promising indications that therapy involving infrared light might also be beneficial for people living with dementia, and this is worth exploring,” Dr. Chazot added in a news release.

The PBM-T helmet was devised by first author Gordon Dougal, MBChB, of Maculume in the U.K., and a general practitioner based in Durham.

A recent study by Mr. Dougal, Dr. Chazot, and collaborators in the United States provides early evidence that PBM-T can improve memory in adults with dementia.

In that study, 39 patients received 6 minutes of PBM-T twice a day for 8 weeks, alongside a control group of 17 patients who received sham PBM-T.

After 8 weeks, there was about a 20% improvement in Mini-Mental State Exam (MMSE) scores in the active PBM-T group compared with roughly a 6% improvement in the control group, the researchers report in the journal Cureus.
 

More research needed

Reached for comment, Rebecca Edelmayer, PhD, Alzheimer’s Association senior director of scientific engagement, said using light to stimulate the brain is “an emerging technology.”

“However, this is a very small study in healthy volunteers, therefore we don’t know from this work alone if this approach would work as an intervention or reduce [the] risk of cognitive decline,” Dr. Edelmayer told this news organization.

“That being said, we’re starting to see companies looking at similar, noninvasive methods of stimulating the brain. For example, brain stimulation devices have been applied to other neurodegenerative diseases like Parkinson’s to try to prevent degeneration of brain cells,” Dr. Edelmayer noted. 

She said more research is needed to understand how photobiomodulation might be used as a therapy or prevention for cognitive decline and dementia.

“Specifically, we need to understand what parts of the brain need to be targeted and at what point(s) in the disease course this treatment would be most impactful. If proven to be effective, this could possibly be part of an approach that’s combined with other treatments, like drugs and lifestyle interventions,” said Dr. Edelmayer.

The Alzheimer’s Association is funding a number of projects looking at noninvasive treatments for Alzheimer’s disease, including two clinical trials looking at deep brain stimulation and photobiomodulation.

Maculume provided funding for the study. Mr. Dougal is a majority shareholder in the company, which manufactures the helmet device used in the study. Dr. Chazot, study co-authors, and Dr. Edelmayer have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Near-infrared light delivered to the brain using a specially designed helmet appears to improve memory, motor function, and processing skills in cognitively healthy older adults, in new findings that suggest potential benefit in patients with dementia.

Studies in animals and people have shown “many positive effects” with near-infrared transcranial photobiomodulation therapy (PBM-T), study investigator Paul Chazot, PhD, department of biosciences, Durham University, United Kingdom, told this news organization.

For example, PBM-T has been shown to increase blood circulation (which keeps the brain well oxygenated), boost mitochondria function in neurons, protect neurons from oxidative stress, and help maintain neuronal connectivity, Dr. Chazot explained.

PBM-T has also been shown to reduce amyloid and phosphorylated tau load, pathological signs of Alzheimer’s disease.

“All these in combination improve memory performance and mobility,” Dr. Chazot said.

The study was published online October 18 in Photobiomodulation, Photomedicine and Laser Surgery. 
 

Promising early data

In the study, 14 healthy adults, aged 45 to 70 years, received 6 minutes of transcranial PBM-T twice daily at a wavelength of 1,068 nanometers over 4 weeks. PBM-T was delivered via a helmet that comprised 14 air-cooled light emitting diode panel arrays. A control group of 13 adults used a sham PBM-T helmet.

Before and after active and sham treatment, all participants completed the automated neuropsychological assessment metrics (ANAM) – a computer-based tool designed to detect speed and accuracy of attention, memory, and thinking ability.

According to the research team, compared with sham PBM-T, those receiving active PBM-T showed significant improvement in motor function (finger tapping), working memory, delayed memory, and brain processing speed, the research team reports. No adverse effects were reported.

“This study complements our other recent studies, which showed improvement in memory performance with no obvious side effects,” said Dr. Chazot.

“While this is a pilot study and more research is needed, there are promising indications that therapy involving infrared light might also be beneficial for people living with dementia, and this is worth exploring,” Dr. Chazot added in a news release.

The PBM-T helmet was devised by first author Gordon Dougal, MBChB, of Maculume in the U.K., and a general practitioner based in Durham.

A recent study by Mr. Dougal, Dr. Chazot, and collaborators in the United States provides early evidence that PBM-T can improve memory in adults with dementia.

In that study, 39 patients received 6 minutes of PBM-T twice a day for 8 weeks, alongside a control group of 17 patients who received sham PBM-T.

After 8 weeks, there was about a 20% improvement in Mini-Mental State Exam (MMSE) scores in the active PBM-T group compared with roughly a 6% improvement in the control group, the researchers report in the journal Cureus.
 

More research needed

Reached for comment, Rebecca Edelmayer, PhD, Alzheimer’s Association senior director of scientific engagement, said using light to stimulate the brain is “an emerging technology.”

“However, this is a very small study in healthy volunteers, therefore we don’t know from this work alone if this approach would work as an intervention or reduce [the] risk of cognitive decline,” Dr. Edelmayer told this news organization.

“That being said, we’re starting to see companies looking at similar, noninvasive methods of stimulating the brain. For example, brain stimulation devices have been applied to other neurodegenerative diseases like Parkinson’s to try to prevent degeneration of brain cells,” Dr. Edelmayer noted. 

She said more research is needed to understand how photobiomodulation might be used as a therapy or prevention for cognitive decline and dementia.

“Specifically, we need to understand what parts of the brain need to be targeted and at what point(s) in the disease course this treatment would be most impactful. If proven to be effective, this could possibly be part of an approach that’s combined with other treatments, like drugs and lifestyle interventions,” said Dr. Edelmayer.

The Alzheimer’s Association is funding a number of projects looking at noninvasive treatments for Alzheimer’s disease, including two clinical trials looking at deep brain stimulation and photobiomodulation.

Maculume provided funding for the study. Mr. Dougal is a majority shareholder in the company, which manufactures the helmet device used in the study. Dr. Chazot, study co-authors, and Dr. Edelmayer have disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com.

To the Editor:

Lymphangioma circumscriptum (LC) is a benign malformation of the lymphatic system.¹ It is postulated to arise from abnormal lymphatic cisterns, and it grows separately from the normal lymphatic system. These cisterns are connected to malformed dermal lymphatic channels, and the contraction of smooth muscles lining cisterns will cause dilatation of connected lymphatic channels in the papillary dermis due to back pressure,^1,2 which causes a classic LC manifestation characterized by multiple translucent, sometimes red-brown, small vesicles grouped together. Lymphangioma circumscriptum can be difficult to differentiate from molluscum contagiosum (MC) due to the similar morphology.¹ We present a notable case of MC superimposed on LC.

A 6-year-old girl presented with multiple grouped, clear, vesicular papules on the right buttock of 18 months’ duration. Some of the papules showed tiny whitish pearl-like particles on the top (Figure 1). Similar lesions were not present elsewhere on the body. She had no underlying disease and did not have a history of procedure, edema, or malformation of the lower extremities. Histopathology from one of the lesions showed dilated cystic lymphatic spaces in the papillary dermis lined with flattened endothelium and cup-shaped downward proliferation of the epidermis with presence of large intracytoplasmic inclusion bodies—features of both LC and MC (Figure 2). We waited 4 additional months for the MC lesions to self-resolve, but they persisted. The patient’s mother strongly requested for their removal, and the residual MC lesions were carefully removed by CO₂ laser. To prevent unnecessary physical damage to underlying LC lesions and minimize scarring, we opted to use the CO₂ laser and not simple curettage. She currently is under periodic observation with no signs of clinical recurrence of MC, but the LC lesions naturally persisted.

Due to its vesicular and sometimes warty appearance, LC can sometimes be hard to differentiate from MC. In one report, a vesicular plaquelike lesion on the trunk initially was misdiagnosed and treated as MC but was histologically confirmed as LC several years later.³ Our case demonstrates the coexistence of MC and LC. Although this phenomenon may be coincidental, we have not noticed any additional MC lesions on the body and MC only existed over the LC lesions, implying a possible pathophysiologic relationship. It is unlikely that MC might have preceded the development of LC. Although acquired LC exists, it has mostly been reported in the genital region of patients with conditions leading to lymphatic obstruction such as surgery, radiation therapy, malignancy, or serious infections.⁴ Because our patient developed lesions at an early age without any remarkable medical history, it is likely that she had congenital LC that was secondarily infected by the MC virus. Vesicular lesions in LC are known to rupture easily and may serve as a vulnerable entry site for pathogens. Subsequent secondary bacterial infections are common, with Staphylococcus aureus being the most prominent entity.¹ However, secondary viral infection rarely is reported. It is possible that the abnormally dilated lymphatic channels of LC that lack communication with the normal lymphatic system have contributed to an LC site-specific vulnerability to MC virus. Further studies and subsequent reports are required to confirm this hypothesis.

To the Editor:

Lymphangioma circumscriptum (LC) is a benign malformation of the lymphatic system.¹ It is postulated to arise from abnormal lymphatic cisterns, and it grows separately from the normal lymphatic system. These cisterns are connected to malformed dermal lymphatic channels, and the contraction of smooth muscles lining cisterns will cause dilatation of connected lymphatic channels in the papillary dermis due to back pressure,^1,2 which causes a classic LC manifestation characterized by multiple translucent, sometimes red-brown, small vesicles grouped together. Lymphangioma circumscriptum can be difficult to differentiate from molluscum contagiosum (MC) due to the similar morphology.¹ We present a notable case of MC superimposed on LC.

A 6-year-old girl presented with multiple grouped, clear, vesicular papules on the right buttock of 18 months’ duration. Some of the papules showed tiny whitish pearl-like particles on the top (Figure 1). Similar lesions were not present elsewhere on the body. She had no underlying disease and did not have a history of procedure, edema, or malformation of the lower extremities. Histopathology from one of the lesions showed dilated cystic lymphatic spaces in the papillary dermis lined with flattened endothelium and cup-shaped downward proliferation of the epidermis with presence of large intracytoplasmic inclusion bodies—features of both LC and MC (Figure 2). We waited 4 additional months for the MC lesions to self-resolve, but they persisted. The patient’s mother strongly requested for their removal, and the residual MC lesions were carefully removed by CO₂ laser. To prevent unnecessary physical damage to underlying LC lesions and minimize scarring, we opted to use the CO₂ laser and not simple curettage. She currently is under periodic observation with no signs of clinical recurrence of MC, but the LC lesions naturally persisted.

Due to its vesicular and sometimes warty appearance, LC can sometimes be hard to differentiate from MC. In one report, a vesicular plaquelike lesion on the trunk initially was misdiagnosed and treated as MC but was histologically confirmed as LC several years later.³ Our case demonstrates the coexistence of MC and LC. Although this phenomenon may be coincidental, we have not noticed any additional MC lesions on the body and MC only existed over the LC lesions, implying a possible pathophysiologic relationship. It is unlikely that MC might have preceded the development of LC. Although acquired LC exists, it has mostly been reported in the genital region of patients with conditions leading to lymphatic obstruction such as surgery, radiation therapy, malignancy, or serious infections.⁴ Because our patient developed lesions at an early age without any remarkable medical history, it is likely that she had congenital LC that was secondarily infected by the MC virus. Vesicular lesions in LC are known to rupture easily and may serve as a vulnerable entry site for pathogens. Subsequent secondary bacterial infections are common, with Staphylococcus aureus being the most prominent entity.¹ However, secondary viral infection rarely is reported. It is possible that the abnormally dilated lymphatic channels of LC that lack communication with the normal lymphatic system have contributed to an LC site-specific vulnerability to MC virus. Further studies and subsequent reports are required to confirm this hypothesis.

To the Editor:

Lymphangioma circumscriptum (LC) is a benign malformation of the lymphatic system.¹ It is postulated to arise from abnormal lymphatic cisterns, and it grows separately from the normal lymphatic system. These cisterns are connected to malformed dermal lymphatic channels, and the contraction of smooth muscles lining cisterns will cause dilatation of connected lymphatic channels in the papillary dermis due to back pressure,^1,2 which causes a classic LC manifestation characterized by multiple translucent, sometimes red-brown, small vesicles grouped together. Lymphangioma circumscriptum can be difficult to differentiate from molluscum contagiosum (MC) due to the similar morphology.¹ We present a notable case of MC superimposed on LC.

A 6-year-old girl presented with multiple grouped, clear, vesicular papules on the right buttock of 18 months’ duration. Some of the papules showed tiny whitish pearl-like particles on the top (Figure 1). Similar lesions were not present elsewhere on the body. She had no underlying disease and did not have a history of procedure, edema, or malformation of the lower extremities. Histopathology from one of the lesions showed dilated cystic lymphatic spaces in the papillary dermis lined with flattened endothelium and cup-shaped downward proliferation of the epidermis with presence of large intracytoplasmic inclusion bodies—features of both LC and MC (Figure 2). We waited 4 additional months for the MC lesions to self-resolve, but they persisted. The patient’s mother strongly requested for their removal, and the residual MC lesions were carefully removed by CO₂ laser. To prevent unnecessary physical damage to underlying LC lesions and minimize scarring, we opted to use the CO₂ laser and not simple curettage. She currently is under periodic observation with no signs of clinical recurrence of MC, but the LC lesions naturally persisted.

Due to its vesicular and sometimes warty appearance, LC can sometimes be hard to differentiate from MC. In one report, a vesicular plaquelike lesion on the trunk initially was misdiagnosed and treated as MC but was histologically confirmed as LC several years later.³ Our case demonstrates the coexistence of MC and LC. Although this phenomenon may be coincidental, we have not noticed any additional MC lesions on the body and MC only existed over the LC lesions, implying a possible pathophysiologic relationship. It is unlikely that MC might have preceded the development of LC. Although acquired LC exists, it has mostly been reported in the genital region of patients with conditions leading to lymphatic obstruction such as surgery, radiation therapy, malignancy, or serious infections.⁴ Because our patient developed lesions at an early age without any remarkable medical history, it is likely that she had congenital LC that was secondarily infected by the MC virus. Vesicular lesions in LC are known to rupture easily and may serve as a vulnerable entry site for pathogens. Subsequent secondary bacterial infections are common, with Staphylococcus aureus being the most prominent entity.¹ However, secondary viral infection rarely is reported. It is possible that the abnormally dilated lymphatic channels of LC that lack communication with the normal lymphatic system have contributed to an LC site-specific vulnerability to MC virus. Further studies and subsequent reports are required to confirm this hypothesis.