My group in Rochester, N.Y., examined the current pneumococcal serotypes causing AOM in children. From our data, we can determine the PCV13 vaccine types that escape prevention and cause AOM and understand what effect to expect from the new pneumococcal conjugate vaccines (PCVs) that will be coming soon. There are limited data from middle ear fluid (MEF) cultures on which to base such analyses. Tympanocentesis is the preferred method for securing MEF for culture and our group is unique in providing such data to the Centers for Disease Control and publishing our results on a periodic basis to inform clinicians.

Pneumococci are the second most common cause of acute otitis media (AOM) since the introduction of pneumococcal conjugate vaccines (PCVs) more than 2 decades ago.^1,2 Pneumococcal AOM causes more severe acute disease and more often causes suppurative complications than Haemophilus influenzae, which is the most common cause of AOM. Prevention of pneumococcal AOM will be a highly relevant contributor to cost-effectiveness analyses for the anticipated introduction of PCV15 (Merck) and PCV20 (Pfizer). Both PCV15 and PCV20 have been licensed for adult use; PCV15 licensure for infants and children occurred in June 2022 for invasive pneumococcal disease and is anticipated in the near future for PCV20. They are improvements over PCV13 because they add serotypes that cause invasive pneumococcal diseases, although less so for prevention of AOM, on the basis of our data.

Nasopharyngeal colonization is a necessary pathogenic step in progression to pneumococcal disease. However, not all strains of pneumococci expressing different capsular serotypes are equally virulent and likely to cause disease. In PCV-vaccinated populations, vaccine pressure and antibiotic resistance drive PCV serotype replacement with nonvaccine serotypes (NVTs), gradually reducing the net effectiveness of the vaccines. Therefore, knowledge of prevalent NVTs colonizing the nasopharynx identifies future pneumococcal serotypes most likely to emerge as pathogenic.

We published an effectiveness study of PCV13.³ A relative reduction of 86% in AOM caused by strains expressing PCV13 serotypes was observed in the first few years after PCV13 introduction. The greatest reduction in MEF samples was in serotype 19A, with a relative reduction of 91%. However, over time the vaccine type efficacy of PCV13 against MEF-positive pneumococcal AOM has eroded. There was no clear efficacy against serotype 3, and we still observed cases of serotype 19A and 19F. PCV13 vaccine failures have been even more frequent in Europe (nearly 30% of pneumococcal AOM in Europe is caused by vaccine serotypes) than our data indicate, where about 10% of AOM is caused by PCV13 serotypes.

In our most recent publication covering 2015-2019, we described results from 589 children, aged 6-36 months, from whom we collected 2,042 nasopharyngeal samples.^2,4 During AOM, 495 MEF samples from 319 AOM-infected children were collected (during bilateral infections, tympanocentesis was performed in both ears). Whether bacteria were isolated was based per AOM case, not per tap. The average age of children with AOM was 15 months (range 6-31 months). The three most prevalent nasopharyngeal pneumococcal serotypes were 35B, 23B, and 15B/C. Serotype 35B was the most common at AOM visits in both the nasopharynx and MEF samples followed by serotype 15B/C. Nonsusceptibility among pneumococci to penicillin, azithromycin, and multiple other antibiotics was high. Increasing resistance to ceftriaxone was also observed.

Based on our results, if PCV15 (PCV13 + 22F and 33F) effectiveness is identical to PCV13 for the included serotypes and 100% efficacy for the added serotypes is presumed, PCV15 will reduce pneumococcal AOMs by 8%, pneumococcal nasopharyngeal colonization events at onset of AOM by 6%, and pneumococcal nasopharyngeal colonization events during health by 3%. As for the projected reductions brought about by PCV20 (PCV15 + 8, 10A, 11A, 12F, and 15B), presuming serotype 15B is efficacious against serotype 15C and 100% efficacy for the added serotypes, PCV20 will reduce pneumococcal AOMs by 22%, pneumococcal nasopharyngeal colonization events at onset of AOM by 20%, and pneumococcal nasopharyngeal colonization events during health by 3% (Figure).

The CDC estimated that, in 2004, pneumococcal disease in the United States caused 4 million illness episodes, 22,000 deaths, 445,000 hospitalizations, 774,000 emergency department visits, 5 million outpatient visits, and 4.1 million outpatient antibiotic prescriptions. Direct medical costs totaled $3.5 billion. Pneumonia (866,000 cases) accounted for 22% of all cases and 72% of pneumococcal costs. AOM and sinusitis (1.5 million cases each) composed 75% of cases and 16% of direct medical costs.⁵ However, if indirect costs are taken into account, such as work loss by parents of young children, the cost of pneumococcal disease caused by AOM alone may exceed $6 billion annually⁶ and become dominant in the cost-effectiveness analysis in high-income countries.

Despite widespread use of PCV13, Pneumococcus has shown its resilience under vaccine pressure such that the organism remains a very common AOM pathogen. All-cause AOM has declined modestly and pneumococcal AOM caused by the specific serotypes in PCVs has declined dramatically since the introduction of PCVs. However, the burden of pneumococcal AOM disease is still considerable.

The notion that strains expressing serotypes that were not included in PCV7 were less virulent was proven wrong within a few years after introduction of PCV7, with the emergence of strains expressing serotype 19A, and others. The same cycle occurred after introduction of PCV13. It appears to take about 4 years after introduction of a PCV before peak effectiveness is achieved – which then begins to erode with emergence of NVTs. First, the NVTs are observed to colonize the nasopharynx as commensals and then from among those strains new disease-causing strains emerge.

At the most recent meeting of the International Society of Pneumococci and Pneumococcal Diseases in Toronto in June, many presentations focused on the fact that PCVs elicit highly effective protective serotype-specific antibodies to the capsular polysaccharides of included types. However, 100 serotypes are known. The limitations of PCVs are becoming increasingly apparent. They are costly and consume a large portion of the Vaccines for Children budget. Children in the developing world remain largely unvaccinated because of the high cost. NVTs that have emerged to cause disease vary by country, vary by adult vs. pediatric populations, and are dynamically changing year to year. Forthcoming PCVs of 15 and 20 serotypes will be even more costly than PCV13, will not include many newly emerged serotypes, and will probably likewise encounter “serotype replacement” because of high immune evasion by pneumococci.

When Merck and Pfizer made their decisions on serotype composition for PCV15 and PCV20, respectively, they were based on available data at the time regarding predominant serotypes causing invasive pneumococcal disease in countries that had the best data and would be the market for their products. However, from the time of the decision to licensure of vaccine is many years, and during that time the pneumococcal serotypes have changed, more so for AOM, and I predict more change will occur in the future.

In the past 3 years, Dr. Pichichero has received honoraria from Merck to attend 1-day consulting meetings and his institution has received investigator-initiated research grants to study aspects of PCV15. In the past 3 years, he was reimbursed for expenses to attend the ISPPD meeting in Toronto to present a poster on potential efficacy of PCV20 to prevent complicated AOM.

Dr. Pichichero is a specialist in pediatric infectious diseases, Center for Infectious Diseases and Immunology, and director of the Research Institute, at Rochester (N.Y.) General Hospital.

References

1. Kaur R et al. Pediatrics. 2017;140(3).

2. Kaur R et al. Eur J Clin Microbiol Infect Dis. 2021;41:37-44..

3. Pichichero M et al. Lancet Child Adolesc Health. 2018;2(8):561-8.

4. Zhou F et al. Pediatrics. 2008;121(2):253-60.

5. Huang SS et al. Vaccine. 2011;29(18):3398-412.

6. Casey JR and Pichichero ME. Clin Pediatr (Phila). 2014;53(9):865-73. .
 

My group in Rochester, N.Y., examined the current pneumococcal serotypes causing AOM in children. From our data, we can determine the PCV13 vaccine types that escape prevention and cause AOM and understand what effect to expect from the new pneumococcal conjugate vaccines (PCVs) that will be coming soon. There are limited data from middle ear fluid (MEF) cultures on which to base such analyses. Tympanocentesis is the preferred method for securing MEF for culture and our group is unique in providing such data to the Centers for Disease Control and publishing our results on a periodic basis to inform clinicians.

Pneumococci are the second most common cause of acute otitis media (AOM) since the introduction of pneumococcal conjugate vaccines (PCVs) more than 2 decades ago.^1,2 Pneumococcal AOM causes more severe acute disease and more often causes suppurative complications than Haemophilus influenzae, which is the most common cause of AOM. Prevention of pneumococcal AOM will be a highly relevant contributor to cost-effectiveness analyses for the anticipated introduction of PCV15 (Merck) and PCV20 (Pfizer). Both PCV15 and PCV20 have been licensed for adult use; PCV15 licensure for infants and children occurred in June 2022 for invasive pneumococcal disease and is anticipated in the near future for PCV20. They are improvements over PCV13 because they add serotypes that cause invasive pneumococcal diseases, although less so for prevention of AOM, on the basis of our data.

Nasopharyngeal colonization is a necessary pathogenic step in progression to pneumococcal disease. However, not all strains of pneumococci expressing different capsular serotypes are equally virulent and likely to cause disease. In PCV-vaccinated populations, vaccine pressure and antibiotic resistance drive PCV serotype replacement with nonvaccine serotypes (NVTs), gradually reducing the net effectiveness of the vaccines. Therefore, knowledge of prevalent NVTs colonizing the nasopharynx identifies future pneumococcal serotypes most likely to emerge as pathogenic.

We published an effectiveness study of PCV13.³ A relative reduction of 86% in AOM caused by strains expressing PCV13 serotypes was observed in the first few years after PCV13 introduction. The greatest reduction in MEF samples was in serotype 19A, with a relative reduction of 91%. However, over time the vaccine type efficacy of PCV13 against MEF-positive pneumococcal AOM has eroded. There was no clear efficacy against serotype 3, and we still observed cases of serotype 19A and 19F. PCV13 vaccine failures have been even more frequent in Europe (nearly 30% of pneumococcal AOM in Europe is caused by vaccine serotypes) than our data indicate, where about 10% of AOM is caused by PCV13 serotypes.

In our most recent publication covering 2015-2019, we described results from 589 children, aged 6-36 months, from whom we collected 2,042 nasopharyngeal samples.^2,4 During AOM, 495 MEF samples from 319 AOM-infected children were collected (during bilateral infections, tympanocentesis was performed in both ears). Whether bacteria were isolated was based per AOM case, not per tap. The average age of children with AOM was 15 months (range 6-31 months). The three most prevalent nasopharyngeal pneumococcal serotypes were 35B, 23B, and 15B/C. Serotype 35B was the most common at AOM visits in both the nasopharynx and MEF samples followed by serotype 15B/C. Nonsusceptibility among pneumococci to penicillin, azithromycin, and multiple other antibiotics was high. Increasing resistance to ceftriaxone was also observed.

Based on our results, if PCV15 (PCV13 + 22F and 33F) effectiveness is identical to PCV13 for the included serotypes and 100% efficacy for the added serotypes is presumed, PCV15 will reduce pneumococcal AOMs by 8%, pneumococcal nasopharyngeal colonization events at onset of AOM by 6%, and pneumococcal nasopharyngeal colonization events during health by 3%. As for the projected reductions brought about by PCV20 (PCV15 + 8, 10A, 11A, 12F, and 15B), presuming serotype 15B is efficacious against serotype 15C and 100% efficacy for the added serotypes, PCV20 will reduce pneumococcal AOMs by 22%, pneumococcal nasopharyngeal colonization events at onset of AOM by 20%, and pneumococcal nasopharyngeal colonization events during health by 3% (Figure).

The CDC estimated that, in 2004, pneumococcal disease in the United States caused 4 million illness episodes, 22,000 deaths, 445,000 hospitalizations, 774,000 emergency department visits, 5 million outpatient visits, and 4.1 million outpatient antibiotic prescriptions. Direct medical costs totaled $3.5 billion. Pneumonia (866,000 cases) accounted for 22% of all cases and 72% of pneumococcal costs. AOM and sinusitis (1.5 million cases each) composed 75% of cases and 16% of direct medical costs.⁵ However, if indirect costs are taken into account, such as work loss by parents of young children, the cost of pneumococcal disease caused by AOM alone may exceed $6 billion annually⁶ and become dominant in the cost-effectiveness analysis in high-income countries.

Despite widespread use of PCV13, Pneumococcus has shown its resilience under vaccine pressure such that the organism remains a very common AOM pathogen. All-cause AOM has declined modestly and pneumococcal AOM caused by the specific serotypes in PCVs has declined dramatically since the introduction of PCVs. However, the burden of pneumococcal AOM disease is still considerable.

The notion that strains expressing serotypes that were not included in PCV7 were less virulent was proven wrong within a few years after introduction of PCV7, with the emergence of strains expressing serotype 19A, and others. The same cycle occurred after introduction of PCV13. It appears to take about 4 years after introduction of a PCV before peak effectiveness is achieved – which then begins to erode with emergence of NVTs. First, the NVTs are observed to colonize the nasopharynx as commensals and then from among those strains new disease-causing strains emerge.

At the most recent meeting of the International Society of Pneumococci and Pneumococcal Diseases in Toronto in June, many presentations focused on the fact that PCVs elicit highly effective protective serotype-specific antibodies to the capsular polysaccharides of included types. However, 100 serotypes are known. The limitations of PCVs are becoming increasingly apparent. They are costly and consume a large portion of the Vaccines for Children budget. Children in the developing world remain largely unvaccinated because of the high cost. NVTs that have emerged to cause disease vary by country, vary by adult vs. pediatric populations, and are dynamically changing year to year. Forthcoming PCVs of 15 and 20 serotypes will be even more costly than PCV13, will not include many newly emerged serotypes, and will probably likewise encounter “serotype replacement” because of high immune evasion by pneumococci.

When Merck and Pfizer made their decisions on serotype composition for PCV15 and PCV20, respectively, they were based on available data at the time regarding predominant serotypes causing invasive pneumococcal disease in countries that had the best data and would be the market for their products. However, from the time of the decision to licensure of vaccine is many years, and during that time the pneumococcal serotypes have changed, more so for AOM, and I predict more change will occur in the future.

In the past 3 years, Dr. Pichichero has received honoraria from Merck to attend 1-day consulting meetings and his institution has received investigator-initiated research grants to study aspects of PCV15. In the past 3 years, he was reimbursed for expenses to attend the ISPPD meeting in Toronto to present a poster on potential efficacy of PCV20 to prevent complicated AOM.

Dr. Pichichero is a specialist in pediatric infectious diseases, Center for Infectious Diseases and Immunology, and director of the Research Institute, at Rochester (N.Y.) General Hospital.

References

1. Kaur R et al. Pediatrics. 2017;140(3).

2. Kaur R et al. Eur J Clin Microbiol Infect Dis. 2021;41:37-44..

3. Pichichero M et al. Lancet Child Adolesc Health. 2018;2(8):561-8.

4. Zhou F et al. Pediatrics. 2008;121(2):253-60.

5. Huang SS et al. Vaccine. 2011;29(18):3398-412.

6. Casey JR and Pichichero ME. Clin Pediatr (Phila). 2014;53(9):865-73. .
 

My group in Rochester, N.Y., examined the current pneumococcal serotypes causing AOM in children. From our data, we can determine the PCV13 vaccine types that escape prevention and cause AOM and understand what effect to expect from the new pneumococcal conjugate vaccines (PCVs) that will be coming soon. There are limited data from middle ear fluid (MEF) cultures on which to base such analyses. Tympanocentesis is the preferred method for securing MEF for culture and our group is unique in providing such data to the Centers for Disease Control and publishing our results on a periodic basis to inform clinicians.

Pneumococci are the second most common cause of acute otitis media (AOM) since the introduction of pneumococcal conjugate vaccines (PCVs) more than 2 decades ago.^1,2 Pneumococcal AOM causes more severe acute disease and more often causes suppurative complications than Haemophilus influenzae, which is the most common cause of AOM. Prevention of pneumococcal AOM will be a highly relevant contributor to cost-effectiveness analyses for the anticipated introduction of PCV15 (Merck) and PCV20 (Pfizer). Both PCV15 and PCV20 have been licensed for adult use; PCV15 licensure for infants and children occurred in June 2022 for invasive pneumococcal disease and is anticipated in the near future for PCV20. They are improvements over PCV13 because they add serotypes that cause invasive pneumococcal diseases, although less so for prevention of AOM, on the basis of our data.

Nasopharyngeal colonization is a necessary pathogenic step in progression to pneumococcal disease. However, not all strains of pneumococci expressing different capsular serotypes are equally virulent and likely to cause disease. In PCV-vaccinated populations, vaccine pressure and antibiotic resistance drive PCV serotype replacement with nonvaccine serotypes (NVTs), gradually reducing the net effectiveness of the vaccines. Therefore, knowledge of prevalent NVTs colonizing the nasopharynx identifies future pneumococcal serotypes most likely to emerge as pathogenic.

We published an effectiveness study of PCV13.³ A relative reduction of 86% in AOM caused by strains expressing PCV13 serotypes was observed in the first few years after PCV13 introduction. The greatest reduction in MEF samples was in serotype 19A, with a relative reduction of 91%. However, over time the vaccine type efficacy of PCV13 against MEF-positive pneumococcal AOM has eroded. There was no clear efficacy against serotype 3, and we still observed cases of serotype 19A and 19F. PCV13 vaccine failures have been even more frequent in Europe (nearly 30% of pneumococcal AOM in Europe is caused by vaccine serotypes) than our data indicate, where about 10% of AOM is caused by PCV13 serotypes.

In our most recent publication covering 2015-2019, we described results from 589 children, aged 6-36 months, from whom we collected 2,042 nasopharyngeal samples.^2,4 During AOM, 495 MEF samples from 319 AOM-infected children were collected (during bilateral infections, tympanocentesis was performed in both ears). Whether bacteria were isolated was based per AOM case, not per tap. The average age of children with AOM was 15 months (range 6-31 months). The three most prevalent nasopharyngeal pneumococcal serotypes were 35B, 23B, and 15B/C. Serotype 35B was the most common at AOM visits in both the nasopharynx and MEF samples followed by serotype 15B/C. Nonsusceptibility among pneumococci to penicillin, azithromycin, and multiple other antibiotics was high. Increasing resistance to ceftriaxone was also observed.

Based on our results, if PCV15 (PCV13 + 22F and 33F) effectiveness is identical to PCV13 for the included serotypes and 100% efficacy for the added serotypes is presumed, PCV15 will reduce pneumococcal AOMs by 8%, pneumococcal nasopharyngeal colonization events at onset of AOM by 6%, and pneumococcal nasopharyngeal colonization events during health by 3%. As for the projected reductions brought about by PCV20 (PCV15 + 8, 10A, 11A, 12F, and 15B), presuming serotype 15B is efficacious against serotype 15C and 100% efficacy for the added serotypes, PCV20 will reduce pneumococcal AOMs by 22%, pneumococcal nasopharyngeal colonization events at onset of AOM by 20%, and pneumococcal nasopharyngeal colonization events during health by 3% (Figure).

The CDC estimated that, in 2004, pneumococcal disease in the United States caused 4 million illness episodes, 22,000 deaths, 445,000 hospitalizations, 774,000 emergency department visits, 5 million outpatient visits, and 4.1 million outpatient antibiotic prescriptions. Direct medical costs totaled $3.5 billion. Pneumonia (866,000 cases) accounted for 22% of all cases and 72% of pneumococcal costs. AOM and sinusitis (1.5 million cases each) composed 75% of cases and 16% of direct medical costs.⁵ However, if indirect costs are taken into account, such as work loss by parents of young children, the cost of pneumococcal disease caused by AOM alone may exceed $6 billion annually⁶ and become dominant in the cost-effectiveness analysis in high-income countries.

Despite widespread use of PCV13, Pneumococcus has shown its resilience under vaccine pressure such that the organism remains a very common AOM pathogen. All-cause AOM has declined modestly and pneumococcal AOM caused by the specific serotypes in PCVs has declined dramatically since the introduction of PCVs. However, the burden of pneumococcal AOM disease is still considerable.

The notion that strains expressing serotypes that were not included in PCV7 were less virulent was proven wrong within a few years after introduction of PCV7, with the emergence of strains expressing serotype 19A, and others. The same cycle occurred after introduction of PCV13. It appears to take about 4 years after introduction of a PCV before peak effectiveness is achieved – which then begins to erode with emergence of NVTs. First, the NVTs are observed to colonize the nasopharynx as commensals and then from among those strains new disease-causing strains emerge.

At the most recent meeting of the International Society of Pneumococci and Pneumococcal Diseases in Toronto in June, many presentations focused on the fact that PCVs elicit highly effective protective serotype-specific antibodies to the capsular polysaccharides of included types. However, 100 serotypes are known. The limitations of PCVs are becoming increasingly apparent. They are costly and consume a large portion of the Vaccines for Children budget. Children in the developing world remain largely unvaccinated because of the high cost. NVTs that have emerged to cause disease vary by country, vary by adult vs. pediatric populations, and are dynamically changing year to year. Forthcoming PCVs of 15 and 20 serotypes will be even more costly than PCV13, will not include many newly emerged serotypes, and will probably likewise encounter “serotype replacement” because of high immune evasion by pneumococci.

When Merck and Pfizer made their decisions on serotype composition for PCV15 and PCV20, respectively, they were based on available data at the time regarding predominant serotypes causing invasive pneumococcal disease in countries that had the best data and would be the market for their products. However, from the time of the decision to licensure of vaccine is many years, and during that time the pneumococcal serotypes have changed, more so for AOM, and I predict more change will occur in the future.

In the past 3 years, Dr. Pichichero has received honoraria from Merck to attend 1-day consulting meetings and his institution has received investigator-initiated research grants to study aspects of PCV15. In the past 3 years, he was reimbursed for expenses to attend the ISPPD meeting in Toronto to present a poster on potential efficacy of PCV20 to prevent complicated AOM.

Dr. Pichichero is a specialist in pediatric infectious diseases, Center for Infectious Diseases and Immunology, and director of the Research Institute, at Rochester (N.Y.) General Hospital.

References

1. Kaur R et al. Pediatrics. 2017;140(3).

2. Kaur R et al. Eur J Clin Microbiol Infect Dis. 2021;41:37-44..

3. Pichichero M et al. Lancet Child Adolesc Health. 2018;2(8):561-8.

4. Zhou F et al. Pediatrics. 2008;121(2):253-60.

5. Huang SS et al. Vaccine. 2011;29(18):3398-412.

6. Casey JR and Pichichero ME. Clin Pediatr (Phila). 2014;53(9):865-73. .
 

Lung cancer has been the leading cause of cancer-related mortality for decades. It is also predicted to remain as the leading cause of cancer-related mortality through 2030.¹ Platinum-based chemotherapy, including carboplatin and paclitaxel, was introduced 3 decades ago and revolutionized the management of advanced non–small cell lung cancer (NSCLC). A more recent advancement has been mutant epidermal growth factor receptor–tyrosine kinase (EGFR-TK) inhibitors.¹ EGFR is a transmembrane protein that functions by transducing essential growth factor signaling from the extracellular milieu to the cell. As 60% of the advanced NSCLC expresses this receptor, blocking the mutant EGFR receptor was a groundbreaking development in the management of advanced NSCLC.² Development of mutant EGFR-TK inhibitors has revolutionized the management of advanced NSCLC. This study was conducted to determine the safety profile of mutant EGFR-TK inhibitors in the management of advanced NSCLC.

Methods 

This meta-analysis was conducted according to Cochrane Collaboration guidelines and reported as per Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The findings are summarized in the PRISMA flow diagram (Figure 1). Two authors (MZ and MM) performed a systematic literature search using databases such as MEDLINE (via PubMed), Embase, and Cochrane Library using the medical search terms and their respective entry words with the following search strategy: safety, “mutant EGFR-TK inhibitors,” advanced, “non–small cell,” “lung cancer,” “adverse effect,” and literature. Additionally, unpublished trials were identified from clinicaltrials.gov, and references of all pertinent articles were also scrutinized to ensure the inclusion of all relevant studies. The search was completed on June 1, 2021, and we only included studies available in English. Two authors (MM and MZ) independently screened the search results in a 2-step process based on predetermined inclusion/exclusion criteria. First, 890 articles were evaluated for relevance on title and abstract level, followed by full-text screening of the final list of 140 articles. Any disagreements were resolved by discussion or third-party review, and a total of 9 articles were included in the study.

The following eligibility criteria were used: original articles reporting adverse effects (AEs) of mutant EGFR-TK inhibitors in patients with advanced NSCLC compared with control groups receiving platinum-based chemotherapy. All the patients included in the study had an EGFR mutation but randomly assigned to either treatment or control group. All articles with subjective data on mutant EGFR-TK inhibitors AEs in patients with advanced NSCLC compared with control groups receiving platinum-based chemotherapy were included in the analysis. Only 9 articles qualified the aforementioned selection criteria for eligibility. All qualifying studies were nationwide inpatient or pooled clinical trials data. The reasons for exclusion of the other 71 articles were irrelevant (n = 31), duplicate (n = 13), reviews (n = 14), and poor data reporting (n = 12). Out of the 9 included studies, 9 studies showed correlation of AEs, including rash, diarrhea, nausea, and fatigue. Seven studies showed correlation of AEs including neutropenia, anorexia, and vomiting. Six studies showed correlation of anemia, cough, and stomatitis. Five studies showed correlation of elevated aspartate aminotransferase (AST), alanine aminotransferase (ALT), and leucopenia. Four studies showed correlation of fever between mutant EGFR-TK inhibitors and platinum-based chemotherapy.

The primary endpoints were reported AEs including rash, diarrhea, elevated ALT, elevated AST, stomatitis, nausea, leucopenia, fatigue, neutropenia, anorexia, anemia, cough, vomiting, and fever, respectively. Data on baseline characteristics and clinical outcomes were then extracted, and summary tables were created. Summary estimates of the clinical endpoints were then calculated with risk ratio (RR) and 95% confidence intervals (CIs) using the random-effects model. Heterogeneity between studies was examined with the Cochran Q I² statistic which can be defined as low (25% to 50%), moderate (50% to 75%), or high (> 75%). Statistical analysis was performed using Comprehensive Meta-Analysis Software CMA Version 3.0.

Results

A total of 9 studies including 3415 patients (1775 in EGFR-TK inhibitor treatment group while 1640 patients in platinum-based chemotherapy control group) were included in the study. All 9 studies were phase III randomized control clinical trials conducted to compare the safety profile of mutant EGFR-TK inhibitors in patients with advanced NSCLC. Mean age was 61 years in both treatment and control groups. Further details on study and participant characteristics and safety profile including AEs are summarized in Tables 1 and 2. No evidence of publication bias was found.

Rash developed in 45.8% of patients in the treatment group receiving mutant EGFR-TK inhibitors vs only 5.6% of patients in the control group receiving platinum-based chemotherapy. Overall RR of 7.38 with the 95% CI noted, which was statistically significant, confirming higher rash event rates in patients receiving EGFR-TK inhibitors for their advanced NSCLC (Figure 2).

Diarrhea occurred in 33.6% of patients in the mutant EGFR-TK inhibitors treatment group vs 13.5% of patients in the control group receiving platinum-based chemotherapy. Overall RR of 2.63 and 95% CI was noted, which was statistically significant, confirming higher diarrheal rates in patients receiving EGFR-TK inhibitors for their advanced NSCLC (Figure 3).

Discussion

Despite the advancement in the treatment of metastatic NSCLC, lung cancer stays as most common cause of cancer-related death in North America and European countries, as patients usually have an advanced disease at the time of diagnosis.³ In the past, platinum-based chemotherapy remained the standard of care for most of the patients affected with advanced NSCLC, but the higher recurrence rate and increase in frequency and intensity of AEs with platinum-based chemotherapy led to the development of targeted therapy for NSCLC, one of which includes mutant EGFR-TK inhibitors, including erlotinib, gefitinib, dacomitinib, lapatinib, and osimertinib.⁴

Smoking is the most common reversible risk factor associated with lung cancer. The EURTAC trial was the first perspective study in this regard, which compared safety and efficacy of mutant EGFR-TK inhibitors with platinum-based chemotherapy. Results analyzed in this study were in favor of mutant EGFR-TK inhibitors except in the group of former smokers.⁵ On the contrary, the OPTIMAL trial showed results in favor of mutant EGFR-TK inhibitors both in active and former smokers; this trial also confirmed the efficacy of mutant EGFR-TK inhibitors in European and Asian populations, confirming the rationale for routine testing of EGFR mutation in all the patients being diagnosed with advanced NSCLC.⁶ Similarly, osimertinib is one of the most recent mutant EGFR-TK inhibitors developed for the treatment of advanced NSCLC in patients with EGFR-positive receptors.

According to the FLAURA trial, patients receiving osimertinib showed significantly longer progression-free survival compared with platinum-based chemotherapy and early mutant EGFR-TK inhibitors. Median progression-free survival was noted to be 18.9 months, which showed 54% lower risk of disease progression in the treatment group receiving osimertinib.⁷ The ARCHER study emphasized a significant improvement in overall survival as well as progression-free survival among a patient population receiving dacomitinib compared with platinum-based chemotherapy.^8,9

Being a potent targeted therapy, mutant EGFR-TK inhibitors do come with some AEs including diarrhea, which was seen in 33.6% of the patients receiving mutant EGFR-TK inhibitors in our study vs 53% in the chemotherapy group, as was observed in the study conducted by Pless and colleagues.¹⁰ Similarly, only 16.5% of patients receiving mutant EGFR-TK inhibitors developed nausea compared with 66% being observed in patients receiving chemotherapy. Correspondingly, only a small fraction of patients (9.7%) receiving mutant EGFR-TK inhibitors developed leucopenia, which was 10 times less reported in mutant EGFR-TK inhibitors compared with patients receiving chemotherapy having a percentage of 100%. A similar trend was reported for neutropenia and anemia in mutant EGFR-TK inhibitors with an incidence of 6.1% and 8.7%, compared with the platinum-based chemotherapy group in which the incidence was found to be 80% and 100%, respectively. It was concluded that platinum-based chemotherapy had played a vital role in the treatment of advanced NSCLC but at an expense of serious and severe AEs which led to discontinuation or withdrawal of treatment, leading to relapse and recurrence of lung cancer.^10,11

Zhong and colleagues conducted a phase 2 randomized clinical trial comparing mutant EGFR-TK inhibitors with platinum-based chemotherapy. They concluded that in patients receiving platinum-based chemotherapy, incidence of rash, vomiting, anorexia, neutropenia, and nausea were 29.4%, 47%, 41.2%, 55.8%, and 32.4% compared with 45.8%, 11%, 21.3%, 6.1%, and 16.5%, respectively, reported in patients receiving mutant EGFR-TK inhibitors for their advanced NSCLC.¹²

Another study was conducted in 2019 by Noronha and colleagues to determine the impact of platinum-based chemotherapy combined with gefitinib on patients with advanced NSCLC.¹³ They concluded that 70% of the patients receiving combination treatment developed rash, which was significantly higher compared with 45.8% patients receiving the mutant EGFR-TK inhibitors alone in our study. Also, 56% of patients receiving combination therapy developed diarrhea vs 33.6% of patients receiving mutant EGFR-TK inhibitors only. Similarly, 96% of patients in the combination therapy group developed some degree of anemia compared with only 8.7% patients in the mutant EGFR-TK inhibitors group included in our study. In the same way, neutropenia was observed in 55% of patients receiving combination therapy vs 6.1% in patients receiving mutant EGFR-TK inhibitors solely. They concluded that mutant EGFR-TK inhibitors when combined with platinum-based chemotherapy increase the incidence of AEs of chemotherapy by many folds.^13,14

Kato and colleagues conducted a study to determine the impact on AEs when erlotinib was combined with anti–vascular endothelial growth factor (VEGF) inhibitors like bevacizumab, they stated that 98.7% of patient in combination therapy developed rash, the incidence of which was only 45.8% in patients receiving mutant EGFR-TK inhibitors as was observed in our study. Similar trends were noticed with other AEs, including diarrhea, fatigue, nausea, and elevated liver enzymes.¹⁵

Conclusions

Our study focused on the safety profile of mutant EGFR-TK inhibitors vs platinum-based chemotherapy in the treatment of advanced NSCLC. Mutant EGFR-TK inhibitors are safer than platinum-based chemotherapy when compared for nausea, leucopenia, fatigue, neutropenia, anorexia, anemia, cough, vomiting, and fever. On the other end, mutant EGFR-TK inhibitors cause slightly higher AEs, including rash, diarrhea, elevated AST and ALT levels, and stomatitis. However, considering that the development of mutant EGFR-TK inhibitors laid a foundation of targeted therapy, we recommend continuing using mutant EGFR-TK inhibitors in patients with advanced NSCLC especially in patients having mutant EGFR receptors. AEs caused by mutant EGFR-TK inhibitors are significant but are usually tolerable and can be avoided by reducing the dosage of it with each cycle or by skipping or delaying the dose until the patient is symptomatic.

Lung cancer has been the leading cause of cancer-related mortality for decades. It is also predicted to remain as the leading cause of cancer-related mortality through 2030.¹ Platinum-based chemotherapy, including carboplatin and paclitaxel, was introduced 3 decades ago and revolutionized the management of advanced non–small cell lung cancer (NSCLC). A more recent advancement has been mutant epidermal growth factor receptor–tyrosine kinase (EGFR-TK) inhibitors.¹ EGFR is a transmembrane protein that functions by transducing essential growth factor signaling from the extracellular milieu to the cell. As 60% of the advanced NSCLC expresses this receptor, blocking the mutant EGFR receptor was a groundbreaking development in the management of advanced NSCLC.² Development of mutant EGFR-TK inhibitors has revolutionized the management of advanced NSCLC. This study was conducted to determine the safety profile of mutant EGFR-TK inhibitors in the management of advanced NSCLC.

Methods 

This meta-analysis was conducted according to Cochrane Collaboration guidelines and reported as per Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The findings are summarized in the PRISMA flow diagram (Figure 1). Two authors (MZ and MM) performed a systematic literature search using databases such as MEDLINE (via PubMed), Embase, and Cochrane Library using the medical search terms and their respective entry words with the following search strategy: safety, “mutant EGFR-TK inhibitors,” advanced, “non–small cell,” “lung cancer,” “adverse effect,” and literature. Additionally, unpublished trials were identified from clinicaltrials.gov, and references of all pertinent articles were also scrutinized to ensure the inclusion of all relevant studies. The search was completed on June 1, 2021, and we only included studies available in English. Two authors (MM and MZ) independently screened the search results in a 2-step process based on predetermined inclusion/exclusion criteria. First, 890 articles were evaluated for relevance on title and abstract level, followed by full-text screening of the final list of 140 articles. Any disagreements were resolved by discussion or third-party review, and a total of 9 articles were included in the study.

The following eligibility criteria were used: original articles reporting adverse effects (AEs) of mutant EGFR-TK inhibitors in patients with advanced NSCLC compared with control groups receiving platinum-based chemotherapy. All the patients included in the study had an EGFR mutation but randomly assigned to either treatment or control group. All articles with subjective data on mutant EGFR-TK inhibitors AEs in patients with advanced NSCLC compared with control groups receiving platinum-based chemotherapy were included in the analysis. Only 9 articles qualified the aforementioned selection criteria for eligibility. All qualifying studies were nationwide inpatient or pooled clinical trials data. The reasons for exclusion of the other 71 articles were irrelevant (n = 31), duplicate (n = 13), reviews (n = 14), and poor data reporting (n = 12). Out of the 9 included studies, 9 studies showed correlation of AEs, including rash, diarrhea, nausea, and fatigue. Seven studies showed correlation of AEs including neutropenia, anorexia, and vomiting. Six studies showed correlation of anemia, cough, and stomatitis. Five studies showed correlation of elevated aspartate aminotransferase (AST), alanine aminotransferase (ALT), and leucopenia. Four studies showed correlation of fever between mutant EGFR-TK inhibitors and platinum-based chemotherapy.

The primary endpoints were reported AEs including rash, diarrhea, elevated ALT, elevated AST, stomatitis, nausea, leucopenia, fatigue, neutropenia, anorexia, anemia, cough, vomiting, and fever, respectively. Data on baseline characteristics and clinical outcomes were then extracted, and summary tables were created. Summary estimates of the clinical endpoints were then calculated with risk ratio (RR) and 95% confidence intervals (CIs) using the random-effects model. Heterogeneity between studies was examined with the Cochran Q I² statistic which can be defined as low (25% to 50%), moderate (50% to 75%), or high (> 75%). Statistical analysis was performed using Comprehensive Meta-Analysis Software CMA Version 3.0.

Results

A total of 9 studies including 3415 patients (1775 in EGFR-TK inhibitor treatment group while 1640 patients in platinum-based chemotherapy control group) were included in the study. All 9 studies were phase III randomized control clinical trials conducted to compare the safety profile of mutant EGFR-TK inhibitors in patients with advanced NSCLC. Mean age was 61 years in both treatment and control groups. Further details on study and participant characteristics and safety profile including AEs are summarized in Tables 1 and 2. No evidence of publication bias was found.

Rash developed in 45.8% of patients in the treatment group receiving mutant EGFR-TK inhibitors vs only 5.6% of patients in the control group receiving platinum-based chemotherapy. Overall RR of 7.38 with the 95% CI noted, which was statistically significant, confirming higher rash event rates in patients receiving EGFR-TK inhibitors for their advanced NSCLC (Figure 2).

Diarrhea occurred in 33.6% of patients in the mutant EGFR-TK inhibitors treatment group vs 13.5% of patients in the control group receiving platinum-based chemotherapy. Overall RR of 2.63 and 95% CI was noted, which was statistically significant, confirming higher diarrheal rates in patients receiving EGFR-TK inhibitors for their advanced NSCLC (Figure 3).

Discussion

Despite the advancement in the treatment of metastatic NSCLC, lung cancer stays as most common cause of cancer-related death in North America and European countries, as patients usually have an advanced disease at the time of diagnosis.³ In the past, platinum-based chemotherapy remained the standard of care for most of the patients affected with advanced NSCLC, but the higher recurrence rate and increase in frequency and intensity of AEs with platinum-based chemotherapy led to the development of targeted therapy for NSCLC, one of which includes mutant EGFR-TK inhibitors, including erlotinib, gefitinib, dacomitinib, lapatinib, and osimertinib.⁴

Smoking is the most common reversible risk factor associated with lung cancer. The EURTAC trial was the first perspective study in this regard, which compared safety and efficacy of mutant EGFR-TK inhibitors with platinum-based chemotherapy. Results analyzed in this study were in favor of mutant EGFR-TK inhibitors except in the group of former smokers.⁵ On the contrary, the OPTIMAL trial showed results in favor of mutant EGFR-TK inhibitors both in active and former smokers; this trial also confirmed the efficacy of mutant EGFR-TK inhibitors in European and Asian populations, confirming the rationale for routine testing of EGFR mutation in all the patients being diagnosed with advanced NSCLC.⁶ Similarly, osimertinib is one of the most recent mutant EGFR-TK inhibitors developed for the treatment of advanced NSCLC in patients with EGFR-positive receptors.

According to the FLAURA trial, patients receiving osimertinib showed significantly longer progression-free survival compared with platinum-based chemotherapy and early mutant EGFR-TK inhibitors. Median progression-free survival was noted to be 18.9 months, which showed 54% lower risk of disease progression in the treatment group receiving osimertinib.⁷ The ARCHER study emphasized a significant improvement in overall survival as well as progression-free survival among a patient population receiving dacomitinib compared with platinum-based chemotherapy.^8,9

Being a potent targeted therapy, mutant EGFR-TK inhibitors do come with some AEs including diarrhea, which was seen in 33.6% of the patients receiving mutant EGFR-TK inhibitors in our study vs 53% in the chemotherapy group, as was observed in the study conducted by Pless and colleagues.¹⁰ Similarly, only 16.5% of patients receiving mutant EGFR-TK inhibitors developed nausea compared with 66% being observed in patients receiving chemotherapy. Correspondingly, only a small fraction of patients (9.7%) receiving mutant EGFR-TK inhibitors developed leucopenia, which was 10 times less reported in mutant EGFR-TK inhibitors compared with patients receiving chemotherapy having a percentage of 100%. A similar trend was reported for neutropenia and anemia in mutant EGFR-TK inhibitors with an incidence of 6.1% and 8.7%, compared with the platinum-based chemotherapy group in which the incidence was found to be 80% and 100%, respectively. It was concluded that platinum-based chemotherapy had played a vital role in the treatment of advanced NSCLC but at an expense of serious and severe AEs which led to discontinuation or withdrawal of treatment, leading to relapse and recurrence of lung cancer.^10,11

Zhong and colleagues conducted a phase 2 randomized clinical trial comparing mutant EGFR-TK inhibitors with platinum-based chemotherapy. They concluded that in patients receiving platinum-based chemotherapy, incidence of rash, vomiting, anorexia, neutropenia, and nausea were 29.4%, 47%, 41.2%, 55.8%, and 32.4% compared with 45.8%, 11%, 21.3%, 6.1%, and 16.5%, respectively, reported in patients receiving mutant EGFR-TK inhibitors for their advanced NSCLC.¹²

Another study was conducted in 2019 by Noronha and colleagues to determine the impact of platinum-based chemotherapy combined with gefitinib on patients with advanced NSCLC.¹³ They concluded that 70% of the patients receiving combination treatment developed rash, which was significantly higher compared with 45.8% patients receiving the mutant EGFR-TK inhibitors alone in our study. Also, 56% of patients receiving combination therapy developed diarrhea vs 33.6% of patients receiving mutant EGFR-TK inhibitors only. Similarly, 96% of patients in the combination therapy group developed some degree of anemia compared with only 8.7% patients in the mutant EGFR-TK inhibitors group included in our study. In the same way, neutropenia was observed in 55% of patients receiving combination therapy vs 6.1% in patients receiving mutant EGFR-TK inhibitors solely. They concluded that mutant EGFR-TK inhibitors when combined with platinum-based chemotherapy increase the incidence of AEs of chemotherapy by many folds.^13,14

Kato and colleagues conducted a study to determine the impact on AEs when erlotinib was combined with anti–vascular endothelial growth factor (VEGF) inhibitors like bevacizumab, they stated that 98.7% of patient in combination therapy developed rash, the incidence of which was only 45.8% in patients receiving mutant EGFR-TK inhibitors as was observed in our study. Similar trends were noticed with other AEs, including diarrhea, fatigue, nausea, and elevated liver enzymes.¹⁵

Conclusions

Our study focused on the safety profile of mutant EGFR-TK inhibitors vs platinum-based chemotherapy in the treatment of advanced NSCLC. Mutant EGFR-TK inhibitors are safer than platinum-based chemotherapy when compared for nausea, leucopenia, fatigue, neutropenia, anorexia, anemia, cough, vomiting, and fever. On the other end, mutant EGFR-TK inhibitors cause slightly higher AEs, including rash, diarrhea, elevated AST and ALT levels, and stomatitis. However, considering that the development of mutant EGFR-TK inhibitors laid a foundation of targeted therapy, we recommend continuing using mutant EGFR-TK inhibitors in patients with advanced NSCLC especially in patients having mutant EGFR receptors. AEs caused by mutant EGFR-TK inhibitors are significant but are usually tolerable and can be avoided by reducing the dosage of it with each cycle or by skipping or delaying the dose until the patient is symptomatic.

Lung cancer has been the leading cause of cancer-related mortality for decades. It is also predicted to remain as the leading cause of cancer-related mortality through 2030.¹ Platinum-based chemotherapy, including carboplatin and paclitaxel, was introduced 3 decades ago and revolutionized the management of advanced non–small cell lung cancer (NSCLC). A more recent advancement has been mutant epidermal growth factor receptor–tyrosine kinase (EGFR-TK) inhibitors.¹ EGFR is a transmembrane protein that functions by transducing essential growth factor signaling from the extracellular milieu to the cell. As 60% of the advanced NSCLC expresses this receptor, blocking the mutant EGFR receptor was a groundbreaking development in the management of advanced NSCLC.² Development of mutant EGFR-TK inhibitors has revolutionized the management of advanced NSCLC. This study was conducted to determine the safety profile of mutant EGFR-TK inhibitors in the management of advanced NSCLC.

Methods 

This meta-analysis was conducted according to Cochrane Collaboration guidelines and reported as per Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The findings are summarized in the PRISMA flow diagram (Figure 1). Two authors (MZ and MM) performed a systematic literature search using databases such as MEDLINE (via PubMed), Embase, and Cochrane Library using the medical search terms and their respective entry words with the following search strategy: safety, “mutant EGFR-TK inhibitors,” advanced, “non–small cell,” “lung cancer,” “adverse effect,” and literature. Additionally, unpublished trials were identified from clinicaltrials.gov, and references of all pertinent articles were also scrutinized to ensure the inclusion of all relevant studies. The search was completed on June 1, 2021, and we only included studies available in English. Two authors (MM and MZ) independently screened the search results in a 2-step process based on predetermined inclusion/exclusion criteria. First, 890 articles were evaluated for relevance on title and abstract level, followed by full-text screening of the final list of 140 articles. Any disagreements were resolved by discussion or third-party review, and a total of 9 articles were included in the study.

The following eligibility criteria were used: original articles reporting adverse effects (AEs) of mutant EGFR-TK inhibitors in patients with advanced NSCLC compared with control groups receiving platinum-based chemotherapy. All the patients included in the study had an EGFR mutation but randomly assigned to either treatment or control group. All articles with subjective data on mutant EGFR-TK inhibitors AEs in patients with advanced NSCLC compared with control groups receiving platinum-based chemotherapy were included in the analysis. Only 9 articles qualified the aforementioned selection criteria for eligibility. All qualifying studies were nationwide inpatient or pooled clinical trials data. The reasons for exclusion of the other 71 articles were irrelevant (n = 31), duplicate (n = 13), reviews (n = 14), and poor data reporting (n = 12). Out of the 9 included studies, 9 studies showed correlation of AEs, including rash, diarrhea, nausea, and fatigue. Seven studies showed correlation of AEs including neutropenia, anorexia, and vomiting. Six studies showed correlation of anemia, cough, and stomatitis. Five studies showed correlation of elevated aspartate aminotransferase (AST), alanine aminotransferase (ALT), and leucopenia. Four studies showed correlation of fever between mutant EGFR-TK inhibitors and platinum-based chemotherapy.

The primary endpoints were reported AEs including rash, diarrhea, elevated ALT, elevated AST, stomatitis, nausea, leucopenia, fatigue, neutropenia, anorexia, anemia, cough, vomiting, and fever, respectively. Data on baseline characteristics and clinical outcomes were then extracted, and summary tables were created. Summary estimates of the clinical endpoints were then calculated with risk ratio (RR) and 95% confidence intervals (CIs) using the random-effects model. Heterogeneity between studies was examined with the Cochran Q I² statistic which can be defined as low (25% to 50%), moderate (50% to 75%), or high (> 75%). Statistical analysis was performed using Comprehensive Meta-Analysis Software CMA Version 3.0.

Results

A total of 9 studies including 3415 patients (1775 in EGFR-TK inhibitor treatment group while 1640 patients in platinum-based chemotherapy control group) were included in the study. All 9 studies were phase III randomized control clinical trials conducted to compare the safety profile of mutant EGFR-TK inhibitors in patients with advanced NSCLC. Mean age was 61 years in both treatment and control groups. Further details on study and participant characteristics and safety profile including AEs are summarized in Tables 1 and 2. No evidence of publication bias was found.

Rash developed in 45.8% of patients in the treatment group receiving mutant EGFR-TK inhibitors vs only 5.6% of patients in the control group receiving platinum-based chemotherapy. Overall RR of 7.38 with the 95% CI noted, which was statistically significant, confirming higher rash event rates in patients receiving EGFR-TK inhibitors for their advanced NSCLC (Figure 2).

Diarrhea occurred in 33.6% of patients in the mutant EGFR-TK inhibitors treatment group vs 13.5% of patients in the control group receiving platinum-based chemotherapy. Overall RR of 2.63 and 95% CI was noted, which was statistically significant, confirming higher diarrheal rates in patients receiving EGFR-TK inhibitors for their advanced NSCLC (Figure 3).

Discussion

Despite the advancement in the treatment of metastatic NSCLC, lung cancer stays as most common cause of cancer-related death in North America and European countries, as patients usually have an advanced disease at the time of diagnosis.³ In the past, platinum-based chemotherapy remained the standard of care for most of the patients affected with advanced NSCLC, but the higher recurrence rate and increase in frequency and intensity of AEs with platinum-based chemotherapy led to the development of targeted therapy for NSCLC, one of which includes mutant EGFR-TK inhibitors, including erlotinib, gefitinib, dacomitinib, lapatinib, and osimertinib.⁴

Smoking is the most common reversible risk factor associated with lung cancer. The EURTAC trial was the first perspective study in this regard, which compared safety and efficacy of mutant EGFR-TK inhibitors with platinum-based chemotherapy. Results analyzed in this study were in favor of mutant EGFR-TK inhibitors except in the group of former smokers.⁵ On the contrary, the OPTIMAL trial showed results in favor of mutant EGFR-TK inhibitors both in active and former smokers; this trial also confirmed the efficacy of mutant EGFR-TK inhibitors in European and Asian populations, confirming the rationale for routine testing of EGFR mutation in all the patients being diagnosed with advanced NSCLC.⁶ Similarly, osimertinib is one of the most recent mutant EGFR-TK inhibitors developed for the treatment of advanced NSCLC in patients with EGFR-positive receptors.

According to the FLAURA trial, patients receiving osimertinib showed significantly longer progression-free survival compared with platinum-based chemotherapy and early mutant EGFR-TK inhibitors. Median progression-free survival was noted to be 18.9 months, which showed 54% lower risk of disease progression in the treatment group receiving osimertinib.⁷ The ARCHER study emphasized a significant improvement in overall survival as well as progression-free survival among a patient population receiving dacomitinib compared with platinum-based chemotherapy.^8,9

Being a potent targeted therapy, mutant EGFR-TK inhibitors do come with some AEs including diarrhea, which was seen in 33.6% of the patients receiving mutant EGFR-TK inhibitors in our study vs 53% in the chemotherapy group, as was observed in the study conducted by Pless and colleagues.¹⁰ Similarly, only 16.5% of patients receiving mutant EGFR-TK inhibitors developed nausea compared with 66% being observed in patients receiving chemotherapy. Correspondingly, only a small fraction of patients (9.7%) receiving mutant EGFR-TK inhibitors developed leucopenia, which was 10 times less reported in mutant EGFR-TK inhibitors compared with patients receiving chemotherapy having a percentage of 100%. A similar trend was reported for neutropenia and anemia in mutant EGFR-TK inhibitors with an incidence of 6.1% and 8.7%, compared with the platinum-based chemotherapy group in which the incidence was found to be 80% and 100%, respectively. It was concluded that platinum-based chemotherapy had played a vital role in the treatment of advanced NSCLC but at an expense of serious and severe AEs which led to discontinuation or withdrawal of treatment, leading to relapse and recurrence of lung cancer.^10,11

Zhong and colleagues conducted a phase 2 randomized clinical trial comparing mutant EGFR-TK inhibitors with platinum-based chemotherapy. They concluded that in patients receiving platinum-based chemotherapy, incidence of rash, vomiting, anorexia, neutropenia, and nausea were 29.4%, 47%, 41.2%, 55.8%, and 32.4% compared with 45.8%, 11%, 21.3%, 6.1%, and 16.5%, respectively, reported in patients receiving mutant EGFR-TK inhibitors for their advanced NSCLC.¹²

Another study was conducted in 2019 by Noronha and colleagues to determine the impact of platinum-based chemotherapy combined with gefitinib on patients with advanced NSCLC.¹³ They concluded that 70% of the patients receiving combination treatment developed rash, which was significantly higher compared with 45.8% patients receiving the mutant EGFR-TK inhibitors alone in our study. Also, 56% of patients receiving combination therapy developed diarrhea vs 33.6% of patients receiving mutant EGFR-TK inhibitors only. Similarly, 96% of patients in the combination therapy group developed some degree of anemia compared with only 8.7% patients in the mutant EGFR-TK inhibitors group included in our study. In the same way, neutropenia was observed in 55% of patients receiving combination therapy vs 6.1% in patients receiving mutant EGFR-TK inhibitors solely. They concluded that mutant EGFR-TK inhibitors when combined with platinum-based chemotherapy increase the incidence of AEs of chemotherapy by many folds.^13,14

Kato and colleagues conducted a study to determine the impact on AEs when erlotinib was combined with anti–vascular endothelial growth factor (VEGF) inhibitors like bevacizumab, they stated that 98.7% of patient in combination therapy developed rash, the incidence of which was only 45.8% in patients receiving mutant EGFR-TK inhibitors as was observed in our study. Similar trends were noticed with other AEs, including diarrhea, fatigue, nausea, and elevated liver enzymes.¹⁵

Conclusions

Our study focused on the safety profile of mutant EGFR-TK inhibitors vs platinum-based chemotherapy in the treatment of advanced NSCLC. Mutant EGFR-TK inhibitors are safer than platinum-based chemotherapy when compared for nausea, leucopenia, fatigue, neutropenia, anorexia, anemia, cough, vomiting, and fever. On the other end, mutant EGFR-TK inhibitors cause slightly higher AEs, including rash, diarrhea, elevated AST and ALT levels, and stomatitis. However, considering that the development of mutant EGFR-TK inhibitors laid a foundation of targeted therapy, we recommend continuing using mutant EGFR-TK inhibitors in patients with advanced NSCLC especially in patients having mutant EGFR receptors. AEs caused by mutant EGFR-TK inhibitors are significant but are usually tolerable and can be avoided by reducing the dosage of it with each cycle or by skipping or delaying the dose until the patient is symptomatic.

Gun attacks in classrooms across the nation have led principals and other school leaders to implement “active shooter” drills to try to increase the safety of their students and faculty.

The drills can range from staging lockdowns and sheltering in place to quasi dramas with mock shooters roaming the halls. Although the goals of these training exercises are important, equally important are the potential negative effects of drills on students’ mental health, according to doctors with expertise in pediatrics and mental health.

“Dramatic simulation of an active shooter event at school would be expected to provoke the same stress response as the real thing,” said Peter L. Loper Jr., MD, a pediatrician and psychiatrist, in an interview. “While ensuring their physical safety is very important, we must be intentional about making sure that we are not doing so at the expense of their psychosocial or emotional safety.”

“Children may not be able to differentiate a dramatic drill from a real event,” emphasized Dr. Loper, of the neuropsychiatry and behavioral science departments at the University of South Carolina, Columbia. “The parts of the brain responsible for our flight-fight-or-freeze response would interpret both simulated and real events identically and produce the same neurohormonal stress-response.”

Indeed, a study published in the journal Humanities & Social Sciences Communications suggested children experienced mental health problems related to participating in active shooter drills. In the large study, a team of statisticians from the Georgia Institute of Technology found that students reported a 42% increase in stress and anxiety and a 38.7% increase in depression during the 90 days following active shooter drills, compared with the 90 days before the drills.

The authors of this study, including Mai ElSherief, PhD, drew these conclusions after analyzing 54 million social media posts before and after drills in 114 schools across 33 states. The researchers analyzed the language of the social media posts by teachers, parents, and students and found increased use of the words hope, love, home, school, kids, community, support, and help after the drills. The researchers considered posting with these terms in the aftermath of the drills to be indicative of having high anxiety.

They included examples of how high stress, anxiety, and depression manifested in specific posts from parents in their report. The following is an example of a poster expressing high anxiety and stress: “are we really gonna normalize school shooter drills?! holy sh* there has to be a real way to avoid these tragedies. sh*t like this cannot be normalized. teachers injured after being shot with plastic pellets ‘execution style’ in active shooter drill.”

The authors also shared this post to serve as an example of a person who seems depressed: “and now we are revisiting the trauma on our kids, forcing them to act out school drills monthly. i don’t get why gen x parents buy into this concept wholeheartedly. things need to change.”

The published material did not include posts from students, but the researchers’ analysis of the content of posts overall showed increased concerns for health and increased concerns about death during the period after drills, compared with before drills.

The authors also conducted focus groups in communities in which drills occurred, and many teachers and parents reported anecdotal evidence of children who were nervous long after the drills were over, with some showing extreme reactions such as panic over a standard fire alarm at school. Overall, the results show that school shooter drills can negatively affect school communities over prolonged periods of time, they concluded.

According to a statement from the American Academy of Pediatrics, “there is a need to be cautious about the potential psychological risks and other unintended consequences of directly involving children in live exercises and drills.”

“These risks and consequences are especially a concern when children are deceived and led to believe there is an actual attack and not a drill,” wrote David Schonfeld, MD, the lead author of the statement on Participation of Children and Adolescents in Live Crisis Drills and Exercises, and colleagues.
 

Managing the fallout

Physicians can help students experiencing mental health problems from these drills, according to doctors interviewed for this piece.

It’s important for providers to know that stress will show up differently in children than in adults, said Chelsea Younghans, MD, a psychiatrist and military officer in Bethesda, Md., in an interview.

“They may see children with headaches, stomach aches, or nonspecific complaints. They may also see children who have not had difficulty with sleep present with nightmares or bed wetting,” she added.

For teens and preteens, validated tools such as the Child PTSD Symptom Scale (CPSS-5) and Child and Adolescent Trauma Screen (CATS) to assess PTSD in youth, may help serve as a starting point for a conversation between providers and their older child population, she noted.

Children who exhibit avoidance or withdrawal behaviors including consistent school refusal, an increase in reassurance-seeking behaviors, or somatic symptoms like vague abdominal pain or headaches that prevent school attendance after participating in a drill, may need more robust mental health services, Dr. Loper noted.

Dr. Schonfeld, who is also director of the National Center for School Crisis and Bereavement at Children’s Hospital Los Angeles, called for health care providers to be available to help children process traumatic reactions to these exercises.

Agreeing with Dr. Schonfeld, Dr. Younghans said: “It is vital to debrief with students and staff after drills, making sure that students have a safe space and ample time to speak with trusted staff. As children will undoubtedly have questions and concerns, creating open lines of communication will help alleviate any traumatic effect these drills may have.”
 

Communicating with various stakeholders

Experts also gave recommendations for how clinicians communicate with leaders in their area’s school districts and other members of their communities about these training exercises.

“For primary care providers, it is important to establish meaningful relationships within your community and patient population as much as possible,” Dr. Younghans said. “Having a good relationship with the local schools and being part of the conversation can help increase school and community awareness on the impact these drills can have on students and staff,” she added.

For those pediatricians or other health care providers who serve as consultants to schools, Dr. Schonfeld advised they ask about policies related to exercises and drills, such as what are the limits to what children might be exposed to in a drill, and what requirements there might be at the local and state level in terms of frequency and what the drills will and will not involve.

He also noted that clinicians should encourage school leaders to consider the fact that kids may have personal histories of trauma that are completely unknown to the school when they design these exercises.

School staff and health care providers should explain the nature and reasons for drills, invite family members to express concerns, and make accommodations if necessary for some children to participate in drills in a more limited way, noted Dr. Schonfeld, who is also clinical professor of pediatrics at the University of Southern California, Los Angeles.

“I think health care providers should work with legislators, so that if they require a drill, it must be done in a way that is physically and emotionally safe,” he added.
 

Executing better drills for students’ mental health

Experts also advised on ways to execute these drills that will be least damaging to students.

The AAP statement on Participation of Children and Adolescents in Live Crisis Drills and Exercises, for example, advocates eliminating high-intensity drills, prohibiting deception in drills, and providing accommodations based on children’s vulnerabilities.

Dr. Schonfeld also emphasized, in an interview, that training for an attack need not be extremely realistic to be effective.

“When you are preparing for a crisis, the drills and exercises are for children to practice and develop mastery over something they don’t know how to do fully yet,” said Dr. Schonfeld.

Citing a suggestion from a 2020 report conducted by Everytown for Gun Safety on keeping schools safe from gun violence, Dr. Younghans said, “Schools should be in clear communication with communities and families regarding when drills will be happening,” and advised ensuring that the explanation of drills is developmentally appropriate to the age of the children participating.

The report also recommends conducting drills that do not simulate an actual incident, combining drills with trauma-informed approaches to address students’ well-being during and for a sustained period after the drills, and tracking data on the efficacy and effects of drills.

Dr. Loper suggested ways that clinicians and parents can help navigate the tricky territory of school safety drills.

In his view, they should not be random or unexpected, and anticipatory guidance should be given regarding any visual or auditory stimuli, such as flashing lights or sirens, alarms, or announcements.

“A preventive approach should be utilized to ensure that any child who is experiencing extreme drill-distress be excused from any future disaster drills to prevent retraumatization,” Dr. Loper said.

Physicians interviewed for this piece also provided tips on how to talk about these events with children in a way that is beneficial to their mental health.

“What we want to do is [have a] calm discussion [with kids] about what we are doing and why we are doing it” and guide them through the movements, Dr. Schonfeld said.

When teaching children how to respond to an emergency, some elements of uncertainty need to be discussed. Children need to anticipate “what you might do if you are not in the classroom if something occurs, such as being in the bathroom, or out at recess,” he continued.

Dr. Younghans recommended that parents and staff schedule time to prepare children for the drill and practice in advance, and that behavioral health providers, counselors, and/or primary care providers should be involved in the planning and execution of the drill.

The Georgia Tech study was supported through a grant from Everytown for Gun Safety.

The study authors and experts interviewed for this piece had no financial conflicts to disclose.

Gun attacks in classrooms across the nation have led principals and other school leaders to implement “active shooter” drills to try to increase the safety of their students and faculty.

The drills can range from staging lockdowns and sheltering in place to quasi dramas with mock shooters roaming the halls. Although the goals of these training exercises are important, equally important are the potential negative effects of drills on students’ mental health, according to doctors with expertise in pediatrics and mental health.

“Dramatic simulation of an active shooter event at school would be expected to provoke the same stress response as the real thing,” said Peter L. Loper Jr., MD, a pediatrician and psychiatrist, in an interview. “While ensuring their physical safety is very important, we must be intentional about making sure that we are not doing so at the expense of their psychosocial or emotional safety.”

“Children may not be able to differentiate a dramatic drill from a real event,” emphasized Dr. Loper, of the neuropsychiatry and behavioral science departments at the University of South Carolina, Columbia. “The parts of the brain responsible for our flight-fight-or-freeze response would interpret both simulated and real events identically and produce the same neurohormonal stress-response.”

Indeed, a study published in the journal Humanities & Social Sciences Communications suggested children experienced mental health problems related to participating in active shooter drills. In the large study, a team of statisticians from the Georgia Institute of Technology found that students reported a 42% increase in stress and anxiety and a 38.7% increase in depression during the 90 days following active shooter drills, compared with the 90 days before the drills.

The authors of this study, including Mai ElSherief, PhD, drew these conclusions after analyzing 54 million social media posts before and after drills in 114 schools across 33 states. The researchers analyzed the language of the social media posts by teachers, parents, and students and found increased use of the words hope, love, home, school, kids, community, support, and help after the drills. The researchers considered posting with these terms in the aftermath of the drills to be indicative of having high anxiety.

They included examples of how high stress, anxiety, and depression manifested in specific posts from parents in their report. The following is an example of a poster expressing high anxiety and stress: “are we really gonna normalize school shooter drills?! holy sh* there has to be a real way to avoid these tragedies. sh*t like this cannot be normalized. teachers injured after being shot with plastic pellets ‘execution style’ in active shooter drill.”

The authors also shared this post to serve as an example of a person who seems depressed: “and now we are revisiting the trauma on our kids, forcing them to act out school drills monthly. i don’t get why gen x parents buy into this concept wholeheartedly. things need to change.”

The published material did not include posts from students, but the researchers’ analysis of the content of posts overall showed increased concerns for health and increased concerns about death during the period after drills, compared with before drills.

The authors also conducted focus groups in communities in which drills occurred, and many teachers and parents reported anecdotal evidence of children who were nervous long after the drills were over, with some showing extreme reactions such as panic over a standard fire alarm at school. Overall, the results show that school shooter drills can negatively affect school communities over prolonged periods of time, they concluded.

According to a statement from the American Academy of Pediatrics, “there is a need to be cautious about the potential psychological risks and other unintended consequences of directly involving children in live exercises and drills.”

“These risks and consequences are especially a concern when children are deceived and led to believe there is an actual attack and not a drill,” wrote David Schonfeld, MD, the lead author of the statement on Participation of Children and Adolescents in Live Crisis Drills and Exercises, and colleagues.
 

Managing the fallout

Physicians can help students experiencing mental health problems from these drills, according to doctors interviewed for this piece.

It’s important for providers to know that stress will show up differently in children than in adults, said Chelsea Younghans, MD, a psychiatrist and military officer in Bethesda, Md., in an interview.

“They may see children with headaches, stomach aches, or nonspecific complaints. They may also see children who have not had difficulty with sleep present with nightmares or bed wetting,” she added.

For teens and preteens, validated tools such as the Child PTSD Symptom Scale (CPSS-5) and Child and Adolescent Trauma Screen (CATS) to assess PTSD in youth, may help serve as a starting point for a conversation between providers and their older child population, she noted.

Children who exhibit avoidance or withdrawal behaviors including consistent school refusal, an increase in reassurance-seeking behaviors, or somatic symptoms like vague abdominal pain or headaches that prevent school attendance after participating in a drill, may need more robust mental health services, Dr. Loper noted.

Dr. Schonfeld, who is also director of the National Center for School Crisis and Bereavement at Children’s Hospital Los Angeles, called for health care providers to be available to help children process traumatic reactions to these exercises.

Agreeing with Dr. Schonfeld, Dr. Younghans said: “It is vital to debrief with students and staff after drills, making sure that students have a safe space and ample time to speak with trusted staff. As children will undoubtedly have questions and concerns, creating open lines of communication will help alleviate any traumatic effect these drills may have.”
 

Communicating with various stakeholders

Experts also gave recommendations for how clinicians communicate with leaders in their area’s school districts and other members of their communities about these training exercises.

“For primary care providers, it is important to establish meaningful relationships within your community and patient population as much as possible,” Dr. Younghans said. “Having a good relationship with the local schools and being part of the conversation can help increase school and community awareness on the impact these drills can have on students and staff,” she added.

For those pediatricians or other health care providers who serve as consultants to schools, Dr. Schonfeld advised they ask about policies related to exercises and drills, such as what are the limits to what children might be exposed to in a drill, and what requirements there might be at the local and state level in terms of frequency and what the drills will and will not involve.

He also noted that clinicians should encourage school leaders to consider the fact that kids may have personal histories of trauma that are completely unknown to the school when they design these exercises.

School staff and health care providers should explain the nature and reasons for drills, invite family members to express concerns, and make accommodations if necessary for some children to participate in drills in a more limited way, noted Dr. Schonfeld, who is also clinical professor of pediatrics at the University of Southern California, Los Angeles.

“I think health care providers should work with legislators, so that if they require a drill, it must be done in a way that is physically and emotionally safe,” he added.
 

Executing better drills for students’ mental health

Experts also advised on ways to execute these drills that will be least damaging to students.

The AAP statement on Participation of Children and Adolescents in Live Crisis Drills and Exercises, for example, advocates eliminating high-intensity drills, prohibiting deception in drills, and providing accommodations based on children’s vulnerabilities.

Dr. Schonfeld also emphasized, in an interview, that training for an attack need not be extremely realistic to be effective.

“When you are preparing for a crisis, the drills and exercises are for children to practice and develop mastery over something they don’t know how to do fully yet,” said Dr. Schonfeld.

Citing a suggestion from a 2020 report conducted by Everytown for Gun Safety on keeping schools safe from gun violence, Dr. Younghans said, “Schools should be in clear communication with communities and families regarding when drills will be happening,” and advised ensuring that the explanation of drills is developmentally appropriate to the age of the children participating.

The report also recommends conducting drills that do not simulate an actual incident, combining drills with trauma-informed approaches to address students’ well-being during and for a sustained period after the drills, and tracking data on the efficacy and effects of drills.

Dr. Loper suggested ways that clinicians and parents can help navigate the tricky territory of school safety drills.

In his view, they should not be random or unexpected, and anticipatory guidance should be given regarding any visual or auditory stimuli, such as flashing lights or sirens, alarms, or announcements.

“A preventive approach should be utilized to ensure that any child who is experiencing extreme drill-distress be excused from any future disaster drills to prevent retraumatization,” Dr. Loper said.

Physicians interviewed for this piece also provided tips on how to talk about these events with children in a way that is beneficial to their mental health.

“What we want to do is [have a] calm discussion [with kids] about what we are doing and why we are doing it” and guide them through the movements, Dr. Schonfeld said.

When teaching children how to respond to an emergency, some elements of uncertainty need to be discussed. Children need to anticipate “what you might do if you are not in the classroom if something occurs, such as being in the bathroom, or out at recess,” he continued.

Dr. Younghans recommended that parents and staff schedule time to prepare children for the drill and practice in advance, and that behavioral health providers, counselors, and/or primary care providers should be involved in the planning and execution of the drill.

The Georgia Tech study was supported through a grant from Everytown for Gun Safety.

The study authors and experts interviewed for this piece had no financial conflicts to disclose.

Gun attacks in classrooms across the nation have led principals and other school leaders to implement “active shooter” drills to try to increase the safety of their students and faculty.

The drills can range from staging lockdowns and sheltering in place to quasi dramas with mock shooters roaming the halls. Although the goals of these training exercises are important, equally important are the potential negative effects of drills on students’ mental health, according to doctors with expertise in pediatrics and mental health.

“Dramatic simulation of an active shooter event at school would be expected to provoke the same stress response as the real thing,” said Peter L. Loper Jr., MD, a pediatrician and psychiatrist, in an interview. “While ensuring their physical safety is very important, we must be intentional about making sure that we are not doing so at the expense of their psychosocial or emotional safety.”

“Children may not be able to differentiate a dramatic drill from a real event,” emphasized Dr. Loper, of the neuropsychiatry and behavioral science departments at the University of South Carolina, Columbia. “The parts of the brain responsible for our flight-fight-or-freeze response would interpret both simulated and real events identically and produce the same neurohormonal stress-response.”

Indeed, a study published in the journal Humanities & Social Sciences Communications suggested children experienced mental health problems related to participating in active shooter drills. In the large study, a team of statisticians from the Georgia Institute of Technology found that students reported a 42% increase in stress and anxiety and a 38.7% increase in depression during the 90 days following active shooter drills, compared with the 90 days before the drills.

The authors of this study, including Mai ElSherief, PhD, drew these conclusions after analyzing 54 million social media posts before and after drills in 114 schools across 33 states. The researchers analyzed the language of the social media posts by teachers, parents, and students and found increased use of the words hope, love, home, school, kids, community, support, and help after the drills. The researchers considered posting with these terms in the aftermath of the drills to be indicative of having high anxiety.

They included examples of how high stress, anxiety, and depression manifested in specific posts from parents in their report. The following is an example of a poster expressing high anxiety and stress: “are we really gonna normalize school shooter drills?! holy sh* there has to be a real way to avoid these tragedies. sh*t like this cannot be normalized. teachers injured after being shot with plastic pellets ‘execution style’ in active shooter drill.”

The authors also shared this post to serve as an example of a person who seems depressed: “and now we are revisiting the trauma on our kids, forcing them to act out school drills monthly. i don’t get why gen x parents buy into this concept wholeheartedly. things need to change.”

The published material did not include posts from students, but the researchers’ analysis of the content of posts overall showed increased concerns for health and increased concerns about death during the period after drills, compared with before drills.

The authors also conducted focus groups in communities in which drills occurred, and many teachers and parents reported anecdotal evidence of children who were nervous long after the drills were over, with some showing extreme reactions such as panic over a standard fire alarm at school. Overall, the results show that school shooter drills can negatively affect school communities over prolonged periods of time, they concluded.

According to a statement from the American Academy of Pediatrics, “there is a need to be cautious about the potential psychological risks and other unintended consequences of directly involving children in live exercises and drills.”

“These risks and consequences are especially a concern when children are deceived and led to believe there is an actual attack and not a drill,” wrote David Schonfeld, MD, the lead author of the statement on Participation of Children and Adolescents in Live Crisis Drills and Exercises, and colleagues.
 

Managing the fallout

Physicians can help students experiencing mental health problems from these drills, according to doctors interviewed for this piece.

It’s important for providers to know that stress will show up differently in children than in adults, said Chelsea Younghans, MD, a psychiatrist and military officer in Bethesda, Md., in an interview.

“They may see children with headaches, stomach aches, or nonspecific complaints. They may also see children who have not had difficulty with sleep present with nightmares or bed wetting,” she added.

For teens and preteens, validated tools such as the Child PTSD Symptom Scale (CPSS-5) and Child and Adolescent Trauma Screen (CATS) to assess PTSD in youth, may help serve as a starting point for a conversation between providers and their older child population, she noted.

Children who exhibit avoidance or withdrawal behaviors including consistent school refusal, an increase in reassurance-seeking behaviors, or somatic symptoms like vague abdominal pain or headaches that prevent school attendance after participating in a drill, may need more robust mental health services, Dr. Loper noted.

Dr. Schonfeld, who is also director of the National Center for School Crisis and Bereavement at Children’s Hospital Los Angeles, called for health care providers to be available to help children process traumatic reactions to these exercises.

Agreeing with Dr. Schonfeld, Dr. Younghans said: “It is vital to debrief with students and staff after drills, making sure that students have a safe space and ample time to speak with trusted staff. As children will undoubtedly have questions and concerns, creating open lines of communication will help alleviate any traumatic effect these drills may have.”
 

Communicating with various stakeholders

Experts also gave recommendations for how clinicians communicate with leaders in their area’s school districts and other members of their communities about these training exercises.

“For primary care providers, it is important to establish meaningful relationships within your community and patient population as much as possible,” Dr. Younghans said. “Having a good relationship with the local schools and being part of the conversation can help increase school and community awareness on the impact these drills can have on students and staff,” she added.

For those pediatricians or other health care providers who serve as consultants to schools, Dr. Schonfeld advised they ask about policies related to exercises and drills, such as what are the limits to what children might be exposed to in a drill, and what requirements there might be at the local and state level in terms of frequency and what the drills will and will not involve.

He also noted that clinicians should encourage school leaders to consider the fact that kids may have personal histories of trauma that are completely unknown to the school when they design these exercises.

School staff and health care providers should explain the nature and reasons for drills, invite family members to express concerns, and make accommodations if necessary for some children to participate in drills in a more limited way, noted Dr. Schonfeld, who is also clinical professor of pediatrics at the University of Southern California, Los Angeles.

“I think health care providers should work with legislators, so that if they require a drill, it must be done in a way that is physically and emotionally safe,” he added.
 

Executing better drills for students’ mental health

Experts also advised on ways to execute these drills that will be least damaging to students.

The AAP statement on Participation of Children and Adolescents in Live Crisis Drills and Exercises, for example, advocates eliminating high-intensity drills, prohibiting deception in drills, and providing accommodations based on children’s vulnerabilities.

Dr. Schonfeld also emphasized, in an interview, that training for an attack need not be extremely realistic to be effective.

“When you are preparing for a crisis, the drills and exercises are for children to practice and develop mastery over something they don’t know how to do fully yet,” said Dr. Schonfeld.

Citing a suggestion from a 2020 report conducted by Everytown for Gun Safety on keeping schools safe from gun violence, Dr. Younghans said, “Schools should be in clear communication with communities and families regarding when drills will be happening,” and advised ensuring that the explanation of drills is developmentally appropriate to the age of the children participating.

The report also recommends conducting drills that do not simulate an actual incident, combining drills with trauma-informed approaches to address students’ well-being during and for a sustained period after the drills, and tracking data on the efficacy and effects of drills.

Dr. Loper suggested ways that clinicians and parents can help navigate the tricky territory of school safety drills.

In his view, they should not be random or unexpected, and anticipatory guidance should be given regarding any visual or auditory stimuli, such as flashing lights or sirens, alarms, or announcements.

“A preventive approach should be utilized to ensure that any child who is experiencing extreme drill-distress be excused from any future disaster drills to prevent retraumatization,” Dr. Loper said.

Physicians interviewed for this piece also provided tips on how to talk about these events with children in a way that is beneficial to their mental health.

“What we want to do is [have a] calm discussion [with kids] about what we are doing and why we are doing it” and guide them through the movements, Dr. Schonfeld said.

When teaching children how to respond to an emergency, some elements of uncertainty need to be discussed. Children need to anticipate “what you might do if you are not in the classroom if something occurs, such as being in the bathroom, or out at recess,” he continued.

Dr. Younghans recommended that parents and staff schedule time to prepare children for the drill and practice in advance, and that behavioral health providers, counselors, and/or primary care providers should be involved in the planning and execution of the drill.

The Georgia Tech study was supported through a grant from Everytown for Gun Safety.

The study authors and experts interviewed for this piece had no financial conflicts to disclose.

In 2016, as vice president, Joe Biden launched the Cancer Moonshot program just 1 year after his son Beau died from glioblastoma multiforme. His objective, he said, was to “cure” cancer, but to get close to that goal, researchers from two leading National Cancer Institute-designated cancer centers say an infusion of new funding for cancer research is needed to get cancer research just back up to pre-COVID-19 pandemic levels.

There has been a significant decrease in the launch of new clinical trials for cancer and biologic therapies since 2020. “That can affect every aspect of our research operation. It really affected our capacity to continue to move forward at a fast pace. It will require a behemoth effort to get back to pre-COVID times,” said Tanios S. Bekaii-Saab, MD, leader of the gastrointestinal cancer program at Mayo Clinic in Phoenix.

Congress passed the 21st Century Cures Act in 2016 authorizing $1.8 billion for Cancer Moonshot over 7 years. More recently, the program received $194 million from the $6.9 billion National Cancer Institute budget in FY 2022.

Joseph Alvarnas, MD, a hematologist oncologist and vice president of government affairs at City of Hope, Duarte, Calif., sees the Moonshot budget as a potential shortcoming.

“The priorities are well founded and based on what we would think are the most important things to cover, but, if we’re going to achieve these extraordinarily ambitious goals of halving cancer mortality and serving communities more equitably, it’s going to need more funding positioned at making these things real,” he said.

Moonshot is being positioned as an opportunity to double down on efforts started in 2016, but treating cancer is complex and goes well beyond funding new research.

“We know that we have amazing research and progress around innovations that will drive us toward the goal of reducing the death rate from cancer. But we also know that we have tools that aren’t reaching all parts of the country, so we have a great opportunity to make sure that we’re doing all we can to prevent, detect and treat cancer,” Dr. Carnival said.
 

Can cancer be cured?

The Biden administration relaunched Moonshot in 2022 with newly defined goals: Cut the rate of cancer-related deaths in half within 25 years; improve the experience of people with cancer, cancer survivors, and their families; and “end cancer as we know it,” President Biden said in a press conference in February.

Cancer is the second leading cause of death in the United States after heart disease, but it may indeed be possible to cut the total number of cancer-related deaths in half over the next 25 years.

“As a hematologist who’s been involved in both research and clinical care, I think it’s important to realize this is actually doable. Between 1990 and 2020 cancer mortality rates decreased by 31%, and in the last American Cancer Society’s annual report, mortality rates dropped by the largest percentages for 2 consecutive years in a row. The question shifts now from ‘Is this possible? to ‘How do we ensure that it’s possible?’ The spirit of Cancer Moonshot 2.0 is identifying the multiple paths to move this effort forward,” Dr. Alvarnas said.

But without a significant infusion of cash for research, it’s doubtful cancer-related deaths will drop by 50% over the next 25 years.

“There are a lot of big and lofty goals in Cancer Moonshot, and the words ‘ending cancer,’ well those are big words,” Dr. Bekaii-Saab said. “The reality is how do we measure in 25 years the impact of this today? I think it will require significantly more funding over the next few years to achieve the goals set by the Moonshot. Otherwise it will be a 7-year done deal that will accrue a lot of great numbers but won’t make a dent in those goals for the next 25 years. To stop it at some point and not invest more into it, we will probably lose most of the benefit.”

Closing the loop on data sharing

Moonshot has been instrumental in fostering research collaborations by encouraging data sharing among scientists.

“It also brought together a new way for the National Cancer Institute and Department of Energy to drive progress on some of the big data initiatives. The initial Cancer Moonshot infused a sense of urgency and hope into this effort,” said Danielle Carnival, PhD, coordinator of Cancer Moonshot.

Between 2017 and 2022, Cancer Moonshot created more than 70 consortiums or programs, and funded about 240 research projects. Its fundamental goals of improving data sharing and encouraging collaboration are very important, Dr. Bekaii-Saab said.

“Because, historically, what happens with cancer is that researchers compete for resources...and they become very protective of their data. Sharing gets more difficult, collaborations become more onerous, and it becomes counterproductive,” he said.

Dr. Bekaii-Saab highlighted two networks created specifically for data sharing. They include the Human Tumor Atlas for cellular, morphological, and molecular tumor data, and PDXNet, a patient derived xenograft research network.
 

A shift in funding priorities?

Cancer funding has been stagnant for years. When adjusted for growth, it hasn’t had a significant infusion of funding since at least 2003—at least in relative terms, Dr. Bekaii-Saab said. “This affects a lot of the things we do, including NCI-funded clinical trials. It pushes us to work with the private sector, which is not necessarily a detriment, but it doesn’t advance the academic mission at the same level. So, overall, I wouldn’t call it tragic, but I do think we’re falling behind,” he said.

“I think when we do the process for the budget for FY24 and after we’ve had time to really explore the best ideas and build the foundation for some of these new aspects of the Cancer Moonshot, we hope to have something more concrete going toward these efforts,” Dr. Carnival said.

But in addition to funding, Dr. Alvarnas says, it is equally important to address gaps in care. Not all patients have access to existing cancer treatments.

“The great challenge to us in the 2020s is not only about developing new and more effective technologies, but also in doing a better job of getting existing life-saving treatments into the hands of underserved populations. One of the really positive challenges set forth by the Biden administration is the idea that financing care equity is as important, if not more so, than advancing technologies. If there’s been stagnation, it’s because from a government and resourcing point of view, that priority has been ineffectively supported financially.”
 

The pandemic stymies cancer research

The pandemic has had a significant impact on cancer research. As in other fields, it disrupted ongoing research, but it may have also contributed to the loss of employees who resigned in what’s been called the “Great Resignation.” “A lot of employees just decided to change jobs in the middle of the pandemic, which led to a cancer research staffing crisis,” Dr. Bekaii-Saab said.

“We all recognized that turning so much of the attention of the entire biomedical research engine and health system to the COVID-19 pandemic would have an impact across cancer research, screenings and care,” Dr. Carnival said. “There is work to do to get us back to whole, but from a research perspective, we’ve seen a reorientation of the trial networks we were using for COVID-19 research, back to their initial purpose. Some of those are cancer and oncology networks, so we’re excited about that and fully believe that we can catch up.”

But then there’s also the impact the pandemic has had on cancer patients who delayed their care at the primary level. This, Dr. Bekaii-Saab fears, will lead to more patients presenting with more advanced disease in years to come. “One of the biggest problems was that a lot of patients delayed their care at the primary level. My biggest concern is that in the years to come we will see a lot more patients presenting with more advanced cancer.”

In 2016, as vice president, Joe Biden launched the Cancer Moonshot program just 1 year after his son Beau died from glioblastoma multiforme. His objective, he said, was to “cure” cancer, but to get close to that goal, researchers from two leading National Cancer Institute-designated cancer centers say an infusion of new funding for cancer research is needed to get cancer research just back up to pre-COVID-19 pandemic levels.

There has been a significant decrease in the launch of new clinical trials for cancer and biologic therapies since 2020. “That can affect every aspect of our research operation. It really affected our capacity to continue to move forward at a fast pace. It will require a behemoth effort to get back to pre-COVID times,” said Tanios S. Bekaii-Saab, MD, leader of the gastrointestinal cancer program at Mayo Clinic in Phoenix.

Congress passed the 21st Century Cures Act in 2016 authorizing $1.8 billion for Cancer Moonshot over 7 years. More recently, the program received $194 million from the $6.9 billion National Cancer Institute budget in FY 2022.

Joseph Alvarnas, MD, a hematologist oncologist and vice president of government affairs at City of Hope, Duarte, Calif., sees the Moonshot budget as a potential shortcoming.

“The priorities are well founded and based on what we would think are the most important things to cover, but, if we’re going to achieve these extraordinarily ambitious goals of halving cancer mortality and serving communities more equitably, it’s going to need more funding positioned at making these things real,” he said.

Moonshot is being positioned as an opportunity to double down on efforts started in 2016, but treating cancer is complex and goes well beyond funding new research.

“We know that we have amazing research and progress around innovations that will drive us toward the goal of reducing the death rate from cancer. But we also know that we have tools that aren’t reaching all parts of the country, so we have a great opportunity to make sure that we’re doing all we can to prevent, detect and treat cancer,” Dr. Carnival said.
 

Can cancer be cured?

The Biden administration relaunched Moonshot in 2022 with newly defined goals: Cut the rate of cancer-related deaths in half within 25 years; improve the experience of people with cancer, cancer survivors, and their families; and “end cancer as we know it,” President Biden said in a press conference in February.

Cancer is the second leading cause of death in the United States after heart disease, but it may indeed be possible to cut the total number of cancer-related deaths in half over the next 25 years.

“As a hematologist who’s been involved in both research and clinical care, I think it’s important to realize this is actually doable. Between 1990 and 2020 cancer mortality rates decreased by 31%, and in the last American Cancer Society’s annual report, mortality rates dropped by the largest percentages for 2 consecutive years in a row. The question shifts now from ‘Is this possible? to ‘How do we ensure that it’s possible?’ The spirit of Cancer Moonshot 2.0 is identifying the multiple paths to move this effort forward,” Dr. Alvarnas said.

But without a significant infusion of cash for research, it’s doubtful cancer-related deaths will drop by 50% over the next 25 years.

“There are a lot of big and lofty goals in Cancer Moonshot, and the words ‘ending cancer,’ well those are big words,” Dr. Bekaii-Saab said. “The reality is how do we measure in 25 years the impact of this today? I think it will require significantly more funding over the next few years to achieve the goals set by the Moonshot. Otherwise it will be a 7-year done deal that will accrue a lot of great numbers but won’t make a dent in those goals for the next 25 years. To stop it at some point and not invest more into it, we will probably lose most of the benefit.”

Closing the loop on data sharing

Moonshot has been instrumental in fostering research collaborations by encouraging data sharing among scientists.

“It also brought together a new way for the National Cancer Institute and Department of Energy to drive progress on some of the big data initiatives. The initial Cancer Moonshot infused a sense of urgency and hope into this effort,” said Danielle Carnival, PhD, coordinator of Cancer Moonshot.

Between 2017 and 2022, Cancer Moonshot created more than 70 consortiums or programs, and funded about 240 research projects. Its fundamental goals of improving data sharing and encouraging collaboration are very important, Dr. Bekaii-Saab said.

“Because, historically, what happens with cancer is that researchers compete for resources...and they become very protective of their data. Sharing gets more difficult, collaborations become more onerous, and it becomes counterproductive,” he said.

Dr. Bekaii-Saab highlighted two networks created specifically for data sharing. They include the Human Tumor Atlas for cellular, morphological, and molecular tumor data, and PDXNet, a patient derived xenograft research network.
 

A shift in funding priorities?

Cancer funding has been stagnant for years. When adjusted for growth, it hasn’t had a significant infusion of funding since at least 2003—at least in relative terms, Dr. Bekaii-Saab said. “This affects a lot of the things we do, including NCI-funded clinical trials. It pushes us to work with the private sector, which is not necessarily a detriment, but it doesn’t advance the academic mission at the same level. So, overall, I wouldn’t call it tragic, but I do think we’re falling behind,” he said.

“I think when we do the process for the budget for FY24 and after we’ve had time to really explore the best ideas and build the foundation for some of these new aspects of the Cancer Moonshot, we hope to have something more concrete going toward these efforts,” Dr. Carnival said.

But in addition to funding, Dr. Alvarnas says, it is equally important to address gaps in care. Not all patients have access to existing cancer treatments.

“The great challenge to us in the 2020s is not only about developing new and more effective technologies, but also in doing a better job of getting existing life-saving treatments into the hands of underserved populations. One of the really positive challenges set forth by the Biden administration is the idea that financing care equity is as important, if not more so, than advancing technologies. If there’s been stagnation, it’s because from a government and resourcing point of view, that priority has been ineffectively supported financially.”
 

The pandemic stymies cancer research

The pandemic has had a significant impact on cancer research. As in other fields, it disrupted ongoing research, but it may have also contributed to the loss of employees who resigned in what’s been called the “Great Resignation.” “A lot of employees just decided to change jobs in the middle of the pandemic, which led to a cancer research staffing crisis,” Dr. Bekaii-Saab said.

“We all recognized that turning so much of the attention of the entire biomedical research engine and health system to the COVID-19 pandemic would have an impact across cancer research, screenings and care,” Dr. Carnival said. “There is work to do to get us back to whole, but from a research perspective, we’ve seen a reorientation of the trial networks we were using for COVID-19 research, back to their initial purpose. Some of those are cancer and oncology networks, so we’re excited about that and fully believe that we can catch up.”

But then there’s also the impact the pandemic has had on cancer patients who delayed their care at the primary level. This, Dr. Bekaii-Saab fears, will lead to more patients presenting with more advanced disease in years to come. “One of the biggest problems was that a lot of patients delayed their care at the primary level. My biggest concern is that in the years to come we will see a lot more patients presenting with more advanced cancer.”

In 2016, as vice president, Joe Biden launched the Cancer Moonshot program just 1 year after his son Beau died from glioblastoma multiforme. His objective, he said, was to “cure” cancer, but to get close to that goal, researchers from two leading National Cancer Institute-designated cancer centers say an infusion of new funding for cancer research is needed to get cancer research just back up to pre-COVID-19 pandemic levels.

There has been a significant decrease in the launch of new clinical trials for cancer and biologic therapies since 2020. “That can affect every aspect of our research operation. It really affected our capacity to continue to move forward at a fast pace. It will require a behemoth effort to get back to pre-COVID times,” said Tanios S. Bekaii-Saab, MD, leader of the gastrointestinal cancer program at Mayo Clinic in Phoenix.

Congress passed the 21st Century Cures Act in 2016 authorizing $1.8 billion for Cancer Moonshot over 7 years. More recently, the program received $194 million from the $6.9 billion National Cancer Institute budget in FY 2022.

Joseph Alvarnas, MD, a hematologist oncologist and vice president of government affairs at City of Hope, Duarte, Calif., sees the Moonshot budget as a potential shortcoming.

“The priorities are well founded and based on what we would think are the most important things to cover, but, if we’re going to achieve these extraordinarily ambitious goals of halving cancer mortality and serving communities more equitably, it’s going to need more funding positioned at making these things real,” he said.

Moonshot is being positioned as an opportunity to double down on efforts started in 2016, but treating cancer is complex and goes well beyond funding new research.

“We know that we have amazing research and progress around innovations that will drive us toward the goal of reducing the death rate from cancer. But we also know that we have tools that aren’t reaching all parts of the country, so we have a great opportunity to make sure that we’re doing all we can to prevent, detect and treat cancer,” Dr. Carnival said.
 

Can cancer be cured?

The Biden administration relaunched Moonshot in 2022 with newly defined goals: Cut the rate of cancer-related deaths in half within 25 years; improve the experience of people with cancer, cancer survivors, and their families; and “end cancer as we know it,” President Biden said in a press conference in February.

Cancer is the second leading cause of death in the United States after heart disease, but it may indeed be possible to cut the total number of cancer-related deaths in half over the next 25 years.

“As a hematologist who’s been involved in both research and clinical care, I think it’s important to realize this is actually doable. Between 1990 and 2020 cancer mortality rates decreased by 31%, and in the last American Cancer Society’s annual report, mortality rates dropped by the largest percentages for 2 consecutive years in a row. The question shifts now from ‘Is this possible? to ‘How do we ensure that it’s possible?’ The spirit of Cancer Moonshot 2.0 is identifying the multiple paths to move this effort forward,” Dr. Alvarnas said.

But without a significant infusion of cash for research, it’s doubtful cancer-related deaths will drop by 50% over the next 25 years.

“There are a lot of big and lofty goals in Cancer Moonshot, and the words ‘ending cancer,’ well those are big words,” Dr. Bekaii-Saab said. “The reality is how do we measure in 25 years the impact of this today? I think it will require significantly more funding over the next few years to achieve the goals set by the Moonshot. Otherwise it will be a 7-year done deal that will accrue a lot of great numbers but won’t make a dent in those goals for the next 25 years. To stop it at some point and not invest more into it, we will probably lose most of the benefit.”

Closing the loop on data sharing

Moonshot has been instrumental in fostering research collaborations by encouraging data sharing among scientists.

“It also brought together a new way for the National Cancer Institute and Department of Energy to drive progress on some of the big data initiatives. The initial Cancer Moonshot infused a sense of urgency and hope into this effort,” said Danielle Carnival, PhD, coordinator of Cancer Moonshot.

Between 2017 and 2022, Cancer Moonshot created more than 70 consortiums or programs, and funded about 240 research projects. Its fundamental goals of improving data sharing and encouraging collaboration are very important, Dr. Bekaii-Saab said.

“Because, historically, what happens with cancer is that researchers compete for resources...and they become very protective of their data. Sharing gets more difficult, collaborations become more onerous, and it becomes counterproductive,” he said.

Dr. Bekaii-Saab highlighted two networks created specifically for data sharing. They include the Human Tumor Atlas for cellular, morphological, and molecular tumor data, and PDXNet, a patient derived xenograft research network.
 

A shift in funding priorities?

Cancer funding has been stagnant for years. When adjusted for growth, it hasn’t had a significant infusion of funding since at least 2003—at least in relative terms, Dr. Bekaii-Saab said. “This affects a lot of the things we do, including NCI-funded clinical trials. It pushes us to work with the private sector, which is not necessarily a detriment, but it doesn’t advance the academic mission at the same level. So, overall, I wouldn’t call it tragic, but I do think we’re falling behind,” he said.

“I think when we do the process for the budget for FY24 and after we’ve had time to really explore the best ideas and build the foundation for some of these new aspects of the Cancer Moonshot, we hope to have something more concrete going toward these efforts,” Dr. Carnival said.

But in addition to funding, Dr. Alvarnas says, it is equally important to address gaps in care. Not all patients have access to existing cancer treatments.

“The great challenge to us in the 2020s is not only about developing new and more effective technologies, but also in doing a better job of getting existing life-saving treatments into the hands of underserved populations. One of the really positive challenges set forth by the Biden administration is the idea that financing care equity is as important, if not more so, than advancing technologies. If there’s been stagnation, it’s because from a government and resourcing point of view, that priority has been ineffectively supported financially.”
 

The pandemic stymies cancer research

The pandemic has had a significant impact on cancer research. As in other fields, it disrupted ongoing research, but it may have also contributed to the loss of employees who resigned in what’s been called the “Great Resignation.” “A lot of employees just decided to change jobs in the middle of the pandemic, which led to a cancer research staffing crisis,” Dr. Bekaii-Saab said.

“We all recognized that turning so much of the attention of the entire biomedical research engine and health system to the COVID-19 pandemic would have an impact across cancer research, screenings and care,” Dr. Carnival said. “There is work to do to get us back to whole, but from a research perspective, we’ve seen a reorientation of the trial networks we were using for COVID-19 research, back to their initial purpose. Some of those are cancer and oncology networks, so we’re excited about that and fully believe that we can catch up.”

But then there’s also the impact the pandemic has had on cancer patients who delayed their care at the primary level. This, Dr. Bekaii-Saab fears, will lead to more patients presenting with more advanced disease in years to come. “One of the biggest problems was that a lot of patients delayed their care at the primary level. My biggest concern is that in the years to come we will see a lot more patients presenting with more advanced cancer.”

Switching from one biosimilar medication to another is safe and effective, a new systematic review indicates, even though this clinical practice is not governed by current health authority regulations or guidance.

“No reduction in effectiveness or increase in adverse events was detected in biosimilar-to-biosimilar switching studies conducted to date,” the review’s authors noted in their study, published online in BioDrugs.

“The possibility of multiple switches between biosimilars of the same reference biologic is already a reality, and these types of switches are expected to become more common in the future. ... Although it is not covered by current health authority regulations or guidance,” added the authors, led by Hillel P. Cohen, PhD, executive director of scientific affairs at Sandoz, a division of Novartis.

The researchers searched electronic databases through December 2021 and found 23 observational studies that met their search criteria, of which 13 were published in peer-reviewed journals; the remainder appeared in abstract form. The studies totaled 3,657 patients. The researchers did not identify any randomized clinical trials.

“The studies were heterogeneous in size, design, and endpoints, providing data on safety, effectiveness, immunogenicity, pharmacokinetics, patient retention, patient and physician perceptions, and drug-use patterns,” the authors wrote.

The authors found that the majority of studies evaluated switches between biosimilars of infliximab, but they also identified switches between biosimilars of adalimumab, etanercept, and rituximab.

“Some health care providers are hesitant to switch patients from one biosimilar to another biosimilar because of a perceived lack of clinical data on such switches,” Dr. Cohen said in an interview.

The review’s findings – that there were no clinically relevant differences when switching patients from one biosimilar to another – are consistent with the science, Dr. Cohen said. “Physicians should have confidence that the data demonstrate that safety and effectiveness are not impacted if patients switch from one biosimilar to another biosimilar of the same reference biologic,” he said.

Currently, the published data include biosimilars to only four reference biologics. “However, I anticipate additional biosimilar-to-biosimilar switching data will become available in the future,” Dr. Cohen said. “In fact, several new studies have been published in recent months, after the cut-off date for inclusion in our systematic review.”

Switching common in rheumatology, dermatology, and gastroenterology

Biosimilar-to-biosimilar switching was observed most commonly in rheumatology practice, but also was seen in the specialties of dermatology and gastroenterology.

Jeffrey Weinberg, MD, clinical professor of dermatology, Icahn School of Medicine at Mount Sinai, New York City, said in an interview that the study is among the best to date showing that switching biosimilars does not compromise efficacy or safety. 

“I would hypothesize that the interchangeability would apply to psoriasis patients,” Dr. Weinberg said. However, “over the next few years, we will have an increasing number of biosimilars for an increasing number of different molecules. We will need to be vigilant to observe if similar behavior is observed with the biosimilars yet to come.”

Keith Choate, MD, PhD, professor of dermatology, pathology, and genetics, and associate dean for physician-scientist development at Yale University, New Haven, Conn., said that biosimilars have comparable efficacy to the branded medication they replace. “If response is lost to an individual agent, we would not typically then switch to a biosimilar, but would favor another class of therapy or a distinct therapeutic which targets the same pathway.”

When physicians prescribe a biosimilar for rheumatoid arthritis or psoriatic arthritis, in 9 out 10 people, “it’s going to work as well, and it’s not going to cause any more side effects,” said Stanford Shoor, MD, clinical professor of medicine and rheumatology, Stanford (Calif.) University.

The systematic review, even within its limitations, reinforces confidence in the antitumor necrosis factor biosimilars, said Jean-Frederic Colombel, MD, codirector of the Feinstein Inflammatory Bowel Disease Clinical Center at Mount Sinai, New York, and professor of medicine, division of gastroenterology, Icahn School of Medicine at Mount Sinai.

“Still, studies with longer follow-up are needed,” Dr. Colombel said, adding that the remaining questions relate to the efficacy and safety of switching multiple times, which will likely occur in the near future. There will be a “need to provide information to the patient regarding what originator or biosimilar(s) he has been exposed to during the course of his disease.”

Switching will increasingly become the norm, said Miguel Regueiro, MD, chair of the Digestive Disease & Surgery Institute, Cleveland Clinic. In his clinical practice, he has the most experience with Crohn’s disease and ulcerative colitis, and biosimilar-to-biosimilar infliximab switches. “Unless there are data that emerge, I have no concerns with this.” 

He added that it’s an “interesting study that affirms my findings in clinical practice – that one can switch from a biosimilar to biosimilar (of the same reference product).”

The review’s results also make sense from an economic standpoint, said Rajat Bhatt, MD, owner of Prime Rheumatology in Richmond, Tex., and an adjunct faculty member at Caribbean Medical University, Willemstad, Curaçao. “Switching to biosimilars will result in cost savings for the health care system.” Patients on certain insurances also will save by switching to a biosimilar with a lower copay.

However, the review is limited by a relatively small number of studies that have provided primary data on this topic, and most of these were switching from infliximab to a biosimilar for inflammatory bowel disease, said Alfred Kim, MD, PhD, an adult rheumatologist at Barnes-Jewish Hospital, St. Louis, and assistant professor of medicine at Washington University in St. Louis.

As with any meta-analysis evaluating a small number of studies, “broad applicability to all conditions and reference/biosimilar pair can only be assumed. Also, many of the studies used for this meta-analysis are observational, which can introduce a variety of biases that can be difficult to adjust for,” Dr. Kim said. “Nevertheless, these analyses are an important first step in validating the [Food and Drug Administration’s] approach to evaluating biosimilars, as the clinical outcomes are consistent between different biosimilars.”

This systematic review is not enough to prove that all patients will do fine when switching from one biosimilar to another, said Florence Aslinia, MD, a gastroenterologist at the University of Kansas Health System in Kansas City. It’s possible that some patients may not do as well, she said, noting that, in one study of patients with inflammatory bowel disease, 10% of patients on a biosimilar infliximab needed to switch back to the originator infliximab (Remicade, Janssen) because of side effects attributed to the biosimilar. The same thing may or may not happen with biosimilar-to-biosimilar switching, and it requires further study.

The authors did not receive any funding for writing this review. Dr. Cohen is an employee of Sandoz, a division of Novartis. He may own stock in Novartis. Two coauthors are also employees of Sandoz. The other three coauthors reported having financial relationships with numerous pharmaceutical companies, including Sandoz and/or Novartis. Dr. Colombel reported financial relationships with many pharmaceutical companies, including Novartis and other manufacturers of biosimilars. Dr. Regueiro reports financial relationships with numerous pharmaceutical companies, including some manufacturers of biosimilars. Dr. Weinberg reported financial relationships with Celgene, AbbVie, Eli Lilly, and Novartis. Kim reports financial relationships with GlaxoSmithKline, Pfizer, and AstraZeneca. Dr. Aslinia, Dr. Shoor, Dr. Choate, and Dr. Bhatt reported no relevant financial relationships.

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

Switching from one biosimilar medication to another is safe and effective, a new systematic review indicates, even though this clinical practice is not governed by current health authority regulations or guidance.

“No reduction in effectiveness or increase in adverse events was detected in biosimilar-to-biosimilar switching studies conducted to date,” the review’s authors noted in their study, published online in BioDrugs.

“The possibility of multiple switches between biosimilars of the same reference biologic is already a reality, and these types of switches are expected to become more common in the future. ... Although it is not covered by current health authority regulations or guidance,” added the authors, led by Hillel P. Cohen, PhD, executive director of scientific affairs at Sandoz, a division of Novartis.

The researchers searched electronic databases through December 2021 and found 23 observational studies that met their search criteria, of which 13 were published in peer-reviewed journals; the remainder appeared in abstract form. The studies totaled 3,657 patients. The researchers did not identify any randomized clinical trials.

“The studies were heterogeneous in size, design, and endpoints, providing data on safety, effectiveness, immunogenicity, pharmacokinetics, patient retention, patient and physician perceptions, and drug-use patterns,” the authors wrote.

The authors found that the majority of studies evaluated switches between biosimilars of infliximab, but they also identified switches between biosimilars of adalimumab, etanercept, and rituximab.

“Some health care providers are hesitant to switch patients from one biosimilar to another biosimilar because of a perceived lack of clinical data on such switches,” Dr. Cohen said in an interview.

The review’s findings – that there were no clinically relevant differences when switching patients from one biosimilar to another – are consistent with the science, Dr. Cohen said. “Physicians should have confidence that the data demonstrate that safety and effectiveness are not impacted if patients switch from one biosimilar to another biosimilar of the same reference biologic,” he said.

Currently, the published data include biosimilars to only four reference biologics. “However, I anticipate additional biosimilar-to-biosimilar switching data will become available in the future,” Dr. Cohen said. “In fact, several new studies have been published in recent months, after the cut-off date for inclusion in our systematic review.”

Switching common in rheumatology, dermatology, and gastroenterology

Biosimilar-to-biosimilar switching was observed most commonly in rheumatology practice, but also was seen in the specialties of dermatology and gastroenterology.

Jeffrey Weinberg, MD, clinical professor of dermatology, Icahn School of Medicine at Mount Sinai, New York City, said in an interview that the study is among the best to date showing that switching biosimilars does not compromise efficacy or safety. 

“I would hypothesize that the interchangeability would apply to psoriasis patients,” Dr. Weinberg said. However, “over the next few years, we will have an increasing number of biosimilars for an increasing number of different molecules. We will need to be vigilant to observe if similar behavior is observed with the biosimilars yet to come.”

Keith Choate, MD, PhD, professor of dermatology, pathology, and genetics, and associate dean for physician-scientist development at Yale University, New Haven, Conn., said that biosimilars have comparable efficacy to the branded medication they replace. “If response is lost to an individual agent, we would not typically then switch to a biosimilar, but would favor another class of therapy or a distinct therapeutic which targets the same pathway.”

When physicians prescribe a biosimilar for rheumatoid arthritis or psoriatic arthritis, in 9 out 10 people, “it’s going to work as well, and it’s not going to cause any more side effects,” said Stanford Shoor, MD, clinical professor of medicine and rheumatology, Stanford (Calif.) University.

The systematic review, even within its limitations, reinforces confidence in the antitumor necrosis factor biosimilars, said Jean-Frederic Colombel, MD, codirector of the Feinstein Inflammatory Bowel Disease Clinical Center at Mount Sinai, New York, and professor of medicine, division of gastroenterology, Icahn School of Medicine at Mount Sinai.

“Still, studies with longer follow-up are needed,” Dr. Colombel said, adding that the remaining questions relate to the efficacy and safety of switching multiple times, which will likely occur in the near future. There will be a “need to provide information to the patient regarding what originator or biosimilar(s) he has been exposed to during the course of his disease.”

Switching will increasingly become the norm, said Miguel Regueiro, MD, chair of the Digestive Disease & Surgery Institute, Cleveland Clinic. In his clinical practice, he has the most experience with Crohn’s disease and ulcerative colitis, and biosimilar-to-biosimilar infliximab switches. “Unless there are data that emerge, I have no concerns with this.” 

He added that it’s an “interesting study that affirms my findings in clinical practice – that one can switch from a biosimilar to biosimilar (of the same reference product).”

The review’s results also make sense from an economic standpoint, said Rajat Bhatt, MD, owner of Prime Rheumatology in Richmond, Tex., and an adjunct faculty member at Caribbean Medical University, Willemstad, Curaçao. “Switching to biosimilars will result in cost savings for the health care system.” Patients on certain insurances also will save by switching to a biosimilar with a lower copay.

However, the review is limited by a relatively small number of studies that have provided primary data on this topic, and most of these were switching from infliximab to a biosimilar for inflammatory bowel disease, said Alfred Kim, MD, PhD, an adult rheumatologist at Barnes-Jewish Hospital, St. Louis, and assistant professor of medicine at Washington University in St. Louis.

As with any meta-analysis evaluating a small number of studies, “broad applicability to all conditions and reference/biosimilar pair can only be assumed. Also, many of the studies used for this meta-analysis are observational, which can introduce a variety of biases that can be difficult to adjust for,” Dr. Kim said. “Nevertheless, these analyses are an important first step in validating the [Food and Drug Administration’s] approach to evaluating biosimilars, as the clinical outcomes are consistent between different biosimilars.”

This systematic review is not enough to prove that all patients will do fine when switching from one biosimilar to another, said Florence Aslinia, MD, a gastroenterologist at the University of Kansas Health System in Kansas City. It’s possible that some patients may not do as well, she said, noting that, in one study of patients with inflammatory bowel disease, 10% of patients on a biosimilar infliximab needed to switch back to the originator infliximab (Remicade, Janssen) because of side effects attributed to the biosimilar. The same thing may or may not happen with biosimilar-to-biosimilar switching, and it requires further study.

The authors did not receive any funding for writing this review. Dr. Cohen is an employee of Sandoz, a division of Novartis. He may own stock in Novartis. Two coauthors are also employees of Sandoz. The other three coauthors reported having financial relationships with numerous pharmaceutical companies, including Sandoz and/or Novartis. Dr. Colombel reported financial relationships with many pharmaceutical companies, including Novartis and other manufacturers of biosimilars. Dr. Regueiro reports financial relationships with numerous pharmaceutical companies, including some manufacturers of biosimilars. Dr. Weinberg reported financial relationships with Celgene, AbbVie, Eli Lilly, and Novartis. Kim reports financial relationships with GlaxoSmithKline, Pfizer, and AstraZeneca. Dr. Aslinia, Dr. Shoor, Dr. Choate, and Dr. Bhatt reported no relevant financial relationships.

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

Switching from one biosimilar medication to another is safe and effective, a new systematic review indicates, even though this clinical practice is not governed by current health authority regulations or guidance.

“No reduction in effectiveness or increase in adverse events was detected in biosimilar-to-biosimilar switching studies conducted to date,” the review’s authors noted in their study, published online in BioDrugs.

“The possibility of multiple switches between biosimilars of the same reference biologic is already a reality, and these types of switches are expected to become more common in the future. ... Although it is not covered by current health authority regulations or guidance,” added the authors, led by Hillel P. Cohen, PhD, executive director of scientific affairs at Sandoz, a division of Novartis.

The researchers searched electronic databases through December 2021 and found 23 observational studies that met their search criteria, of which 13 were published in peer-reviewed journals; the remainder appeared in abstract form. The studies totaled 3,657 patients. The researchers did not identify any randomized clinical trials.

“The studies were heterogeneous in size, design, and endpoints, providing data on safety, effectiveness, immunogenicity, pharmacokinetics, patient retention, patient and physician perceptions, and drug-use patterns,” the authors wrote.

The authors found that the majority of studies evaluated switches between biosimilars of infliximab, but they also identified switches between biosimilars of adalimumab, etanercept, and rituximab.

“Some health care providers are hesitant to switch patients from one biosimilar to another biosimilar because of a perceived lack of clinical data on such switches,” Dr. Cohen said in an interview.

The review’s findings – that there were no clinically relevant differences when switching patients from one biosimilar to another – are consistent with the science, Dr. Cohen said. “Physicians should have confidence that the data demonstrate that safety and effectiveness are not impacted if patients switch from one biosimilar to another biosimilar of the same reference biologic,” he said.

Currently, the published data include biosimilars to only four reference biologics. “However, I anticipate additional biosimilar-to-biosimilar switching data will become available in the future,” Dr. Cohen said. “In fact, several new studies have been published in recent months, after the cut-off date for inclusion in our systematic review.”

Switching common in rheumatology, dermatology, and gastroenterology

Biosimilar-to-biosimilar switching was observed most commonly in rheumatology practice, but also was seen in the specialties of dermatology and gastroenterology.

Jeffrey Weinberg, MD, clinical professor of dermatology, Icahn School of Medicine at Mount Sinai, New York City, said in an interview that the study is among the best to date showing that switching biosimilars does not compromise efficacy or safety. 

“I would hypothesize that the interchangeability would apply to psoriasis patients,” Dr. Weinberg said. However, “over the next few years, we will have an increasing number of biosimilars for an increasing number of different molecules. We will need to be vigilant to observe if similar behavior is observed with the biosimilars yet to come.”

Keith Choate, MD, PhD, professor of dermatology, pathology, and genetics, and associate dean for physician-scientist development at Yale University, New Haven, Conn., said that biosimilars have comparable efficacy to the branded medication they replace. “If response is lost to an individual agent, we would not typically then switch to a biosimilar, but would favor another class of therapy or a distinct therapeutic which targets the same pathway.”

When physicians prescribe a biosimilar for rheumatoid arthritis or psoriatic arthritis, in 9 out 10 people, “it’s going to work as well, and it’s not going to cause any more side effects,” said Stanford Shoor, MD, clinical professor of medicine and rheumatology, Stanford (Calif.) University.

The systematic review, even within its limitations, reinforces confidence in the antitumor necrosis factor biosimilars, said Jean-Frederic Colombel, MD, codirector of the Feinstein Inflammatory Bowel Disease Clinical Center at Mount Sinai, New York, and professor of medicine, division of gastroenterology, Icahn School of Medicine at Mount Sinai.

“Still, studies with longer follow-up are needed,” Dr. Colombel said, adding that the remaining questions relate to the efficacy and safety of switching multiple times, which will likely occur in the near future. There will be a “need to provide information to the patient regarding what originator or biosimilar(s) he has been exposed to during the course of his disease.”

Switching will increasingly become the norm, said Miguel Regueiro, MD, chair of the Digestive Disease & Surgery Institute, Cleveland Clinic. In his clinical practice, he has the most experience with Crohn’s disease and ulcerative colitis, and biosimilar-to-biosimilar infliximab switches. “Unless there are data that emerge, I have no concerns with this.” 

He added that it’s an “interesting study that affirms my findings in clinical practice – that one can switch from a biosimilar to biosimilar (of the same reference product).”

The review’s results also make sense from an economic standpoint, said Rajat Bhatt, MD, owner of Prime Rheumatology in Richmond, Tex., and an adjunct faculty member at Caribbean Medical University, Willemstad, Curaçao. “Switching to biosimilars will result in cost savings for the health care system.” Patients on certain insurances also will save by switching to a biosimilar with a lower copay.

However, the review is limited by a relatively small number of studies that have provided primary data on this topic, and most of these were switching from infliximab to a biosimilar for inflammatory bowel disease, said Alfred Kim, MD, PhD, an adult rheumatologist at Barnes-Jewish Hospital, St. Louis, and assistant professor of medicine at Washington University in St. Louis.

As with any meta-analysis evaluating a small number of studies, “broad applicability to all conditions and reference/biosimilar pair can only be assumed. Also, many of the studies used for this meta-analysis are observational, which can introduce a variety of biases that can be difficult to adjust for,” Dr. Kim said. “Nevertheless, these analyses are an important first step in validating the [Food and Drug Administration’s] approach to evaluating biosimilars, as the clinical outcomes are consistent between different biosimilars.”

This systematic review is not enough to prove that all patients will do fine when switching from one biosimilar to another, said Florence Aslinia, MD, a gastroenterologist at the University of Kansas Health System in Kansas City. It’s possible that some patients may not do as well, she said, noting that, in one study of patients with inflammatory bowel disease, 10% of patients on a biosimilar infliximab needed to switch back to the originator infliximab (Remicade, Janssen) because of side effects attributed to the biosimilar. The same thing may or may not happen with biosimilar-to-biosimilar switching, and it requires further study.

The authors did not receive any funding for writing this review. Dr. Cohen is an employee of Sandoz, a division of Novartis. He may own stock in Novartis. Two coauthors are also employees of Sandoz. The other three coauthors reported having financial relationships with numerous pharmaceutical companies, including Sandoz and/or Novartis. Dr. Colombel reported financial relationships with many pharmaceutical companies, including Novartis and other manufacturers of biosimilars. Dr. Regueiro reports financial relationships with numerous pharmaceutical companies, including some manufacturers of biosimilars. Dr. Weinberg reported financial relationships with Celgene, AbbVie, Eli Lilly, and Novartis. Kim reports financial relationships with GlaxoSmithKline, Pfizer, and AstraZeneca. Dr. Aslinia, Dr. Shoor, Dr. Choate, and Dr. Bhatt reported no relevant financial relationships.

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

I’m pretty sure my ancestors came from Europe. And, as far as I know, I have no relatives in Australia. But, I must have some cosmic relationship with the Land Down Under because as I review articles for these columns I have an uncanny attraction to those coming out of Australia. Most of them are about sleep, one of my obsessions, and in general they address simple questions that no one has thought to ask.

My most recent Australia-based nugget appeared in the August edition of Pediatrics.

The researchers in Sidney were seeking to define “growing pains” by embarking on an extensive review of the medical literature. Beginning with thousands of articles, they winnowed these down to 145 studies. They found “there was extremely poor consensus between studies.” The most consistent components were the lower limb, bilaterality, evening onset, a normal physical assessment, and an episodic or recurrent course. However, all of these factors were mentioned in 50% or less of the articles they reviewed. The investigators wisely concluded that clinicians “should be wary of relying on the diagnosis to direct treatment decisions.”

This may seem like one small step for pediatrics. You may have reassured parents that none of your patients ever died of “growing pains” and the condition would eventually resolve. Hopefully, you were correct and that your case rate fatality is zero. But I suspect it wouldn’t take too long to unearth a wealth of malpractices cases in which another pediatrician’s patient died with an illness whose eventual discovery was tragically delayed by a period of false reassurance and diagnosis that the child merely had growing pains.

I can’t remember which of my sage instructors told me to never use “growing pains” as a diagnosis. It may have just been something I stumbled upon as my clinical experience grew. While holding firm to my commitment to never use it as a diagnosis, it became abundantly clear that I was seeing a large group of children (toddlers to early adolescents) who were experiencing lower leg pains in the early evening, often bad enough to wake them.

It took a bit longer to discover that most often these painful episodes occurred in children who were acutely or chronically sleep deprived. Occasionally, the pain would come on days in which the child had been unusually physically active. However, in most cases there was little correlation with lower limb activity.

I will admit that my observations were colored by my growing obsession that sleep deprivation is the root of many evils, including the phenomenon known as attention-deficit/hyperactivity disorder. I was even bold enough to include it in my one of the books I have written (Is My Child Overtired? Simon & Schuster, 2001). Nonetheless, I am still convinced that every investigation of a child with evening leg pains should include a thorough history of the child’s sleep history.

The bottom line is that these Australian researchers have done us a great favor with their research. However, I think they should have made a bolder statement in their conclusion. It is clear to me that “growing pains” should be removed as a diagnosis and no longer be reimbursed by third-party payers.

The void created by that action should spur some research into a better-defined diagnosis of the condition. If you want to use my tack and label it “nocturnal leg pains of childhood” and suggest better sleep hygiene, I will be flattered. But more importantly, take the time to take a good history, do a thorough exam, and then follow up, follow up, follow up, until the problem resolves.
 

Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Other than a Littman stethoscope he accepted as a first-year medical student in 1966, Dr. Wilkoff reports having nothing to disclose. Email him at [email protected].

I’m pretty sure my ancestors came from Europe. And, as far as I know, I have no relatives in Australia. But, I must have some cosmic relationship with the Land Down Under because as I review articles for these columns I have an uncanny attraction to those coming out of Australia. Most of them are about sleep, one of my obsessions, and in general they address simple questions that no one has thought to ask.

My most recent Australia-based nugget appeared in the August edition of Pediatrics.

The researchers in Sidney were seeking to define “growing pains” by embarking on an extensive review of the medical literature. Beginning with thousands of articles, they winnowed these down to 145 studies. They found “there was extremely poor consensus between studies.” The most consistent components were the lower limb, bilaterality, evening onset, a normal physical assessment, and an episodic or recurrent course. However, all of these factors were mentioned in 50% or less of the articles they reviewed. The investigators wisely concluded that clinicians “should be wary of relying on the diagnosis to direct treatment decisions.”

This may seem like one small step for pediatrics. You may have reassured parents that none of your patients ever died of “growing pains” and the condition would eventually resolve. Hopefully, you were correct and that your case rate fatality is zero. But I suspect it wouldn’t take too long to unearth a wealth of malpractices cases in which another pediatrician’s patient died with an illness whose eventual discovery was tragically delayed by a period of false reassurance and diagnosis that the child merely had growing pains.

I can’t remember which of my sage instructors told me to never use “growing pains” as a diagnosis. It may have just been something I stumbled upon as my clinical experience grew. While holding firm to my commitment to never use it as a diagnosis, it became abundantly clear that I was seeing a large group of children (toddlers to early adolescents) who were experiencing lower leg pains in the early evening, often bad enough to wake them.

It took a bit longer to discover that most often these painful episodes occurred in children who were acutely or chronically sleep deprived. Occasionally, the pain would come on days in which the child had been unusually physically active. However, in most cases there was little correlation with lower limb activity.

I will admit that my observations were colored by my growing obsession that sleep deprivation is the root of many evils, including the phenomenon known as attention-deficit/hyperactivity disorder. I was even bold enough to include it in my one of the books I have written (Is My Child Overtired? Simon & Schuster, 2001). Nonetheless, I am still convinced that every investigation of a child with evening leg pains should include a thorough history of the child’s sleep history.

The bottom line is that these Australian researchers have done us a great favor with their research. However, I think they should have made a bolder statement in their conclusion. It is clear to me that “growing pains” should be removed as a diagnosis and no longer be reimbursed by third-party payers.

The void created by that action should spur some research into a better-defined diagnosis of the condition. If you want to use my tack and label it “nocturnal leg pains of childhood” and suggest better sleep hygiene, I will be flattered. But more importantly, take the time to take a good history, do a thorough exam, and then follow up, follow up, follow up, until the problem resolves.
 

Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Other than a Littman stethoscope he accepted as a first-year medical student in 1966, Dr. Wilkoff reports having nothing to disclose. Email him at [email protected].

I’m pretty sure my ancestors came from Europe. And, as far as I know, I have no relatives in Australia. But, I must have some cosmic relationship with the Land Down Under because as I review articles for these columns I have an uncanny attraction to those coming out of Australia. Most of them are about sleep, one of my obsessions, and in general they address simple questions that no one has thought to ask.

My most recent Australia-based nugget appeared in the August edition of Pediatrics.

The researchers in Sidney were seeking to define “growing pains” by embarking on an extensive review of the medical literature. Beginning with thousands of articles, they winnowed these down to 145 studies. They found “there was extremely poor consensus between studies.” The most consistent components were the lower limb, bilaterality, evening onset, a normal physical assessment, and an episodic or recurrent course. However, all of these factors were mentioned in 50% or less of the articles they reviewed. The investigators wisely concluded that clinicians “should be wary of relying on the diagnosis to direct treatment decisions.”

This may seem like one small step for pediatrics. You may have reassured parents that none of your patients ever died of “growing pains” and the condition would eventually resolve. Hopefully, you were correct and that your case rate fatality is zero. But I suspect it wouldn’t take too long to unearth a wealth of malpractices cases in which another pediatrician’s patient died with an illness whose eventual discovery was tragically delayed by a period of false reassurance and diagnosis that the child merely had growing pains.

I can’t remember which of my sage instructors told me to never use “growing pains” as a diagnosis. It may have just been something I stumbled upon as my clinical experience grew. While holding firm to my commitment to never use it as a diagnosis, it became abundantly clear that I was seeing a large group of children (toddlers to early adolescents) who were experiencing lower leg pains in the early evening, often bad enough to wake them.

It took a bit longer to discover that most often these painful episodes occurred in children who were acutely or chronically sleep deprived. Occasionally, the pain would come on days in which the child had been unusually physically active. However, in most cases there was little correlation with lower limb activity.

I will admit that my observations were colored by my growing obsession that sleep deprivation is the root of many evils, including the phenomenon known as attention-deficit/hyperactivity disorder. I was even bold enough to include it in my one of the books I have written (Is My Child Overtired? Simon & Schuster, 2001). Nonetheless, I am still convinced that every investigation of a child with evening leg pains should include a thorough history of the child’s sleep history.

The bottom line is that these Australian researchers have done us a great favor with their research. However, I think they should have made a bolder statement in their conclusion. It is clear to me that “growing pains” should be removed as a diagnosis and no longer be reimbursed by third-party payers.

The void created by that action should spur some research into a better-defined diagnosis of the condition. If you want to use my tack and label it “nocturnal leg pains of childhood” and suggest better sleep hygiene, I will be flattered. But more importantly, take the time to take a good history, do a thorough exam, and then follow up, follow up, follow up, until the problem resolves.
 

Dr. Wilkoff practiced primary care pediatrics in Brunswick, Maine, for nearly 40 years. He has authored several books on behavioral pediatrics, including “How to Say No to Your Toddler.” Other than a Littman stethoscope he accepted as a first-year medical student in 1966, Dr. Wilkoff reports having nothing to disclose. Email him at [email protected].

Fewer than 1 in 3 people infected with hepatitis C virus (HCV) begin receiving treatment within a year of their diagnosis, according to a new report by the Centers for Disease Control and Prevention.

Although HCV infection can be cured in more than 95% of patients with safe, oral medication, many barriers prevent people from receiving the care they need, experts say. These include insurance restrictions and the need for specialist visits.

“If we are going to make an impact against hepatitis C, we need to connect more people to treatments and reduce disparities of access to diagnosis and treatment,” said Carolyn Wester, MD, MPH, director of the CDC’s Division of Viral Hepatitis, during an Aug. 9 press call. “People shouldn’t have to jump over hurdles to access lifesaving treatments.”

The CDC report was published  in Vital Signs.

An estimated 2.2 million Americans are living with HCV infection. The most recent data indicate that new infections increased more than threefold from 2011 to 2019. HCV transmission usually occurs through contact with the blood of an infected person. Today, most people become infected with the virus by sharing needles, syringes, and other equipment used to inject drugs, according to the CDC.

The researchers used a nationwide administrative claims database to identify more than 47,600 adults diagnosed with HCV infection from Jan. 30, 2019 through Oct. 31, 2020. Most patients (79%) were Medicaid recipients, 7% were Medicare patients, and 14% had private insurance. CDC researchers found that just 23% of Medicaid recipients, 28% of Medicare patients, and 35% of patients with private insurance began receiving direct-acting antiviral agents (DAAs) within 360 days of receiving a positive HCV test result. Of those who did receive treatment, most (from 75% to 84%) began receiving treatment within 180 days of their diagnosis.

Among people on Medicaid plans, patients who lived in states with treatment restrictions were 23% less likely to receive timely treatment (adjusted odds ratio, 0.77; 95% confidence interval, 0.74-0.81), compared with those living in states with no restrictions. Medicaid patients who were Black or of another race other than White were also less likely than White patients to be treated for HCV within the same year as their diagnosis. The lowest rates of treatment were among adults younger than 40 years, regardless of insurance type. This age group had the highest rates of new infections.

Actual treatment percentages may be even smaller than the number captured in this study, because the study included patients with continuous insurance coverage, Dr. Wester said, “so in many ways, [these] are the individuals who are set up to have the best access to care and treatment.”

Dr. Wester mentioned several steps that could improve access to DAAs for patients with HCV infection:

• Provide treatment outside of specialist offices, such as primary care and community clinics, substance use treatment centers, and syringe services programs.
• Increase the number of primary care providers offering hepatitis C treatment.
• Provide treatment in as few visits as possible.
• Eliminate restrictions by insurance providers on treatment.

A ‘health injustice’

While DAA treatments are effective, they are also expensive. Generic medications cost around $24,000 for a 12-week course, and some brand-name drugs are estimated to cost more than three times that amount. Many insurance companies, therefore, have treatment restrictions in place, including the following:

• There must be evidence of liver fibrosis for a patient to be treated.
• The doctor prescribing treatment must be a liver specialist or an infectious disease specialist.
• The patient must meet sobriety requirements.
• Treatment requires preauthorization approval from insurance carriers.

These criteria prevent patients from getting the care that they need, said Jonathan Mermin, MD, MPH, director of the CDC’s National Center for HIV, Viral Hepatitis, STD, and TB Prevention, during the press call. “Restricting access to hepatitis C treatment turns an infectious disease into a health injustice,” he added.

Oluwaseun Falade-Nwulia, MBBS, MPH, an infectious disease specialist and assistant professor of medicine at the Johns Hopkins University School of Medicine, Baltimore, emphasized the importance of removing barriers to HCV treatment and expanding HCV care out of specialist offices. She noted that treatment for HCV infection should begin immediately after a patient’s diagnosis. Previously, guidelines recommended waiting 6 months from the time a patient was diagnosed with HCV to begin treatment to see whether the patient’s body could clear the infection on its own. Now, guidelines recommend that after a diagnosis of acute HCV, “HCV treatment should be initiated without awaiting spontaneous resolution.” But some insurance companies still ask for evidence that a patient has been infected for at least 6 months before approving therapy, Dr. Falade-Nwulia noted.

“We have a system that has so many structural barriers for patients who we know already have so many social determinants of health working against them to access any health care,” she said. “I think it’s doubly devastating that patients that can actually get to a provider and get a prescription may still not have access to [the medication] because of structural barriers, such as restrictions based on a need to prove chronicity.”

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

Fewer than 1 in 3 people infected with hepatitis C virus (HCV) begin receiving treatment within a year of their diagnosis, according to a new report by the Centers for Disease Control and Prevention.

Although HCV infection can be cured in more than 95% of patients with safe, oral medication, many barriers prevent people from receiving the care they need, experts say. These include insurance restrictions and the need for specialist visits.

“If we are going to make an impact against hepatitis C, we need to connect more people to treatments and reduce disparities of access to diagnosis and treatment,” said Carolyn Wester, MD, MPH, director of the CDC’s Division of Viral Hepatitis, during an Aug. 9 press call. “People shouldn’t have to jump over hurdles to access lifesaving treatments.”

The CDC report was published  in Vital Signs.

An estimated 2.2 million Americans are living with HCV infection. The most recent data indicate that new infections increased more than threefold from 2011 to 2019. HCV transmission usually occurs through contact with the blood of an infected person. Today, most people become infected with the virus by sharing needles, syringes, and other equipment used to inject drugs, according to the CDC.

The researchers used a nationwide administrative claims database to identify more than 47,600 adults diagnosed with HCV infection from Jan. 30, 2019 through Oct. 31, 2020. Most patients (79%) were Medicaid recipients, 7% were Medicare patients, and 14% had private insurance. CDC researchers found that just 23% of Medicaid recipients, 28% of Medicare patients, and 35% of patients with private insurance began receiving direct-acting antiviral agents (DAAs) within 360 days of receiving a positive HCV test result. Of those who did receive treatment, most (from 75% to 84%) began receiving treatment within 180 days of their diagnosis.

Among people on Medicaid plans, patients who lived in states with treatment restrictions were 23% less likely to receive timely treatment (adjusted odds ratio, 0.77; 95% confidence interval, 0.74-0.81), compared with those living in states with no restrictions. Medicaid patients who were Black or of another race other than White were also less likely than White patients to be treated for HCV within the same year as their diagnosis. The lowest rates of treatment were among adults younger than 40 years, regardless of insurance type. This age group had the highest rates of new infections.

Actual treatment percentages may be even smaller than the number captured in this study, because the study included patients with continuous insurance coverage, Dr. Wester said, “so in many ways, [these] are the individuals who are set up to have the best access to care and treatment.”

Dr. Wester mentioned several steps that could improve access to DAAs for patients with HCV infection:

• Provide treatment outside of specialist offices, such as primary care and community clinics, substance use treatment centers, and syringe services programs.
• Increase the number of primary care providers offering hepatitis C treatment.
• Provide treatment in as few visits as possible.
• Eliminate restrictions by insurance providers on treatment.

A ‘health injustice’

While DAA treatments are effective, they are also expensive. Generic medications cost around $24,000 for a 12-week course, and some brand-name drugs are estimated to cost more than three times that amount. Many insurance companies, therefore, have treatment restrictions in place, including the following:

• There must be evidence of liver fibrosis for a patient to be treated.
• The doctor prescribing treatment must be a liver specialist or an infectious disease specialist.
• The patient must meet sobriety requirements.
• Treatment requires preauthorization approval from insurance carriers.

These criteria prevent patients from getting the care that they need, said Jonathan Mermin, MD, MPH, director of the CDC’s National Center for HIV, Viral Hepatitis, STD, and TB Prevention, during the press call. “Restricting access to hepatitis C treatment turns an infectious disease into a health injustice,” he added.

Oluwaseun Falade-Nwulia, MBBS, MPH, an infectious disease specialist and assistant professor of medicine at the Johns Hopkins University School of Medicine, Baltimore, emphasized the importance of removing barriers to HCV treatment and expanding HCV care out of specialist offices. She noted that treatment for HCV infection should begin immediately after a patient’s diagnosis. Previously, guidelines recommended waiting 6 months from the time a patient was diagnosed with HCV to begin treatment to see whether the patient’s body could clear the infection on its own. Now, guidelines recommend that after a diagnosis of acute HCV, “HCV treatment should be initiated without awaiting spontaneous resolution.” But some insurance companies still ask for evidence that a patient has been infected for at least 6 months before approving therapy, Dr. Falade-Nwulia noted.

“We have a system that has so many structural barriers for patients who we know already have so many social determinants of health working against them to access any health care,” she said. “I think it’s doubly devastating that patients that can actually get to a provider and get a prescription may still not have access to [the medication] because of structural barriers, such as restrictions based on a need to prove chronicity.”

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

Fewer than 1 in 3 people infected with hepatitis C virus (HCV) begin receiving treatment within a year of their diagnosis, according to a new report by the Centers for Disease Control and Prevention.

Although HCV infection can be cured in more than 95% of patients with safe, oral medication, many barriers prevent people from receiving the care they need, experts say. These include insurance restrictions and the need for specialist visits.

“If we are going to make an impact against hepatitis C, we need to connect more people to treatments and reduce disparities of access to diagnosis and treatment,” said Carolyn Wester, MD, MPH, director of the CDC’s Division of Viral Hepatitis, during an Aug. 9 press call. “People shouldn’t have to jump over hurdles to access lifesaving treatments.”

The CDC report was published  in Vital Signs.

An estimated 2.2 million Americans are living with HCV infection. The most recent data indicate that new infections increased more than threefold from 2011 to 2019. HCV transmission usually occurs through contact with the blood of an infected person. Today, most people become infected with the virus by sharing needles, syringes, and other equipment used to inject drugs, according to the CDC.

The researchers used a nationwide administrative claims database to identify more than 47,600 adults diagnosed with HCV infection from Jan. 30, 2019 through Oct. 31, 2020. Most patients (79%) were Medicaid recipients, 7% were Medicare patients, and 14% had private insurance. CDC researchers found that just 23% of Medicaid recipients, 28% of Medicare patients, and 35% of patients with private insurance began receiving direct-acting antiviral agents (DAAs) within 360 days of receiving a positive HCV test result. Of those who did receive treatment, most (from 75% to 84%) began receiving treatment within 180 days of their diagnosis.

Among people on Medicaid plans, patients who lived in states with treatment restrictions were 23% less likely to receive timely treatment (adjusted odds ratio, 0.77; 95% confidence interval, 0.74-0.81), compared with those living in states with no restrictions. Medicaid patients who were Black or of another race other than White were also less likely than White patients to be treated for HCV within the same year as their diagnosis. The lowest rates of treatment were among adults younger than 40 years, regardless of insurance type. This age group had the highest rates of new infections.

Actual treatment percentages may be even smaller than the number captured in this study, because the study included patients with continuous insurance coverage, Dr. Wester said, “so in many ways, [these] are the individuals who are set up to have the best access to care and treatment.”

Dr. Wester mentioned several steps that could improve access to DAAs for patients with HCV infection:

• Provide treatment outside of specialist offices, such as primary care and community clinics, substance use treatment centers, and syringe services programs.
• Increase the number of primary care providers offering hepatitis C treatment.
• Provide treatment in as few visits as possible.
• Eliminate restrictions by insurance providers on treatment.

A ‘health injustice’

While DAA treatments are effective, they are also expensive. Generic medications cost around $24,000 for a 12-week course, and some brand-name drugs are estimated to cost more than three times that amount. Many insurance companies, therefore, have treatment restrictions in place, including the following:

• There must be evidence of liver fibrosis for a patient to be treated.
• The doctor prescribing treatment must be a liver specialist or an infectious disease specialist.
• The patient must meet sobriety requirements.
• Treatment requires preauthorization approval from insurance carriers.

These criteria prevent patients from getting the care that they need, said Jonathan Mermin, MD, MPH, director of the CDC’s National Center for HIV, Viral Hepatitis, STD, and TB Prevention, during the press call. “Restricting access to hepatitis C treatment turns an infectious disease into a health injustice,” he added.

Oluwaseun Falade-Nwulia, MBBS, MPH, an infectious disease specialist and assistant professor of medicine at the Johns Hopkins University School of Medicine, Baltimore, emphasized the importance of removing barriers to HCV treatment and expanding HCV care out of specialist offices. She noted that treatment for HCV infection should begin immediately after a patient’s diagnosis. Previously, guidelines recommended waiting 6 months from the time a patient was diagnosed with HCV to begin treatment to see whether the patient’s body could clear the infection on its own. Now, guidelines recommend that after a diagnosis of acute HCV, “HCV treatment should be initiated without awaiting spontaneous resolution.” But some insurance companies still ask for evidence that a patient has been infected for at least 6 months before approving therapy, Dr. Falade-Nwulia noted.

“We have a system that has so many structural barriers for patients who we know already have so many social determinants of health working against them to access any health care,” she said. “I think it’s doubly devastating that patients that can actually get to a provider and get a prescription may still not have access to [the medication] because of structural barriers, such as restrictions based on a need to prove chronicity.”

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

Two very different sets of clinical evidence have offered new twists on how nonadherence to cardiovascular medicines not only leads to suboptimal outcomes, but also complicates the data from clinical studies.

One study, a subanalysis of a major trial, outlined how taking more than the assigned therapy – that is, nonadherence by taking too much rather than too little – skewed results. The other was a trial demonstrating that early use of an invasive procedure is not a strategy to compensate for nonadherence to guideline-directed medical therapy (GDMT).

Bruce Jancin/Frontline Medical News

“Both studies provide a fresh reminder that nonadherence is a significant problem in cardiology overall, but also in the trial setting when we are trying to interpret study results,” explained Usam Baber, MD, director of interventional cardiology, University of Oklahoma Health, Oklahoma City, coauthor of an editorial accompanying the two published studies.

Dr. Baber was the first author of a unifying editorial that addressed the issues raised by each. In an interview, Dr. Baber said the studies had unique take-home messages but together highlight important issues of nonadherence.
 

MASTER DAPT: Too much medicine

The subanalysis was performed on data generated by MASTER DAPT, a study evaluating whether a relatively short course of dual-antiplatelet therapy (DAPT) in patients at high risk of bleeding could preserve protection against major adverse cardiovascular events (MACE) while reducing risk of adverse events. The problem was that nonadherence muddied the primary message.

In MASTER DAPT, 1 month of DAPT was compared with a standard therapy of at least 2 additional months of DAPT following revascularization and placement of a biodegradable polymer stent. Enrollment in the study was restricted to those with a high risk of bleeding, the report of the primary results showed.

The major message of MASTER DAPT was that the abbreviated course of DAPT was noninferior for preventing MACE but resulted in lower rates of clinically relevant bleeding in those patients without an indication for oral anticoagulation (OAC). In the subgroup with an indication for OAC, there was no bleeding benefit.

However, when the results were reexamined in the context of adherence, the benefit of the shorter course was found to be underestimated. Relative to 9.4% in the standard-therapy arm, the nonadherence rate in the experimental arm was 20.2%, most of whom did not stop therapy at 1 month. They instead remained on the antiplatelet therapy, failing to adhere to the study protocol.

This form of nonadherence, taking more DAPT than assigned, was particularly common in the group with an indication for oral anticoagulation (OAC). In this group, nearly 25% assigned to an abbreviated course remained on DAPT for more than 6 months.

In the intention-to-treat analysis, there was no difference between abbreviated and standard DAPT for MACE whether or not patients had an indication for OAC. In other words, the new analysis showed a reduced risk of bleeding among all patients, whether taking OAC or not after controlling for nonadherence.

In addition, this MASTER DAPT analysis found that a high proportion of patients taking OAC did not discontinue their single-antiplatelet therapy (SAPT) after 6 months as specified.

When correcting for this failure to adhere to the MASTER DAPT protocol in a patient population at high bleeding risk, the new analysis “suggests for the first time that discontinuation of SAPT at 6 months after percutaneous intervention is associated with less bleeding without an increase in ischemic events,” Marco Valgimigli, MD, PhD, director of clinical research, Inselspital University Hospital, Bern, Switzerland, reported in the Journal of the American College of Cardiology.

The findings “reinforce the importance of accounting and correcting for nonadherence” in order to reduce bias in the assessment of treatment effects, according to Dr. Valgimigli, principal investigator of MASTER DAPT and this substudy.

“The first interesting message from this study is that clinicians are reluctant to stop SAPT in these patients even in the setting of a randomized controlled trial,” Dr. Valgimigli said in an interview.

In addition, this substudy, which was prespecified in the MASTER DAPT protocol and employed “a very sophisticated methodology” to control for the effect of adherence, extends the value of a conservative approach to those who are candidates for OAC.

“The main clinical message is that SAPT needs to be discontinued after 6 months in OAC patients, and clinicians need to stop being reluctant to do so,” Dr. Valgimigli said. The data show “prolongation of SAPT increases bleeding risk without decreasing ischemic risk.”

In evaluating trial relevance, regulators prefer ITT analyses, but Dr. Baber pointed out that these can obscure the evidence of risk or benefit of a per-protocol analysis when patients take their medicine as prescribed.

“The technical message is that, when we are trying to apply results of a clinical trial to daily practice, we must understand nonadherence,” Dr. Baber said.

Dr. Baber pointed out that the lack of adherence in the case of MASTER DAPT appears to relate more to clinicians managing the patients than to the patients themselves, but it still speaks to the importance of understanding the effects of treatment in the context of the medicine rather than adherence to the medicine.

ISCHEMIA: Reconsidering adherence

In the ISCHEMIA trial, the goal was to evaluate whether an early invasive intervention might compensate to at least some degree for the persistent problem of nonadherence.

“If you are managing a patient that you know is at high risk of noncompliance, many clinicians are tempted to perform early revascularization. This was my bias. The thinking is that by offering an invasive therapy we are at least doing something to control their disease,” John A. Spertus, MD, clinical director of outcomes research, St. Luke’s Mid America Heart Institute, Kansas City, Mo., explained in an interview.

The study did not support the hypothesis. Patients with chronic coronary disease were randomized to a strategy of angiography and, if indicated, revascularization, or to receive GDMT alone. The health status was followed with the Seattle Angina Questionnaire (SAQ-7).

At 12 months, patients who were adherent to GDMT had better SAQ-7 scores than those who were nonadherent, regardless of the arm to which they were randomized. Conversely, there was no difference in SAQ-7 scores between the two groups when the nonadherent subgroups in each arm were compared.

“I think these data suggest that an interventional therapy does not absolve clinicians from the responsibility of educating patients about the importance of adhering to GDMT,” Dr. Spertus said.

In ISCHEMIA, 4,480 patients were randomized. At baseline assessment 27.8% were nonadherent to GDMT. The baselines SAQ-7 scores were worse in these patients relative to those who were adherent. At 12 months, nonadherence still correlated with worse SAQ-7 scores.

“These data dispel the belief that we might be benefiting nonadherent patients by moving more quickly to invasive procedures,” Dr. Spertus said.

In cardiovascular disease, particularly heart failure, adherence to GDMT has been associated numerous times with improved quality of life, according to Dr. Baber. However, he said, the ability of invasive procedures to modify the adverse impact of poor adherence to GDMT has not been well studied. This ISCHEMIA subanalysis only reinforces the message that GDMT adherence is a meaningful predictor of improved quality of life.

However, urging clinicians to work with patients to improve adherence is not a novel idea, according to Dr. Baber. The unmet need is effective and reliable strategies.

“There are so many different reasons that patients are nonadherent, so there are limited gains by focusing on just one of the issues,” Dr. Baber said. “I think the answer is a patient-centric approach in which clinicians deal with the specific issues facing the patient in front of them. I think there are data go suggest this yields better results.”

These two very different studies also show that poor adherence is an insidious issue. While the MASTER DAPT data reveal how nonadherence confuse trial data, the ISCHEMIA trial shows that some assumptions about circumventing the effects of nonadherence might not be accurate.

According to Dr. Baber, effective strategies to reduce nonadherence are available, but the problem deserves to be addressed more proactively in clinical trials and in patient care.

Dr. Baber reported financial relationships with AstraZeneca and Amgen. Dr. Spertus has financial relationships with Abbott, Bayer, Bristol-Myers Squibb, Corvia, Janssen, Merck, Novartis, Pfizer and Terumo. Dr. Valgimigli has financial relationships with more than 15 pharmaceutical companies, including Terumo, which provided funding for the MASTER DAPT trial.
 

Two very different sets of clinical evidence have offered new twists on how nonadherence to cardiovascular medicines not only leads to suboptimal outcomes, but also complicates the data from clinical studies.

One study, a subanalysis of a major trial, outlined how taking more than the assigned therapy – that is, nonadherence by taking too much rather than too little – skewed results. The other was a trial demonstrating that early use of an invasive procedure is not a strategy to compensate for nonadherence to guideline-directed medical therapy (GDMT).

Bruce Jancin/Frontline Medical News

“Both studies provide a fresh reminder that nonadherence is a significant problem in cardiology overall, but also in the trial setting when we are trying to interpret study results,” explained Usam Baber, MD, director of interventional cardiology, University of Oklahoma Health, Oklahoma City, coauthor of an editorial accompanying the two published studies.

Dr. Baber was the first author of a unifying editorial that addressed the issues raised by each. In an interview, Dr. Baber said the studies had unique take-home messages but together highlight important issues of nonadherence.
 

MASTER DAPT: Too much medicine

The subanalysis was performed on data generated by MASTER DAPT, a study evaluating whether a relatively short course of dual-antiplatelet therapy (DAPT) in patients at high risk of bleeding could preserve protection against major adverse cardiovascular events (MACE) while reducing risk of adverse events. The problem was that nonadherence muddied the primary message.

In MASTER DAPT, 1 month of DAPT was compared with a standard therapy of at least 2 additional months of DAPT following revascularization and placement of a biodegradable polymer stent. Enrollment in the study was restricted to those with a high risk of bleeding, the report of the primary results showed.

The major message of MASTER DAPT was that the abbreviated course of DAPT was noninferior for preventing MACE but resulted in lower rates of clinically relevant bleeding in those patients without an indication for oral anticoagulation (OAC). In the subgroup with an indication for OAC, there was no bleeding benefit.

However, when the results were reexamined in the context of adherence, the benefit of the shorter course was found to be underestimated. Relative to 9.4% in the standard-therapy arm, the nonadherence rate in the experimental arm was 20.2%, most of whom did not stop therapy at 1 month. They instead remained on the antiplatelet therapy, failing to adhere to the study protocol.

This form of nonadherence, taking more DAPT than assigned, was particularly common in the group with an indication for oral anticoagulation (OAC). In this group, nearly 25% assigned to an abbreviated course remained on DAPT for more than 6 months.

In the intention-to-treat analysis, there was no difference between abbreviated and standard DAPT for MACE whether or not patients had an indication for OAC. In other words, the new analysis showed a reduced risk of bleeding among all patients, whether taking OAC or not after controlling for nonadherence.

In addition, this MASTER DAPT analysis found that a high proportion of patients taking OAC did not discontinue their single-antiplatelet therapy (SAPT) after 6 months as specified.

When correcting for this failure to adhere to the MASTER DAPT protocol in a patient population at high bleeding risk, the new analysis “suggests for the first time that discontinuation of SAPT at 6 months after percutaneous intervention is associated with less bleeding without an increase in ischemic events,” Marco Valgimigli, MD, PhD, director of clinical research, Inselspital University Hospital, Bern, Switzerland, reported in the Journal of the American College of Cardiology.

The findings “reinforce the importance of accounting and correcting for nonadherence” in order to reduce bias in the assessment of treatment effects, according to Dr. Valgimigli, principal investigator of MASTER DAPT and this substudy.

“The first interesting message from this study is that clinicians are reluctant to stop SAPT in these patients even in the setting of a randomized controlled trial,” Dr. Valgimigli said in an interview.

In addition, this substudy, which was prespecified in the MASTER DAPT protocol and employed “a very sophisticated methodology” to control for the effect of adherence, extends the value of a conservative approach to those who are candidates for OAC.

“The main clinical message is that SAPT needs to be discontinued after 6 months in OAC patients, and clinicians need to stop being reluctant to do so,” Dr. Valgimigli said. The data show “prolongation of SAPT increases bleeding risk without decreasing ischemic risk.”

In evaluating trial relevance, regulators prefer ITT analyses, but Dr. Baber pointed out that these can obscure the evidence of risk or benefit of a per-protocol analysis when patients take their medicine as prescribed.

“The technical message is that, when we are trying to apply results of a clinical trial to daily practice, we must understand nonadherence,” Dr. Baber said.

Dr. Baber pointed out that the lack of adherence in the case of MASTER DAPT appears to relate more to clinicians managing the patients than to the patients themselves, but it still speaks to the importance of understanding the effects of treatment in the context of the medicine rather than adherence to the medicine.

ISCHEMIA: Reconsidering adherence

In the ISCHEMIA trial, the goal was to evaluate whether an early invasive intervention might compensate to at least some degree for the persistent problem of nonadherence.

“If you are managing a patient that you know is at high risk of noncompliance, many clinicians are tempted to perform early revascularization. This was my bias. The thinking is that by offering an invasive therapy we are at least doing something to control their disease,” John A. Spertus, MD, clinical director of outcomes research, St. Luke’s Mid America Heart Institute, Kansas City, Mo., explained in an interview.

The study did not support the hypothesis. Patients with chronic coronary disease were randomized to a strategy of angiography and, if indicated, revascularization, or to receive GDMT alone. The health status was followed with the Seattle Angina Questionnaire (SAQ-7).

At 12 months, patients who were adherent to GDMT had better SAQ-7 scores than those who were nonadherent, regardless of the arm to which they were randomized. Conversely, there was no difference in SAQ-7 scores between the two groups when the nonadherent subgroups in each arm were compared.

“I think these data suggest that an interventional therapy does not absolve clinicians from the responsibility of educating patients about the importance of adhering to GDMT,” Dr. Spertus said.

In ISCHEMIA, 4,480 patients were randomized. At baseline assessment 27.8% were nonadherent to GDMT. The baselines SAQ-7 scores were worse in these patients relative to those who were adherent. At 12 months, nonadherence still correlated with worse SAQ-7 scores.

“These data dispel the belief that we might be benefiting nonadherent patients by moving more quickly to invasive procedures,” Dr. Spertus said.

In cardiovascular disease, particularly heart failure, adherence to GDMT has been associated numerous times with improved quality of life, according to Dr. Baber. However, he said, the ability of invasive procedures to modify the adverse impact of poor adherence to GDMT has not been well studied. This ISCHEMIA subanalysis only reinforces the message that GDMT adherence is a meaningful predictor of improved quality of life.

However, urging clinicians to work with patients to improve adherence is not a novel idea, according to Dr. Baber. The unmet need is effective and reliable strategies.

“There are so many different reasons that patients are nonadherent, so there are limited gains by focusing on just one of the issues,” Dr. Baber said. “I think the answer is a patient-centric approach in which clinicians deal with the specific issues facing the patient in front of them. I think there are data go suggest this yields better results.”

These two very different studies also show that poor adherence is an insidious issue. While the MASTER DAPT data reveal how nonadherence confuse trial data, the ISCHEMIA trial shows that some assumptions about circumventing the effects of nonadherence might not be accurate.

According to Dr. Baber, effective strategies to reduce nonadherence are available, but the problem deserves to be addressed more proactively in clinical trials and in patient care.

Dr. Baber reported financial relationships with AstraZeneca and Amgen. Dr. Spertus has financial relationships with Abbott, Bayer, Bristol-Myers Squibb, Corvia, Janssen, Merck, Novartis, Pfizer and Terumo. Dr. Valgimigli has financial relationships with more than 15 pharmaceutical companies, including Terumo, which provided funding for the MASTER DAPT trial.
 

Two very different sets of clinical evidence have offered new twists on how nonadherence to cardiovascular medicines not only leads to suboptimal outcomes, but also complicates the data from clinical studies.

One study, a subanalysis of a major trial, outlined how taking more than the assigned therapy – that is, nonadherence by taking too much rather than too little – skewed results. The other was a trial demonstrating that early use of an invasive procedure is not a strategy to compensate for nonadherence to guideline-directed medical therapy (GDMT).

Bruce Jancin/Frontline Medical News

“Both studies provide a fresh reminder that nonadherence is a significant problem in cardiology overall, but also in the trial setting when we are trying to interpret study results,” explained Usam Baber, MD, director of interventional cardiology, University of Oklahoma Health, Oklahoma City, coauthor of an editorial accompanying the two published studies.

Dr. Baber was the first author of a unifying editorial that addressed the issues raised by each. In an interview, Dr. Baber said the studies had unique take-home messages but together highlight important issues of nonadherence.
 

MASTER DAPT: Too much medicine

The subanalysis was performed on data generated by MASTER DAPT, a study evaluating whether a relatively short course of dual-antiplatelet therapy (DAPT) in patients at high risk of bleeding could preserve protection against major adverse cardiovascular events (MACE) while reducing risk of adverse events. The problem was that nonadherence muddied the primary message.

In MASTER DAPT, 1 month of DAPT was compared with a standard therapy of at least 2 additional months of DAPT following revascularization and placement of a biodegradable polymer stent. Enrollment in the study was restricted to those with a high risk of bleeding, the report of the primary results showed.

The major message of MASTER DAPT was that the abbreviated course of DAPT was noninferior for preventing MACE but resulted in lower rates of clinically relevant bleeding in those patients without an indication for oral anticoagulation (OAC). In the subgroup with an indication for OAC, there was no bleeding benefit.

However, when the results were reexamined in the context of adherence, the benefit of the shorter course was found to be underestimated. Relative to 9.4% in the standard-therapy arm, the nonadherence rate in the experimental arm was 20.2%, most of whom did not stop therapy at 1 month. They instead remained on the antiplatelet therapy, failing to adhere to the study protocol.

This form of nonadherence, taking more DAPT than assigned, was particularly common in the group with an indication for oral anticoagulation (OAC). In this group, nearly 25% assigned to an abbreviated course remained on DAPT for more than 6 months.

In the intention-to-treat analysis, there was no difference between abbreviated and standard DAPT for MACE whether or not patients had an indication for OAC. In other words, the new analysis showed a reduced risk of bleeding among all patients, whether taking OAC or not after controlling for nonadherence.

In addition, this MASTER DAPT analysis found that a high proportion of patients taking OAC did not discontinue their single-antiplatelet therapy (SAPT) after 6 months as specified.

When correcting for this failure to adhere to the MASTER DAPT protocol in a patient population at high bleeding risk, the new analysis “suggests for the first time that discontinuation of SAPT at 6 months after percutaneous intervention is associated with less bleeding without an increase in ischemic events,” Marco Valgimigli, MD, PhD, director of clinical research, Inselspital University Hospital, Bern, Switzerland, reported in the Journal of the American College of Cardiology.

The findings “reinforce the importance of accounting and correcting for nonadherence” in order to reduce bias in the assessment of treatment effects, according to Dr. Valgimigli, principal investigator of MASTER DAPT and this substudy.

“The first interesting message from this study is that clinicians are reluctant to stop SAPT in these patients even in the setting of a randomized controlled trial,” Dr. Valgimigli said in an interview.

In addition, this substudy, which was prespecified in the MASTER DAPT protocol and employed “a very sophisticated methodology” to control for the effect of adherence, extends the value of a conservative approach to those who are candidates for OAC.

“The main clinical message is that SAPT needs to be discontinued after 6 months in OAC patients, and clinicians need to stop being reluctant to do so,” Dr. Valgimigli said. The data show “prolongation of SAPT increases bleeding risk without decreasing ischemic risk.”

In evaluating trial relevance, regulators prefer ITT analyses, but Dr. Baber pointed out that these can obscure the evidence of risk or benefit of a per-protocol analysis when patients take their medicine as prescribed.

“The technical message is that, when we are trying to apply results of a clinical trial to daily practice, we must understand nonadherence,” Dr. Baber said.

Dr. Baber pointed out that the lack of adherence in the case of MASTER DAPT appears to relate more to clinicians managing the patients than to the patients themselves, but it still speaks to the importance of understanding the effects of treatment in the context of the medicine rather than adherence to the medicine.

ISCHEMIA: Reconsidering adherence

In the ISCHEMIA trial, the goal was to evaluate whether an early invasive intervention might compensate to at least some degree for the persistent problem of nonadherence.

“If you are managing a patient that you know is at high risk of noncompliance, many clinicians are tempted to perform early revascularization. This was my bias. The thinking is that by offering an invasive therapy we are at least doing something to control their disease,” John A. Spertus, MD, clinical director of outcomes research, St. Luke’s Mid America Heart Institute, Kansas City, Mo., explained in an interview.

The study did not support the hypothesis. Patients with chronic coronary disease were randomized to a strategy of angiography and, if indicated, revascularization, or to receive GDMT alone. The health status was followed with the Seattle Angina Questionnaire (SAQ-7).

At 12 months, patients who were adherent to GDMT had better SAQ-7 scores than those who were nonadherent, regardless of the arm to which they were randomized. Conversely, there was no difference in SAQ-7 scores between the two groups when the nonadherent subgroups in each arm were compared.

“I think these data suggest that an interventional therapy does not absolve clinicians from the responsibility of educating patients about the importance of adhering to GDMT,” Dr. Spertus said.

In ISCHEMIA, 4,480 patients were randomized. At baseline assessment 27.8% were nonadherent to GDMT. The baselines SAQ-7 scores were worse in these patients relative to those who were adherent. At 12 months, nonadherence still correlated with worse SAQ-7 scores.

“These data dispel the belief that we might be benefiting nonadherent patients by moving more quickly to invasive procedures,” Dr. Spertus said.

In cardiovascular disease, particularly heart failure, adherence to GDMT has been associated numerous times with improved quality of life, according to Dr. Baber. However, he said, the ability of invasive procedures to modify the adverse impact of poor adherence to GDMT has not been well studied. This ISCHEMIA subanalysis only reinforces the message that GDMT adherence is a meaningful predictor of improved quality of life.

However, urging clinicians to work with patients to improve adherence is not a novel idea, according to Dr. Baber. The unmet need is effective and reliable strategies.

“There are so many different reasons that patients are nonadherent, so there are limited gains by focusing on just one of the issues,” Dr. Baber said. “I think the answer is a patient-centric approach in which clinicians deal with the specific issues facing the patient in front of them. I think there are data go suggest this yields better results.”

These two very different studies also show that poor adherence is an insidious issue. While the MASTER DAPT data reveal how nonadherence confuse trial data, the ISCHEMIA trial shows that some assumptions about circumventing the effects of nonadherence might not be accurate.

According to Dr. Baber, effective strategies to reduce nonadherence are available, but the problem deserves to be addressed more proactively in clinical trials and in patient care.

Dr. Baber reported financial relationships with AstraZeneca and Amgen. Dr. Spertus has financial relationships with Abbott, Bayer, Bristol-Myers Squibb, Corvia, Janssen, Merck, Novartis, Pfizer and Terumo. Dr. Valgimigli has financial relationships with more than 15 pharmaceutical companies, including Terumo, which provided funding for the MASTER DAPT trial.
 

Polio virus has been discovered in New York City’s sewers, suggesting that the virus is circulating in the city, New York’s health authorities said Aug. 12.

The detection of polio in NYC is alarming but not surprising, said New York State Health Commissioner Mary Bassett, MD, MPH.

“For every one case of paralytic polio identified, hundreds more may be undetected,” Dr. Bassett said. “The best way to keep adults and children polio-free is through safe and effective immunization.”

Polio can cause permanent paralysis of limbs and even death in some cases. Before this outbreak, the last case of polio in the United States was in 2013.

The announcement came after a man in Rockland County, New York, north of the city, was stricken with polio at the end of July and paralyzed.

Now, health officials fear that the detection of polio in NYC wastewater could bring other cases of paralytic polio.

“It is not surprising, since this is something already seen with Rockland County,” Amesh Adalja, MD, senior scholar at the Johns Hopkins Center for Health Security in Baltimore, told this news organization. “This is solely the result of under-vaccination in the area. I think it’s likely that we will see a few paralytic cases but not a high number.”
 

Vaccinations declined in pandemic

Among the worries is that vaccination rates across New York City dipped during the pandemic because pediatrician visits were postponed.

In New York City, the overall rate of polio vaccination among children aged 5 years or younger is 86%. Still, in some city ZIP codes, fewer than two-thirds of children in that age group have received the full dosage, which worries health officials.

However, most adults were vaccinated against polio as children.

Across New York state, nearly 80% of people have been vaccinated, according to data from the state public health department. Those who are unvaccinated are at risk, but the polio vaccine is nearly 100% effective in people who are fully immunized.

New York health authorities are calling on those who are unvaccinated to get their shots immediately.

“The risk to New Yorkers is real, but the defense is so simple – get vaccinated against polio,” New York City Health Commissioner Ashwin Vasan, MD, PhD, said in a statement. “Polio is entirely preventable, and its reappearance should be a call for all of us.”

Though many of those who are infected have no symptoms, about 4% will get viral meningitis “and about 1 in 200 will become paralyzed,” according to a news release.
 

Symptoms can be flu-like

Symptoms can include those similar to the flu, such as sore throat, fever, fatigue, nausea, and stomach ache. There is no cure for the disease. 

The city’s health department has given no details about where exactly polio had been found in NYC’s wastewater nor did they give dates the virus was detected.

Health authorities urged parents of children who are not yet fully vaccinated to bring them to their pediatricians.

In 1916, polio killed 6,000 people in the United States and left at least another 21,000 – most of them children – permanently disabled.

An outbreak in 1952 caused paralysis in more than 20,000 people and left many children on iron lungs. The first effective vaccine emerged just a few years later and the virus began to wane.

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

Polio virus has been discovered in New York City’s sewers, suggesting that the virus is circulating in the city, New York’s health authorities said Aug. 12.

The detection of polio in NYC is alarming but not surprising, said New York State Health Commissioner Mary Bassett, MD, MPH.

“For every one case of paralytic polio identified, hundreds more may be undetected,” Dr. Bassett said. “The best way to keep adults and children polio-free is through safe and effective immunization.”

Polio can cause permanent paralysis of limbs and even death in some cases. Before this outbreak, the last case of polio in the United States was in 2013.

The announcement came after a man in Rockland County, New York, north of the city, was stricken with polio at the end of July and paralyzed.

Now, health officials fear that the detection of polio in NYC wastewater could bring other cases of paralytic polio.

“It is not surprising, since this is something already seen with Rockland County,” Amesh Adalja, MD, senior scholar at the Johns Hopkins Center for Health Security in Baltimore, told this news organization. “This is solely the result of under-vaccination in the area. I think it’s likely that we will see a few paralytic cases but not a high number.”
 

Vaccinations declined in pandemic

Among the worries is that vaccination rates across New York City dipped during the pandemic because pediatrician visits were postponed.

In New York City, the overall rate of polio vaccination among children aged 5 years or younger is 86%. Still, in some city ZIP codes, fewer than two-thirds of children in that age group have received the full dosage, which worries health officials.

However, most adults were vaccinated against polio as children.

Across New York state, nearly 80% of people have been vaccinated, according to data from the state public health department. Those who are unvaccinated are at risk, but the polio vaccine is nearly 100% effective in people who are fully immunized.

New York health authorities are calling on those who are unvaccinated to get their shots immediately.

“The risk to New Yorkers is real, but the defense is so simple – get vaccinated against polio,” New York City Health Commissioner Ashwin Vasan, MD, PhD, said in a statement. “Polio is entirely preventable, and its reappearance should be a call for all of us.”

Though many of those who are infected have no symptoms, about 4% will get viral meningitis “and about 1 in 200 will become paralyzed,” according to a news release.
 

Symptoms can be flu-like

Symptoms can include those similar to the flu, such as sore throat, fever, fatigue, nausea, and stomach ache. There is no cure for the disease. 

The city’s health department has given no details about where exactly polio had been found in NYC’s wastewater nor did they give dates the virus was detected.

Health authorities urged parents of children who are not yet fully vaccinated to bring them to their pediatricians.

In 1916, polio killed 6,000 people in the United States and left at least another 21,000 – most of them children – permanently disabled.

An outbreak in 1952 caused paralysis in more than 20,000 people and left many children on iron lungs. The first effective vaccine emerged just a few years later and the virus began to wane.

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

Polio virus has been discovered in New York City’s sewers, suggesting that the virus is circulating in the city, New York’s health authorities said Aug. 12.

The detection of polio in NYC is alarming but not surprising, said New York State Health Commissioner Mary Bassett, MD, MPH.

“For every one case of paralytic polio identified, hundreds more may be undetected,” Dr. Bassett said. “The best way to keep adults and children polio-free is through safe and effective immunization.”

Polio can cause permanent paralysis of limbs and even death in some cases. Before this outbreak, the last case of polio in the United States was in 2013.

The announcement came after a man in Rockland County, New York, north of the city, was stricken with polio at the end of July and paralyzed.

Now, health officials fear that the detection of polio in NYC wastewater could bring other cases of paralytic polio.

“It is not surprising, since this is something already seen with Rockland County,” Amesh Adalja, MD, senior scholar at the Johns Hopkins Center for Health Security in Baltimore, told this news organization. “This is solely the result of under-vaccination in the area. I think it’s likely that we will see a few paralytic cases but not a high number.”
 

Vaccinations declined in pandemic

Among the worries is that vaccination rates across New York City dipped during the pandemic because pediatrician visits were postponed.

In New York City, the overall rate of polio vaccination among children aged 5 years or younger is 86%. Still, in some city ZIP codes, fewer than two-thirds of children in that age group have received the full dosage, which worries health officials.

However, most adults were vaccinated against polio as children.

Across New York state, nearly 80% of people have been vaccinated, according to data from the state public health department. Those who are unvaccinated are at risk, but the polio vaccine is nearly 100% effective in people who are fully immunized.

New York health authorities are calling on those who are unvaccinated to get their shots immediately.

“The risk to New Yorkers is real, but the defense is so simple – get vaccinated against polio,” New York City Health Commissioner Ashwin Vasan, MD, PhD, said in a statement. “Polio is entirely preventable, and its reappearance should be a call for all of us.”

Though many of those who are infected have no symptoms, about 4% will get viral meningitis “and about 1 in 200 will become paralyzed,” according to a news release.
 

Symptoms can be flu-like

Symptoms can include those similar to the flu, such as sore throat, fever, fatigue, nausea, and stomach ache. There is no cure for the disease. 

The city’s health department has given no details about where exactly polio had been found in NYC’s wastewater nor did they give dates the virus was detected.

Health authorities urged parents of children who are not yet fully vaccinated to bring them to their pediatricians.

In 1916, polio killed 6,000 people in the United States and left at least another 21,000 – most of them children – permanently disabled.

An outbreak in 1952 caused paralysis in more than 20,000 people and left many children on iron lungs. The first effective vaccine emerged just a few years later and the virus began to wane.

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

The connection between red meat and atherosclerotic cardiovascular disease has been well established, but newly reported findings indicate that metabolites in the gut microbiome may explain that relationship more than cholesterol and blood pressure.

“Eating more meat, especially red meat and processed meats, is associated with a higher risk of cardiovascular disease, even later in life,” co–lead study author Meng Wang, PhD, said in an interview.

The study, from a large community-based cohort of older people, included 3,931 U.S. participants aged 65 and older in the Cardiovascular Health Study (CHS). It found that gut microbiota–generated metabolites of dietary L-carnitine, including trimethylamine N-oxide (TMAO), have a role in the association between unprocessed red meat intake and incident ASCVD.

“TMAO-related metabolites produced by our gut microbes as well as blood-glucose and insulin homeostasis and systematic inflammation appeared to explain much of the association, more so than blood cholesterol or blood pressure,” added Dr. Wang, of the Friedman School of Nutrition Science and Policy at Tufts University, Boston.

Dr. Wang said this study was unique because it focused specifically on older adults; the average participant age was 72.9 years. “Older adults are at the highest risk of CVD, and for them adequate intake of protein may help to offset aging-related loss of muscle mass and strength,” she said. However, the study population was largely white (88%), so, she said, the results may not be generalizable to populations that are younger or of different nationalities and races.

The researchers performed a multivariable analysis that showed that participants who had higher intakes of unprocessed red meat, total meat, and total animal source foods (ASF) had higher hazard ratios of ASCVD risk. The study had a median follow-up of 12.5 years. It divided the study population into five quintiles based on how much unprocessed red met they consumed at baseline and analyzed dietary exposure in the differences between the midpoints of the first and fifth quintiles.

Earlier studies of meat intake and CVD risk focused mostly on saturated fat and blood cholesterol, Dr. Wang added. “But our findings suggest that other components in red meat, such as L-carnitine and heme iron, might play a more important role than saturated fat,” she said.

camij/thinkstockphotos.com

Higher intake of unprocessed red meat was linked to a 15% higher incidence of ASCVD per interquintile range (hazard ratio, 1.15; 95% confidence interval, 1.01-1.30; P = .031). Total meat intake, defined as unprocessed plus processed red meat, was tied to a 22% higher incidence of ASCVD (HR, 1.22; CI, 1.07-1.39; P = .004).

The study found no significant association between fish, poultry, or egg intake and incident ASCVD, but found total ASF intake had an 18% higher risk (HR, 1.18; CI, 1.03–1.34; P = .016).
 

Explaining the red meat–CVD connection

“The more novel part of our study is about the mediation analysis,” Dr. Wang said. “It helps explain why meat intake was associated with a higher risk of CVD. We identified several biological pathways, including the novel one through TMAO-related metabolites produced by the gut microbiome.”

Three gut microbiota–generated metabolites of L-carnitine – TMAO, gamma-butyrobetaine, and crotonobetaine – seem to partly explain the association between unprocessed red meat intake and incident ASCVD, the study reported.

The study found 3.92 excess ASCVD events per 1,000 person years associated with each interquintile range of higher unprocessed red meat intake; 10.6% of them were attributed to plasma levels of the three L-carnitine metabolites (95% CI, 1.0-114.5).

In this study, neither blood cholesterol nor blood pressure levels seemed to explain the elevated risk of ASCVD associated with meat intake, but blood glucose and insulin did, with mediation proportions of 26.1% and 11.8%, respectively.

Study strengths are its size and its general population cohort with well-measured CVD risk factors, Dr. Wang pointed out. All participants were free of clinically diagnosed CVD at enrollment, which minimized selection bias and reverse causation, she said. However, she acknowledged that the use of self-reported diet intake data, along with the largely white population, constitute limitations.

“Our study findings need to be confirmed in different populations and more research efforts are needed to better understand the health effects of some of the components in red meat, such as L-carnitine and heme iron,” Dr. Wang said.

“This study is interesting in that it doesn’t just ask the question, ‘Is eating red meat associated with coronary disease and atherosclerotic disease?’ but it tells what the mechanism is,” Robert Vogel, MD, professor at University of Colorado at Denver, Aurora, said in an interview.

The association between red meat and ASCVD is “an established science,” he said. “Where this study adds to the literature is that it suggests that elevated LDL cholesterol or blood pressure, things – especially the former – that are thought to be associated with coronary disease, may or may not be the mechanism.” He cautioned, however, “this is all associative data.”

The study “produces incremental knowledge for the association between eating red met and atherosclerosis, but it does not establish causality,” Dr. Vogel added.

Dr. Wang has no relevant disclosures. Dr. Vogel is a consultant to the Pritikin Longevity Center in Miami.

The connection between red meat and atherosclerotic cardiovascular disease has been well established, but newly reported findings indicate that metabolites in the gut microbiome may explain that relationship more than cholesterol and blood pressure.

“Eating more meat, especially red meat and processed meats, is associated with a higher risk of cardiovascular disease, even later in life,” co–lead study author Meng Wang, PhD, said in an interview.

The study, from a large community-based cohort of older people, included 3,931 U.S. participants aged 65 and older in the Cardiovascular Health Study (CHS). It found that gut microbiota–generated metabolites of dietary L-carnitine, including trimethylamine N-oxide (TMAO), have a role in the association between unprocessed red meat intake and incident ASCVD.

“TMAO-related metabolites produced by our gut microbes as well as blood-glucose and insulin homeostasis and systematic inflammation appeared to explain much of the association, more so than blood cholesterol or blood pressure,” added Dr. Wang, of the Friedman School of Nutrition Science and Policy at Tufts University, Boston.

Dr. Wang said this study was unique because it focused specifically on older adults; the average participant age was 72.9 years. “Older adults are at the highest risk of CVD, and for them adequate intake of protein may help to offset aging-related loss of muscle mass and strength,” she said. However, the study population was largely white (88%), so, she said, the results may not be generalizable to populations that are younger or of different nationalities and races.

The researchers performed a multivariable analysis that showed that participants who had higher intakes of unprocessed red meat, total meat, and total animal source foods (ASF) had higher hazard ratios of ASCVD risk. The study had a median follow-up of 12.5 years. It divided the study population into five quintiles based on how much unprocessed red met they consumed at baseline and analyzed dietary exposure in the differences between the midpoints of the first and fifth quintiles.

Earlier studies of meat intake and CVD risk focused mostly on saturated fat and blood cholesterol, Dr. Wang added. “But our findings suggest that other components in red meat, such as L-carnitine and heme iron, might play a more important role than saturated fat,” she said.

camij/thinkstockphotos.com

Higher intake of unprocessed red meat was linked to a 15% higher incidence of ASCVD per interquintile range (hazard ratio, 1.15; 95% confidence interval, 1.01-1.30; P = .031). Total meat intake, defined as unprocessed plus processed red meat, was tied to a 22% higher incidence of ASCVD (HR, 1.22; CI, 1.07-1.39; P = .004).

The study found no significant association between fish, poultry, or egg intake and incident ASCVD, but found total ASF intake had an 18% higher risk (HR, 1.18; CI, 1.03–1.34; P = .016).
 

Explaining the red meat–CVD connection

“The more novel part of our study is about the mediation analysis,” Dr. Wang said. “It helps explain why meat intake was associated with a higher risk of CVD. We identified several biological pathways, including the novel one through TMAO-related metabolites produced by the gut microbiome.”

Three gut microbiota–generated metabolites of L-carnitine – TMAO, gamma-butyrobetaine, and crotonobetaine – seem to partly explain the association between unprocessed red meat intake and incident ASCVD, the study reported.

The study found 3.92 excess ASCVD events per 1,000 person years associated with each interquintile range of higher unprocessed red meat intake; 10.6% of them were attributed to plasma levels of the three L-carnitine metabolites (95% CI, 1.0-114.5).

In this study, neither blood cholesterol nor blood pressure levels seemed to explain the elevated risk of ASCVD associated with meat intake, but blood glucose and insulin did, with mediation proportions of 26.1% and 11.8%, respectively.

Study strengths are its size and its general population cohort with well-measured CVD risk factors, Dr. Wang pointed out. All participants were free of clinically diagnosed CVD at enrollment, which minimized selection bias and reverse causation, she said. However, she acknowledged that the use of self-reported diet intake data, along with the largely white population, constitute limitations.

“Our study findings need to be confirmed in different populations and more research efforts are needed to better understand the health effects of some of the components in red meat, such as L-carnitine and heme iron,” Dr. Wang said.

“This study is interesting in that it doesn’t just ask the question, ‘Is eating red meat associated with coronary disease and atherosclerotic disease?’ but it tells what the mechanism is,” Robert Vogel, MD, professor at University of Colorado at Denver, Aurora, said in an interview.

The association between red meat and ASCVD is “an established science,” he said. “Where this study adds to the literature is that it suggests that elevated LDL cholesterol or blood pressure, things – especially the former – that are thought to be associated with coronary disease, may or may not be the mechanism.” He cautioned, however, “this is all associative data.”

The study “produces incremental knowledge for the association between eating red met and atherosclerosis, but it does not establish causality,” Dr. Vogel added.

Dr. Wang has no relevant disclosures. Dr. Vogel is a consultant to the Pritikin Longevity Center in Miami.

The connection between red meat and atherosclerotic cardiovascular disease has been well established, but newly reported findings indicate that metabolites in the gut microbiome may explain that relationship more than cholesterol and blood pressure.

“Eating more meat, especially red meat and processed meats, is associated with a higher risk of cardiovascular disease, even later in life,” co–lead study author Meng Wang, PhD, said in an interview.

The study, from a large community-based cohort of older people, included 3,931 U.S. participants aged 65 and older in the Cardiovascular Health Study (CHS). It found that gut microbiota–generated metabolites of dietary L-carnitine, including trimethylamine N-oxide (TMAO), have a role in the association between unprocessed red meat intake and incident ASCVD.

“TMAO-related metabolites produced by our gut microbes as well as blood-glucose and insulin homeostasis and systematic inflammation appeared to explain much of the association, more so than blood cholesterol or blood pressure,” added Dr. Wang, of the Friedman School of Nutrition Science and Policy at Tufts University, Boston.

Dr. Wang said this study was unique because it focused specifically on older adults; the average participant age was 72.9 years. “Older adults are at the highest risk of CVD, and for them adequate intake of protein may help to offset aging-related loss of muscle mass and strength,” she said. However, the study population was largely white (88%), so, she said, the results may not be generalizable to populations that are younger or of different nationalities and races.

The researchers performed a multivariable analysis that showed that participants who had higher intakes of unprocessed red meat, total meat, and total animal source foods (ASF) had higher hazard ratios of ASCVD risk. The study had a median follow-up of 12.5 years. It divided the study population into five quintiles based on how much unprocessed red met they consumed at baseline and analyzed dietary exposure in the differences between the midpoints of the first and fifth quintiles.

Earlier studies of meat intake and CVD risk focused mostly on saturated fat and blood cholesterol, Dr. Wang added. “But our findings suggest that other components in red meat, such as L-carnitine and heme iron, might play a more important role than saturated fat,” she said.

camij/thinkstockphotos.com

Higher intake of unprocessed red meat was linked to a 15% higher incidence of ASCVD per interquintile range (hazard ratio, 1.15; 95% confidence interval, 1.01-1.30; P = .031). Total meat intake, defined as unprocessed plus processed red meat, was tied to a 22% higher incidence of ASCVD (HR, 1.22; CI, 1.07-1.39; P = .004).

The study found no significant association between fish, poultry, or egg intake and incident ASCVD, but found total ASF intake had an 18% higher risk (HR, 1.18; CI, 1.03–1.34; P = .016).
 

Explaining the red meat–CVD connection

“The more novel part of our study is about the mediation analysis,” Dr. Wang said. “It helps explain why meat intake was associated with a higher risk of CVD. We identified several biological pathways, including the novel one through TMAO-related metabolites produced by the gut microbiome.”

Three gut microbiota–generated metabolites of L-carnitine – TMAO, gamma-butyrobetaine, and crotonobetaine – seem to partly explain the association between unprocessed red meat intake and incident ASCVD, the study reported.

The study found 3.92 excess ASCVD events per 1,000 person years associated with each interquintile range of higher unprocessed red meat intake; 10.6% of them were attributed to plasma levels of the three L-carnitine metabolites (95% CI, 1.0-114.5).

In this study, neither blood cholesterol nor blood pressure levels seemed to explain the elevated risk of ASCVD associated with meat intake, but blood glucose and insulin did, with mediation proportions of 26.1% and 11.8%, respectively.

Study strengths are its size and its general population cohort with well-measured CVD risk factors, Dr. Wang pointed out. All participants were free of clinically diagnosed CVD at enrollment, which minimized selection bias and reverse causation, she said. However, she acknowledged that the use of self-reported diet intake data, along with the largely white population, constitute limitations.

“Our study findings need to be confirmed in different populations and more research efforts are needed to better understand the health effects of some of the components in red meat, such as L-carnitine and heme iron,” Dr. Wang said.

“This study is interesting in that it doesn’t just ask the question, ‘Is eating red meat associated with coronary disease and atherosclerotic disease?’ but it tells what the mechanism is,” Robert Vogel, MD, professor at University of Colorado at Denver, Aurora, said in an interview.

The association between red meat and ASCVD is “an established science,” he said. “Where this study adds to the literature is that it suggests that elevated LDL cholesterol or blood pressure, things – especially the former – that are thought to be associated with coronary disease, may or may not be the mechanism.” He cautioned, however, “this is all associative data.”

The study “produces incremental knowledge for the association between eating red met and atherosclerosis, but it does not establish causality,” Dr. Vogel added.

Dr. Wang has no relevant disclosures. Dr. Vogel is a consultant to the Pritikin Longevity Center in Miami.