Pharmacology

Guselkumab (Tremfya) received Food and Drug Administration approval for the treatment of psoriatic arthritis (PsA) almost 2 years ago on the basis of a phase 3 trial, but a new substudy from that trial has now demonstrated long-term benefit in the subgroup of patients who entered the trial with axial involvement, according to data presented at the annual meeting of the Canadian Rheumatology Association.

“The symptom relief was clinically meaningful and durable through week 100,” reported Dafna D. Gladman, MD, professor of medicine and director of the psoriatic arthritis program at the University of Toronto.

In the previously published double-blind, placebo-controlled DISCOVER-2 trial, two dosing regimens of the interleukin-23 (IL-23) inhibitor guselkumab were compared with placebo in biologic-naive patients. The active regimens were similarly effective relative to placebo for the primary endpoint of 20% improvement in American College of Rheumatology response criteria (ACR20) at week 24.

In this new long-term subgroup analysis, outcomes at 2 years were evaluated in the 246 patients with axial involvement (33.3% of the total number of 739 evaluable patients). Baseline characteristics across treatment groups in this subset of the DISCOVER-2 trial were similar.
 

Guselkumab exhibits nearly twofold advantage

At 24 weeks relative to baseline, the improvement on multiple axial involvement outcome measures was approximately twofold greater with active therapy than with placebo. For example, the mean Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) score fell 2.6 points in both active treatment arms versus 1.4 on placebo.

The same relative advantage was observed when the BASDAI spinal pain subscore was isolated. There were also comparable responses on a modified BASDAI that excluded the peripheral pain response, and the Ankylosing Spondylitis Disease Activity Score (ASDAS).

When evaluated at week 52 and again at week 100, all outcomes employed to evaluate change in axial involvement were sustained. Many were further improved. In patients who initiated therapy on placebo, all of whom were switched to guselkumab at the end of the 24-week double-blind period, at least the same degree of axial symptom control relative to baseline was achieved at both time periods.

Incremental improvement observed over time

“For most measures there was further improvement at 2 years, and there was generally consistent response across patient groups stratified by HLA [human leucocyte antigen] status,” Dr. Gladman reported.

Relative to the 2.6-point reduction in the BASDAI score in the two guselkumab arms at week 24, the reductions reached 3.0, 3.1, and 3.3 at 100 weeks in the every-4-week guselkumab group, every-8-week guselkumab group, and the crossed-over placebo group, respectively. For ASDAS, the reductions at week 24 were 1.4, 1.5, and 0.7 points and reached 1.6, 1.7, and 1.6 points at 100 weeks in the every-4-week, every-8-week, and placebo crossover groups, respectively.

The sustained improvement is consistent with a previous post hoc analysis in which data from the phase 3 DISCOVER-1 trial were pooled with those from DISCOVER-2. This analysis focused on the 312 patients in these studies with axial disease documented by imaging. Again, the study showed improvement at week 24 was sustained at week 52 independent of HLA-B27 status.
 

Need for MRI confirmation seen

The potential problem with this new analysis as well as the previous analysis is the absence of MRI to provide objective evidence of axial involvement, according to Walter P. Maksymowych, MD, professor in the division of rheumatology at the University of Alberta, Edmonton.

Noting that previous studies have indicated that axial involvement assessed by investigators is not reliable even when performed with x-rays, Dr. Maksymowych said these data would be much more reassuring with MRI controls.

“We have seen little correlation between clinical symptoms and MRI manifestations of disease,” he said.

Dr. Gladman conceded this point. Baseline MRI was performed in some of the patients in this subgroup analysis, but it was not mandated. As a result, the data support benefit from guselkumab for symptomatic axial involvement, but she indicated that better evidence of a disease-modifying effect is expected from a more rigorous placebo-controlled trial of guselkumab called STAR.

This trial is requiring MRI at baseline and at week 24 and is using the Spondyloarthritis Research Consortium of Canada (SPARCC) score to assess change. Dr. Gladman said the trial is enrolling “as we speak.”

Overall, Dr. Gladman agreed with Dr. Maksymowych that objective biomarkers are important for demonstrating that treatments are improving long-term outcomes, not just relieving symptoms.

Guselkumab manufacturer Janssen supported the post hoc analysis. Dr. Gladman reported financial relationships with AbbVie, Amgen, Bristol-Myers Squibb, Eli Lilly, Galapagos, Gilead Janssen, Novartis, Pfizer, and UCB. Dr. Maksymowych reported financial relationships with AbbVie, Boehringer Ingelheim, Celgene, Eli Lilly, Galapagos, Gilead, Janssen, Novartis, Pfizer, and UCB.

Guselkumab (Tremfya) received Food and Drug Administration approval for the treatment of psoriatic arthritis (PsA) almost 2 years ago on the basis of a phase 3 trial, but a new substudy from that trial has now demonstrated long-term benefit in the subgroup of patients who entered the trial with axial involvement, according to data presented at the annual meeting of the Canadian Rheumatology Association.

“The symptom relief was clinically meaningful and durable through week 100,” reported Dafna D. Gladman, MD, professor of medicine and director of the psoriatic arthritis program at the University of Toronto.

In the previously published double-blind, placebo-controlled DISCOVER-2 trial, two dosing regimens of the interleukin-23 (IL-23) inhibitor guselkumab were compared with placebo in biologic-naive patients. The active regimens were similarly effective relative to placebo for the primary endpoint of 20% improvement in American College of Rheumatology response criteria (ACR20) at week 24.

In this new long-term subgroup analysis, outcomes at 2 years were evaluated in the 246 patients with axial involvement (33.3% of the total number of 739 evaluable patients). Baseline characteristics across treatment groups in this subset of the DISCOVER-2 trial were similar.
 

Guselkumab exhibits nearly twofold advantage

At 24 weeks relative to baseline, the improvement on multiple axial involvement outcome measures was approximately twofold greater with active therapy than with placebo. For example, the mean Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) score fell 2.6 points in both active treatment arms versus 1.4 on placebo.

The same relative advantage was observed when the BASDAI spinal pain subscore was isolated. There were also comparable responses on a modified BASDAI that excluded the peripheral pain response, and the Ankylosing Spondylitis Disease Activity Score (ASDAS).

When evaluated at week 52 and again at week 100, all outcomes employed to evaluate change in axial involvement were sustained. Many were further improved. In patients who initiated therapy on placebo, all of whom were switched to guselkumab at the end of the 24-week double-blind period, at least the same degree of axial symptom control relative to baseline was achieved at both time periods.

Incremental improvement observed over time

“For most measures there was further improvement at 2 years, and there was generally consistent response across patient groups stratified by HLA [human leucocyte antigen] status,” Dr. Gladman reported.

Relative to the 2.6-point reduction in the BASDAI score in the two guselkumab arms at week 24, the reductions reached 3.0, 3.1, and 3.3 at 100 weeks in the every-4-week guselkumab group, every-8-week guselkumab group, and the crossed-over placebo group, respectively. For ASDAS, the reductions at week 24 were 1.4, 1.5, and 0.7 points and reached 1.6, 1.7, and 1.6 points at 100 weeks in the every-4-week, every-8-week, and placebo crossover groups, respectively.

The sustained improvement is consistent with a previous post hoc analysis in which data from the phase 3 DISCOVER-1 trial were pooled with those from DISCOVER-2. This analysis focused on the 312 patients in these studies with axial disease documented by imaging. Again, the study showed improvement at week 24 was sustained at week 52 independent of HLA-B27 status.
 

Need for MRI confirmation seen

The potential problem with this new analysis as well as the previous analysis is the absence of MRI to provide objective evidence of axial involvement, according to Walter P. Maksymowych, MD, professor in the division of rheumatology at the University of Alberta, Edmonton.

Noting that previous studies have indicated that axial involvement assessed by investigators is not reliable even when performed with x-rays, Dr. Maksymowych said these data would be much more reassuring with MRI controls.

“We have seen little correlation between clinical symptoms and MRI manifestations of disease,” he said.

Dr. Gladman conceded this point. Baseline MRI was performed in some of the patients in this subgroup analysis, but it was not mandated. As a result, the data support benefit from guselkumab for symptomatic axial involvement, but she indicated that better evidence of a disease-modifying effect is expected from a more rigorous placebo-controlled trial of guselkumab called STAR.

This trial is requiring MRI at baseline and at week 24 and is using the Spondyloarthritis Research Consortium of Canada (SPARCC) score to assess change. Dr. Gladman said the trial is enrolling “as we speak.”

Overall, Dr. Gladman agreed with Dr. Maksymowych that objective biomarkers are important for demonstrating that treatments are improving long-term outcomes, not just relieving symptoms.

Guselkumab manufacturer Janssen supported the post hoc analysis. Dr. Gladman reported financial relationships with AbbVie, Amgen, Bristol-Myers Squibb, Eli Lilly, Galapagos, Gilead Janssen, Novartis, Pfizer, and UCB. Dr. Maksymowych reported financial relationships with AbbVie, Boehringer Ingelheim, Celgene, Eli Lilly, Galapagos, Gilead, Janssen, Novartis, Pfizer, and UCB.

Guselkumab (Tremfya) received Food and Drug Administration approval for the treatment of psoriatic arthritis (PsA) almost 2 years ago on the basis of a phase 3 trial, but a new substudy from that trial has now demonstrated long-term benefit in the subgroup of patients who entered the trial with axial involvement, according to data presented at the annual meeting of the Canadian Rheumatology Association.

“The symptom relief was clinically meaningful and durable through week 100,” reported Dafna D. Gladman, MD, professor of medicine and director of the psoriatic arthritis program at the University of Toronto.

In the previously published double-blind, placebo-controlled DISCOVER-2 trial, two dosing regimens of the interleukin-23 (IL-23) inhibitor guselkumab were compared with placebo in biologic-naive patients. The active regimens were similarly effective relative to placebo for the primary endpoint of 20% improvement in American College of Rheumatology response criteria (ACR20) at week 24.

In this new long-term subgroup analysis, outcomes at 2 years were evaluated in the 246 patients with axial involvement (33.3% of the total number of 739 evaluable patients). Baseline characteristics across treatment groups in this subset of the DISCOVER-2 trial were similar.
 

Guselkumab exhibits nearly twofold advantage

At 24 weeks relative to baseline, the improvement on multiple axial involvement outcome measures was approximately twofold greater with active therapy than with placebo. For example, the mean Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) score fell 2.6 points in both active treatment arms versus 1.4 on placebo.

The same relative advantage was observed when the BASDAI spinal pain subscore was isolated. There were also comparable responses on a modified BASDAI that excluded the peripheral pain response, and the Ankylosing Spondylitis Disease Activity Score (ASDAS).

When evaluated at week 52 and again at week 100, all outcomes employed to evaluate change in axial involvement were sustained. Many were further improved. In patients who initiated therapy on placebo, all of whom were switched to guselkumab at the end of the 24-week double-blind period, at least the same degree of axial symptom control relative to baseline was achieved at both time periods.

Incremental improvement observed over time

“For most measures there was further improvement at 2 years, and there was generally consistent response across patient groups stratified by HLA [human leucocyte antigen] status,” Dr. Gladman reported.

Relative to the 2.6-point reduction in the BASDAI score in the two guselkumab arms at week 24, the reductions reached 3.0, 3.1, and 3.3 at 100 weeks in the every-4-week guselkumab group, every-8-week guselkumab group, and the crossed-over placebo group, respectively. For ASDAS, the reductions at week 24 were 1.4, 1.5, and 0.7 points and reached 1.6, 1.7, and 1.6 points at 100 weeks in the every-4-week, every-8-week, and placebo crossover groups, respectively.

The sustained improvement is consistent with a previous post hoc analysis in which data from the phase 3 DISCOVER-1 trial were pooled with those from DISCOVER-2. This analysis focused on the 312 patients in these studies with axial disease documented by imaging. Again, the study showed improvement at week 24 was sustained at week 52 independent of HLA-B27 status.
 

Need for MRI confirmation seen

The potential problem with this new analysis as well as the previous analysis is the absence of MRI to provide objective evidence of axial involvement, according to Walter P. Maksymowych, MD, professor in the division of rheumatology at the University of Alberta, Edmonton.

Noting that previous studies have indicated that axial involvement assessed by investigators is not reliable even when performed with x-rays, Dr. Maksymowych said these data would be much more reassuring with MRI controls.

“We have seen little correlation between clinical symptoms and MRI manifestations of disease,” he said.

Dr. Gladman conceded this point. Baseline MRI was performed in some of the patients in this subgroup analysis, but it was not mandated. As a result, the data support benefit from guselkumab for symptomatic axial involvement, but she indicated that better evidence of a disease-modifying effect is expected from a more rigorous placebo-controlled trial of guselkumab called STAR.

This trial is requiring MRI at baseline and at week 24 and is using the Spondyloarthritis Research Consortium of Canada (SPARCC) score to assess change. Dr. Gladman said the trial is enrolling “as we speak.”

Overall, Dr. Gladman agreed with Dr. Maksymowych that objective biomarkers are important for demonstrating that treatments are improving long-term outcomes, not just relieving symptoms.

Guselkumab manufacturer Janssen supported the post hoc analysis. Dr. Gladman reported financial relationships with AbbVie, Amgen, Bristol-Myers Squibb, Eli Lilly, Galapagos, Gilead Janssen, Novartis, Pfizer, and UCB. Dr. Maksymowych reported financial relationships with AbbVie, Boehringer Ingelheim, Celgene, Eli Lilly, Galapagos, Gilead, Janssen, Novartis, Pfizer, and UCB.

Samples from patients in the United States and Kenya show an increasing emergence of previously undetected vancomycin-resistant strains of Clostridioides difficile, sparking concern as recurrences in the treatment of C. difficile infection (CDI) continue to rise.

“Our results may help explain a decreasing effectiveness of antibiotic-based therapy in C. difficile infection, since a significant proportion of patients harboring strains with reduced susceptibility to vancomycin may not respond to treatment,” reported the authors in research published recently in Clinical Infectious Diseases.

The spread of the resistant strains “has serious public health implications, underscoring an urgent need for a comprehensive analysis of the circulating strains to help inform clinical decisions,” they added.

Commenting on the findings, Cornelius J. Clancy, MD, professor of medicine at the University of Pittsburgh, and chief of infectious diseases at the Veterans Affairs Pittsburgh Healthcare System, echoed the concern.

“The casual belief has been that [C. difficile] strains at most centers can be assumed to be vancomycin susceptible,” he told this news organization. “This study shows that this assumption can no longer be taken as a given.”

Dr. Clancy, who was not involved with this research, noted that “based on this study, there might be need for the Infectious Diseases Society of America and other organizations to offer guidance on generating good, quality surveillance data for C. difficile resistance.”

With C. difficile showing the ability to resist multiple antibiotics, drugs in the armamentarium to treat the infection have declined in recent years, and recurrences with the infection are reported in up to 25% of cases.

Oral vancomycin is recommended as the antibiotic of choice by the IDSA and the Society for Healthcare Epidemiology of America for severe as well as nonsevere cases of CDI, and although there are reports of nine vancomycin-resistant gene clusters, most involve Enterococcus.

To take a closer look at the prevalence of vancomycin-resistant C. difficile strains, first author Charles Darkoh, PhD, with the Center for Infectious Diseases at the University of Texas Health Science Center, Houston, and colleagues analyzed stool samples from patients with CDI, including 438 patients in Houston, taken between 2012 and 2017, and 98 in Nairobi, Kenya, taken in 2017.

They found that, among samples from patients in Houston, over the time period, 26% showed vancomycin nonsusceptible C. difficile isolates and 29% had isolates that were metronidazole resistant.

And among samples from the Nairobi patients, 67% harbored vancomycin-resistant isolates and 85% had isolates resistant to metronidazole.

Of note, the proportion of samples containing vancomycin-resistant C. difficile in the Houston patients showed a marked increase over time, from «complete absence» in 2012 to approximately 35% in 2017, the authors reported.

“These nonsusceptibility rates significantly exceeded prior reports from other studies conducted in the United States and Europe from 2011 to 2014, suggesting a lower percentage of resistance to both metronidazole and vancomycin,” the authors wrote.

Further experiments on mouse models infected with one of the vancomycin-resistant isolates showed that treatment with vancomycin failed to eradicate the infection, and 5-day survival was significantly lower after vancomycin treatment in those mice (25%) versus those infected with strains known to be vancomycin sensitive (50%).
 

Unrecognized genetic strains

Whole-genome sequencing of 10 of the resistant isolates showed no matches with gene clusters that have been previously recognized as being vancomycin resistant, suggesting the emergence of new clusters.

“Together, these results suggest unknown genetic elements associated with vancomycin nonsusceptibility in isolates circulating in the patient population,” the authors wrote.

Dr. Darkoh told this news organization that the research team is currently working to further investigate the patterns and mechanisms.

“We are currently working on a follow-up study for the next 5 years to find out how widespread this is,” he said. “We want to make sure it’s not necessarily just occurring in the settings we studied, and we also need to establish the mechanism of resistance.”

Further commenting on the results, Dr. Clancy noted that “the extent of resistance caught many in the field a bit off guard, as they are higher than previously reported.”

“The data are also concerning because most centers do not routinely test C. difficile for drug susceptibility.”

Dr. Clancy noted that “another immediately pressing need is to understand mechanisms of resistance. It was quite striking that vancomycin-resistant strains in this study did not carry vanA genes, pointing to previously unrecognized mechanisms of resistance.”

“As is often the case, antibiotic overuse was likely a factor in the resistances, with overtesting often leading to overtreatment of C. difficile,” Dr. Clancy said. “The situation may have been compounded by failure to appreciate how entrenched C. difficile resistance may be at certain hospitals, since widespread susceptibility testing is generally not routinely performed.”

As alternative treatments, Dr. Clancy pointed to the recent IDSA update, which included a stronger endorsement of fidaxomicin.

“Of course, there is also the need to assure that data on resistance to agents like fidaxomicin are generated going forward,” he noted.

The study was supported by was supported by National Institutes of Health, the National Institute of Allergy and Infectious Diseases, the Texas Medical Center Digestive Diseases Center, and the University of Texas Health Science Center. Dr. Darkoh has disclosed no relevant financial relationships. One coauthor received grant support from Merck, Entasis Pharmaceuticals, and MeMed Diagnostics. Dr. Clancy disclosed advisory board, consulting and/or research relationships with Merck, Qpex Biopharma, Shionogi, Astellas, Cidara, Scynexis, and Needham & Associates.

Help your patients understand their C. difficile diagnosis by sharing patient education from the AGA GI Patient Center: www.gastro.org/Cdiff. 

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

Samples from patients in the United States and Kenya show an increasing emergence of previously undetected vancomycin-resistant strains of Clostridioides difficile, sparking concern as recurrences in the treatment of C. difficile infection (CDI) continue to rise.

“Our results may help explain a decreasing effectiveness of antibiotic-based therapy in C. difficile infection, since a significant proportion of patients harboring strains with reduced susceptibility to vancomycin may not respond to treatment,” reported the authors in research published recently in Clinical Infectious Diseases.

The spread of the resistant strains “has serious public health implications, underscoring an urgent need for a comprehensive analysis of the circulating strains to help inform clinical decisions,” they added.

Commenting on the findings, Cornelius J. Clancy, MD, professor of medicine at the University of Pittsburgh, and chief of infectious diseases at the Veterans Affairs Pittsburgh Healthcare System, echoed the concern.

“The casual belief has been that [C. difficile] strains at most centers can be assumed to be vancomycin susceptible,” he told this news organization. “This study shows that this assumption can no longer be taken as a given.”

Dr. Clancy, who was not involved with this research, noted that “based on this study, there might be need for the Infectious Diseases Society of America and other organizations to offer guidance on generating good, quality surveillance data for C. difficile resistance.”

With C. difficile showing the ability to resist multiple antibiotics, drugs in the armamentarium to treat the infection have declined in recent years, and recurrences with the infection are reported in up to 25% of cases.

Oral vancomycin is recommended as the antibiotic of choice by the IDSA and the Society for Healthcare Epidemiology of America for severe as well as nonsevere cases of CDI, and although there are reports of nine vancomycin-resistant gene clusters, most involve Enterococcus.

To take a closer look at the prevalence of vancomycin-resistant C. difficile strains, first author Charles Darkoh, PhD, with the Center for Infectious Diseases at the University of Texas Health Science Center, Houston, and colleagues analyzed stool samples from patients with CDI, including 438 patients in Houston, taken between 2012 and 2017, and 98 in Nairobi, Kenya, taken in 2017.

They found that, among samples from patients in Houston, over the time period, 26% showed vancomycin nonsusceptible C. difficile isolates and 29% had isolates that were metronidazole resistant.

And among samples from the Nairobi patients, 67% harbored vancomycin-resistant isolates and 85% had isolates resistant to metronidazole.

Of note, the proportion of samples containing vancomycin-resistant C. difficile in the Houston patients showed a marked increase over time, from «complete absence» in 2012 to approximately 35% in 2017, the authors reported.

“These nonsusceptibility rates significantly exceeded prior reports from other studies conducted in the United States and Europe from 2011 to 2014, suggesting a lower percentage of resistance to both metronidazole and vancomycin,” the authors wrote.

Further experiments on mouse models infected with one of the vancomycin-resistant isolates showed that treatment with vancomycin failed to eradicate the infection, and 5-day survival was significantly lower after vancomycin treatment in those mice (25%) versus those infected with strains known to be vancomycin sensitive (50%).
 

Unrecognized genetic strains

Whole-genome sequencing of 10 of the resistant isolates showed no matches with gene clusters that have been previously recognized as being vancomycin resistant, suggesting the emergence of new clusters.

“Together, these results suggest unknown genetic elements associated with vancomycin nonsusceptibility in isolates circulating in the patient population,” the authors wrote.

Dr. Darkoh told this news organization that the research team is currently working to further investigate the patterns and mechanisms.

“We are currently working on a follow-up study for the next 5 years to find out how widespread this is,” he said. “We want to make sure it’s not necessarily just occurring in the settings we studied, and we also need to establish the mechanism of resistance.”

Further commenting on the results, Dr. Clancy noted that “the extent of resistance caught many in the field a bit off guard, as they are higher than previously reported.”

“The data are also concerning because most centers do not routinely test C. difficile for drug susceptibility.”

Dr. Clancy noted that “another immediately pressing need is to understand mechanisms of resistance. It was quite striking that vancomycin-resistant strains in this study did not carry vanA genes, pointing to previously unrecognized mechanisms of resistance.”

“As is often the case, antibiotic overuse was likely a factor in the resistances, with overtesting often leading to overtreatment of C. difficile,” Dr. Clancy said. “The situation may have been compounded by failure to appreciate how entrenched C. difficile resistance may be at certain hospitals, since widespread susceptibility testing is generally not routinely performed.”

As alternative treatments, Dr. Clancy pointed to the recent IDSA update, which included a stronger endorsement of fidaxomicin.

“Of course, there is also the need to assure that data on resistance to agents like fidaxomicin are generated going forward,” he noted.

The study was supported by was supported by National Institutes of Health, the National Institute of Allergy and Infectious Diseases, the Texas Medical Center Digestive Diseases Center, and the University of Texas Health Science Center. Dr. Darkoh has disclosed no relevant financial relationships. One coauthor received grant support from Merck, Entasis Pharmaceuticals, and MeMed Diagnostics. Dr. Clancy disclosed advisory board, consulting and/or research relationships with Merck, Qpex Biopharma, Shionogi, Astellas, Cidara, Scynexis, and Needham & Associates.

Help your patients understand their C. difficile diagnosis by sharing patient education from the AGA GI Patient Center: www.gastro.org/Cdiff. 

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

Samples from patients in the United States and Kenya show an increasing emergence of previously undetected vancomycin-resistant strains of Clostridioides difficile, sparking concern as recurrences in the treatment of C. difficile infection (CDI) continue to rise.

“Our results may help explain a decreasing effectiveness of antibiotic-based therapy in C. difficile infection, since a significant proportion of patients harboring strains with reduced susceptibility to vancomycin may not respond to treatment,” reported the authors in research published recently in Clinical Infectious Diseases.

The spread of the resistant strains “has serious public health implications, underscoring an urgent need for a comprehensive analysis of the circulating strains to help inform clinical decisions,” they added.

Commenting on the findings, Cornelius J. Clancy, MD, professor of medicine at the University of Pittsburgh, and chief of infectious diseases at the Veterans Affairs Pittsburgh Healthcare System, echoed the concern.

“The casual belief has been that [C. difficile] strains at most centers can be assumed to be vancomycin susceptible,” he told this news organization. “This study shows that this assumption can no longer be taken as a given.”

Dr. Clancy, who was not involved with this research, noted that “based on this study, there might be need for the Infectious Diseases Society of America and other organizations to offer guidance on generating good, quality surveillance data for C. difficile resistance.”

With C. difficile showing the ability to resist multiple antibiotics, drugs in the armamentarium to treat the infection have declined in recent years, and recurrences with the infection are reported in up to 25% of cases.

Oral vancomycin is recommended as the antibiotic of choice by the IDSA and the Society for Healthcare Epidemiology of America for severe as well as nonsevere cases of CDI, and although there are reports of nine vancomycin-resistant gene clusters, most involve Enterococcus.

To take a closer look at the prevalence of vancomycin-resistant C. difficile strains, first author Charles Darkoh, PhD, with the Center for Infectious Diseases at the University of Texas Health Science Center, Houston, and colleagues analyzed stool samples from patients with CDI, including 438 patients in Houston, taken between 2012 and 2017, and 98 in Nairobi, Kenya, taken in 2017.

They found that, among samples from patients in Houston, over the time period, 26% showed vancomycin nonsusceptible C. difficile isolates and 29% had isolates that were metronidazole resistant.

And among samples from the Nairobi patients, 67% harbored vancomycin-resistant isolates and 85% had isolates resistant to metronidazole.

Of note, the proportion of samples containing vancomycin-resistant C. difficile in the Houston patients showed a marked increase over time, from «complete absence» in 2012 to approximately 35% in 2017, the authors reported.

“These nonsusceptibility rates significantly exceeded prior reports from other studies conducted in the United States and Europe from 2011 to 2014, suggesting a lower percentage of resistance to both metronidazole and vancomycin,” the authors wrote.

Further experiments on mouse models infected with one of the vancomycin-resistant isolates showed that treatment with vancomycin failed to eradicate the infection, and 5-day survival was significantly lower after vancomycin treatment in those mice (25%) versus those infected with strains known to be vancomycin sensitive (50%).
 

Unrecognized genetic strains

Whole-genome sequencing of 10 of the resistant isolates showed no matches with gene clusters that have been previously recognized as being vancomycin resistant, suggesting the emergence of new clusters.

“Together, these results suggest unknown genetic elements associated with vancomycin nonsusceptibility in isolates circulating in the patient population,” the authors wrote.

Dr. Darkoh told this news organization that the research team is currently working to further investigate the patterns and mechanisms.

“We are currently working on a follow-up study for the next 5 years to find out how widespread this is,” he said. “We want to make sure it’s not necessarily just occurring in the settings we studied, and we also need to establish the mechanism of resistance.”

Further commenting on the results, Dr. Clancy noted that “the extent of resistance caught many in the field a bit off guard, as they are higher than previously reported.”

“The data are also concerning because most centers do not routinely test C. difficile for drug susceptibility.”

Dr. Clancy noted that “another immediately pressing need is to understand mechanisms of resistance. It was quite striking that vancomycin-resistant strains in this study did not carry vanA genes, pointing to previously unrecognized mechanisms of resistance.”

“As is often the case, antibiotic overuse was likely a factor in the resistances, with overtesting often leading to overtreatment of C. difficile,” Dr. Clancy said. “The situation may have been compounded by failure to appreciate how entrenched C. difficile resistance may be at certain hospitals, since widespread susceptibility testing is generally not routinely performed.”

As alternative treatments, Dr. Clancy pointed to the recent IDSA update, which included a stronger endorsement of fidaxomicin.

“Of course, there is also the need to assure that data on resistance to agents like fidaxomicin are generated going forward,” he noted.

The study was supported by was supported by National Institutes of Health, the National Institute of Allergy and Infectious Diseases, the Texas Medical Center Digestive Diseases Center, and the University of Texas Health Science Center. Dr. Darkoh has disclosed no relevant financial relationships. One coauthor received grant support from Merck, Entasis Pharmaceuticals, and MeMed Diagnostics. Dr. Clancy disclosed advisory board, consulting and/or research relationships with Merck, Qpex Biopharma, Shionogi, Astellas, Cidara, Scynexis, and Needham & Associates.

Help your patients understand their C. difficile diagnosis by sharing patient education from the AGA GI Patient Center: www.gastro.org/Cdiff. 

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

Early, permanent discontinuation of venetoclax in the treatment of relapsed/refractory (r/r) chronic lymphocytic leukemia (CLL) is linked to shortened survival outcomes, but temporary interruption shows no impact on survival, underscoring the importance of preventing discontinuation.

“There’s not a lot of awareness about the fact that you’re probably better off not permanently discontinuing treatment,” Anthony R. Mato, first author of the research published in Haematologica, said in an interview.

Courtsey Memorial Sloan Kettering Cancer Center

“Instead, attempting dose reductions with later resumption to complete the planned schedule for treatment probably could improve outcomes,” said Dr. Mato, who is director of the CLL Program at Memorial Sloan Kettering Cancer Center in New York.

Venetoclax, a potent B-cell lymphoma-2 (BCL2) inhibitor, provides a novel, chemotherapy-free treatment option for first-line and r/r CLL. While its safety profile is manageable, treatment interruptions are very common, and premature discontinuations are reported in about a third of patients, often because of adverse events.

Lacking data on the effects of those interruptions on survival outcomes, Dr. Mato and colleagues conducted a post hoc analysis of the phase 3 MURANO trial. In this open-label study, treatment with six cycles of venetoclax in combination with rituximab followed by venetoclax once daily for a total of 2 years showed superior progression-free survival, compared with six cycles of bendamustine plus rituximab in patients with r/r CLL (P < .0001).

The current analysis involved 194 intention-to-treat patients from the trial’s venetoclax arm, among whom 140 (72%) completed 2 years of therapy, and 54 (28%) prematurely discontinued treatment. The most common reasons for discontinuation were adverse events (53.7%) and disease progression (22.2%).

Among those with early discontinuation for any reason except disease progression, the rate of progression-free survival was significantly inferior, compared with those who completed the treatment (hazard ratio, 5.98; P < .0001), as was the rate or discontinuation caused specifically by adverse events, which most commonly involved neutropenia or thrombocytopenia (HR, 5.82; P < .0001).

Those who discontinued had a mean duration of venetoclax therapy of 11.3 months, compared with 24.4 months for all patients. For each additional month of venetoclax therapy, there was a significantly lower risk of a progression-free survival event (P = .0263) and of an overall survival event (P < .0001).

The treatment interruption rate was much higher, at 69% (134), involving neutropenia in 43% (84) of instances and requiring dose reductions in 23% (45) of cases.

However, in contrast to permanent discontinuations, the temporary interruptions and dose reductions had no significant effect on progression-free or overall survival, regardless of the duration.

“Improved progression-free and overall survival were associated with greater cumulative venetoclax treatment exposure,” the authors wrote.

“The results of these analyses highlight the importance of appropriately managing treatment modifications to ensure optimal outcomes for patients receiving targeted treatment for CLL,” they said.

Key measures including “better supportive care, use of growth factors, and more aggressive strategies for dose reduction could potentially help to improve or decrease the number of patients discontinuing due to an adverse event,” Dr. Mato added.“We can’t say definitively because this is not a randomized study – it’s a retrospective analysis from a randomized study – but those measures likely could have a positive impact on patient outcomes.”

The study received support from Genentech and AbbVie. Dr. Mato reported consulting or other relationships with AbbVie, AstraZeneca, Celgene, DTRM, Genentech, Janssen, Loxo, PCYC, Sunesis, and TG Therapeutics.

Early, permanent discontinuation of venetoclax in the treatment of relapsed/refractory (r/r) chronic lymphocytic leukemia (CLL) is linked to shortened survival outcomes, but temporary interruption shows no impact on survival, underscoring the importance of preventing discontinuation.

“There’s not a lot of awareness about the fact that you’re probably better off not permanently discontinuing treatment,” Anthony R. Mato, first author of the research published in Haematologica, said in an interview.

Courtsey Memorial Sloan Kettering Cancer Center

“Instead, attempting dose reductions with later resumption to complete the planned schedule for treatment probably could improve outcomes,” said Dr. Mato, who is director of the CLL Program at Memorial Sloan Kettering Cancer Center in New York.

Venetoclax, a potent B-cell lymphoma-2 (BCL2) inhibitor, provides a novel, chemotherapy-free treatment option for first-line and r/r CLL. While its safety profile is manageable, treatment interruptions are very common, and premature discontinuations are reported in about a third of patients, often because of adverse events.

Lacking data on the effects of those interruptions on survival outcomes, Dr. Mato and colleagues conducted a post hoc analysis of the phase 3 MURANO trial. In this open-label study, treatment with six cycles of venetoclax in combination with rituximab followed by venetoclax once daily for a total of 2 years showed superior progression-free survival, compared with six cycles of bendamustine plus rituximab in patients with r/r CLL (P < .0001).

The current analysis involved 194 intention-to-treat patients from the trial’s venetoclax arm, among whom 140 (72%) completed 2 years of therapy, and 54 (28%) prematurely discontinued treatment. The most common reasons for discontinuation were adverse events (53.7%) and disease progression (22.2%).

Among those with early discontinuation for any reason except disease progression, the rate of progression-free survival was significantly inferior, compared with those who completed the treatment (hazard ratio, 5.98; P < .0001), as was the rate or discontinuation caused specifically by adverse events, which most commonly involved neutropenia or thrombocytopenia (HR, 5.82; P < .0001).

Those who discontinued had a mean duration of venetoclax therapy of 11.3 months, compared with 24.4 months for all patients. For each additional month of venetoclax therapy, there was a significantly lower risk of a progression-free survival event (P = .0263) and of an overall survival event (P < .0001).

The treatment interruption rate was much higher, at 69% (134), involving neutropenia in 43% (84) of instances and requiring dose reductions in 23% (45) of cases.

However, in contrast to permanent discontinuations, the temporary interruptions and dose reductions had no significant effect on progression-free or overall survival, regardless of the duration.

“Improved progression-free and overall survival were associated with greater cumulative venetoclax treatment exposure,” the authors wrote.

“The results of these analyses highlight the importance of appropriately managing treatment modifications to ensure optimal outcomes for patients receiving targeted treatment for CLL,” they said.

Key measures including “better supportive care, use of growth factors, and more aggressive strategies for dose reduction could potentially help to improve or decrease the number of patients discontinuing due to an adverse event,” Dr. Mato added.“We can’t say definitively because this is not a randomized study – it’s a retrospective analysis from a randomized study – but those measures likely could have a positive impact on patient outcomes.”

The study received support from Genentech and AbbVie. Dr. Mato reported consulting or other relationships with AbbVie, AstraZeneca, Celgene, DTRM, Genentech, Janssen, Loxo, PCYC, Sunesis, and TG Therapeutics.

Early, permanent discontinuation of venetoclax in the treatment of relapsed/refractory (r/r) chronic lymphocytic leukemia (CLL) is linked to shortened survival outcomes, but temporary interruption shows no impact on survival, underscoring the importance of preventing discontinuation.

“There’s not a lot of awareness about the fact that you’re probably better off not permanently discontinuing treatment,” Anthony R. Mato, first author of the research published in Haematologica, said in an interview.

Courtsey Memorial Sloan Kettering Cancer Center

“Instead, attempting dose reductions with later resumption to complete the planned schedule for treatment probably could improve outcomes,” said Dr. Mato, who is director of the CLL Program at Memorial Sloan Kettering Cancer Center in New York.

Venetoclax, a potent B-cell lymphoma-2 (BCL2) inhibitor, provides a novel, chemotherapy-free treatment option for first-line and r/r CLL. While its safety profile is manageable, treatment interruptions are very common, and premature discontinuations are reported in about a third of patients, often because of adverse events.

Lacking data on the effects of those interruptions on survival outcomes, Dr. Mato and colleagues conducted a post hoc analysis of the phase 3 MURANO trial. In this open-label study, treatment with six cycles of venetoclax in combination with rituximab followed by venetoclax once daily for a total of 2 years showed superior progression-free survival, compared with six cycles of bendamustine plus rituximab in patients with r/r CLL (P < .0001).

The current analysis involved 194 intention-to-treat patients from the trial’s venetoclax arm, among whom 140 (72%) completed 2 years of therapy, and 54 (28%) prematurely discontinued treatment. The most common reasons for discontinuation were adverse events (53.7%) and disease progression (22.2%).

Among those with early discontinuation for any reason except disease progression, the rate of progression-free survival was significantly inferior, compared with those who completed the treatment (hazard ratio, 5.98; P < .0001), as was the rate or discontinuation caused specifically by adverse events, which most commonly involved neutropenia or thrombocytopenia (HR, 5.82; P < .0001).

Those who discontinued had a mean duration of venetoclax therapy of 11.3 months, compared with 24.4 months for all patients. For each additional month of venetoclax therapy, there was a significantly lower risk of a progression-free survival event (P = .0263) and of an overall survival event (P < .0001).

The treatment interruption rate was much higher, at 69% (134), involving neutropenia in 43% (84) of instances and requiring dose reductions in 23% (45) of cases.

However, in contrast to permanent discontinuations, the temporary interruptions and dose reductions had no significant effect on progression-free or overall survival, regardless of the duration.

“Improved progression-free and overall survival were associated with greater cumulative venetoclax treatment exposure,” the authors wrote.

“The results of these analyses highlight the importance of appropriately managing treatment modifications to ensure optimal outcomes for patients receiving targeted treatment for CLL,” they said.

Key measures including “better supportive care, use of growth factors, and more aggressive strategies for dose reduction could potentially help to improve or decrease the number of patients discontinuing due to an adverse event,” Dr. Mato added.“We can’t say definitively because this is not a randomized study – it’s a retrospective analysis from a randomized study – but those measures likely could have a positive impact on patient outcomes.”

The study received support from Genentech and AbbVie. Dr. Mato reported consulting or other relationships with AbbVie, AstraZeneca, Celgene, DTRM, Genentech, Janssen, Loxo, PCYC, Sunesis, and TG Therapeutics.

Several relatively large real-world analyses of Janus kinase inhibitors (JAKi) in patients with rheumatoid arthritis appear to show that the oral small-molecule drugs are discontinued and retained at rates similar to or better than biologic disease-modifying antirheumatic drugs (bDMARDs), including tumor necrosis factor inhibitors (TNFi), according to studies presented at the annual meeting of the Canadian Rheumatology Association.

The findings of these studies, although conducted prior to the Food and Drug Administration’s September 2021 announcement of a boxed warning for JAKi, do not lend support to the warning’s message of higher risks of major adverse cardiovascular events (MACE), blood clots, cancer, and death associated with JAKi.

In one study, discontinuation of JAKi-class drugs was less common than discontinuation of bDMARD-class drugs, including tumor necrosis factor inhibitors (TNFi), according to a multicenter team of investigators led by Janet Pope, MD, a professor in the division of rheumatology at the University of Western Ontario, London.

The greater durability of the JAKi relative to TNFi “seem to be driven by a greater loss of efficacy in bDMARDs over time,” reported Samir Magdy Iskander, a medical student at the university, who presented the data.
 

JAKi rival bDMARDs for long-term retention

In a separate but larger analysis, the retention rates with the JAKi tofacitinib (Xeljanz) and TNFi in two RA registries in Canada were about the same after a mean follow-up of 23.2 months (36.9% vs. 37.5%), but the tofacitinib group was at a relative disadvantage. Relative to the bDMARD group, patients taking JAKi were more likely to have had prior treatment with a bDMARD (66.9% vs. 33.9%), to have a higher median baseline Clinical Disease Activity Index (CDAI) score (22.1 vs. 20.0; P < .05), and to be older (59.5 vs. 57.6 years).

In this study, 1,318 patients with RA enrolled in the Ontario Best Practices Research Initiative (OBRI) or a Quebec cohort called RHUMADATA were evaluated, reported Mohammad Movahedi, MD, PhD, of the Institute of Health Policy, Management, and Evaluation at the University of Toronto.

“We have not yet analyzed the reasons for discontinuation, but the data show that retention is about the same, meaning that selection of one agent over the other should be tailored according to patient characteristics,” Dr. Movahedi said.

Reasons for discontinuation were presented in the other observational study, which included 333 adult patients with RA from two centers in Ontario. The discontinuation rate for adverse events was approximately 20% in both groups (HR, 1.0005; P = .98). However, the discontinuation rate for lack of efficacy favored the JAKi, reaching statistical significance.
 

TNFi failure for lack of efficacy is higher

“For lack of efficacy, the discontinuation rate was about 35% lower on the JAKi [HR, 0.6543; P = .029],” Mr. Iskander reported. Relative to those taking a TNFi, those on a JAKi demonstrated “greater durability regardless of gender, age, disease duration, and prior lines of therapy.”

In a population of patients who have not achieved an adequate response to conventional synthetic DMARDs (csDMARDs), which describes the study population from the two Ontario centers, JAKi “may be considered as a preferable method of treatment,” Mr. Iskander said.

Pointing out that many clinicians have interpreted the boxed warning as a relative contraindication for use of JAKi as first-line therapy in patients with an inadequate response to csDMARDs, Marinka Twilt, MD, PhD, the moderator of the scientific session where these data were presented, questioned the conclusion. In the boxed warning, clinicians and patients are advised to consider an increased risk of serious infections, malignancy, and cardiovascular-related mortality in individuals older than 50 years.

In response, Mr. Iskander said that the data were collected and analyzed prior to the change in labeling. He acknowledged that this study was not designed to capture long-term risks, such as cardiovascular disease or malignancy. In this analysis, the safety and tolerability of JAKi and bDMARDs appeared comparable.
 

NEJM published study leading to boxed warning

Just a week prior to the CRA annual meeting, the New England Journal of Medicine published an FDA-mandated postmarketing trial of tofacitinib that was used by the agency to justify the boxed warning for JAKi with indications for artitis and other inflammatory diseases. In that open-label trial, more than 4,000 patients aged 50 years or older with at least one additional cardiovascular risk factor were randomized to 5 mg tofacitinib twice daily, 10 mg tofacitinib twice daily, or a TNFi (adalimumab or etanercept).

The efficacy of the therapies was similar, but tofacitinib failed to meet predefined noninferiority criteria for the co–primary endpoints of MACE or cancer (excluding nonmelanoma skin cancer). For tofacitinib relative to TNFi, the hazard ratio was 1.33 for MACE and 1.48 for cancers. The JAKi was also associated with higher incidences of opportunistic infections.

Mr. Iskander noted that Canadian clinical practice guidelines currently identify JAKi as a reasonable first-line alternative to bDMARDs after inadequate response to csDMARDs. While his data support that position, Dr. Twilt indicated that the benefit-to-risk ratio of JAKi might need recalculation based on the data that led the FDA to issue its boxed warning. She questioned whether the language regarding the relative role of JAKi and bDMARDs will change in coming RA guideline revisions.

Dr. Iskander reported no potential conflicts of interest. Dr. Movahedi did not list any personal conflicts of interest but acknowledged that OBRI received unrestricted grants from a variety of pharmaceutical companies, including those that manufacture bDMARDs and JAKi. Dr. Twilt reported no potential conflicts of interest.

Several relatively large real-world analyses of Janus kinase inhibitors (JAKi) in patients with rheumatoid arthritis appear to show that the oral small-molecule drugs are discontinued and retained at rates similar to or better than biologic disease-modifying antirheumatic drugs (bDMARDs), including tumor necrosis factor inhibitors (TNFi), according to studies presented at the annual meeting of the Canadian Rheumatology Association.

The findings of these studies, although conducted prior to the Food and Drug Administration’s September 2021 announcement of a boxed warning for JAKi, do not lend support to the warning’s message of higher risks of major adverse cardiovascular events (MACE), blood clots, cancer, and death associated with JAKi.

In one study, discontinuation of JAKi-class drugs was less common than discontinuation of bDMARD-class drugs, including tumor necrosis factor inhibitors (TNFi), according to a multicenter team of investigators led by Janet Pope, MD, a professor in the division of rheumatology at the University of Western Ontario, London.

The greater durability of the JAKi relative to TNFi “seem to be driven by a greater loss of efficacy in bDMARDs over time,” reported Samir Magdy Iskander, a medical student at the university, who presented the data.
 

JAKi rival bDMARDs for long-term retention

In a separate but larger analysis, the retention rates with the JAKi tofacitinib (Xeljanz) and TNFi in two RA registries in Canada were about the same after a mean follow-up of 23.2 months (36.9% vs. 37.5%), but the tofacitinib group was at a relative disadvantage. Relative to the bDMARD group, patients taking JAKi were more likely to have had prior treatment with a bDMARD (66.9% vs. 33.9%), to have a higher median baseline Clinical Disease Activity Index (CDAI) score (22.1 vs. 20.0; P < .05), and to be older (59.5 vs. 57.6 years).

In this study, 1,318 patients with RA enrolled in the Ontario Best Practices Research Initiative (OBRI) or a Quebec cohort called RHUMADATA were evaluated, reported Mohammad Movahedi, MD, PhD, of the Institute of Health Policy, Management, and Evaluation at the University of Toronto.

“We have not yet analyzed the reasons for discontinuation, but the data show that retention is about the same, meaning that selection of one agent over the other should be tailored according to patient characteristics,” Dr. Movahedi said.

Reasons for discontinuation were presented in the other observational study, which included 333 adult patients with RA from two centers in Ontario. The discontinuation rate for adverse events was approximately 20% in both groups (HR, 1.0005; P = .98). However, the discontinuation rate for lack of efficacy favored the JAKi, reaching statistical significance.
 

TNFi failure for lack of efficacy is higher

“For lack of efficacy, the discontinuation rate was about 35% lower on the JAKi [HR, 0.6543; P = .029],” Mr. Iskander reported. Relative to those taking a TNFi, those on a JAKi demonstrated “greater durability regardless of gender, age, disease duration, and prior lines of therapy.”

In a population of patients who have not achieved an adequate response to conventional synthetic DMARDs (csDMARDs), which describes the study population from the two Ontario centers, JAKi “may be considered as a preferable method of treatment,” Mr. Iskander said.

Pointing out that many clinicians have interpreted the boxed warning as a relative contraindication for use of JAKi as first-line therapy in patients with an inadequate response to csDMARDs, Marinka Twilt, MD, PhD, the moderator of the scientific session where these data were presented, questioned the conclusion. In the boxed warning, clinicians and patients are advised to consider an increased risk of serious infections, malignancy, and cardiovascular-related mortality in individuals older than 50 years.

In response, Mr. Iskander said that the data were collected and analyzed prior to the change in labeling. He acknowledged that this study was not designed to capture long-term risks, such as cardiovascular disease or malignancy. In this analysis, the safety and tolerability of JAKi and bDMARDs appeared comparable.
 

NEJM published study leading to boxed warning

Just a week prior to the CRA annual meeting, the New England Journal of Medicine published an FDA-mandated postmarketing trial of tofacitinib that was used by the agency to justify the boxed warning for JAKi with indications for artitis and other inflammatory diseases. In that open-label trial, more than 4,000 patients aged 50 years or older with at least one additional cardiovascular risk factor were randomized to 5 mg tofacitinib twice daily, 10 mg tofacitinib twice daily, or a TNFi (adalimumab or etanercept).

The efficacy of the therapies was similar, but tofacitinib failed to meet predefined noninferiority criteria for the co–primary endpoints of MACE or cancer (excluding nonmelanoma skin cancer). For tofacitinib relative to TNFi, the hazard ratio was 1.33 for MACE and 1.48 for cancers. The JAKi was also associated with higher incidences of opportunistic infections.

Mr. Iskander noted that Canadian clinical practice guidelines currently identify JAKi as a reasonable first-line alternative to bDMARDs after inadequate response to csDMARDs. While his data support that position, Dr. Twilt indicated that the benefit-to-risk ratio of JAKi might need recalculation based on the data that led the FDA to issue its boxed warning. She questioned whether the language regarding the relative role of JAKi and bDMARDs will change in coming RA guideline revisions.

Dr. Iskander reported no potential conflicts of interest. Dr. Movahedi did not list any personal conflicts of interest but acknowledged that OBRI received unrestricted grants from a variety of pharmaceutical companies, including those that manufacture bDMARDs and JAKi. Dr. Twilt reported no potential conflicts of interest.

Several relatively large real-world analyses of Janus kinase inhibitors (JAKi) in patients with rheumatoid arthritis appear to show that the oral small-molecule drugs are discontinued and retained at rates similar to or better than biologic disease-modifying antirheumatic drugs (bDMARDs), including tumor necrosis factor inhibitors (TNFi), according to studies presented at the annual meeting of the Canadian Rheumatology Association.

The findings of these studies, although conducted prior to the Food and Drug Administration’s September 2021 announcement of a boxed warning for JAKi, do not lend support to the warning’s message of higher risks of major adverse cardiovascular events (MACE), blood clots, cancer, and death associated with JAKi.

In one study, discontinuation of JAKi-class drugs was less common than discontinuation of bDMARD-class drugs, including tumor necrosis factor inhibitors (TNFi), according to a multicenter team of investigators led by Janet Pope, MD, a professor in the division of rheumatology at the University of Western Ontario, London.

The greater durability of the JAKi relative to TNFi “seem to be driven by a greater loss of efficacy in bDMARDs over time,” reported Samir Magdy Iskander, a medical student at the university, who presented the data.
 

JAKi rival bDMARDs for long-term retention

In a separate but larger analysis, the retention rates with the JAKi tofacitinib (Xeljanz) and TNFi in two RA registries in Canada were about the same after a mean follow-up of 23.2 months (36.9% vs. 37.5%), but the tofacitinib group was at a relative disadvantage. Relative to the bDMARD group, patients taking JAKi were more likely to have had prior treatment with a bDMARD (66.9% vs. 33.9%), to have a higher median baseline Clinical Disease Activity Index (CDAI) score (22.1 vs. 20.0; P < .05), and to be older (59.5 vs. 57.6 years).

In this study, 1,318 patients with RA enrolled in the Ontario Best Practices Research Initiative (OBRI) or a Quebec cohort called RHUMADATA were evaluated, reported Mohammad Movahedi, MD, PhD, of the Institute of Health Policy, Management, and Evaluation at the University of Toronto.

“We have not yet analyzed the reasons for discontinuation, but the data show that retention is about the same, meaning that selection of one agent over the other should be tailored according to patient characteristics,” Dr. Movahedi said.

Reasons for discontinuation were presented in the other observational study, which included 333 adult patients with RA from two centers in Ontario. The discontinuation rate for adverse events was approximately 20% in both groups (HR, 1.0005; P = .98). However, the discontinuation rate for lack of efficacy favored the JAKi, reaching statistical significance.
 

TNFi failure for lack of efficacy is higher

“For lack of efficacy, the discontinuation rate was about 35% lower on the JAKi [HR, 0.6543; P = .029],” Mr. Iskander reported. Relative to those taking a TNFi, those on a JAKi demonstrated “greater durability regardless of gender, age, disease duration, and prior lines of therapy.”

In a population of patients who have not achieved an adequate response to conventional synthetic DMARDs (csDMARDs), which describes the study population from the two Ontario centers, JAKi “may be considered as a preferable method of treatment,” Mr. Iskander said.

Pointing out that many clinicians have interpreted the boxed warning as a relative contraindication for use of JAKi as first-line therapy in patients with an inadequate response to csDMARDs, Marinka Twilt, MD, PhD, the moderator of the scientific session where these data were presented, questioned the conclusion. In the boxed warning, clinicians and patients are advised to consider an increased risk of serious infections, malignancy, and cardiovascular-related mortality in individuals older than 50 years.

In response, Mr. Iskander said that the data were collected and analyzed prior to the change in labeling. He acknowledged that this study was not designed to capture long-term risks, such as cardiovascular disease or malignancy. In this analysis, the safety and tolerability of JAKi and bDMARDs appeared comparable.
 

NEJM published study leading to boxed warning

Just a week prior to the CRA annual meeting, the New England Journal of Medicine published an FDA-mandated postmarketing trial of tofacitinib that was used by the agency to justify the boxed warning for JAKi with indications for artitis and other inflammatory diseases. In that open-label trial, more than 4,000 patients aged 50 years or older with at least one additional cardiovascular risk factor were randomized to 5 mg tofacitinib twice daily, 10 mg tofacitinib twice daily, or a TNFi (adalimumab or etanercept).

The efficacy of the therapies was similar, but tofacitinib failed to meet predefined noninferiority criteria for the co–primary endpoints of MACE or cancer (excluding nonmelanoma skin cancer). For tofacitinib relative to TNFi, the hazard ratio was 1.33 for MACE and 1.48 for cancers. The JAKi was also associated with higher incidences of opportunistic infections.

Mr. Iskander noted that Canadian clinical practice guidelines currently identify JAKi as a reasonable first-line alternative to bDMARDs after inadequate response to csDMARDs. While his data support that position, Dr. Twilt indicated that the benefit-to-risk ratio of JAKi might need recalculation based on the data that led the FDA to issue its boxed warning. She questioned whether the language regarding the relative role of JAKi and bDMARDs will change in coming RA guideline revisions.

Dr. Iskander reported no potential conflicts of interest. Dr. Movahedi did not list any personal conflicts of interest but acknowledged that OBRI received unrestricted grants from a variety of pharmaceutical companies, including those that manufacture bDMARDs and JAKi. Dr. Twilt reported no potential conflicts of interest.

Hundreds of Native American tribes have tentatively settled in what one of the lead attorneys describes as “an epic deal”: The top 3 pharmaceutical distributors in the US and Johnson & Johnson have agreed to pay $665 million for deceptive marketing practices and overdistribution of opioids. Native Americans were among those hardest hit by the opioid epidemic. Between 2006 and 2014, Native Americans were nearly 50% more likely than non-Natives to die of an opioid overdose. In 2014, they ranked number 1 for death by opioid overdose.

Overprescribing was rampant. In some areas, such as southwestern Virginia, eastern Kentucky, and Alabama, prescriptions were 5 to 6 times higher than the national average. The overprescribing was largely due to massive and aggressive billion-dollar marketing campaigns, which misrepresented the safety of opioid medications. Purdue Pharma, for instance, trained sales representatives to claim that the risk of addiction was “less than 1 percent.” In an interview with Smithsonian Magazine, Caleb Alexander, MD, codirector of Johns Hopkins’ Center for Drug Safety and Effectiveness, said, “When I was in residency training, we were taught that one needn’t worry about the addictive potential of opioids if a patient had true pain.” He said it was no accident that physicians were cultivated to overestimate the effectiveness for chronic, noncancer pain while underestimating the risks.

Native Americans were not only in the target group for prescriptions, but also apparently singularly targeted. “We were preyed upon,” said Chickasaw Nation Governor Bill Anoatubby in the Washington Post. “It was unconscionable.” A Washington Post analysis found that, between 2006 and 2014, opioid distributors shipped an average of 36 pills per person in the US. States in the so-called opioid belt (mostly Southern states), received an average of 60 to 66 pills per person. The distributors shipped 57 pills per person to Oklahoma, home to nearly 322,000 Native Americans. (The opioid death rate for Native Americans in Oklahoma from 2006 to 2014 was more than triple the nationwide rate for non-Natives.) In South Dakota as recently as 2015, enough opioids were prescribed to medicate every adult around-the-clock for 19 consecutive days. Native Americans comprise 9% of South Dakota’s population; however, almost 30% of the patients are being treated for opioid use disorder.

In the settlement, which is a first for tribes, McKesson, Cardinal Health, and AmerisourceBergen would pay $515 million over 7 years. Johnson & Johnson would contribute $150 million in 2 years to the federally recognized tribes. “This settlement is a real turning point in history,” said Lloyd Miller, one of the attorneys representing one-third of the litigating tribes.

But the money is still small compensation for ravaging millions of lives. “Flooding the Native community with Western medicine—sedating a population rather than seeking to understand its needs and challenges—is not an acceptable means of handling its trauma,” the Lakota People’s Law Project says in an article on its website. Thus, the money dispersal will be overseen by a panel of tribal health experts, to go toward programs that aid drug users and their communities.

The funds will be managed in a way that will consider the long-term damage, Native American leaders vow. Children, for instance, have not been exempt from the sequelae of the overprescribing. Foster care systems are “overrun” with children of addicted parents, the Law Project says, and the children are placed in homes outside the tribe. “In the long run, this has the potential to curtail tribal membership, break down familial lines, and degrade cultural values.”

Dealing with the problem has drained tribal resources—doubly strained by the COVID-19 epidemic. Chairman Douglas Yankton, of the Spirit Lake Nation in North Dakota, said in a statement, “The dollars that will flow to Tribes under this initial settlement will help fund crucial, on-reservation, culturally appropriate opioid treatment services.”

However, Chairman Kristopher Peters, of the Squaxin Island Tribe in Washington State, told the Washington Post, “There is no amount of money that’s going to solve the generational issues that have been created from this. Our hope is that we can use these funds to help revitalize our culture and help heal our people.”

Johnson & Johnson says it no longer sells prescription opioids in the US

Hundreds of Native American tribes have tentatively settled in what one of the lead attorneys describes as “an epic deal”: The top 3 pharmaceutical distributors in the US and Johnson & Johnson have agreed to pay $665 million for deceptive marketing practices and overdistribution of opioids. Native Americans were among those hardest hit by the opioid epidemic. Between 2006 and 2014, Native Americans were nearly 50% more likely than non-Natives to die of an opioid overdose. In 2014, they ranked number 1 for death by opioid overdose.

Overprescribing was rampant. In some areas, such as southwestern Virginia, eastern Kentucky, and Alabama, prescriptions were 5 to 6 times higher than the national average. The overprescribing was largely due to massive and aggressive billion-dollar marketing campaigns, which misrepresented the safety of opioid medications. Purdue Pharma, for instance, trained sales representatives to claim that the risk of addiction was “less than 1 percent.” In an interview with Smithsonian Magazine, Caleb Alexander, MD, codirector of Johns Hopkins’ Center for Drug Safety and Effectiveness, said, “When I was in residency training, we were taught that one needn’t worry about the addictive potential of opioids if a patient had true pain.” He said it was no accident that physicians were cultivated to overestimate the effectiveness for chronic, noncancer pain while underestimating the risks.

Native Americans were not only in the target group for prescriptions, but also apparently singularly targeted. “We were preyed upon,” said Chickasaw Nation Governor Bill Anoatubby in the Washington Post. “It was unconscionable.” A Washington Post analysis found that, between 2006 and 2014, opioid distributors shipped an average of 36 pills per person in the US. States in the so-called opioid belt (mostly Southern states), received an average of 60 to 66 pills per person. The distributors shipped 57 pills per person to Oklahoma, home to nearly 322,000 Native Americans. (The opioid death rate for Native Americans in Oklahoma from 2006 to 2014 was more than triple the nationwide rate for non-Natives.) In South Dakota as recently as 2015, enough opioids were prescribed to medicate every adult around-the-clock for 19 consecutive days. Native Americans comprise 9% of South Dakota’s population; however, almost 30% of the patients are being treated for opioid use disorder.

In the settlement, which is a first for tribes, McKesson, Cardinal Health, and AmerisourceBergen would pay $515 million over 7 years. Johnson & Johnson would contribute $150 million in 2 years to the federally recognized tribes. “This settlement is a real turning point in history,” said Lloyd Miller, one of the attorneys representing one-third of the litigating tribes.

But the money is still small compensation for ravaging millions of lives. “Flooding the Native community with Western medicine—sedating a population rather than seeking to understand its needs and challenges—is not an acceptable means of handling its trauma,” the Lakota People’s Law Project says in an article on its website. Thus, the money dispersal will be overseen by a panel of tribal health experts, to go toward programs that aid drug users and their communities.

The funds will be managed in a way that will consider the long-term damage, Native American leaders vow. Children, for instance, have not been exempt from the sequelae of the overprescribing. Foster care systems are “overrun” with children of addicted parents, the Law Project says, and the children are placed in homes outside the tribe. “In the long run, this has the potential to curtail tribal membership, break down familial lines, and degrade cultural values.”

Dealing with the problem has drained tribal resources—doubly strained by the COVID-19 epidemic. Chairman Douglas Yankton, of the Spirit Lake Nation in North Dakota, said in a statement, “The dollars that will flow to Tribes under this initial settlement will help fund crucial, on-reservation, culturally appropriate opioid treatment services.”

However, Chairman Kristopher Peters, of the Squaxin Island Tribe in Washington State, told the Washington Post, “There is no amount of money that’s going to solve the generational issues that have been created from this. Our hope is that we can use these funds to help revitalize our culture and help heal our people.”

Johnson & Johnson says it no longer sells prescription opioids in the US

Hundreds of Native American tribes have tentatively settled in what one of the lead attorneys describes as “an epic deal”: The top 3 pharmaceutical distributors in the US and Johnson & Johnson have agreed to pay $665 million for deceptive marketing practices and overdistribution of opioids. Native Americans were among those hardest hit by the opioid epidemic. Between 2006 and 2014, Native Americans were nearly 50% more likely than non-Natives to die of an opioid overdose. In 2014, they ranked number 1 for death by opioid overdose.

Overprescribing was rampant. In some areas, such as southwestern Virginia, eastern Kentucky, and Alabama, prescriptions were 5 to 6 times higher than the national average. The overprescribing was largely due to massive and aggressive billion-dollar marketing campaigns, which misrepresented the safety of opioid medications. Purdue Pharma, for instance, trained sales representatives to claim that the risk of addiction was “less than 1 percent.” In an interview with Smithsonian Magazine, Caleb Alexander, MD, codirector of Johns Hopkins’ Center for Drug Safety and Effectiveness, said, “When I was in residency training, we were taught that one needn’t worry about the addictive potential of opioids if a patient had true pain.” He said it was no accident that physicians were cultivated to overestimate the effectiveness for chronic, noncancer pain while underestimating the risks.

Native Americans were not only in the target group for prescriptions, but also apparently singularly targeted. “We were preyed upon,” said Chickasaw Nation Governor Bill Anoatubby in the Washington Post. “It was unconscionable.” A Washington Post analysis found that, between 2006 and 2014, opioid distributors shipped an average of 36 pills per person in the US. States in the so-called opioid belt (mostly Southern states), received an average of 60 to 66 pills per person. The distributors shipped 57 pills per person to Oklahoma, home to nearly 322,000 Native Americans. (The opioid death rate for Native Americans in Oklahoma from 2006 to 2014 was more than triple the nationwide rate for non-Natives.) In South Dakota as recently as 2015, enough opioids were prescribed to medicate every adult around-the-clock for 19 consecutive days. Native Americans comprise 9% of South Dakota’s population; however, almost 30% of the patients are being treated for opioid use disorder.

In the settlement, which is a first for tribes, McKesson, Cardinal Health, and AmerisourceBergen would pay $515 million over 7 years. Johnson & Johnson would contribute $150 million in 2 years to the federally recognized tribes. “This settlement is a real turning point in history,” said Lloyd Miller, one of the attorneys representing one-third of the litigating tribes.

But the money is still small compensation for ravaging millions of lives. “Flooding the Native community with Western medicine—sedating a population rather than seeking to understand its needs and challenges—is not an acceptable means of handling its trauma,” the Lakota People’s Law Project says in an article on its website. Thus, the money dispersal will be overseen by a panel of tribal health experts, to go toward programs that aid drug users and their communities.

The funds will be managed in a way that will consider the long-term damage, Native American leaders vow. Children, for instance, have not been exempt from the sequelae of the overprescribing. Foster care systems are “overrun” with children of addicted parents, the Law Project says, and the children are placed in homes outside the tribe. “In the long run, this has the potential to curtail tribal membership, break down familial lines, and degrade cultural values.”

Dealing with the problem has drained tribal resources—doubly strained by the COVID-19 epidemic. Chairman Douglas Yankton, of the Spirit Lake Nation in North Dakota, said in a statement, “The dollars that will flow to Tribes under this initial settlement will help fund crucial, on-reservation, culturally appropriate opioid treatment services.”

However, Chairman Kristopher Peters, of the Squaxin Island Tribe in Washington State, told the Washington Post, “There is no amount of money that’s going to solve the generational issues that have been created from this. Our hope is that we can use these funds to help revitalize our culture and help heal our people.”

Johnson & Johnson says it no longer sells prescription opioids in the US

Two illicit drugs are contributing to a sharp rise in fentanyl-related deaths, a new study from the Centers for Disease Control and Prevention shows.

Para-fluorofentanyl, a schedule I substance often found in heroin packets and counterfeit pills, is making a comeback on the illicit drug market, Jordan Trecki, PhD, and associates reported in the Centers for Disease Control and Prevention’s Morbidity and Mortality Weekly Report (2022 Jan 28;71[4]:153-5). U.S. medical examiner reports and national law enforcement seizure data point to a rise in encounters of this drug along with metonitazene, a benzimidazole-opioid, in combination with fentanyl.

On their own, para-fluorofentanyl and metonitazene can kill the user through respiratory depression. Combinations of these substances and other opioids, including fentanyl-related compounds or adulterants, “pose an even greater potential harm to the patient than previously observed,” reported Dr. Trecki, a pharmacologist affiliated with the Drug Enforcement Administration, and colleagues.

Opioids contribute to about 75% of all U.S. drug overdose deaths, which rose by 28.5% during 2020-2021, according to the National Center for Health Statistics. And fentanyl is replacing heroin as the primary drug of use, said addiction specialist Brian Fuehrlein, MD, PhD, in an interview.

“For patients with stimulant use disorder and even cannabis use disorder, fentanyl is becoming more and more common as an adulterant in those substances, often resulting in inadvertent use. Hence, fentanyl and fentanyl-like drugs and fentanyl analogues are becoming increasingly common and important,” said Dr. Fuehrlein, director of the psychiatric emergency room at the VA Connecticut Healthcare System. He was not involved with the MMWR study.
 

Tennessee data reflect national problem

Recent data from a medical examiner in Knoxville, Tenn., illustrate what might be happening nationwide with those two emerging substances.

Over the last 2 years, the Knox County Regional Forensic Center has identified para-fluorofentanyl in the toxicology results of drug overdose victims, and metonitazene – either on its own or in combination with fentanyl and para-fluorofentanyl. Fentanyl appeared in 562 or 73% of 770 unintentional drug overdose deaths from November 2020 to August 2021. Forty-eight of these cases involved para-fluorofentanyl, and 26 involved metonitazene.

“Although the percentage of law enforcement encounters with these substances in Tennessee decreased relative to the national total percentage within this time frame, the increase in encounters both within Tennessee and nationally reflect an increased distribution of para-fluorofentanyl and metonitazene throughout the United States,” the authors reported.
 

How to identify substances, manage overdoses

The authors encouraged physicians, labs, and medical examiners to be on the lookout for these two substances either in the emergency department or when identifying the cause of drug overdose deaths.

They also advised that stronger opioids, such as fentanyl, para-fluorofentanyl, metonitazene, or other benzimidazoles may warrant additional doses of the opioid-reversal drug naloxone.

While he hasn’t personally seen any of these drugs in his practice, “I would assume that these are on the rise due to inexpensive cost to manufacture and potency of effect,” said Dr. Fuehrlein, also an associate professor of psychiatry at Yale University, New Haven, Conn.

The need for additional naloxone to manage acute overdoses is a key takeaway of the MMWR paper, he added. Clinicians should also educate patients about harm reduction strategies to avoid overdose death when using potentially powerful and unknown drugs. “Things like start low and go slow, buy from the same supplier, do not use opioids with alcohol or benzos, have Narcan available, do not use alone, etc.”

Dr. Fuehrlein had no disclosures.

Two illicit drugs are contributing to a sharp rise in fentanyl-related deaths, a new study from the Centers for Disease Control and Prevention shows.

Para-fluorofentanyl, a schedule I substance often found in heroin packets and counterfeit pills, is making a comeback on the illicit drug market, Jordan Trecki, PhD, and associates reported in the Centers for Disease Control and Prevention’s Morbidity and Mortality Weekly Report (2022 Jan 28;71[4]:153-5). U.S. medical examiner reports and national law enforcement seizure data point to a rise in encounters of this drug along with metonitazene, a benzimidazole-opioid, in combination with fentanyl.

On their own, para-fluorofentanyl and metonitazene can kill the user through respiratory depression. Combinations of these substances and other opioids, including fentanyl-related compounds or adulterants, “pose an even greater potential harm to the patient than previously observed,” reported Dr. Trecki, a pharmacologist affiliated with the Drug Enforcement Administration, and colleagues.

Opioids contribute to about 75% of all U.S. drug overdose deaths, which rose by 28.5% during 2020-2021, according to the National Center for Health Statistics. And fentanyl is replacing heroin as the primary drug of use, said addiction specialist Brian Fuehrlein, MD, PhD, in an interview.

“For patients with stimulant use disorder and even cannabis use disorder, fentanyl is becoming more and more common as an adulterant in those substances, often resulting in inadvertent use. Hence, fentanyl and fentanyl-like drugs and fentanyl analogues are becoming increasingly common and important,” said Dr. Fuehrlein, director of the psychiatric emergency room at the VA Connecticut Healthcare System. He was not involved with the MMWR study.
 

Tennessee data reflect national problem

Recent data from a medical examiner in Knoxville, Tenn., illustrate what might be happening nationwide with those two emerging substances.

Over the last 2 years, the Knox County Regional Forensic Center has identified para-fluorofentanyl in the toxicology results of drug overdose victims, and metonitazene – either on its own or in combination with fentanyl and para-fluorofentanyl. Fentanyl appeared in 562 or 73% of 770 unintentional drug overdose deaths from November 2020 to August 2021. Forty-eight of these cases involved para-fluorofentanyl, and 26 involved metonitazene.

“Although the percentage of law enforcement encounters with these substances in Tennessee decreased relative to the national total percentage within this time frame, the increase in encounters both within Tennessee and nationally reflect an increased distribution of para-fluorofentanyl and metonitazene throughout the United States,” the authors reported.
 

How to identify substances, manage overdoses

The authors encouraged physicians, labs, and medical examiners to be on the lookout for these two substances either in the emergency department or when identifying the cause of drug overdose deaths.

They also advised that stronger opioids, such as fentanyl, para-fluorofentanyl, metonitazene, or other benzimidazoles may warrant additional doses of the opioid-reversal drug naloxone.

While he hasn’t personally seen any of these drugs in his practice, “I would assume that these are on the rise due to inexpensive cost to manufacture and potency of effect,” said Dr. Fuehrlein, also an associate professor of psychiatry at Yale University, New Haven, Conn.

The need for additional naloxone to manage acute overdoses is a key takeaway of the MMWR paper, he added. Clinicians should also educate patients about harm reduction strategies to avoid overdose death when using potentially powerful and unknown drugs. “Things like start low and go slow, buy from the same supplier, do not use opioids with alcohol or benzos, have Narcan available, do not use alone, etc.”

Dr. Fuehrlein had no disclosures.

Two illicit drugs are contributing to a sharp rise in fentanyl-related deaths, a new study from the Centers for Disease Control and Prevention shows.

Para-fluorofentanyl, a schedule I substance often found in heroin packets and counterfeit pills, is making a comeback on the illicit drug market, Jordan Trecki, PhD, and associates reported in the Centers for Disease Control and Prevention’s Morbidity and Mortality Weekly Report (2022 Jan 28;71[4]:153-5). U.S. medical examiner reports and national law enforcement seizure data point to a rise in encounters of this drug along with metonitazene, a benzimidazole-opioid, in combination with fentanyl.

On their own, para-fluorofentanyl and metonitazene can kill the user through respiratory depression. Combinations of these substances and other opioids, including fentanyl-related compounds or adulterants, “pose an even greater potential harm to the patient than previously observed,” reported Dr. Trecki, a pharmacologist affiliated with the Drug Enforcement Administration, and colleagues.

Opioids contribute to about 75% of all U.S. drug overdose deaths, which rose by 28.5% during 2020-2021, according to the National Center for Health Statistics. And fentanyl is replacing heroin as the primary drug of use, said addiction specialist Brian Fuehrlein, MD, PhD, in an interview.

“For patients with stimulant use disorder and even cannabis use disorder, fentanyl is becoming more and more common as an adulterant in those substances, often resulting in inadvertent use. Hence, fentanyl and fentanyl-like drugs and fentanyl analogues are becoming increasingly common and important,” said Dr. Fuehrlein, director of the psychiatric emergency room at the VA Connecticut Healthcare System. He was not involved with the MMWR study.
 

Tennessee data reflect national problem

Recent data from a medical examiner in Knoxville, Tenn., illustrate what might be happening nationwide with those two emerging substances.

Over the last 2 years, the Knox County Regional Forensic Center has identified para-fluorofentanyl in the toxicology results of drug overdose victims, and metonitazene – either on its own or in combination with fentanyl and para-fluorofentanyl. Fentanyl appeared in 562 or 73% of 770 unintentional drug overdose deaths from November 2020 to August 2021. Forty-eight of these cases involved para-fluorofentanyl, and 26 involved metonitazene.

“Although the percentage of law enforcement encounters with these substances in Tennessee decreased relative to the national total percentage within this time frame, the increase in encounters both within Tennessee and nationally reflect an increased distribution of para-fluorofentanyl and metonitazene throughout the United States,” the authors reported.
 

How to identify substances, manage overdoses

The authors encouraged physicians, labs, and medical examiners to be on the lookout for these two substances either in the emergency department or when identifying the cause of drug overdose deaths.

They also advised that stronger opioids, such as fentanyl, para-fluorofentanyl, metonitazene, or other benzimidazoles may warrant additional doses of the opioid-reversal drug naloxone.

While he hasn’t personally seen any of these drugs in his practice, “I would assume that these are on the rise due to inexpensive cost to manufacture and potency of effect,” said Dr. Fuehrlein, also an associate professor of psychiatry at Yale University, New Haven, Conn.

The need for additional naloxone to manage acute overdoses is a key takeaway of the MMWR paper, he added. Clinicians should also educate patients about harm reduction strategies to avoid overdose death when using potentially powerful and unknown drugs. “Things like start low and go slow, buy from the same supplier, do not use opioids with alcohol or benzos, have Narcan available, do not use alone, etc.”

Dr. Fuehrlein had no disclosures.

Samples from patients in the United States and Kenya show an increasing emergence of previously undetected vancomycin-resistant strains of Clostridioides difficile, sparking concern as recurrences in the treatment of C. difficile infection (CDI) continue to rise.

“Our results may help explain a decreasing effectiveness of antibiotic-based therapy in C. difficile infection, since a significant proportion of patients harboring strains with reduced susceptibility to vancomycin may not respond to treatment,” reported the authors in research published recently in Clinical Infectious Diseases.

The spread of the resistant strains “has serious public health implications, underscoring an urgent need for a comprehensive analysis of the circulating strains to help inform clinical decisions,” they added.

Commenting on the findings, Cornelius J. Clancy, MD, professor of medicine at the University of Pittsburgh, and chief of infectious diseases at the Veterans Affairs Pittsburgh Healthcare System, echoed the concern.

“The casual belief has been that [C. difficile] strains at most centers can be assumed to be vancomycin susceptible,” he told this news organization. “This study shows that this assumption can no longer be taken as a given.”

Dr. Clancy, who was not involved with this research, noted that “based on this study, there might be need for the Infectious Diseases Society of America and other organizations to offer guidance on generating good, quality surveillance data for C. difficile resistance.”

With C. difficile showing the ability to resist multiple antibiotics, drugs in the armamentarium to treat the infection have declined in recent years, and recurrences with the infection are reported in up to 25% of cases.

Oral vancomycin is recommended as the antibiotic of choice by the IDSA and the Society for Healthcare Epidemiology of America for severe as well as nonsevere cases of CDI, and although there are reports of nine vancomycin-resistant gene clusters, most involve Enterococcus.

To take a closer look at the prevalence of vancomycin-resistant C. difficile strains, first author Charles Darkoh, PhD, with the Center for Infectious Diseases at the University of Texas Health Science Center, Houston, and colleagues analyzed stool samples from patients with CDI, including 438 patients in Houston, taken between 2012 and 2017, and 98 in Nairobi, Kenya, taken in 2017.

They found that, among samples from patients in Houston, over the time period, 26% showed vancomycin nonsusceptible C. difficile isolates and 29% had isolates that were metronidazole resistant.

And among samples from the Nairobi patients, 67% harbored vancomycin-resistant isolates and 85% had isolates resistant to metronidazole.

Of note, the proportion of samples containing vancomycin-resistant C. difficile in the Houston patients showed a marked increase over time, from «complete absence» in 2012 to approximately 35% in 2017, the authors reported.

“These nonsusceptibility rates significantly exceeded prior reports from other studies conducted in the United States and Europe from 2011 to 2014, suggesting a lower percentage of resistance to both metronidazole and vancomycin,” the authors wrote.

Further experiments on mouse models infected with one of the vancomycin-resistant isolates showed that treatment with vancomycin failed to eradicate the infection, and 5-day survival was significantly lower after vancomycin treatment in those mice (25%) versus those infected with strains known to be vancomycin sensitive (50%).
 

Unrecognized genetic strains

Whole-genome sequencing of 10 of the resistant isolates showed no matches with gene clusters that have been previously recognized as being vancomycin resistant, suggesting the emergence of new clusters.

“Together, these results suggest unknown genetic elements associated with vancomycin nonsusceptibility in isolates circulating in the patient population,” the authors wrote.

Dr. Darkoh told this news organization that the research team is currently working to further investigate the patterns and mechanisms.

“We are currently working on a follow-up study for the next 5 years to find out how widespread this is,” he said. “We want to make sure it’s not necessarily just occurring in the settings we studied, and we also need to establish the mechanism of resistance.”

Further commenting on the results, Dr. Clancy noted that “the extent of resistance caught many in the field a bit off guard, as they are higher than previously reported.”

“The data are also concerning because most centers do not routinely test C. difficile for drug susceptibility.”

Dr. Clancy noted that “another immediately pressing need is to understand mechanisms of resistance. It was quite striking that vancomycin-resistant strains in this study did not carry vanA genes, pointing to previously unrecognized mechanisms of resistance.”

“As is often the case, antibiotic overuse was likely a factor in the resistances, with overtesting often leading to overtreatment of C. difficile,” Dr. Clancy said. “The situation may have been compounded by failure to appreciate how entrenched C. difficile resistance may be at certain hospitals, since widespread susceptibility testing is generally not routinely performed.”

As alternative treatments, Dr. Clancy pointed to the recent IDSA update, which included a stronger endorsement of fidaxomicin.

“Of course, there is also the need to assure that data on resistance to agents like fidaxomicin are generated going forward,” he noted.

The study was supported by was supported by National Institutes of Health, the National Institute of Allergy and Infectious Diseases, the Texas Medical Center Digestive Diseases Center, and the University of Texas Health Science Center. Dr. Darkoh has disclosed no relevant financial relationships. One coauthor received grant support from Merck, Entasis Pharmaceuticals, and MeMed Diagnostics. Dr. Clancy disclosed advisory board, consulting and/or research relationships with Merck, Qpex Biopharma, Shionogi, Astellas, Cidara, Scynexis, and Needham & Associates.

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

Samples from patients in the United States and Kenya show an increasing emergence of previously undetected vancomycin-resistant strains of Clostridioides difficile, sparking concern as recurrences in the treatment of C. difficile infection (CDI) continue to rise.

“Our results may help explain a decreasing effectiveness of antibiotic-based therapy in C. difficile infection, since a significant proportion of patients harboring strains with reduced susceptibility to vancomycin may not respond to treatment,” reported the authors in research published recently in Clinical Infectious Diseases.

The spread of the resistant strains “has serious public health implications, underscoring an urgent need for a comprehensive analysis of the circulating strains to help inform clinical decisions,” they added.

Commenting on the findings, Cornelius J. Clancy, MD, professor of medicine at the University of Pittsburgh, and chief of infectious diseases at the Veterans Affairs Pittsburgh Healthcare System, echoed the concern.

“The casual belief has been that [C. difficile] strains at most centers can be assumed to be vancomycin susceptible,” he told this news organization. “This study shows that this assumption can no longer be taken as a given.”

Dr. Clancy, who was not involved with this research, noted that “based on this study, there might be need for the Infectious Diseases Society of America and other organizations to offer guidance on generating good, quality surveillance data for C. difficile resistance.”

With C. difficile showing the ability to resist multiple antibiotics, drugs in the armamentarium to treat the infection have declined in recent years, and recurrences with the infection are reported in up to 25% of cases.

Oral vancomycin is recommended as the antibiotic of choice by the IDSA and the Society for Healthcare Epidemiology of America for severe as well as nonsevere cases of CDI, and although there are reports of nine vancomycin-resistant gene clusters, most involve Enterococcus.

To take a closer look at the prevalence of vancomycin-resistant C. difficile strains, first author Charles Darkoh, PhD, with the Center for Infectious Diseases at the University of Texas Health Science Center, Houston, and colleagues analyzed stool samples from patients with CDI, including 438 patients in Houston, taken between 2012 and 2017, and 98 in Nairobi, Kenya, taken in 2017.

They found that, among samples from patients in Houston, over the time period, 26% showed vancomycin nonsusceptible C. difficile isolates and 29% had isolates that were metronidazole resistant.

And among samples from the Nairobi patients, 67% harbored vancomycin-resistant isolates and 85% had isolates resistant to metronidazole.

Of note, the proportion of samples containing vancomycin-resistant C. difficile in the Houston patients showed a marked increase over time, from «complete absence» in 2012 to approximately 35% in 2017, the authors reported.

“These nonsusceptibility rates significantly exceeded prior reports from other studies conducted in the United States and Europe from 2011 to 2014, suggesting a lower percentage of resistance to both metronidazole and vancomycin,” the authors wrote.

Further experiments on mouse models infected with one of the vancomycin-resistant isolates showed that treatment with vancomycin failed to eradicate the infection, and 5-day survival was significantly lower after vancomycin treatment in those mice (25%) versus those infected with strains known to be vancomycin sensitive (50%).
 

Unrecognized genetic strains

Whole-genome sequencing of 10 of the resistant isolates showed no matches with gene clusters that have been previously recognized as being vancomycin resistant, suggesting the emergence of new clusters.

“Together, these results suggest unknown genetic elements associated with vancomycin nonsusceptibility in isolates circulating in the patient population,” the authors wrote.

Dr. Darkoh told this news organization that the research team is currently working to further investigate the patterns and mechanisms.

“We are currently working on a follow-up study for the next 5 years to find out how widespread this is,” he said. “We want to make sure it’s not necessarily just occurring in the settings we studied, and we also need to establish the mechanism of resistance.”

Further commenting on the results, Dr. Clancy noted that “the extent of resistance caught many in the field a bit off guard, as they are higher than previously reported.”

“The data are also concerning because most centers do not routinely test C. difficile for drug susceptibility.”

Dr. Clancy noted that “another immediately pressing need is to understand mechanisms of resistance. It was quite striking that vancomycin-resistant strains in this study did not carry vanA genes, pointing to previously unrecognized mechanisms of resistance.”

“As is often the case, antibiotic overuse was likely a factor in the resistances, with overtesting often leading to overtreatment of C. difficile,” Dr. Clancy said. “The situation may have been compounded by failure to appreciate how entrenched C. difficile resistance may be at certain hospitals, since widespread susceptibility testing is generally not routinely performed.”

As alternative treatments, Dr. Clancy pointed to the recent IDSA update, which included a stronger endorsement of fidaxomicin.

“Of course, there is also the need to assure that data on resistance to agents like fidaxomicin are generated going forward,” he noted.

The study was supported by was supported by National Institutes of Health, the National Institute of Allergy and Infectious Diseases, the Texas Medical Center Digestive Diseases Center, and the University of Texas Health Science Center. Dr. Darkoh has disclosed no relevant financial relationships. One coauthor received grant support from Merck, Entasis Pharmaceuticals, and MeMed Diagnostics. Dr. Clancy disclosed advisory board, consulting and/or research relationships with Merck, Qpex Biopharma, Shionogi, Astellas, Cidara, Scynexis, and Needham & Associates.

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

Samples from patients in the United States and Kenya show an increasing emergence of previously undetected vancomycin-resistant strains of Clostridioides difficile, sparking concern as recurrences in the treatment of C. difficile infection (CDI) continue to rise.

“Our results may help explain a decreasing effectiveness of antibiotic-based therapy in C. difficile infection, since a significant proportion of patients harboring strains with reduced susceptibility to vancomycin may not respond to treatment,” reported the authors in research published recently in Clinical Infectious Diseases.

The spread of the resistant strains “has serious public health implications, underscoring an urgent need for a comprehensive analysis of the circulating strains to help inform clinical decisions,” they added.

Commenting on the findings, Cornelius J. Clancy, MD, professor of medicine at the University of Pittsburgh, and chief of infectious diseases at the Veterans Affairs Pittsburgh Healthcare System, echoed the concern.

“The casual belief has been that [C. difficile] strains at most centers can be assumed to be vancomycin susceptible,” he told this news organization. “This study shows that this assumption can no longer be taken as a given.”

Dr. Clancy, who was not involved with this research, noted that “based on this study, there might be need for the Infectious Diseases Society of America and other organizations to offer guidance on generating good, quality surveillance data for C. difficile resistance.”

With C. difficile showing the ability to resist multiple antibiotics, drugs in the armamentarium to treat the infection have declined in recent years, and recurrences with the infection are reported in up to 25% of cases.

Oral vancomycin is recommended as the antibiotic of choice by the IDSA and the Society for Healthcare Epidemiology of America for severe as well as nonsevere cases of CDI, and although there are reports of nine vancomycin-resistant gene clusters, most involve Enterococcus.

To take a closer look at the prevalence of vancomycin-resistant C. difficile strains, first author Charles Darkoh, PhD, with the Center for Infectious Diseases at the University of Texas Health Science Center, Houston, and colleagues analyzed stool samples from patients with CDI, including 438 patients in Houston, taken between 2012 and 2017, and 98 in Nairobi, Kenya, taken in 2017.

They found that, among samples from patients in Houston, over the time period, 26% showed vancomycin nonsusceptible C. difficile isolates and 29% had isolates that were metronidazole resistant.

And among samples from the Nairobi patients, 67% harbored vancomycin-resistant isolates and 85% had isolates resistant to metronidazole.

Of note, the proportion of samples containing vancomycin-resistant C. difficile in the Houston patients showed a marked increase over time, from «complete absence» in 2012 to approximately 35% in 2017, the authors reported.

“These nonsusceptibility rates significantly exceeded prior reports from other studies conducted in the United States and Europe from 2011 to 2014, suggesting a lower percentage of resistance to both metronidazole and vancomycin,” the authors wrote.

Further experiments on mouse models infected with one of the vancomycin-resistant isolates showed that treatment with vancomycin failed to eradicate the infection, and 5-day survival was significantly lower after vancomycin treatment in those mice (25%) versus those infected with strains known to be vancomycin sensitive (50%).
 

Unrecognized genetic strains

Whole-genome sequencing of 10 of the resistant isolates showed no matches with gene clusters that have been previously recognized as being vancomycin resistant, suggesting the emergence of new clusters.

“Together, these results suggest unknown genetic elements associated with vancomycin nonsusceptibility in isolates circulating in the patient population,” the authors wrote.

Dr. Darkoh told this news organization that the research team is currently working to further investigate the patterns and mechanisms.

“We are currently working on a follow-up study for the next 5 years to find out how widespread this is,” he said. “We want to make sure it’s not necessarily just occurring in the settings we studied, and we also need to establish the mechanism of resistance.”

Further commenting on the results, Dr. Clancy noted that “the extent of resistance caught many in the field a bit off guard, as they are higher than previously reported.”

“The data are also concerning because most centers do not routinely test C. difficile for drug susceptibility.”

Dr. Clancy noted that “another immediately pressing need is to understand mechanisms of resistance. It was quite striking that vancomycin-resistant strains in this study did not carry vanA genes, pointing to previously unrecognized mechanisms of resistance.”

“As is often the case, antibiotic overuse was likely a factor in the resistances, with overtesting often leading to overtreatment of C. difficile,” Dr. Clancy said. “The situation may have been compounded by failure to appreciate how entrenched C. difficile resistance may be at certain hospitals, since widespread susceptibility testing is generally not routinely performed.”

As alternative treatments, Dr. Clancy pointed to the recent IDSA update, which included a stronger endorsement of fidaxomicin.

“Of course, there is also the need to assure that data on resistance to agents like fidaxomicin are generated going forward,” he noted.

The study was supported by was supported by National Institutes of Health, the National Institute of Allergy and Infectious Diseases, the Texas Medical Center Digestive Diseases Center, and the University of Texas Health Science Center. Dr. Darkoh has disclosed no relevant financial relationships. One coauthor received grant support from Merck, Entasis Pharmaceuticals, and MeMed Diagnostics. Dr. Clancy disclosed advisory board, consulting and/or research relationships with Merck, Qpex Biopharma, Shionogi, Astellas, Cidara, Scynexis, and Needham & Associates.

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

A new drug has become the first and only treatment for people with cold agglutinin disease (CAD) that is approved by the U.S. Food and Drug Administration.

CAD is a rare autoimmune hemolytic anemia, affecting about 5,000 people in the United States. It is caused by antibodies binding to the surface of red blood cells, which starts a process that causes the body’s immune system to mistakenly attack healthy red blood cells and cause their rupture (hemolysis). This can lead to severe anemia, which is often treated by blood transfusions.

The new product is sutimlimab-jome (Enjaymo), and it works by inhibiting the destruction of red blood cells and so decreases the need for blood transfusions.

“For people living with cold agglutinin disease, it is as if their body’s immune system is waging a war on itself. The relentless destruction of healthy red blood cells is a daily, silent reality for people with CAD. For the first time, we have a treatment that targets complement-mediated hemolysis, which is the underlying cause of the red blood cell destruction in many CAD patients,” commented Catherine Broome, MD, associate professor of medicine at Georgetown University Lombardi Comprehensive Cancer Center, in a company press release.

Dr. Broome was the principal investigator in the CARDINAL study, which was the basis for the new approval. In this pivotal study, patients treated with sutimlimab had an improvement in anemia as measured by hemoglobin (Hgb) and bilirubin levels, she commented in the company statement.

The CARDINAL study was a 26-week open-label, single-arm phase 3 study conducted in 24 patients with CAD who had recent history of blood transfusion.

The primary efficacy endpoint was a composite defined as the proportion of patients who achieved normalization of Hgb level greater than or equal to 12 g/dL or demonstrated an increase from baseline in Hgb level greater than or equal to 2 g/dL at the treatment assessment time point (mean value from weeks 23, 25, and 26) and no blood transfusion from weeks 5 through 26.

More than half of the patients (13 of 24, 54%) met the composite primary endpoint criteria, with 17 of 24 (71%) patients remaining transfusion-free after week 5. Most patients (22 of 24, 92%) did not use other CAD-related treatments.

For the secondary measures on disease process, patients enrolled in the trial experienced a mean increase in Hgb level of 2.29 g/dL at week 3 and 3.18 g/dL at the 26-week treatment assessment time points (increasing from the mean baseline level of 8.6 g/dL). In addition, there was a mean reduction in bilirubin levels (n = 14) of -2.23 mg/dL from a mean baseline level of 3.23 mg/dL.

The most common adverse reactions occurring in 10% or more of patients were respiratory tract infection, viral infection, diarrhea, dyspepsia, cough, arthralgia, arthritis, and peripheral edema. Serious adverse reactions were reported in 3 of 24 (13%) patients, and these included streptococcal sepsis and staphylococcal wound infection (n = 1), arthralgia (n = 1), and respiratory tract infection (n = 1).

None of the adverse reactions led to discontinuation of the drug, the company noted. Dosage interruptions due to an adverse reaction occurred in 4 of 24 (17%) patients who received the drug.

The recommended dose is based on body weight (6,500 mg for people 39-75 kg and 7,500 mg for people greater than 75 kg). The drug is administered intravenously weekly for the first 2 weeks with administration every 2 weeks thereafter.

Full prescribing information is available here.

The product is a humanized monoclonal antibody that is designed to selectively target and inhibit C1s in the classical complement pathway, which is part of the innate immune system. By blocking C1s, Enjaymo inhibits the activation of the complement cascade in the immune system and inhibits C1-activated hemolysis in CAD to prevent the abnormal destruction of healthy red blood cells. Enjaymo does not inhibit the lectin and alternative pathways, the company noted.

In the U.S., Enjaymo received FDA breakthrough therapy and orphan drug designation, as well as priority review. The product is awaiting approval in Europe and Japan.

Sanofi says the product is expected to be available in the United States in the coming weeks, with a list price, or wholesale acquisition cost, of $1,800 per vial. Actual costs to patients are generally anticipated to be lower, as the list price does not reflect insurance coverage, copay support, or financial assistance from patient support programs. The company offers support for eligible patients on 1-833-223-2428.

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

A new drug has become the first and only treatment for people with cold agglutinin disease (CAD) that is approved by the U.S. Food and Drug Administration.

CAD is a rare autoimmune hemolytic anemia, affecting about 5,000 people in the United States. It is caused by antibodies binding to the surface of red blood cells, which starts a process that causes the body’s immune system to mistakenly attack healthy red blood cells and cause their rupture (hemolysis). This can lead to severe anemia, which is often treated by blood transfusions.

The new product is sutimlimab-jome (Enjaymo), and it works by inhibiting the destruction of red blood cells and so decreases the need for blood transfusions.

“For people living with cold agglutinin disease, it is as if their body’s immune system is waging a war on itself. The relentless destruction of healthy red blood cells is a daily, silent reality for people with CAD. For the first time, we have a treatment that targets complement-mediated hemolysis, which is the underlying cause of the red blood cell destruction in many CAD patients,” commented Catherine Broome, MD, associate professor of medicine at Georgetown University Lombardi Comprehensive Cancer Center, in a company press release.

Dr. Broome was the principal investigator in the CARDINAL study, which was the basis for the new approval. In this pivotal study, patients treated with sutimlimab had an improvement in anemia as measured by hemoglobin (Hgb) and bilirubin levels, she commented in the company statement.

The CARDINAL study was a 26-week open-label, single-arm phase 3 study conducted in 24 patients with CAD who had recent history of blood transfusion.

The primary efficacy endpoint was a composite defined as the proportion of patients who achieved normalization of Hgb level greater than or equal to 12 g/dL or demonstrated an increase from baseline in Hgb level greater than or equal to 2 g/dL at the treatment assessment time point (mean value from weeks 23, 25, and 26) and no blood transfusion from weeks 5 through 26.

More than half of the patients (13 of 24, 54%) met the composite primary endpoint criteria, with 17 of 24 (71%) patients remaining transfusion-free after week 5. Most patients (22 of 24, 92%) did not use other CAD-related treatments.

For the secondary measures on disease process, patients enrolled in the trial experienced a mean increase in Hgb level of 2.29 g/dL at week 3 and 3.18 g/dL at the 26-week treatment assessment time points (increasing from the mean baseline level of 8.6 g/dL). In addition, there was a mean reduction in bilirubin levels (n = 14) of -2.23 mg/dL from a mean baseline level of 3.23 mg/dL.

The most common adverse reactions occurring in 10% or more of patients were respiratory tract infection, viral infection, diarrhea, dyspepsia, cough, arthralgia, arthritis, and peripheral edema. Serious adverse reactions were reported in 3 of 24 (13%) patients, and these included streptococcal sepsis and staphylococcal wound infection (n = 1), arthralgia (n = 1), and respiratory tract infection (n = 1).

None of the adverse reactions led to discontinuation of the drug, the company noted. Dosage interruptions due to an adverse reaction occurred in 4 of 24 (17%) patients who received the drug.

The recommended dose is based on body weight (6,500 mg for people 39-75 kg and 7,500 mg for people greater than 75 kg). The drug is administered intravenously weekly for the first 2 weeks with administration every 2 weeks thereafter.

Full prescribing information is available here.

The product is a humanized monoclonal antibody that is designed to selectively target and inhibit C1s in the classical complement pathway, which is part of the innate immune system. By blocking C1s, Enjaymo inhibits the activation of the complement cascade in the immune system and inhibits C1-activated hemolysis in CAD to prevent the abnormal destruction of healthy red blood cells. Enjaymo does not inhibit the lectin and alternative pathways, the company noted.

In the U.S., Enjaymo received FDA breakthrough therapy and orphan drug designation, as well as priority review. The product is awaiting approval in Europe and Japan.

Sanofi says the product is expected to be available in the United States in the coming weeks, with a list price, or wholesale acquisition cost, of $1,800 per vial. Actual costs to patients are generally anticipated to be lower, as the list price does not reflect insurance coverage, copay support, or financial assistance from patient support programs. The company offers support for eligible patients on 1-833-223-2428.

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

A new drug has become the first and only treatment for people with cold agglutinin disease (CAD) that is approved by the U.S. Food and Drug Administration.

CAD is a rare autoimmune hemolytic anemia, affecting about 5,000 people in the United States. It is caused by antibodies binding to the surface of red blood cells, which starts a process that causes the body’s immune system to mistakenly attack healthy red blood cells and cause their rupture (hemolysis). This can lead to severe anemia, which is often treated by blood transfusions.

The new product is sutimlimab-jome (Enjaymo), and it works by inhibiting the destruction of red blood cells and so decreases the need for blood transfusions.

“For people living with cold agglutinin disease, it is as if their body’s immune system is waging a war on itself. The relentless destruction of healthy red blood cells is a daily, silent reality for people with CAD. For the first time, we have a treatment that targets complement-mediated hemolysis, which is the underlying cause of the red blood cell destruction in many CAD patients,” commented Catherine Broome, MD, associate professor of medicine at Georgetown University Lombardi Comprehensive Cancer Center, in a company press release.

Dr. Broome was the principal investigator in the CARDINAL study, which was the basis for the new approval. In this pivotal study, patients treated with sutimlimab had an improvement in anemia as measured by hemoglobin (Hgb) and bilirubin levels, she commented in the company statement.

The CARDINAL study was a 26-week open-label, single-arm phase 3 study conducted in 24 patients with CAD who had recent history of blood transfusion.

The primary efficacy endpoint was a composite defined as the proportion of patients who achieved normalization of Hgb level greater than or equal to 12 g/dL or demonstrated an increase from baseline in Hgb level greater than or equal to 2 g/dL at the treatment assessment time point (mean value from weeks 23, 25, and 26) and no blood transfusion from weeks 5 through 26.

More than half of the patients (13 of 24, 54%) met the composite primary endpoint criteria, with 17 of 24 (71%) patients remaining transfusion-free after week 5. Most patients (22 of 24, 92%) did not use other CAD-related treatments.

For the secondary measures on disease process, patients enrolled in the trial experienced a mean increase in Hgb level of 2.29 g/dL at week 3 and 3.18 g/dL at the 26-week treatment assessment time points (increasing from the mean baseline level of 8.6 g/dL). In addition, there was a mean reduction in bilirubin levels (n = 14) of -2.23 mg/dL from a mean baseline level of 3.23 mg/dL.

The most common adverse reactions occurring in 10% or more of patients were respiratory tract infection, viral infection, diarrhea, dyspepsia, cough, arthralgia, arthritis, and peripheral edema. Serious adverse reactions were reported in 3 of 24 (13%) patients, and these included streptococcal sepsis and staphylococcal wound infection (n = 1), arthralgia (n = 1), and respiratory tract infection (n = 1).

None of the adverse reactions led to discontinuation of the drug, the company noted. Dosage interruptions due to an adverse reaction occurred in 4 of 24 (17%) patients who received the drug.

The recommended dose is based on body weight (6,500 mg for people 39-75 kg and 7,500 mg for people greater than 75 kg). The drug is administered intravenously weekly for the first 2 weeks with administration every 2 weeks thereafter.

Full prescribing information is available here.

The product is a humanized monoclonal antibody that is designed to selectively target and inhibit C1s in the classical complement pathway, which is part of the innate immune system. By blocking C1s, Enjaymo inhibits the activation of the complement cascade in the immune system and inhibits C1-activated hemolysis in CAD to prevent the abnormal destruction of healthy red blood cells. Enjaymo does not inhibit the lectin and alternative pathways, the company noted.

In the U.S., Enjaymo received FDA breakthrough therapy and orphan drug designation, as well as priority review. The product is awaiting approval in Europe and Japan.

Sanofi says the product is expected to be available in the United States in the coming weeks, with a list price, or wholesale acquisition cost, of $1,800 per vial. Actual costs to patients are generally anticipated to be lower, as the list price does not reflect insurance coverage, copay support, or financial assistance from patient support programs. The company offers support for eligible patients on 1-833-223-2428.

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

The U.S. Food and Drug Administration has approved rilpivirine and cabotegravir (Cabenuva) to 2-month dosing for adults living with HIV-1 infection.

Cabenuva was first approved by the FDA in January 2021 to be administered once monthly to treat HIV-1 infection in virologically suppressed adults. The medication was the first injectable complete antiretroviral regimen approved by the FDA.

Cabenuva can replace a current treatment in virologically suppressed adults on a stable antiretroviral regimen with no history of treatment failure and no known or suspected resistance to rilpivirine and cabotegravir, the Janssen Pharmaceutical Companies of Johnson & Johnson said in a press release. Janssen and ViiV Healthcare codeveloped the injectable antiretroviral medication Cabenuva.

The expanded label approval “marks an important step forward in advancing the treatment landscape for people living with HIV,” said Candice Long, the president of infectious diseases and vaccines at Janssen Therapeutics, in a Feb. 1 press release. “With this milestone, adults living with HIV have a treatment option that further reduces the frequency of medication.”

This expanded approval was based on global clinical trial of 1,045 adults with HIV-1, which found Cabenuva administered every 8 weeks (3 mL dose of both cabotegravir and rilpivirine) to be noninferior to the 4-week regimen (2 mL dose of both medicines). At week 48 of the trial, the proportion of participants with viral loads above 50 copies per milliliter was 1.7% in the 2-month arm and 1.0% in the 1-month arm. The study found that rates of virological suppression were similar for both the 1-month and 2-month regimens (93.5% and 94.3%, respectively).

The most common side effects were injection site reactions, pyrexia, fatigue, headache, musculoskeletal pain, nausea, sleep disorders, dizziness, and rash. Adverse reactions reported in individuals receiving the regimen every 2 months or once monthly were similar. Cabenuva is contraindicated for patients with a hypersensitivity reaction to cabotegravir or rilpivirine or for those receiving carbamazepine, oxcarbazepine, phenobarbital, phenytoin, rifabutin, rifampin, rifapentine, St. John’s wort, and more than one dose of systemic dexamethasone.

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

The U.S. Food and Drug Administration has approved rilpivirine and cabotegravir (Cabenuva) to 2-month dosing for adults living with HIV-1 infection.

Cabenuva was first approved by the FDA in January 2021 to be administered once monthly to treat HIV-1 infection in virologically suppressed adults. The medication was the first injectable complete antiretroviral regimen approved by the FDA.

Cabenuva can replace a current treatment in virologically suppressed adults on a stable antiretroviral regimen with no history of treatment failure and no known or suspected resistance to rilpivirine and cabotegravir, the Janssen Pharmaceutical Companies of Johnson & Johnson said in a press release. Janssen and ViiV Healthcare codeveloped the injectable antiretroviral medication Cabenuva.

The expanded label approval “marks an important step forward in advancing the treatment landscape for people living with HIV,” said Candice Long, the president of infectious diseases and vaccines at Janssen Therapeutics, in a Feb. 1 press release. “With this milestone, adults living with HIV have a treatment option that further reduces the frequency of medication.”

This expanded approval was based on global clinical trial of 1,045 adults with HIV-1, which found Cabenuva administered every 8 weeks (3 mL dose of both cabotegravir and rilpivirine) to be noninferior to the 4-week regimen (2 mL dose of both medicines). At week 48 of the trial, the proportion of participants with viral loads above 50 copies per milliliter was 1.7% in the 2-month arm and 1.0% in the 1-month arm. The study found that rates of virological suppression were similar for both the 1-month and 2-month regimens (93.5% and 94.3%, respectively).

The most common side effects were injection site reactions, pyrexia, fatigue, headache, musculoskeletal pain, nausea, sleep disorders, dizziness, and rash. Adverse reactions reported in individuals receiving the regimen every 2 months or once monthly were similar. Cabenuva is contraindicated for patients with a hypersensitivity reaction to cabotegravir or rilpivirine or for those receiving carbamazepine, oxcarbazepine, phenobarbital, phenytoin, rifabutin, rifampin, rifapentine, St. John’s wort, and more than one dose of systemic dexamethasone.

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

The U.S. Food and Drug Administration has approved rilpivirine and cabotegravir (Cabenuva) to 2-month dosing for adults living with HIV-1 infection.

Cabenuva was first approved by the FDA in January 2021 to be administered once monthly to treat HIV-1 infection in virologically suppressed adults. The medication was the first injectable complete antiretroviral regimen approved by the FDA.

Cabenuva can replace a current treatment in virologically suppressed adults on a stable antiretroviral regimen with no history of treatment failure and no known or suspected resistance to rilpivirine and cabotegravir, the Janssen Pharmaceutical Companies of Johnson & Johnson said in a press release. Janssen and ViiV Healthcare codeveloped the injectable antiretroviral medication Cabenuva.

The expanded label approval “marks an important step forward in advancing the treatment landscape for people living with HIV,” said Candice Long, the president of infectious diseases and vaccines at Janssen Therapeutics, in a Feb. 1 press release. “With this milestone, adults living with HIV have a treatment option that further reduces the frequency of medication.”

This expanded approval was based on global clinical trial of 1,045 adults with HIV-1, which found Cabenuva administered every 8 weeks (3 mL dose of both cabotegravir and rilpivirine) to be noninferior to the 4-week regimen (2 mL dose of both medicines). At week 48 of the trial, the proportion of participants with viral loads above 50 copies per milliliter was 1.7% in the 2-month arm and 1.0% in the 1-month arm. The study found that rates of virological suppression were similar for both the 1-month and 2-month regimens (93.5% and 94.3%, respectively).

The most common side effects were injection site reactions, pyrexia, fatigue, headache, musculoskeletal pain, nausea, sleep disorders, dizziness, and rash. Adverse reactions reported in individuals receiving the regimen every 2 months or once monthly were similar. Cabenuva is contraindicated for patients with a hypersensitivity reaction to cabotegravir or rilpivirine or for those receiving carbamazepine, oxcarbazepine, phenobarbital, phenytoin, rifabutin, rifampin, rifapentine, St. John’s wort, and more than one dose of systemic dexamethasone.

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

This transcript has been edited for clarity. The transcript and an accompanying video first appeared on Medscape.com.

This is Mark Kris from chilly New York and Memorial Sloan Kettering. Today I want to talk about a recent article in the Journal of Clinical Oncology that reported a study of a new neurokinin-1 antagonist called fosnetupitant. This was a well-conducted trial that demonstrates the noninferiority of IV fosnetupitant when compared with IV fosaprepitant. By their study criteria, fosnetupitant was not inferior.

But my reason for discussing this is that the paper and the trial miss the point for the field right now. Although the authors talk about the prevention of nausea and vomiting in the introduction, in the paper itself and in the abstract results section, there’s not a single mention about the medication’s ability to control nausea, which is the critical issue for our patients today. You have to go into the supplementary data to find it mentioned, and what you find is that the prevention of nausea is 50% for both the control and this new drug. We control nausea in only half of the patients who receive cisplatin in 2022. That is a huge issue.

When you ask patients what are the effects of cancer treatment that they fear most, that concerns them most, it’s nausea and emesis; indeed, nausea has replaced emesis as the biggest concern. And although this trial used emesis as the main endpoint, and it was useful in defining the drug, it was not useful in coming up with a new treatment that addresses a huge need. Further, the authors talk about an advantage to fosnetupitant based on infusion reactions, but it is a difference of 0.3% vs. 3%. They talk about that sort of thing in the abstract and in the discussion section but don’t include nausea as part of the key endpoint of this trial. Again, you had to dig deeply to find out that, frankly, fosnetupitant was no better than the drugs we already have.

The other concerning point is that we do have another drug that works well. If you go to the American Society of Clinical Oncology or National Comprehensive Cancer Network guidelines for patients receiving high dosages of cisplatin, you find a four-drug regimen, including olanzapine, and that was not used here. Why is olanzapine so critical? It’s an available drug, it’s an inexpensive drug, it’s a safe drug, and it improves nausea by 15%.

So they did this huge trial to show noninferiority, and they neglected to give a drug that could deal with the most serious side effect of cancer therapy – nausea – and improve things by 15%.

A challenge to people in this field: We have to do better. Nausea is a big problem. While noninferiority trials can be helpful for drug development, they’re not really helpful for the field. With a problem of this magnitude, we need better drugs to control nausea. In the meantime, I urge you all to follow the guidelines for high doses of cisplatin. Please use the four-drug regimen that is recommended in the guidelines and widely used in the United States. Going forward, make sure that when we expend huge amounts of energy to develop new agents and report them in our medical journals, that we look for ways to advance care where there are significant gaps in our ability to deliver what we want. Delivering better control of nausea is something we all need to be committed to. It’s a huge unmet need, and I hope future trials will address that need. Our patients will be better for it and we’ll be better in that we’re delivering what patients deserve, what they need, and what they ask for.

Mark G. Kris, MD, is chief of the thoracic oncology service and the William and Joy Ruane Chair in Thoracic Oncology at Memorial Sloan Kettering Cancer Center in New York City. He reported serving as a director, officer, partner, employee, adviser, consultant, or trustee for AstraZeneca, Roche/Genentech, and Ariad Pharmaceuticals, and has received research grants from Pfizer, PUMA, and Roche/Genentech.

This transcript has been edited for clarity. The transcript and an accompanying video first appeared on Medscape.com.

This is Mark Kris from chilly New York and Memorial Sloan Kettering. Today I want to talk about a recent article in the Journal of Clinical Oncology that reported a study of a new neurokinin-1 antagonist called fosnetupitant. This was a well-conducted trial that demonstrates the noninferiority of IV fosnetupitant when compared with IV fosaprepitant. By their study criteria, fosnetupitant was not inferior.

But my reason for discussing this is that the paper and the trial miss the point for the field right now. Although the authors talk about the prevention of nausea and vomiting in the introduction, in the paper itself and in the abstract results section, there’s not a single mention about the medication’s ability to control nausea, which is the critical issue for our patients today. You have to go into the supplementary data to find it mentioned, and what you find is that the prevention of nausea is 50% for both the control and this new drug. We control nausea in only half of the patients who receive cisplatin in 2022. That is a huge issue.

When you ask patients what are the effects of cancer treatment that they fear most, that concerns them most, it’s nausea and emesis; indeed, nausea has replaced emesis as the biggest concern. And although this trial used emesis as the main endpoint, and it was useful in defining the drug, it was not useful in coming up with a new treatment that addresses a huge need. Further, the authors talk about an advantage to fosnetupitant based on infusion reactions, but it is a difference of 0.3% vs. 3%. They talk about that sort of thing in the abstract and in the discussion section but don’t include nausea as part of the key endpoint of this trial. Again, you had to dig deeply to find out that, frankly, fosnetupitant was no better than the drugs we already have.

The other concerning point is that we do have another drug that works well. If you go to the American Society of Clinical Oncology or National Comprehensive Cancer Network guidelines for patients receiving high dosages of cisplatin, you find a four-drug regimen, including olanzapine, and that was not used here. Why is olanzapine so critical? It’s an available drug, it’s an inexpensive drug, it’s a safe drug, and it improves nausea by 15%.

So they did this huge trial to show noninferiority, and they neglected to give a drug that could deal with the most serious side effect of cancer therapy – nausea – and improve things by 15%.

A challenge to people in this field: We have to do better. Nausea is a big problem. While noninferiority trials can be helpful for drug development, they’re not really helpful for the field. With a problem of this magnitude, we need better drugs to control nausea. In the meantime, I urge you all to follow the guidelines for high doses of cisplatin. Please use the four-drug regimen that is recommended in the guidelines and widely used in the United States. Going forward, make sure that when we expend huge amounts of energy to develop new agents and report them in our medical journals, that we look for ways to advance care where there are significant gaps in our ability to deliver what we want. Delivering better control of nausea is something we all need to be committed to. It’s a huge unmet need, and I hope future trials will address that need. Our patients will be better for it and we’ll be better in that we’re delivering what patients deserve, what they need, and what they ask for.

Mark G. Kris, MD, is chief of the thoracic oncology service and the William and Joy Ruane Chair in Thoracic Oncology at Memorial Sloan Kettering Cancer Center in New York City. He reported serving as a director, officer, partner, employee, adviser, consultant, or trustee for AstraZeneca, Roche/Genentech, and Ariad Pharmaceuticals, and has received research grants from Pfizer, PUMA, and Roche/Genentech.

This transcript has been edited for clarity. The transcript and an accompanying video first appeared on Medscape.com.

This is Mark Kris from chilly New York and Memorial Sloan Kettering. Today I want to talk about a recent article in the Journal of Clinical Oncology that reported a study of a new neurokinin-1 antagonist called fosnetupitant. This was a well-conducted trial that demonstrates the noninferiority of IV fosnetupitant when compared with IV fosaprepitant. By their study criteria, fosnetupitant was not inferior.

But my reason for discussing this is that the paper and the trial miss the point for the field right now. Although the authors talk about the prevention of nausea and vomiting in the introduction, in the paper itself and in the abstract results section, there’s not a single mention about the medication’s ability to control nausea, which is the critical issue for our patients today. You have to go into the supplementary data to find it mentioned, and what you find is that the prevention of nausea is 50% for both the control and this new drug. We control nausea in only half of the patients who receive cisplatin in 2022. That is a huge issue.

When you ask patients what are the effects of cancer treatment that they fear most, that concerns them most, it’s nausea and emesis; indeed, nausea has replaced emesis as the biggest concern. And although this trial used emesis as the main endpoint, and it was useful in defining the drug, it was not useful in coming up with a new treatment that addresses a huge need. Further, the authors talk about an advantage to fosnetupitant based on infusion reactions, but it is a difference of 0.3% vs. 3%. They talk about that sort of thing in the abstract and in the discussion section but don’t include nausea as part of the key endpoint of this trial. Again, you had to dig deeply to find out that, frankly, fosnetupitant was no better than the drugs we already have.

The other concerning point is that we do have another drug that works well. If you go to the American Society of Clinical Oncology or National Comprehensive Cancer Network guidelines for patients receiving high dosages of cisplatin, you find a four-drug regimen, including olanzapine, and that was not used here. Why is olanzapine so critical? It’s an available drug, it’s an inexpensive drug, it’s a safe drug, and it improves nausea by 15%.

So they did this huge trial to show noninferiority, and they neglected to give a drug that could deal with the most serious side effect of cancer therapy – nausea – and improve things by 15%.

A challenge to people in this field: We have to do better. Nausea is a big problem. While noninferiority trials can be helpful for drug development, they’re not really helpful for the field. With a problem of this magnitude, we need better drugs to control nausea. In the meantime, I urge you all to follow the guidelines for high doses of cisplatin. Please use the four-drug regimen that is recommended in the guidelines and widely used in the United States. Going forward, make sure that when we expend huge amounts of energy to develop new agents and report them in our medical journals, that we look for ways to advance care where there are significant gaps in our ability to deliver what we want. Delivering better control of nausea is something we all need to be committed to. It’s a huge unmet need, and I hope future trials will address that need. Our patients will be better for it and we’ll be better in that we’re delivering what patients deserve, what they need, and what they ask for.

Mark G. Kris, MD, is chief of the thoracic oncology service and the William and Joy Ruane Chair in Thoracic Oncology at Memorial Sloan Kettering Cancer Center in New York City. He reported serving as a director, officer, partner, employee, adviser, consultant, or trustee for AstraZeneca, Roche/Genentech, and Ariad Pharmaceuticals, and has received research grants from Pfizer, PUMA, and Roche/Genentech.