At least 25% of unresponsive patients with a disorder of consciousness show signs of brain activity, an estimate that is higher than previous studies suggest.

“We found that at least 1 in 4 patients who are unresponsive to commands might actually be quite present and highly cognitive,” said study investigator Nicholas D. Schiff, MD, Feil Family Brain & Mind Research Institute and Department of Neurology, Weill Cornell Medicine, Rockefeller University Hospital, New York.

“In other words, if you go to the bedside and carefully examine someone with a severe brain injury and find no evidence of responsiveness, no one has been able to give you an a priori number to say how likely you are to be wrong in thinking this person is actually unaware, not processing language, and not capable of high-level cognitive work. And the answer to that now is at least 1 in 4 times.”

The findings were published online in The New England Journal of Medicine.
 

Clinical Implications? 

Cognitive motor dissociation (CMD) is a condition whereby patients with a severe brain injury who are unresponsive to commands at the bedside show brain activity on functional MRI (fMRI) or electroencephalography (EEG) when presented with selective motor imagery commands, such as “imagine playing tennis,” or “ imagine opening and closing your hand.”

Previous research shows that CMD is present in 10%-20% of people with a disorder of consciousness, a rate similar to that in patients with acute or chronic brain injury.

Understanding that a patient who appears unconscious has signs of cognitive processing could change the way clinicians and family interact with such individuals. Unresponsive patients who are aware may eventually be able to harness emerging communication technologies such as brain-computer interfaces.

In addition, knowing an individual’s CMD status could aid in prognosis. “We know from one study that there’s a four times increased likelihood that patients will be independent in a year in their function if they have cognitive motor dissociation,” said Dr. Schiff.

Unlike most previous studies of CMD, which were conducted at single sites and had relatively small cohorts, this new study included 353 adults with a disorder of consciousness (mean age, 37.9 years; 64% male) at six multinational sites.

Participants were recruited using a variety of methods, including consecutive enrollment of critically ill patients in the intensive care unit and enrollment of those with chronic illness or injury who were in the postacute phase of brain injury.
 

Response to Commands

Study participants were at different stages of recovery from an acute brain injury that had occurred an average of 8 months before the study started.

To determine the presence or absence of an observable response to commands among participants, trained staff used the Coma Recovery Scale–Revised (CRS-R); scores on this instrument range from 0 to 23, and higher scores indicate better neurobehavioral function.

About 40% of individuals were diagnosed with coma or vegetative state, 29% with minimally conscious state–minus, and 22% with minimally conscious state–plus. In all, 10% had emerged from a minimally conscious state.

Researchers assessed response to timed and repeated commands using fMRI or EEG in participants without an observable response to verbal commands, including those with a behavioral diagnosis of coma, vegetative state, or minimally conscious state–minus, and in participants with an observable response to verbal commands.

Of the 353 study participants, 61% underwent at least one fMRI assessment and 74% at least one EEG assessment. Both fMRI and EEG were performed in 35% of participants.

Dr. Schiff explained the two assessment types provide slightly different information, in that they measuring different types of brain signals. He also noted that although “every medical center in the world” has EEG, many do not have fMRI.

The brain imaging assessments captured brain activity within the motor area of the frontal cortex when tasked with motor imagery.

Of the 241 participants deemed to be in a coma or vegetative state or minimally conscious state–minus on the basis of CRS-R score, 60 (25%) had a response to commands on task-based fMRI, task-based EEG, or both.

The percentage of participants with CMD varied across study sites, from 2% to 45%, but Dr. Schiff said the reason for this is unclear. 

The proportion of participants with CMD may have been even higher if all individuals had been assessed with both imaging techniques, he said.
 

Higher Rate of Awareness Than in Previous Research

The investigators noted that the percentage of participants with CMD in their study was up to 10 percentage points higher than in previous studies. This may be due to the multimodal approach that classified participants undergoing assessment with both fMRI and EEG on the basis of responses on either technique, they said. 

The median age was lower among participants with CMD than those without CMD (30.5 years vs 45.3 years).

Compared with participants without CMD, a higher percentage of those with such dissociation had brain trauma as an etiologic factor (65% vs 38%) and a diagnosis of minimally conscious state–minus on the CRS-R (53% vs 38%).

Among people with CMD, 18% were assessed with fMRI only, 22% with EEG only, and 60% with both fMRI and EEG.

Dr. Schiff noted that the use of both fMRI and EEG appears to be more sensitive in detecting brain activity during tasks compared with use of one of these techniques alone.

Of the 112 participants with a diagnosis of minimally conscious state–plus or who had emerged from the minimally conscious state, 38% had a response to commands on task-based fMRI, task-based EEG, or both. Among these participants, 23% were assessed with fMRI only, 19% with EEG only, and 58% with both fMRI and EEG.

Research shows “it’s very clear that people with severe brain injury continue to get better over time,” noted Dr. Schiff. “Every month and week matters, and so it probably is the case that a lot of these patients are picking up the level of recovery, and the later we go out to measure them, the more likely we are to find people who are CMD than not.”

These new results should prompt further study to explore whether detection of CMD can lead to improved outcomes, the investigators noted. “In addition, the standardization, validation, and simplification of task-based fMRI and EEG methods that are used to detect cognitive motor dissociation are needed to prompt widespread clinical integration of these techniques and investigation of the bioethical implications of the findings.”

All study participants with chronic brain injury had survived their initial illness or injury and had access to a research facility with advanced fMRI and EEG capabilities. “This survival bias may reflect greater cognitive reserve and resilience over time among the participants. As such, the results of our study may not be generalizable to the overall population of patients with cognitive motor dissociation,” the investigators wrote.

Another study limitation was that participating sites used heterogeneous strategies to acquire, analyze, and interpret data, which led to differences in the number, type, and ordering of the cognitive tasks assessed on fMRI and EEG.

“These differences, along with variations in recruitment strategies and participant characteristics, may have contributed to the unequal percentage of participants with cognitive motor dissociation observed at each site. Our findings may therefore not be generalizable across all centers,” the researchers wrote. 

Only a few academic medical centers have the specially trained personnel and techniques needed to assess patients for CMD — which, the researchers noted, limits the feasibility of performing these assessments in general practice.
 

Challenging Research

Commenting on the research, Aarti Sarwal, MD, professor of neurology and section chief, Neurocritical Care, Virginia Commonwealth University, Richmond, Virginia, noted that this was a “very challenging” study to perform, given that only a few academic centers are equipped to perform both fMRI and quantitative EEG analysis.

“In general, finding patients this far out, who have access to clinical, radiological, and electrophysiological testing and were provided good care enough to receive these, is a mammoth task in itself.” 

Dr. Sarwal said the study builds on efforts of the Curing Coma campaign , a clinical, scientific, and public health effort of the Neurocritical Care Society to tackle the concept of coma as a treatable medical entity.

“It continues to highlight the challenges of prognostication in acute brain injured patients by showing a higher presence of cognitive function than previously perceived,” she said.

Dr. Sarwal believes that the study’s largest impact is underscoring the need for more research into understanding the degree and quality of cognitive processing in patients with a disorder of consciousness. But it also underlines the need for a “healthy debate” on the cost/benefit analysis of pursuing such research, given the limited number of patients with access to resources. 

“This debate needs to include the caregivers and families outside the traditional realms of stakeholders overseeing the science.” 

Although communication with comatose patients is still “a ways away,” this research is “a step in the right direction,” said Dr. Sarwal. 

The study was funded by the James S. McDonnell Foundation and others. Dr. Schiff and Dr. Sarwal report no relevant financial disclosures.
 

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

At least 25% of unresponsive patients with a disorder of consciousness show signs of brain activity, an estimate that is higher than previous studies suggest.

“We found that at least 1 in 4 patients who are unresponsive to commands might actually be quite present and highly cognitive,” said study investigator Nicholas D. Schiff, MD, Feil Family Brain & Mind Research Institute and Department of Neurology, Weill Cornell Medicine, Rockefeller University Hospital, New York.

“In other words, if you go to the bedside and carefully examine someone with a severe brain injury and find no evidence of responsiveness, no one has been able to give you an a priori number to say how likely you are to be wrong in thinking this person is actually unaware, not processing language, and not capable of high-level cognitive work. And the answer to that now is at least 1 in 4 times.”

The findings were published online in The New England Journal of Medicine.
 

Clinical Implications? 

Cognitive motor dissociation (CMD) is a condition whereby patients with a severe brain injury who are unresponsive to commands at the bedside show brain activity on functional MRI (fMRI) or electroencephalography (EEG) when presented with selective motor imagery commands, such as “imagine playing tennis,” or “ imagine opening and closing your hand.”

Previous research shows that CMD is present in 10%-20% of people with a disorder of consciousness, a rate similar to that in patients with acute or chronic brain injury.

Understanding that a patient who appears unconscious has signs of cognitive processing could change the way clinicians and family interact with such individuals. Unresponsive patients who are aware may eventually be able to harness emerging communication technologies such as brain-computer interfaces.

In addition, knowing an individual’s CMD status could aid in prognosis. “We know from one study that there’s a four times increased likelihood that patients will be independent in a year in their function if they have cognitive motor dissociation,” said Dr. Schiff.

Unlike most previous studies of CMD, which were conducted at single sites and had relatively small cohorts, this new study included 353 adults with a disorder of consciousness (mean age, 37.9 years; 64% male) at six multinational sites.

Participants were recruited using a variety of methods, including consecutive enrollment of critically ill patients in the intensive care unit and enrollment of those with chronic illness or injury who were in the postacute phase of brain injury.
 

Response to Commands

Study participants were at different stages of recovery from an acute brain injury that had occurred an average of 8 months before the study started.

To determine the presence or absence of an observable response to commands among participants, trained staff used the Coma Recovery Scale–Revised (CRS-R); scores on this instrument range from 0 to 23, and higher scores indicate better neurobehavioral function.

About 40% of individuals were diagnosed with coma or vegetative state, 29% with minimally conscious state–minus, and 22% with minimally conscious state–plus. In all, 10% had emerged from a minimally conscious state.

Researchers assessed response to timed and repeated commands using fMRI or EEG in participants without an observable response to verbal commands, including those with a behavioral diagnosis of coma, vegetative state, or minimally conscious state–minus, and in participants with an observable response to verbal commands.

Of the 353 study participants, 61% underwent at least one fMRI assessment and 74% at least one EEG assessment. Both fMRI and EEG were performed in 35% of participants.

Dr. Schiff explained the two assessment types provide slightly different information, in that they measuring different types of brain signals. He also noted that although “every medical center in the world” has EEG, many do not have fMRI.

The brain imaging assessments captured brain activity within the motor area of the frontal cortex when tasked with motor imagery.

Of the 241 participants deemed to be in a coma or vegetative state or minimally conscious state–minus on the basis of CRS-R score, 60 (25%) had a response to commands on task-based fMRI, task-based EEG, or both.

The percentage of participants with CMD varied across study sites, from 2% to 45%, but Dr. Schiff said the reason for this is unclear. 

The proportion of participants with CMD may have been even higher if all individuals had been assessed with both imaging techniques, he said.
 

Higher Rate of Awareness Than in Previous Research

The investigators noted that the percentage of participants with CMD in their study was up to 10 percentage points higher than in previous studies. This may be due to the multimodal approach that classified participants undergoing assessment with both fMRI and EEG on the basis of responses on either technique, they said. 

The median age was lower among participants with CMD than those without CMD (30.5 years vs 45.3 years).

Compared with participants without CMD, a higher percentage of those with such dissociation had brain trauma as an etiologic factor (65% vs 38%) and a diagnosis of minimally conscious state–minus on the CRS-R (53% vs 38%).

Among people with CMD, 18% were assessed with fMRI only, 22% with EEG only, and 60% with both fMRI and EEG.

Dr. Schiff noted that the use of both fMRI and EEG appears to be more sensitive in detecting brain activity during tasks compared with use of one of these techniques alone.

Of the 112 participants with a diagnosis of minimally conscious state–plus or who had emerged from the minimally conscious state, 38% had a response to commands on task-based fMRI, task-based EEG, or both. Among these participants, 23% were assessed with fMRI only, 19% with EEG only, and 58% with both fMRI and EEG.

Research shows “it’s very clear that people with severe brain injury continue to get better over time,” noted Dr. Schiff. “Every month and week matters, and so it probably is the case that a lot of these patients are picking up the level of recovery, and the later we go out to measure them, the more likely we are to find people who are CMD than not.”

These new results should prompt further study to explore whether detection of CMD can lead to improved outcomes, the investigators noted. “In addition, the standardization, validation, and simplification of task-based fMRI and EEG methods that are used to detect cognitive motor dissociation are needed to prompt widespread clinical integration of these techniques and investigation of the bioethical implications of the findings.”

All study participants with chronic brain injury had survived their initial illness or injury and had access to a research facility with advanced fMRI and EEG capabilities. “This survival bias may reflect greater cognitive reserve and resilience over time among the participants. As such, the results of our study may not be generalizable to the overall population of patients with cognitive motor dissociation,” the investigators wrote.

Another study limitation was that participating sites used heterogeneous strategies to acquire, analyze, and interpret data, which led to differences in the number, type, and ordering of the cognitive tasks assessed on fMRI and EEG.

“These differences, along with variations in recruitment strategies and participant characteristics, may have contributed to the unequal percentage of participants with cognitive motor dissociation observed at each site. Our findings may therefore not be generalizable across all centers,” the researchers wrote. 

Only a few academic medical centers have the specially trained personnel and techniques needed to assess patients for CMD — which, the researchers noted, limits the feasibility of performing these assessments in general practice.
 

Challenging Research

Commenting on the research, Aarti Sarwal, MD, professor of neurology and section chief, Neurocritical Care, Virginia Commonwealth University, Richmond, Virginia, noted that this was a “very challenging” study to perform, given that only a few academic centers are equipped to perform both fMRI and quantitative EEG analysis.

“In general, finding patients this far out, who have access to clinical, radiological, and electrophysiological testing and were provided good care enough to receive these, is a mammoth task in itself.” 

Dr. Sarwal said the study builds on efforts of the Curing Coma campaign , a clinical, scientific, and public health effort of the Neurocritical Care Society to tackle the concept of coma as a treatable medical entity.

“It continues to highlight the challenges of prognostication in acute brain injured patients by showing a higher presence of cognitive function than previously perceived,” she said.

Dr. Sarwal believes that the study’s largest impact is underscoring the need for more research into understanding the degree and quality of cognitive processing in patients with a disorder of consciousness. But it also underlines the need for a “healthy debate” on the cost/benefit analysis of pursuing such research, given the limited number of patients with access to resources. 

“This debate needs to include the caregivers and families outside the traditional realms of stakeholders overseeing the science.” 

Although communication with comatose patients is still “a ways away,” this research is “a step in the right direction,” said Dr. Sarwal. 

The study was funded by the James S. McDonnell Foundation and others. Dr. Schiff and Dr. Sarwal report no relevant financial disclosures.
 

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

At least 25% of unresponsive patients with a disorder of consciousness show signs of brain activity, an estimate that is higher than previous studies suggest.

“We found that at least 1 in 4 patients who are unresponsive to commands might actually be quite present and highly cognitive,” said study investigator Nicholas D. Schiff, MD, Feil Family Brain & Mind Research Institute and Department of Neurology, Weill Cornell Medicine, Rockefeller University Hospital, New York.

“In other words, if you go to the bedside and carefully examine someone with a severe brain injury and find no evidence of responsiveness, no one has been able to give you an a priori number to say how likely you are to be wrong in thinking this person is actually unaware, not processing language, and not capable of high-level cognitive work. And the answer to that now is at least 1 in 4 times.”

The findings were published online in The New England Journal of Medicine.
 

Clinical Implications? 

Cognitive motor dissociation (CMD) is a condition whereby patients with a severe brain injury who are unresponsive to commands at the bedside show brain activity on functional MRI (fMRI) or electroencephalography (EEG) when presented with selective motor imagery commands, such as “imagine playing tennis,” or “ imagine opening and closing your hand.”

Previous research shows that CMD is present in 10%-20% of people with a disorder of consciousness, a rate similar to that in patients with acute or chronic brain injury.

Understanding that a patient who appears unconscious has signs of cognitive processing could change the way clinicians and family interact with such individuals. Unresponsive patients who are aware may eventually be able to harness emerging communication technologies such as brain-computer interfaces.

In addition, knowing an individual’s CMD status could aid in prognosis. “We know from one study that there’s a four times increased likelihood that patients will be independent in a year in their function if they have cognitive motor dissociation,” said Dr. Schiff.

Unlike most previous studies of CMD, which were conducted at single sites and had relatively small cohorts, this new study included 353 adults with a disorder of consciousness (mean age, 37.9 years; 64% male) at six multinational sites.

Participants were recruited using a variety of methods, including consecutive enrollment of critically ill patients in the intensive care unit and enrollment of those with chronic illness or injury who were in the postacute phase of brain injury.
 

Response to Commands

Study participants were at different stages of recovery from an acute brain injury that had occurred an average of 8 months before the study started.

To determine the presence or absence of an observable response to commands among participants, trained staff used the Coma Recovery Scale–Revised (CRS-R); scores on this instrument range from 0 to 23, and higher scores indicate better neurobehavioral function.

About 40% of individuals were diagnosed with coma or vegetative state, 29% with minimally conscious state–minus, and 22% with minimally conscious state–plus. In all, 10% had emerged from a minimally conscious state.

Researchers assessed response to timed and repeated commands using fMRI or EEG in participants without an observable response to verbal commands, including those with a behavioral diagnosis of coma, vegetative state, or minimally conscious state–minus, and in participants with an observable response to verbal commands.

Of the 353 study participants, 61% underwent at least one fMRI assessment and 74% at least one EEG assessment. Both fMRI and EEG were performed in 35% of participants.

Dr. Schiff explained the two assessment types provide slightly different information, in that they measuring different types of brain signals. He also noted that although “every medical center in the world” has EEG, many do not have fMRI.

The brain imaging assessments captured brain activity within the motor area of the frontal cortex when tasked with motor imagery.

Of the 241 participants deemed to be in a coma or vegetative state or minimally conscious state–minus on the basis of CRS-R score, 60 (25%) had a response to commands on task-based fMRI, task-based EEG, or both.

The percentage of participants with CMD varied across study sites, from 2% to 45%, but Dr. Schiff said the reason for this is unclear. 

The proportion of participants with CMD may have been even higher if all individuals had been assessed with both imaging techniques, he said.
 

Higher Rate of Awareness Than in Previous Research

The investigators noted that the percentage of participants with CMD in their study was up to 10 percentage points higher than in previous studies. This may be due to the multimodal approach that classified participants undergoing assessment with both fMRI and EEG on the basis of responses on either technique, they said. 

The median age was lower among participants with CMD than those without CMD (30.5 years vs 45.3 years).

Compared with participants without CMD, a higher percentage of those with such dissociation had brain trauma as an etiologic factor (65% vs 38%) and a diagnosis of minimally conscious state–minus on the CRS-R (53% vs 38%).

Among people with CMD, 18% were assessed with fMRI only, 22% with EEG only, and 60% with both fMRI and EEG.

Dr. Schiff noted that the use of both fMRI and EEG appears to be more sensitive in detecting brain activity during tasks compared with use of one of these techniques alone.

Of the 112 participants with a diagnosis of minimally conscious state–plus or who had emerged from the minimally conscious state, 38% had a response to commands on task-based fMRI, task-based EEG, or both. Among these participants, 23% were assessed with fMRI only, 19% with EEG only, and 58% with both fMRI and EEG.

Research shows “it’s very clear that people with severe brain injury continue to get better over time,” noted Dr. Schiff. “Every month and week matters, and so it probably is the case that a lot of these patients are picking up the level of recovery, and the later we go out to measure them, the more likely we are to find people who are CMD than not.”

These new results should prompt further study to explore whether detection of CMD can lead to improved outcomes, the investigators noted. “In addition, the standardization, validation, and simplification of task-based fMRI and EEG methods that are used to detect cognitive motor dissociation are needed to prompt widespread clinical integration of these techniques and investigation of the bioethical implications of the findings.”

All study participants with chronic brain injury had survived their initial illness or injury and had access to a research facility with advanced fMRI and EEG capabilities. “This survival bias may reflect greater cognitive reserve and resilience over time among the participants. As such, the results of our study may not be generalizable to the overall population of patients with cognitive motor dissociation,” the investigators wrote.

Another study limitation was that participating sites used heterogeneous strategies to acquire, analyze, and interpret data, which led to differences in the number, type, and ordering of the cognitive tasks assessed on fMRI and EEG.

“These differences, along with variations in recruitment strategies and participant characteristics, may have contributed to the unequal percentage of participants with cognitive motor dissociation observed at each site. Our findings may therefore not be generalizable across all centers,” the researchers wrote. 

Only a few academic medical centers have the specially trained personnel and techniques needed to assess patients for CMD — which, the researchers noted, limits the feasibility of performing these assessments in general practice.
 

Challenging Research

Commenting on the research, Aarti Sarwal, MD, professor of neurology and section chief, Neurocritical Care, Virginia Commonwealth University, Richmond, Virginia, noted that this was a “very challenging” study to perform, given that only a few academic centers are equipped to perform both fMRI and quantitative EEG analysis.

“In general, finding patients this far out, who have access to clinical, radiological, and electrophysiological testing and were provided good care enough to receive these, is a mammoth task in itself.” 

Dr. Sarwal said the study builds on efforts of the Curing Coma campaign , a clinical, scientific, and public health effort of the Neurocritical Care Society to tackle the concept of coma as a treatable medical entity.

“It continues to highlight the challenges of prognostication in acute brain injured patients by showing a higher presence of cognitive function than previously perceived,” she said.

Dr. Sarwal believes that the study’s largest impact is underscoring the need for more research into understanding the degree and quality of cognitive processing in patients with a disorder of consciousness. But it also underlines the need for a “healthy debate” on the cost/benefit analysis of pursuing such research, given the limited number of patients with access to resources. 

“This debate needs to include the caregivers and families outside the traditional realms of stakeholders overseeing the science.” 

Although communication with comatose patients is still “a ways away,” this research is “a step in the right direction,” said Dr. Sarwal. 

The study was funded by the James S. McDonnell Foundation and others. Dr. Schiff and Dr. Sarwal report no relevant financial disclosures.
 

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

TOPLINE: 

Patients with psoriasis, uveitis, or colitis who present with undiagnosed chronic back pain should be referred to a rheumatologist for the assessment of axial spondyloarthritis (axSpA), with MRI being a more accurate diagnostic method than clinical features.

METHODOLOGY:

• Researchers assessed the prevalence of axSpA according to the extra-articular presentation and human leukocyte antigen B27 (HLA-B27) status in two Canadian cohorts (SASPIC 1 and 2).
• Overall, 363 adult patients aged ≤ 45 years with psoriasis, uveitis, or colitis who presented with chronic undiagnosed back and/or buttock pain lasting 3 months or more were included.
• Participants were referred to rheumatologists with expertise in axSpA for structured diagnostic evaluations, including history, physical exam, levels of C-reactive protein, HLA-B27 status, and imaging studies.
• An MRI of the sacroiliac joints was conducted in all patients in the SASPIC-2 cohort and in 62.3% of those in the SASPIC-1 cohort.
• The primary outcome was the proportion of patients diagnosed with axSpA after final global evaluation, and the secondary outcome was the impact of MRI on diagnosis and classification.

TAKEAWAY:

• AxSpA diagnoses were made in 46.7% with psoriasis, 61.6% with uveitis, and 46.8% with colitis in the SASPIC-1 cohort and in 23.5%, 57.9%, and 23.3%, respectively, in the SASPIC-2 cohort.
• Being positive for HLA-B27 was linked to the presence of axSpA in 56%-88% of those in both the cohorts.
• Musculoskeletal clinical features were not helpful in differentiating between patients with and without axSpA.
• In both the cohorts, the MRI of the sacroiliac joints was indicative of axSpA in a significantly greater number of patients with psoriasis, uveitis, or colitis who were diagnosed with axSpA than in those not diagnosed with axSpA (P < .05 for all).

IN PRACTICE:

“Our data supports the benefit of recent referral recommendations that advocate referral to a rheumatologist of patients with chronic back pain and extra-articular features related to axSpA,” the authors wrote.

SOURCE:

The study was led by Walter P. Maksymowych, MB ChB, University of Alberta, Edmonton, Alberta, Canada. It was published online in Arthritis & Rheumatology.

LIMITATIONS: 

MRI readers had to rely on their own expertise to decide if an MRI was indeed positive and thus indicative of axSpA. This study included only patients with undiagnosed back pain, and a longer follow-up duration could have led to a higher number of patients being diagnosed with axial inflammation. In SASPIC-1, local rheumatologists conducted MRI evaluations of the spinal lesions only when necessary, while in SASPIC-2, MRI of only the sacroiliac joints was required.

DISCLOSURES:

SASPIC-1 was supported by AbbVie Canada and Janssen Canada, and SASPIC-2 was supported by AbbVie Canada. The authors disclosed receiving grants, consulting fees, speaking fees, and/or honoraria and having other ties with AbbVie and several other pharmaceutical companies.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE: 

Patients with psoriasis, uveitis, or colitis who present with undiagnosed chronic back pain should be referred to a rheumatologist for the assessment of axial spondyloarthritis (axSpA), with MRI being a more accurate diagnostic method than clinical features.

METHODOLOGY:

• Researchers assessed the prevalence of axSpA according to the extra-articular presentation and human leukocyte antigen B27 (HLA-B27) status in two Canadian cohorts (SASPIC 1 and 2).
• Overall, 363 adult patients aged ≤ 45 years with psoriasis, uveitis, or colitis who presented with chronic undiagnosed back and/or buttock pain lasting 3 months or more were included.
• Participants were referred to rheumatologists with expertise in axSpA for structured diagnostic evaluations, including history, physical exam, levels of C-reactive protein, HLA-B27 status, and imaging studies.
• An MRI of the sacroiliac joints was conducted in all patients in the SASPIC-2 cohort and in 62.3% of those in the SASPIC-1 cohort.
• The primary outcome was the proportion of patients diagnosed with axSpA after final global evaluation, and the secondary outcome was the impact of MRI on diagnosis and classification.

TAKEAWAY:

• AxSpA diagnoses were made in 46.7% with psoriasis, 61.6% with uveitis, and 46.8% with colitis in the SASPIC-1 cohort and in 23.5%, 57.9%, and 23.3%, respectively, in the SASPIC-2 cohort.
• Being positive for HLA-B27 was linked to the presence of axSpA in 56%-88% of those in both the cohorts.
• Musculoskeletal clinical features were not helpful in differentiating between patients with and without axSpA.
• In both the cohorts, the MRI of the sacroiliac joints was indicative of axSpA in a significantly greater number of patients with psoriasis, uveitis, or colitis who were diagnosed with axSpA than in those not diagnosed with axSpA (P < .05 for all).

IN PRACTICE:

“Our data supports the benefit of recent referral recommendations that advocate referral to a rheumatologist of patients with chronic back pain and extra-articular features related to axSpA,” the authors wrote.

SOURCE:

The study was led by Walter P. Maksymowych, MB ChB, University of Alberta, Edmonton, Alberta, Canada. It was published online in Arthritis & Rheumatology.

LIMITATIONS: 

MRI readers had to rely on their own expertise to decide if an MRI was indeed positive and thus indicative of axSpA. This study included only patients with undiagnosed back pain, and a longer follow-up duration could have led to a higher number of patients being diagnosed with axial inflammation. In SASPIC-1, local rheumatologists conducted MRI evaluations of the spinal lesions only when necessary, while in SASPIC-2, MRI of only the sacroiliac joints was required.

DISCLOSURES:

SASPIC-1 was supported by AbbVie Canada and Janssen Canada, and SASPIC-2 was supported by AbbVie Canada. The authors disclosed receiving grants, consulting fees, speaking fees, and/or honoraria and having other ties with AbbVie and several other pharmaceutical companies.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

TOPLINE: 

Patients with psoriasis, uveitis, or colitis who present with undiagnosed chronic back pain should be referred to a rheumatologist for the assessment of axial spondyloarthritis (axSpA), with MRI being a more accurate diagnostic method than clinical features.

METHODOLOGY:

• Researchers assessed the prevalence of axSpA according to the extra-articular presentation and human leukocyte antigen B27 (HLA-B27) status in two Canadian cohorts (SASPIC 1 and 2).
• Overall, 363 adult patients aged ≤ 45 years with psoriasis, uveitis, or colitis who presented with chronic undiagnosed back and/or buttock pain lasting 3 months or more were included.
• Participants were referred to rheumatologists with expertise in axSpA for structured diagnostic evaluations, including history, physical exam, levels of C-reactive protein, HLA-B27 status, and imaging studies.
• An MRI of the sacroiliac joints was conducted in all patients in the SASPIC-2 cohort and in 62.3% of those in the SASPIC-1 cohort.
• The primary outcome was the proportion of patients diagnosed with axSpA after final global evaluation, and the secondary outcome was the impact of MRI on diagnosis and classification.

TAKEAWAY:

• AxSpA diagnoses were made in 46.7% with psoriasis, 61.6% with uveitis, and 46.8% with colitis in the SASPIC-1 cohort and in 23.5%, 57.9%, and 23.3%, respectively, in the SASPIC-2 cohort.
• Being positive for HLA-B27 was linked to the presence of axSpA in 56%-88% of those in both the cohorts.
• Musculoskeletal clinical features were not helpful in differentiating between patients with and without axSpA.
• In both the cohorts, the MRI of the sacroiliac joints was indicative of axSpA in a significantly greater number of patients with psoriasis, uveitis, or colitis who were diagnosed with axSpA than in those not diagnosed with axSpA (P < .05 for all).

IN PRACTICE:

“Our data supports the benefit of recent referral recommendations that advocate referral to a rheumatologist of patients with chronic back pain and extra-articular features related to axSpA,” the authors wrote.

SOURCE:

The study was led by Walter P. Maksymowych, MB ChB, University of Alberta, Edmonton, Alberta, Canada. It was published online in Arthritis & Rheumatology.

LIMITATIONS: 

MRI readers had to rely on their own expertise to decide if an MRI was indeed positive and thus indicative of axSpA. This study included only patients with undiagnosed back pain, and a longer follow-up duration could have led to a higher number of patients being diagnosed with axial inflammation. In SASPIC-1, local rheumatologists conducted MRI evaluations of the spinal lesions only when necessary, while in SASPIC-2, MRI of only the sacroiliac joints was required.

DISCLOSURES:

SASPIC-1 was supported by AbbVie Canada and Janssen Canada, and SASPIC-2 was supported by AbbVie Canada. The authors disclosed receiving grants, consulting fees, speaking fees, and/or honoraria and having other ties with AbbVie and several other pharmaceutical companies.

This article was created using several editorial tools, including AI, as part of the process. Human editors reviewed this content before publication. A version of this article first appeared on Medscape.com.

A new report on the preventability of dementia is both exciting and paradigm-shifting. The new study, published in The Lancet by the Lancet Commission on Dementia, estimates that close to 50% of cases of dementia worldwide can be prevented or delayed by improving 14 modifiable risk factors. 

This is paradigm-shifting because dementia is often perceived as an inevitable consequence of the aging process, with a major genetic component. But this study suggests that modifying these risk factors can benefit everyone, irrespective of genetic risk, and that it’s important to have a life-course approach. It’s never too early or too late to start to modify these factors. 

We’ve known for a long time that many chronic diseases are highly preventable and modifiable. Some that come to mind are type 2 diabetes, coronary heart disease, and even certain forms of cancer. Modifiable risk factors include cigarette smoking, diet, physical activity, and maintaining a healthy weight. This study suggests that many of the same risk factors and more are relevant to reducing risk for dementia. 

Let’s go through the risk factors, many of which are behavioral. These risk factors include lifestyle factors such as lack of physical activity, cigarette smoking, excessive alcohol consumption, and obesity. The cardiovascular or vascular-specific risk factors include not only those behavioral factors but also hypertension, high LDL cholesterol, and diabetes. Cognitive engagement–specific risk factors include social isolation, which is a major risk factor for dementia, as well as untreated hearing or vision loss, which can exacerbate social isolation and depression, and low educational attainment, which can be related to less cognitive engagement.

They also mention traumatic brain injury from an accident or contact sports without head protection as a risk factor, and the environmental risk factor of air pollution or poor air quality. 

Two of these risk factors are new since the previous report in 2020: elevated LDL cholesterol and untreated vision loss, both of which are quite treatable. Overall, these findings suggest that a lot can be done to lower dementia risk, but it requires individual behavior modifications as well as a comprehensive approach with involvement of the healthcare system for improved screening, access, and public policy to reduce air pollution.

Some of these risk factors are more relevant to women, especially the social isolation that is so common later in life in women. In the United States, close to two out of three patients with dementia are women.

So, informing our patients about these risk factors and what can be done in terms of behavior modification, increased screening, and treatment for these conditions can go a long way in helping our patients reduce their risk for dementia.
 

Dr. Manson is professor of medicine and the Michael and Lee Bell Professor of Women’s Health, Harvard Medical School, chief, Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, and past president, North American Menopause Society, 2011-2012. She disclosed receiving study pill donation and infrastructure support from Mars Symbioscience (for the COSMOS trial).

A version of this article appeared on Medscape.com.

A new report on the preventability of dementia is both exciting and paradigm-shifting. The new study, published in The Lancet by the Lancet Commission on Dementia, estimates that close to 50% of cases of dementia worldwide can be prevented or delayed by improving 14 modifiable risk factors. 

This is paradigm-shifting because dementia is often perceived as an inevitable consequence of the aging process, with a major genetic component. But this study suggests that modifying these risk factors can benefit everyone, irrespective of genetic risk, and that it’s important to have a life-course approach. It’s never too early or too late to start to modify these factors. 

We’ve known for a long time that many chronic diseases are highly preventable and modifiable. Some that come to mind are type 2 diabetes, coronary heart disease, and even certain forms of cancer. Modifiable risk factors include cigarette smoking, diet, physical activity, and maintaining a healthy weight. This study suggests that many of the same risk factors and more are relevant to reducing risk for dementia. 

Let’s go through the risk factors, many of which are behavioral. These risk factors include lifestyle factors such as lack of physical activity, cigarette smoking, excessive alcohol consumption, and obesity. The cardiovascular or vascular-specific risk factors include not only those behavioral factors but also hypertension, high LDL cholesterol, and diabetes. Cognitive engagement–specific risk factors include social isolation, which is a major risk factor for dementia, as well as untreated hearing or vision loss, which can exacerbate social isolation and depression, and low educational attainment, which can be related to less cognitive engagement.

They also mention traumatic brain injury from an accident or contact sports without head protection as a risk factor, and the environmental risk factor of air pollution or poor air quality. 

Two of these risk factors are new since the previous report in 2020: elevated LDL cholesterol and untreated vision loss, both of which are quite treatable. Overall, these findings suggest that a lot can be done to lower dementia risk, but it requires individual behavior modifications as well as a comprehensive approach with involvement of the healthcare system for improved screening, access, and public policy to reduce air pollution.

Some of these risk factors are more relevant to women, especially the social isolation that is so common later in life in women. In the United States, close to two out of three patients with dementia are women.

So, informing our patients about these risk factors and what can be done in terms of behavior modification, increased screening, and treatment for these conditions can go a long way in helping our patients reduce their risk for dementia.
 

Dr. Manson is professor of medicine and the Michael and Lee Bell Professor of Women’s Health, Harvard Medical School, chief, Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, and past president, North American Menopause Society, 2011-2012. She disclosed receiving study pill donation and infrastructure support from Mars Symbioscience (for the COSMOS trial).

A version of this article appeared on Medscape.com.

A new report on the preventability of dementia is both exciting and paradigm-shifting. The new study, published in The Lancet by the Lancet Commission on Dementia, estimates that close to 50% of cases of dementia worldwide can be prevented or delayed by improving 14 modifiable risk factors. 

This is paradigm-shifting because dementia is often perceived as an inevitable consequence of the aging process, with a major genetic component. But this study suggests that modifying these risk factors can benefit everyone, irrespective of genetic risk, and that it’s important to have a life-course approach. It’s never too early or too late to start to modify these factors. 

We’ve known for a long time that many chronic diseases are highly preventable and modifiable. Some that come to mind are type 2 diabetes, coronary heart disease, and even certain forms of cancer. Modifiable risk factors include cigarette smoking, diet, physical activity, and maintaining a healthy weight. This study suggests that many of the same risk factors and more are relevant to reducing risk for dementia. 

Let’s go through the risk factors, many of which are behavioral. These risk factors include lifestyle factors such as lack of physical activity, cigarette smoking, excessive alcohol consumption, and obesity. The cardiovascular or vascular-specific risk factors include not only those behavioral factors but also hypertension, high LDL cholesterol, and diabetes. Cognitive engagement–specific risk factors include social isolation, which is a major risk factor for dementia, as well as untreated hearing or vision loss, which can exacerbate social isolation and depression, and low educational attainment, which can be related to less cognitive engagement.

They also mention traumatic brain injury from an accident or contact sports without head protection as a risk factor, and the environmental risk factor of air pollution or poor air quality. 

Two of these risk factors are new since the previous report in 2020: elevated LDL cholesterol and untreated vision loss, both of which are quite treatable. Overall, these findings suggest that a lot can be done to lower dementia risk, but it requires individual behavior modifications as well as a comprehensive approach with involvement of the healthcare system for improved screening, access, and public policy to reduce air pollution.

Some of these risk factors are more relevant to women, especially the social isolation that is so common later in life in women. In the United States, close to two out of three patients with dementia are women.

So, informing our patients about these risk factors and what can be done in terms of behavior modification, increased screening, and treatment for these conditions can go a long way in helping our patients reduce their risk for dementia.
 

Dr. Manson is professor of medicine and the Michael and Lee Bell Professor of Women’s Health, Harvard Medical School, chief, Division of Preventive Medicine, Brigham and Women’s Hospital, Boston, and past president, North American Menopause Society, 2011-2012. She disclosed receiving study pill donation and infrastructure support from Mars Symbioscience (for the COSMOS trial).

A version of this article appeared on Medscape.com.

Rising consolidation among pharmacy benefit managers (PBMs) allows the companies to profit at the expense of patients and independent pharmacists. That’s the conclusion of a recent Federal Trade Commission (FTC) report on interim findings from the agency’s ongoing investigation of PBMs. 

Lawmakers are increasingly scrutinizing the industry amid growing concern among physicians and consumers about how PBMs exploit their market dominance. The top six PBMs managed 94% of US drug claims in 2023, with the majority handled by the industry’s three giants: CVS Caremark, Cigna’s Express Scripts, and United Healthcare’s OptumRx.

PBMs manage prescription drug benefits for health insurers, Medicare Part D drug plans, and large employers. They act as middlemen between health insurers and pharmacies, developing formularies of covered drugs and promising savings from the discounts and rebates they negotiate with drugmakers.

The FTC’s interim report found that the giant PBMs often exercise significant control over what drugs are available and at what price and which pharmacies patients can use to access their prescribed medications. Consumers suffer as a result, the report concluded.

Madelaine A. Feldman, MD, vice president for advocacy and government affairs for the Coalition of State Rheumatology Organizations, shared her perspective on the FTC report in an email Q&A with this news organization. She is affiliated with The Rheumatology Group, based in Metairie, Louisiana. 

Dr. Feldman has long tracked the PBM industry and appeared as a witness before influential government panels, including the House Energy and Commerce Committee. She has highlighted for lawmakers the challenges physicians face in helping patients get needed medicines. 

For example, she shared cases of PBMs steering patients toward the more expensive of three widely used rheumatoid arthritis medicines that have a similar mechanism of action, the Janus kinase (JAK) inhibitors, Dr. Feldman said. 

One of the drugs cost roughly half of the other two — about $30,000 per year vs $65,000-$70,000. Yet only the two expensive drugs were included in the PBM formulary. As a result, the cheapest drug holds only a sliver of market share; the remainder is dominated by the two expensive products, she told the House Oversight and Accountability Committee in 2021.

This Q&A has been edited for length and clarity.

What would you want federal and state policymakers to do in response to the FTC’s report?

I think Congress needs to clearly delineate the differences between anticompetitive pharmacy issues, drug pricing issues, and their effect on formulary construction issues.

Lawmakers should demand more transparency and consider legislation that would remove perverse incentives that prompt PBMs to choose higher priced drugs for their formularies. 

That may require other regulatory or legislative actions to ensure lower prices (not higher kickbacks) are incentivized. Ultimately, in order to gain true competition within the health insurance business, these oligopolies of multiple businesses need to be broken up. Anything less seems to be nibbling around the edges and allows the Big Three to continue their “whack-a mole” in circumventing piecemeal regulatory and legislative policies.

You’ve followed PBM practices closely for many years. Was there anything in this interim FTC report that surprised you?

Though not surprised, I am glad that it was released because it had been a year in investigation and there were many requests for some type of substantive report. 

Two things that are missing that I feel are paramount are investigating how the three big PBMs are causing physical harm to patients as a result of the profit component in formulary construction and the profound financial impact of hidden PBM profit centers in self-insured employer health plans.

What we have seen over the years is the result of the perverse incentives for the PBMs to prefer the most profitable medications on their formularies. 

They use utilization management tools such as step therapy, nonmedical switching, and exclusions to maintain their formularies’ profitability. These tools have been shown to delay and deny the proper care of patients, resulting in not just monetary but physical harm as well. 

I would think the physical harm done to patients in manipulating the formularies should be addressed in this report as well and, in fact, may be the most important aspect of consumer protection of this issue.

In terms of the FTC’s mission to not “unduly burden” legitimate business, I would like to see the sector of self-insured employers addressed. 

The report details how PBMs steer prescriptions to their affiliated pharmacies. The FTC says that can push smaller pharmacies out of the market, ultimately leading to higher costs and lower quality services for people. What’s your perspective? 

Having more community pharmacies is better than having less. We are seeing more “pharmacy deserts” in rural areas as a result of many community pharmacies having to close.

The FTC voted 4-1 to allow staff to issue the interim report, with Commissioner Melissa Holyoak voting no. And some FTC commissioners seem divided on the usefulness of the report. Why?

Commissioner Holyoak states the “the Report leaves us without a better understanding of the competition concerns surrounding PBMs or how consumers are impacted by PBM practices.” 

I do agree with her that the harm to patients’ medical status was not even addressed as far as I could tell in this report. There are multiple news articles and reports on the harms inflicted upon patients by the UM tools that drive the construction of ever changing formularies, all based on contracting with manufacturers that result in the highest profit for the PBM.

Holyoak also states, “Among other critical conclusions, the Report does not address the seemingly contradictory conclusions in the 2005 Report that PBMs, including vertically owned PBMs, generated cost savings for consumers.” 

That may be true, but in 2005, the rise of PBMs was just beginning and the huge vertical and horizontal integration had yet to begin. Also, 2005 was still in the beginning of the biologic drug deluge, which did create competition to get on the formulary. Since then, PBMs have done nothing to control the rise in prices but instead, apparently have used the competition to get higher price concessions from manufacturers based on a percentage of the list price to line their pockets.

Commissioner Ferguson agreed with releasing the report but he had many issues with this report including the lack of PBM response. 

I do agree with him that the FTC should have used some type of “force” to get the information they needed from the PBMs. The Big Three are known for obfuscation and delaying providing information to legislative and regulatory agencies.
 

A version of this article appeared on Medscape.com.

Rising consolidation among pharmacy benefit managers (PBMs) allows the companies to profit at the expense of patients and independent pharmacists. That’s the conclusion of a recent Federal Trade Commission (FTC) report on interim findings from the agency’s ongoing investigation of PBMs. 

Lawmakers are increasingly scrutinizing the industry amid growing concern among physicians and consumers about how PBMs exploit their market dominance. The top six PBMs managed 94% of US drug claims in 2023, with the majority handled by the industry’s three giants: CVS Caremark, Cigna’s Express Scripts, and United Healthcare’s OptumRx.

PBMs manage prescription drug benefits for health insurers, Medicare Part D drug plans, and large employers. They act as middlemen between health insurers and pharmacies, developing formularies of covered drugs and promising savings from the discounts and rebates they negotiate with drugmakers.

The FTC’s interim report found that the giant PBMs often exercise significant control over what drugs are available and at what price and which pharmacies patients can use to access their prescribed medications. Consumers suffer as a result, the report concluded.

Madelaine A. Feldman, MD, vice president for advocacy and government affairs for the Coalition of State Rheumatology Organizations, shared her perspective on the FTC report in an email Q&A with this news organization. She is affiliated with The Rheumatology Group, based in Metairie, Louisiana. 

Dr. Feldman has long tracked the PBM industry and appeared as a witness before influential government panels, including the House Energy and Commerce Committee. She has highlighted for lawmakers the challenges physicians face in helping patients get needed medicines. 

For example, she shared cases of PBMs steering patients toward the more expensive of three widely used rheumatoid arthritis medicines that have a similar mechanism of action, the Janus kinase (JAK) inhibitors, Dr. Feldman said. 

One of the drugs cost roughly half of the other two — about $30,000 per year vs $65,000-$70,000. Yet only the two expensive drugs were included in the PBM formulary. As a result, the cheapest drug holds only a sliver of market share; the remainder is dominated by the two expensive products, she told the House Oversight and Accountability Committee in 2021.

This Q&A has been edited for length and clarity.

What would you want federal and state policymakers to do in response to the FTC’s report?

I think Congress needs to clearly delineate the differences between anticompetitive pharmacy issues, drug pricing issues, and their effect on formulary construction issues.

Lawmakers should demand more transparency and consider legislation that would remove perverse incentives that prompt PBMs to choose higher priced drugs for their formularies. 

That may require other regulatory or legislative actions to ensure lower prices (not higher kickbacks) are incentivized. Ultimately, in order to gain true competition within the health insurance business, these oligopolies of multiple businesses need to be broken up. Anything less seems to be nibbling around the edges and allows the Big Three to continue their “whack-a mole” in circumventing piecemeal regulatory and legislative policies.

You’ve followed PBM practices closely for many years. Was there anything in this interim FTC report that surprised you?

Though not surprised, I am glad that it was released because it had been a year in investigation and there were many requests for some type of substantive report. 

Two things that are missing that I feel are paramount are investigating how the three big PBMs are causing physical harm to patients as a result of the profit component in formulary construction and the profound financial impact of hidden PBM profit centers in self-insured employer health plans.

What we have seen over the years is the result of the perverse incentives for the PBMs to prefer the most profitable medications on their formularies. 

They use utilization management tools such as step therapy, nonmedical switching, and exclusions to maintain their formularies’ profitability. These tools have been shown to delay and deny the proper care of patients, resulting in not just monetary but physical harm as well. 

I would think the physical harm done to patients in manipulating the formularies should be addressed in this report as well and, in fact, may be the most important aspect of consumer protection of this issue.

In terms of the FTC’s mission to not “unduly burden” legitimate business, I would like to see the sector of self-insured employers addressed. 

The report details how PBMs steer prescriptions to their affiliated pharmacies. The FTC says that can push smaller pharmacies out of the market, ultimately leading to higher costs and lower quality services for people. What’s your perspective? 

Having more community pharmacies is better than having less. We are seeing more “pharmacy deserts” in rural areas as a result of many community pharmacies having to close.

The FTC voted 4-1 to allow staff to issue the interim report, with Commissioner Melissa Holyoak voting no. And some FTC commissioners seem divided on the usefulness of the report. Why?

Commissioner Holyoak states the “the Report leaves us without a better understanding of the competition concerns surrounding PBMs or how consumers are impacted by PBM practices.” 

I do agree with her that the harm to patients’ medical status was not even addressed as far as I could tell in this report. There are multiple news articles and reports on the harms inflicted upon patients by the UM tools that drive the construction of ever changing formularies, all based on contracting with manufacturers that result in the highest profit for the PBM.

Holyoak also states, “Among other critical conclusions, the Report does not address the seemingly contradictory conclusions in the 2005 Report that PBMs, including vertically owned PBMs, generated cost savings for consumers.” 

That may be true, but in 2005, the rise of PBMs was just beginning and the huge vertical and horizontal integration had yet to begin. Also, 2005 was still in the beginning of the biologic drug deluge, which did create competition to get on the formulary. Since then, PBMs have done nothing to control the rise in prices but instead, apparently have used the competition to get higher price concessions from manufacturers based on a percentage of the list price to line their pockets.

Commissioner Ferguson agreed with releasing the report but he had many issues with this report including the lack of PBM response. 

I do agree with him that the FTC should have used some type of “force” to get the information they needed from the PBMs. The Big Three are known for obfuscation and delaying providing information to legislative and regulatory agencies.
 

A version of this article appeared on Medscape.com.

Rising consolidation among pharmacy benefit managers (PBMs) allows the companies to profit at the expense of patients and independent pharmacists. That’s the conclusion of a recent Federal Trade Commission (FTC) report on interim findings from the agency’s ongoing investigation of PBMs. 

Lawmakers are increasingly scrutinizing the industry amid growing concern among physicians and consumers about how PBMs exploit their market dominance. The top six PBMs managed 94% of US drug claims in 2023, with the majority handled by the industry’s three giants: CVS Caremark, Cigna’s Express Scripts, and United Healthcare’s OptumRx.

PBMs manage prescription drug benefits for health insurers, Medicare Part D drug plans, and large employers. They act as middlemen between health insurers and pharmacies, developing formularies of covered drugs and promising savings from the discounts and rebates they negotiate with drugmakers.

The FTC’s interim report found that the giant PBMs often exercise significant control over what drugs are available and at what price and which pharmacies patients can use to access their prescribed medications. Consumers suffer as a result, the report concluded.

Madelaine A. Feldman, MD, vice president for advocacy and government affairs for the Coalition of State Rheumatology Organizations, shared her perspective on the FTC report in an email Q&A with this news organization. She is affiliated with The Rheumatology Group, based in Metairie, Louisiana. 

Dr. Feldman has long tracked the PBM industry and appeared as a witness before influential government panels, including the House Energy and Commerce Committee. She has highlighted for lawmakers the challenges physicians face in helping patients get needed medicines. 

For example, she shared cases of PBMs steering patients toward the more expensive of three widely used rheumatoid arthritis medicines that have a similar mechanism of action, the Janus kinase (JAK) inhibitors, Dr. Feldman said. 

One of the drugs cost roughly half of the other two — about $30,000 per year vs $65,000-$70,000. Yet only the two expensive drugs were included in the PBM formulary. As a result, the cheapest drug holds only a sliver of market share; the remainder is dominated by the two expensive products, she told the House Oversight and Accountability Committee in 2021.

This Q&A has been edited for length and clarity.

What would you want federal and state policymakers to do in response to the FTC’s report?

I think Congress needs to clearly delineate the differences between anticompetitive pharmacy issues, drug pricing issues, and their effect on formulary construction issues.

Lawmakers should demand more transparency and consider legislation that would remove perverse incentives that prompt PBMs to choose higher priced drugs for their formularies. 

That may require other regulatory or legislative actions to ensure lower prices (not higher kickbacks) are incentivized. Ultimately, in order to gain true competition within the health insurance business, these oligopolies of multiple businesses need to be broken up. Anything less seems to be nibbling around the edges and allows the Big Three to continue their “whack-a mole” in circumventing piecemeal regulatory and legislative policies.

You’ve followed PBM practices closely for many years. Was there anything in this interim FTC report that surprised you?

Though not surprised, I am glad that it was released because it had been a year in investigation and there were many requests for some type of substantive report. 

Two things that are missing that I feel are paramount are investigating how the three big PBMs are causing physical harm to patients as a result of the profit component in formulary construction and the profound financial impact of hidden PBM profit centers in self-insured employer health plans.

What we have seen over the years is the result of the perverse incentives for the PBMs to prefer the most profitable medications on their formularies. 

They use utilization management tools such as step therapy, nonmedical switching, and exclusions to maintain their formularies’ profitability. These tools have been shown to delay and deny the proper care of patients, resulting in not just monetary but physical harm as well. 

I would think the physical harm done to patients in manipulating the formularies should be addressed in this report as well and, in fact, may be the most important aspect of consumer protection of this issue.

In terms of the FTC’s mission to not “unduly burden” legitimate business, I would like to see the sector of self-insured employers addressed. 

The report details how PBMs steer prescriptions to their affiliated pharmacies. The FTC says that can push smaller pharmacies out of the market, ultimately leading to higher costs and lower quality services for people. What’s your perspective? 

Having more community pharmacies is better than having less. We are seeing more “pharmacy deserts” in rural areas as a result of many community pharmacies having to close.

The FTC voted 4-1 to allow staff to issue the interim report, with Commissioner Melissa Holyoak voting no. And some FTC commissioners seem divided on the usefulness of the report. Why?

Commissioner Holyoak states the “the Report leaves us without a better understanding of the competition concerns surrounding PBMs or how consumers are impacted by PBM practices.” 

I do agree with her that the harm to patients’ medical status was not even addressed as far as I could tell in this report. There are multiple news articles and reports on the harms inflicted upon patients by the UM tools that drive the construction of ever changing formularies, all based on contracting with manufacturers that result in the highest profit for the PBM.

Holyoak also states, “Among other critical conclusions, the Report does not address the seemingly contradictory conclusions in the 2005 Report that PBMs, including vertically owned PBMs, generated cost savings for consumers.” 

That may be true, but in 2005, the rise of PBMs was just beginning and the huge vertical and horizontal integration had yet to begin. Also, 2005 was still in the beginning of the biologic drug deluge, which did create competition to get on the formulary. Since then, PBMs have done nothing to control the rise in prices but instead, apparently have used the competition to get higher price concessions from manufacturers based on a percentage of the list price to line their pockets.

Commissioner Ferguson agreed with releasing the report but he had many issues with this report including the lack of PBM response. 

I do agree with him that the FTC should have used some type of “force” to get the information they needed from the PBMs. The Big Three are known for obfuscation and delaying providing information to legislative and regulatory agencies.
 

A version of this article appeared on Medscape.com.

Key clinical point: Rimegepant was more effective than placebo in reducing pain and most bothersome symptoms in patients with moderate to severe migraine, while also showing favorable safety and tolerability.

Major findings: At 2 hours post dose, rimegepant was more effective than placebo in providing freedom from pain (risk difference 4.9; P = .0298) and the most bothersome symptoms (risk difference 8.9; P = .0016). Similar proportions of participants in the rimegepant vs placebo group experienced at least one adverse event (12.6% vs 10.7%), with nausea (0.9% vs 1.1%) and dizziness (0.7% vs 0.4%) being the most common adverse events.

Study details: This randomized, double-blind, placebo-controlled trial (Safety and Efficacy Study in Adult Subjects With Acute Migraines, NCT03235479)  included 1084 patients with migraine with or without aura who were randomly assigned to receive 75 mg rimegepant (n = 543) or placebo (n = 541).

Disclosures: This study was supported by Biohaven Pharmaceuticals (acquired by Pfizer, Inc.). Four authors declared being employees or stockholders of Biohaven Pharmaceuticals, Pfizer, or having other ties with various sources.

Source: Lipton RB, Thiry A, Morris BA, Croop R. Efficacy and safety of rimegepant 75 mg oral tablet, a CGRP receptor antagonist, for the acute treatment of migraine: A randomized, double-blind, placebo-controlled trial. J Pain Res. 2024;17:2431-2441 (Jul 22). Doi: 10.2147/JPR.S453806 Source

Key clinical point: Rimegepant was more effective than placebo in reducing pain and most bothersome symptoms in patients with moderate to severe migraine, while also showing favorable safety and tolerability.

Major findings: At 2 hours post dose, rimegepant was more effective than placebo in providing freedom from pain (risk difference 4.9; P = .0298) and the most bothersome symptoms (risk difference 8.9; P = .0016). Similar proportions of participants in the rimegepant vs placebo group experienced at least one adverse event (12.6% vs 10.7%), with nausea (0.9% vs 1.1%) and dizziness (0.7% vs 0.4%) being the most common adverse events.

Study details: This randomized, double-blind, placebo-controlled trial (Safety and Efficacy Study in Adult Subjects With Acute Migraines, NCT03235479)  included 1084 patients with migraine with or without aura who were randomly assigned to receive 75 mg rimegepant (n = 543) or placebo (n = 541).

Disclosures: This study was supported by Biohaven Pharmaceuticals (acquired by Pfizer, Inc.). Four authors declared being employees or stockholders of Biohaven Pharmaceuticals, Pfizer, or having other ties with various sources.

Source: Lipton RB, Thiry A, Morris BA, Croop R. Efficacy and safety of rimegepant 75 mg oral tablet, a CGRP receptor antagonist, for the acute treatment of migraine: A randomized, double-blind, placebo-controlled trial. J Pain Res. 2024;17:2431-2441 (Jul 22). Doi: 10.2147/JPR.S453806 Source

Key clinical point: Rimegepant was more effective than placebo in reducing pain and most bothersome symptoms in patients with moderate to severe migraine, while also showing favorable safety and tolerability.

Major findings: At 2 hours post dose, rimegepant was more effective than placebo in providing freedom from pain (risk difference 4.9; P = .0298) and the most bothersome symptoms (risk difference 8.9; P = .0016). Similar proportions of participants in the rimegepant vs placebo group experienced at least one adverse event (12.6% vs 10.7%), with nausea (0.9% vs 1.1%) and dizziness (0.7% vs 0.4%) being the most common adverse events.

Study details: This randomized, double-blind, placebo-controlled trial (Safety and Efficacy Study in Adult Subjects With Acute Migraines, NCT03235479)  included 1084 patients with migraine with or without aura who were randomly assigned to receive 75 mg rimegepant (n = 543) or placebo (n = 541).

Disclosures: This study was supported by Biohaven Pharmaceuticals (acquired by Pfizer, Inc.). Four authors declared being employees or stockholders of Biohaven Pharmaceuticals, Pfizer, or having other ties with various sources.

Source: Lipton RB, Thiry A, Morris BA, Croop R. Efficacy and safety of rimegepant 75 mg oral tablet, a CGRP receptor antagonist, for the acute treatment of migraine: A randomized, double-blind, placebo-controlled trial. J Pain Res. 2024;17:2431-2441 (Jul 22). Doi: 10.2147/JPR.S453806 Source

Key clinical point: This Mendelian randomization study showed that leisure screen time (LST) worsens migraine, whereas moderate to vigorous physical activity (MVPA) alleviates it, with hypertension and diastolic blood pressure (DBP) being responsible for the effects of MVPA or LST on migraine.

Major findings: Genetically predicted LST was associated with a significantly increased risk for migraine (odds ratio [OR] 1.28; P < .001), whereas MVPA was linked to a significantly reduced risk (OR 0.73; P = .000006). Hypertension mediated 4.86% and 24.81% of the effects of MVPA and LST on migraine risk, respectively, and DBP accounted for 4.66% of the effects of MVPA on migraine risk.

Study details: This study included 18,477 patients with migraine and 287,837 control individuals without migraine from the FinnGen consortium and 26,052 patients with migraine and 487,214 control individuals without migraine from the large-scale genome-wide association studies.

Disclosures: This study was supported by grants from the National Natural Science Foundation of China and others. The authors declared no conflicts of interest.

Source: Gan Q, Song E, Zhang L, et al. The role of hypertension in the relationship between leisure screen time, physical activity and migraine: A 2-sample Mendelian randomization study. J Headache Pain. 2024;25:122 (Jul 24). Doi: 10.1186/s10194-024-01820-4 Source

Key clinical point: This Mendelian randomization study showed that leisure screen time (LST) worsens migraine, whereas moderate to vigorous physical activity (MVPA) alleviates it, with hypertension and diastolic blood pressure (DBP) being responsible for the effects of MVPA or LST on migraine.

Major findings: Genetically predicted LST was associated with a significantly increased risk for migraine (odds ratio [OR] 1.28; P < .001), whereas MVPA was linked to a significantly reduced risk (OR 0.73; P = .000006). Hypertension mediated 4.86% and 24.81% of the effects of MVPA and LST on migraine risk, respectively, and DBP accounted for 4.66% of the effects of MVPA on migraine risk.

Study details: This study included 18,477 patients with migraine and 287,837 control individuals without migraine from the FinnGen consortium and 26,052 patients with migraine and 487,214 control individuals without migraine from the large-scale genome-wide association studies.

Disclosures: This study was supported by grants from the National Natural Science Foundation of China and others. The authors declared no conflicts of interest.

Source: Gan Q, Song E, Zhang L, et al. The role of hypertension in the relationship between leisure screen time, physical activity and migraine: A 2-sample Mendelian randomization study. J Headache Pain. 2024;25:122 (Jul 24). Doi: 10.1186/s10194-024-01820-4 Source

Key clinical point: This Mendelian randomization study showed that leisure screen time (LST) worsens migraine, whereas moderate to vigorous physical activity (MVPA) alleviates it, with hypertension and diastolic blood pressure (DBP) being responsible for the effects of MVPA or LST on migraine.

Major findings: Genetically predicted LST was associated with a significantly increased risk for migraine (odds ratio [OR] 1.28; P < .001), whereas MVPA was linked to a significantly reduced risk (OR 0.73; P = .000006). Hypertension mediated 4.86% and 24.81% of the effects of MVPA and LST on migraine risk, respectively, and DBP accounted for 4.66% of the effects of MVPA on migraine risk.

Study details: This study included 18,477 patients with migraine and 287,837 control individuals without migraine from the FinnGen consortium and 26,052 patients with migraine and 487,214 control individuals without migraine from the large-scale genome-wide association studies.

Disclosures: This study was supported by grants from the National Natural Science Foundation of China and others. The authors declared no conflicts of interest.

Source: Gan Q, Song E, Zhang L, et al. The role of hypertension in the relationship between leisure screen time, physical activity and migraine: A 2-sample Mendelian randomization study. J Headache Pain. 2024;25:122 (Jul 24). Doi: 10.1186/s10194-024-01820-4 Source

Key clinical point: The meta-analysis showed that atogepant was effective and well tolerated in patients with migraine in a non–dose-dependent manner, with rare incidences of serious treatment-emergent adverse events (TEAE) reported.

Major findings: Atogepant vs placebo led to a significant reduction in monthly migraine days (standardized mean difference [SMD] −0.40; P = .00001) and headache days (SMD −0.39; P = .00001), with consistent results observed across all dosage groups. The risk for TEAE (relative risk [RR] 1.11; P = .02) was significantly higher in the atogepant vs placebo group, with constipation (RR 2.55; P < .00001), nausea (RR 2.19; P < .00001), and urinary tract infection (RR 1.49; P = .03) being the most common.

Study details: This meta-analysis of four randomized controlled trials included 2813 patients with migraine who were treated with atogepant (10 mg, 30 mg, or 60 mg).

Disclosures: This study was supported by the Chongqing Clinical Pharmacy Key Specialties Construction Project, China. The authors declared no conflicts of interest.

Source: Hou M, Luo X, He S, et al. Efficacy and safety of atogepant, a small molecule CGRP receptor antagonist, for the preventive treatment of migraine: A systematic review and meta-analysis. J Headache Pain. 2024;25:116 (Jul 19). Doi: 10.1186/s10194-024-01822-2 Source

Key clinical point: The meta-analysis showed that atogepant was effective and well tolerated in patients with migraine in a non–dose-dependent manner, with rare incidences of serious treatment-emergent adverse events (TEAE) reported.

Major findings: Atogepant vs placebo led to a significant reduction in monthly migraine days (standardized mean difference [SMD] −0.40; P = .00001) and headache days (SMD −0.39; P = .00001), with consistent results observed across all dosage groups. The risk for TEAE (relative risk [RR] 1.11; P = .02) was significantly higher in the atogepant vs placebo group, with constipation (RR 2.55; P < .00001), nausea (RR 2.19; P < .00001), and urinary tract infection (RR 1.49; P = .03) being the most common.

Study details: This meta-analysis of four randomized controlled trials included 2813 patients with migraine who were treated with atogepant (10 mg, 30 mg, or 60 mg).

Disclosures: This study was supported by the Chongqing Clinical Pharmacy Key Specialties Construction Project, China. The authors declared no conflicts of interest.

Source: Hou M, Luo X, He S, et al. Efficacy and safety of atogepant, a small molecule CGRP receptor antagonist, for the preventive treatment of migraine: A systematic review and meta-analysis. J Headache Pain. 2024;25:116 (Jul 19). Doi: 10.1186/s10194-024-01822-2 Source

Key clinical point: The meta-analysis showed that atogepant was effective and well tolerated in patients with migraine in a non–dose-dependent manner, with rare incidences of serious treatment-emergent adverse events (TEAE) reported.

Major findings: Atogepant vs placebo led to a significant reduction in monthly migraine days (standardized mean difference [SMD] −0.40; P = .00001) and headache days (SMD −0.39; P = .00001), with consistent results observed across all dosage groups. The risk for TEAE (relative risk [RR] 1.11; P = .02) was significantly higher in the atogepant vs placebo group, with constipation (RR 2.55; P < .00001), nausea (RR 2.19; P < .00001), and urinary tract infection (RR 1.49; P = .03) being the most common.

Study details: This meta-analysis of four randomized controlled trials included 2813 patients with migraine who were treated with atogepant (10 mg, 30 mg, or 60 mg).

Disclosures: This study was supported by the Chongqing Clinical Pharmacy Key Specialties Construction Project, China. The authors declared no conflicts of interest.

Source: Hou M, Luo X, He S, et al. Efficacy and safety of atogepant, a small molecule CGRP receptor antagonist, for the preventive treatment of migraine: A systematic review and meta-analysis. J Headache Pain. 2024;25:116 (Jul 19). Doi: 10.1186/s10194-024-01822-2 Source

Key clinical point: The presence of migraine aura exacerbated migraine-related disability, mainly due to concurrent non-pain symptoms of migraine rather than the aura itself.

Major findings: The presence of aura on the first day of the migraine episode was significantly associated with increased odds of disability across all migraine days (odds ratio [OR] 1.40; P < .001); and non-pain symptoms, such as allodynia, photophobia, phonophobia, and nausea or vomiting (P < .001 for all). No association was observed between aura and headache-related migraine symptoms.

Study details: This observational prospective cohort study included 554 adults with episodic migraine, with complete data on migraine symptoms and psychological variables collected daily for 90 days using the N-1 Headache™ digital app (N = 11,156 total migraine days).

Disclosures: This study did not receive funding from any sources. The authors declared no conflicts of interest.

Source: Denney DE, Lee AA, Landy SH, Smitherman TA. Headache-related disability as a function of migraine aura: A daily diary study. Headache. 2024 (Aug 1). Doi: 10.1111/head.14796 Source

Key clinical point: The presence of migraine aura exacerbated migraine-related disability, mainly due to concurrent non-pain symptoms of migraine rather than the aura itself.

Major findings: The presence of aura on the first day of the migraine episode was significantly associated with increased odds of disability across all migraine days (odds ratio [OR] 1.40; P < .001); and non-pain symptoms, such as allodynia, photophobia, phonophobia, and nausea or vomiting (P < .001 for all). No association was observed between aura and headache-related migraine symptoms.

Study details: This observational prospective cohort study included 554 adults with episodic migraine, with complete data on migraine symptoms and psychological variables collected daily for 90 days using the N-1 Headache™ digital app (N = 11,156 total migraine days).

Disclosures: This study did not receive funding from any sources. The authors declared no conflicts of interest.

Source: Denney DE, Lee AA, Landy SH, Smitherman TA. Headache-related disability as a function of migraine aura: A daily diary study. Headache. 2024 (Aug 1). Doi: 10.1111/head.14796 Source

Key clinical point: The presence of migraine aura exacerbated migraine-related disability, mainly due to concurrent non-pain symptoms of migraine rather than the aura itself.

Major findings: The presence of aura on the first day of the migraine episode was significantly associated with increased odds of disability across all migraine days (odds ratio [OR] 1.40; P < .001); and non-pain symptoms, such as allodynia, photophobia, phonophobia, and nausea or vomiting (P < .001 for all). No association was observed between aura and headache-related migraine symptoms.

Study details: This observational prospective cohort study included 554 adults with episodic migraine, with complete data on migraine symptoms and psychological variables collected daily for 90 days using the N-1 Headache™ digital app (N = 11,156 total migraine days).

Disclosures: This study did not receive funding from any sources. The authors declared no conflicts of interest.

Source: Denney DE, Lee AA, Landy SH, Smitherman TA. Headache-related disability as a function of migraine aura: A daily diary study. Headache. 2024 (Aug 1). Doi: 10.1111/head.14796 Source

Key clinical point: Patients with migraine and a history of abuse had a greater migraine burden than those without a history of abuse, with this association being mediated by depression and anxiety.

Major findings: Patients with migraine who did vs did not have a history of abuse had significantly higher migraine-specific disability (68 vs 49), subjective cognitive impairment (10 vs 7), and pain interference (65 vs 62.5) scores, as well as greater overall work impairment (47.6% vs 38.6%) and activity impairment (49.3% vs 39.3%; all P < .001). Depression and anxiety mediated the association between history of abuse and migraine burden.

Study details: This cross-sectional study included 866 patients with migraine from the American Registry for Migraine Research, of whom 316 (36.5 %) had a history of abuse.

Disclosures: This study was supported by the American Migraine Foundation and American Academy of Neurology. Some authors declared receiving research funding from or having other ties with various sources.

Source: Trivedi M, Dumkrieger G, Chong CD, et al. A history of abuse is associated with more severe migraine- and pain-related disability: Results from the American Registry for Migraine Research. Headache. 2024 (Jul 25). Doi: 10.1111/head.14787 Source

Key clinical point: Patients with migraine and a history of abuse had a greater migraine burden than those without a history of abuse, with this association being mediated by depression and anxiety.

Major findings: Patients with migraine who did vs did not have a history of abuse had significantly higher migraine-specific disability (68 vs 49), subjective cognitive impairment (10 vs 7), and pain interference (65 vs 62.5) scores, as well as greater overall work impairment (47.6% vs 38.6%) and activity impairment (49.3% vs 39.3%; all P < .001). Depression and anxiety mediated the association between history of abuse and migraine burden.

Study details: This cross-sectional study included 866 patients with migraine from the American Registry for Migraine Research, of whom 316 (36.5 %) had a history of abuse.

Disclosures: This study was supported by the American Migraine Foundation and American Academy of Neurology. Some authors declared receiving research funding from or having other ties with various sources.

Source: Trivedi M, Dumkrieger G, Chong CD, et al. A history of abuse is associated with more severe migraine- and pain-related disability: Results from the American Registry for Migraine Research. Headache. 2024 (Jul 25). Doi: 10.1111/head.14787 Source

Key clinical point: Patients with migraine and a history of abuse had a greater migraine burden than those without a history of abuse, with this association being mediated by depression and anxiety.

Major findings: Patients with migraine who did vs did not have a history of abuse had significantly higher migraine-specific disability (68 vs 49), subjective cognitive impairment (10 vs 7), and pain interference (65 vs 62.5) scores, as well as greater overall work impairment (47.6% vs 38.6%) and activity impairment (49.3% vs 39.3%; all P < .001). Depression and anxiety mediated the association between history of abuse and migraine burden.

Study details: This cross-sectional study included 866 patients with migraine from the American Registry for Migraine Research, of whom 316 (36.5 %) had a history of abuse.

Disclosures: This study was supported by the American Migraine Foundation and American Academy of Neurology. Some authors declared receiving research funding from or having other ties with various sources.

Source: Trivedi M, Dumkrieger G, Chong CD, et al. A history of abuse is associated with more severe migraine- and pain-related disability: Results from the American Registry for Migraine Research. Headache. 2024 (Jul 25). Doi: 10.1111/head.14787 Source

Key clinical point: Anti-calcitonin gene-related peptide (CGRP) monoclonal antibodies (mAb) were effective and showed a similar time to onset in patients with chronic migraine (CM), irrespective of disease duration.

Major findings: At 10-12 months of follow-up, anti-CGRP mAb reduced monthly migraine days by an average of 12 days across all tertiles of CM duration (P = .946). Additionally, monthly headache days and acute medication use significantly decreased from baseline to 10-12 months (P < .001) across all tertiles of CM duration, indicating no difference in the time to onset of anti-CGRP mAb across tertiles.

Study details: This cohort study included 335 patients with CM treated with anti-CGRP mAb for at least 12 months. Patients were categorized into different tertiles of CM duration: 0-7 years, 8-18 years, and 18-60 years.

Disclosures: This study did not disclose any funding sources. Four authors declared receiving personal fees from or having other ties with various sources.

Source: Ornello R, Baldini F, Onofri A, et al. Impact of duration of chronic migraine on long-term effectiveness of monoclonal antibodies targeting the calcitonin gene-related peptide pathway-A real-world study. Headache. 2024 (Jul 16). Doi: 10.1111/head.14788 Source

Key clinical point: Anti-calcitonin gene-related peptide (CGRP) monoclonal antibodies (mAb) were effective and showed a similar time to onset in patients with chronic migraine (CM), irrespective of disease duration.

Major findings: At 10-12 months of follow-up, anti-CGRP mAb reduced monthly migraine days by an average of 12 days across all tertiles of CM duration (P = .946). Additionally, monthly headache days and acute medication use significantly decreased from baseline to 10-12 months (P < .001) across all tertiles of CM duration, indicating no difference in the time to onset of anti-CGRP mAb across tertiles.

Study details: This cohort study included 335 patients with CM treated with anti-CGRP mAb for at least 12 months. Patients were categorized into different tertiles of CM duration: 0-7 years, 8-18 years, and 18-60 years.

Disclosures: This study did not disclose any funding sources. Four authors declared receiving personal fees from or having other ties with various sources.

Source: Ornello R, Baldini F, Onofri A, et al. Impact of duration of chronic migraine on long-term effectiveness of monoclonal antibodies targeting the calcitonin gene-related peptide pathway-A real-world study. Headache. 2024 (Jul 16). Doi: 10.1111/head.14788 Source

Key clinical point: Anti-calcitonin gene-related peptide (CGRP) monoclonal antibodies (mAb) were effective and showed a similar time to onset in patients with chronic migraine (CM), irrespective of disease duration.

Major findings: At 10-12 months of follow-up, anti-CGRP mAb reduced monthly migraine days by an average of 12 days across all tertiles of CM duration (P = .946). Additionally, monthly headache days and acute medication use significantly decreased from baseline to 10-12 months (P < .001) across all tertiles of CM duration, indicating no difference in the time to onset of anti-CGRP mAb across tertiles.

Study details: This cohort study included 335 patients with CM treated with anti-CGRP mAb for at least 12 months. Patients were categorized into different tertiles of CM duration: 0-7 years, 8-18 years, and 18-60 years.

Disclosures: This study did not disclose any funding sources. Four authors declared receiving personal fees from or having other ties with various sources.

Source: Ornello R, Baldini F, Onofri A, et al. Impact of duration of chronic migraine on long-term effectiveness of monoclonal antibodies targeting the calcitonin gene-related peptide pathway-A real-world study. Headache. 2024 (Jul 16). Doi: 10.1111/head.14788 Source