Neurology Reviews

The US Food and Drug Administration has granted accelerated approval to repotrectinib (Augtyro, Bristol Myers Squibb) for all locally advanced, unresectable, or metastatic solid tumors with an NTRK gene fusion that have progressed after initial treatment or that have no satisfactory alternative therapies.

The approval is a label expansion for the tyrosine kinase inhibitor (TKI), which received initial clearance in November 2023 for locally advanced or metastatic ROS1-positive non–small cell lung cancer. 

NTRK gene fusions are genetic abnormalities wherein part of the NTRK gene fuses with an unrelated gene. The abnormal gene can then produce an oncogenic protein. Although rare, these mutations are found in many cancer types.

The approval, for adult and pediatric patients aged 12 years or older, was based on the single-arm open-label TRIDENT-1 trial in 88 adults with locally advanced or metastatic NTRK gene fusion solid tumors.

In the 40 patients who were TKI-naive, the overall response rate was 58%, and the median duration of response was not estimable. In the 48 patients who had a TKI previously, the overall response rate was 50% and median duration of response was 9.9 months.

In 20% or more of participants, treatment caused dizziness, dysgeusia, peripheral neuropathy, constipation, dyspnea, fatigue, ataxia, cognitive impairment, muscular weakness, and nausea.

Labeling warns of central nervous system reactions, interstitial lung disease/pneumonitis, hepatotoxicity, myalgia with creatine phosphokinase elevation, hyperuricemia, bone fractures, and embryo-fetal toxicity.

The recommended dose is 160 mg orally once daily for 14 days then increased to 160 mg twice daily until disease progression or unacceptable toxicity.

Sixty 40-mg capsules cost around $7,644, according to drugs.com. 
 

A version of this article appeared on Medscape.com.

The US Food and Drug Administration has granted accelerated approval to repotrectinib (Augtyro, Bristol Myers Squibb) for all locally advanced, unresectable, or metastatic solid tumors with an NTRK gene fusion that have progressed after initial treatment or that have no satisfactory alternative therapies.

The approval is a label expansion for the tyrosine kinase inhibitor (TKI), which received initial clearance in November 2023 for locally advanced or metastatic ROS1-positive non–small cell lung cancer. 

NTRK gene fusions are genetic abnormalities wherein part of the NTRK gene fuses with an unrelated gene. The abnormal gene can then produce an oncogenic protein. Although rare, these mutations are found in many cancer types.

The approval, for adult and pediatric patients aged 12 years or older, was based on the single-arm open-label TRIDENT-1 trial in 88 adults with locally advanced or metastatic NTRK gene fusion solid tumors.

In the 40 patients who were TKI-naive, the overall response rate was 58%, and the median duration of response was not estimable. In the 48 patients who had a TKI previously, the overall response rate was 50% and median duration of response was 9.9 months.

In 20% or more of participants, treatment caused dizziness, dysgeusia, peripheral neuropathy, constipation, dyspnea, fatigue, ataxia, cognitive impairment, muscular weakness, and nausea.

Labeling warns of central nervous system reactions, interstitial lung disease/pneumonitis, hepatotoxicity, myalgia with creatine phosphokinase elevation, hyperuricemia, bone fractures, and embryo-fetal toxicity.

The recommended dose is 160 mg orally once daily for 14 days then increased to 160 mg twice daily until disease progression or unacceptable toxicity.

Sixty 40-mg capsules cost around $7,644, according to drugs.com. 
 

A version of this article appeared on Medscape.com.

The US Food and Drug Administration has granted accelerated approval to repotrectinib (Augtyro, Bristol Myers Squibb) for all locally advanced, unresectable, or metastatic solid tumors with an NTRK gene fusion that have progressed after initial treatment or that have no satisfactory alternative therapies.

The approval is a label expansion for the tyrosine kinase inhibitor (TKI), which received initial clearance in November 2023 for locally advanced or metastatic ROS1-positive non–small cell lung cancer. 

NTRK gene fusions are genetic abnormalities wherein part of the NTRK gene fuses with an unrelated gene. The abnormal gene can then produce an oncogenic protein. Although rare, these mutations are found in many cancer types.

The approval, for adult and pediatric patients aged 12 years or older, was based on the single-arm open-label TRIDENT-1 trial in 88 adults with locally advanced or metastatic NTRK gene fusion solid tumors.

In the 40 patients who were TKI-naive, the overall response rate was 58%, and the median duration of response was not estimable. In the 48 patients who had a TKI previously, the overall response rate was 50% and median duration of response was 9.9 months.

In 20% or more of participants, treatment caused dizziness, dysgeusia, peripheral neuropathy, constipation, dyspnea, fatigue, ataxia, cognitive impairment, muscular weakness, and nausea.

Labeling warns of central nervous system reactions, interstitial lung disease/pneumonitis, hepatotoxicity, myalgia with creatine phosphokinase elevation, hyperuricemia, bone fractures, and embryo-fetal toxicity.

The recommended dose is 160 mg orally once daily for 14 days then increased to 160 mg twice daily until disease progression or unacceptable toxicity.

Sixty 40-mg capsules cost around $7,644, according to drugs.com. 
 

A version of this article appeared on Medscape.com.

The largest US physician organization wrestled with the professional risks and rewards of artificial intelligence (AI) at its annual meeting, delaying action even as it adopted new policies on prior authorization and other concerns for clinicians and patients.

Physicians and medical students at the annual meeting of the American Medical Association (AMA) House of Delegates in Chicago intensely debated a report and two key resolutions on AI but could not reach consensus, pushing off decision-making until a future meeting in November.

One resolution would establish “augmented intelligence” as the preferred term for AI, reflecting the desired role of these tools in supporting — not making — physicians’ decisions. The other resolution focused on insurers’ use of AI in determining medical necessity.

(See specific policies adopted at the meeting, held June 8-12, below.)

A comprehensive AMA trustees’ report on AI considered additional issues including requirements for disclosing AI use, liability for harms due to flawed application of AI, data privacy, and cybersecurity.

The AMA intends to “continue to methodically assess these issues and make informed recommendations in proposing new policy,” said Bobby Mukkamala, MD, an otolaryngologist from Flint, Michigan, who became the AMA’s new president-elect.

AMA members at the meeting largely applauded the aim of these AI proposals, but some objected to parts of the trustees’ report.

They raised questions about what, exactly, constitutes an AI-powered service and whether all AI tools need the kind of guardrails the AMA may seek. There also were concerns about calls to make AI use more transparent.

While transparency might be an admirable goal, it might prove too hard to achieve given that AI-powered tools and products are already woven into medical practice in ways that physicians may not know or understand, said Christopher Libby, MD, MPH, a clinical informaticist and emergency physician at Cedars Sinai Medical Center in Los Angeles.

“It’s hard for the practicing clinician to know how every piece of technology works in order to describe it to the patient,” Dr. Libby said at the meeting. “How many people here can identify when algorithms are used in their EHR today?”

He suggested asking for more transparency from the companies that make and sell AI-powered software and tools to insurers and healthcare systems.

Steven H. Kroft, MD, the editor of the American Journal of Clinical Pathology, raised concerns about the unintended harm that unchecked use of AI may pose to scientific research.

He asked the AMA to address “a significant omission in an otherwise comprehensive report” — the need to protect the integrity of study results that can direct patient care.

“While sham science is not a new issue, large language models make it far easier for authors to generate fake papers and far harder for editors, reviewers, and publishers to identify them,” Dr. Kroft said. “This is a rapidly growing phenomenon that is threatening the integrity of the literature. These papers become embedded in the evidence bases that drive clinical decision-making.”

AMA has been working with specialty societies and outside AI experts to refine an effective set of recommendations. The new policies, once finalized, are intended to build on steps AMA already has taken, including last year releasing principles for AI development, deployment, and use.
 

Congress Mulling

The AMA delegates are far from alone in facing AI policy challenges.

Leaders in Congress also are examining AI guardrails, with influential panels such as the Senate Finance and House Energy and Commerce committees holding hearings.

A key congressional AI effort to watch is the expected implementation of a bipartisan Senate “road map,” which Senate Majority Leader Chuck Schumer (D-NY) and colleagues released in May, said Miranda A. Franco, a senior policy advisor at the law firm Holland & Knight.

The product of many months of deliberation, this Senate road map identifies priorities for future legislation, including:

• Creating appropriate guardrails and safety measures to protect patients.
• Making healthcare and biomedical data available for machine learning and data science research while carefully addressing privacy issues.
• Providing transparency for clinicians and the public about the use of AI in medical products and clinical support services, including the data used to train models.
• Examining the Centers for Medicare & Medicaid Services’ reimbursement mechanisms as well as guardrails to ensure accountability, appropriate use, and broad application of AI across all populations.

Congress likely will address issues of AI in healthcare in piecemeal fashion, taking on different aspects of these challenges at different times, Ms. Franco said. The Senate road map gives the key committees directions on where to proceed in their efforts to develop new laws.

“I think this is all going to be slow and rolling, not big and sweeping,” Ms. Franco told this news organization. “I don’t think we’re going to see an encompassing AI bill.”
 

AMA Policies Adopted on Other Issues

At the June meeting, AMA delegates adopted the following policies aiming to:

• Increase oversight and accountability of health insurers’ use of prior authorization controls on patient access to care.
• Encourage policy changes allowing physicians to receive loan forgiveness when they practice in an Indian Health Service, Tribal, or Urban Indian Health Program, similar to physicians practicing in a Veterans Administration facility.
• Advocate for federal policy that limits a patient’s out-of-pocket cost to be the same or less than the amount that a patient with traditional Medicare plus a Medigap plan would pay.
• Oppose state or national legislation that could criminalize in vitro fertilization.
• Limit what the AMA calls the “expensive” cost for Medicare Advantage enrollees who need physician-administered drugs or biologics.
• Help physicians address the handling of de-identified patient data in a rapidly changing digital health ecosystem.
• Support efforts to decriminalize the possession of non-prescribed buprenorphine for personal use by individuals who lack access to a physician for the treatment of opioid use disorder.
• Expand access to hearing, vision, and dental care. The new AMA policy advocates working with state medical associations to support coverage of hearing exams, hearing aids, cochlear implants, and vision exams and aids. The revised AMA policy also supports working with the American Dental Association and other national organizations to improve access to dental care for people enrolled in Medicare, Medicaid, and CHIP programs.
• Increase enrollment of more women and sexual and gender minority populations in clinical trials.

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

The largest US physician organization wrestled with the professional risks and rewards of artificial intelligence (AI) at its annual meeting, delaying action even as it adopted new policies on prior authorization and other concerns for clinicians and patients.

Physicians and medical students at the annual meeting of the American Medical Association (AMA) House of Delegates in Chicago intensely debated a report and two key resolutions on AI but could not reach consensus, pushing off decision-making until a future meeting in November.

One resolution would establish “augmented intelligence” as the preferred term for AI, reflecting the desired role of these tools in supporting — not making — physicians’ decisions. The other resolution focused on insurers’ use of AI in determining medical necessity.

(See specific policies adopted at the meeting, held June 8-12, below.)

A comprehensive AMA trustees’ report on AI considered additional issues including requirements for disclosing AI use, liability for harms due to flawed application of AI, data privacy, and cybersecurity.

The AMA intends to “continue to methodically assess these issues and make informed recommendations in proposing new policy,” said Bobby Mukkamala, MD, an otolaryngologist from Flint, Michigan, who became the AMA’s new president-elect.

AMA members at the meeting largely applauded the aim of these AI proposals, but some objected to parts of the trustees’ report.

They raised questions about what, exactly, constitutes an AI-powered service and whether all AI tools need the kind of guardrails the AMA may seek. There also were concerns about calls to make AI use more transparent.

While transparency might be an admirable goal, it might prove too hard to achieve given that AI-powered tools and products are already woven into medical practice in ways that physicians may not know or understand, said Christopher Libby, MD, MPH, a clinical informaticist and emergency physician at Cedars Sinai Medical Center in Los Angeles.

“It’s hard for the practicing clinician to know how every piece of technology works in order to describe it to the patient,” Dr. Libby said at the meeting. “How many people here can identify when algorithms are used in their EHR today?”

He suggested asking for more transparency from the companies that make and sell AI-powered software and tools to insurers and healthcare systems.

Steven H. Kroft, MD, the editor of the American Journal of Clinical Pathology, raised concerns about the unintended harm that unchecked use of AI may pose to scientific research.

He asked the AMA to address “a significant omission in an otherwise comprehensive report” — the need to protect the integrity of study results that can direct patient care.

“While sham science is not a new issue, large language models make it far easier for authors to generate fake papers and far harder for editors, reviewers, and publishers to identify them,” Dr. Kroft said. “This is a rapidly growing phenomenon that is threatening the integrity of the literature. These papers become embedded in the evidence bases that drive clinical decision-making.”

AMA has been working with specialty societies and outside AI experts to refine an effective set of recommendations. The new policies, once finalized, are intended to build on steps AMA already has taken, including last year releasing principles for AI development, deployment, and use.
 

Congress Mulling

The AMA delegates are far from alone in facing AI policy challenges.

Leaders in Congress also are examining AI guardrails, with influential panels such as the Senate Finance and House Energy and Commerce committees holding hearings.

A key congressional AI effort to watch is the expected implementation of a bipartisan Senate “road map,” which Senate Majority Leader Chuck Schumer (D-NY) and colleagues released in May, said Miranda A. Franco, a senior policy advisor at the law firm Holland & Knight.

The product of many months of deliberation, this Senate road map identifies priorities for future legislation, including:

• Creating appropriate guardrails and safety measures to protect patients.
• Making healthcare and biomedical data available for machine learning and data science research while carefully addressing privacy issues.
• Providing transparency for clinicians and the public about the use of AI in medical products and clinical support services, including the data used to train models.
• Examining the Centers for Medicare & Medicaid Services’ reimbursement mechanisms as well as guardrails to ensure accountability, appropriate use, and broad application of AI across all populations.

Congress likely will address issues of AI in healthcare in piecemeal fashion, taking on different aspects of these challenges at different times, Ms. Franco said. The Senate road map gives the key committees directions on where to proceed in their efforts to develop new laws.

“I think this is all going to be slow and rolling, not big and sweeping,” Ms. Franco told this news organization. “I don’t think we’re going to see an encompassing AI bill.”
 

AMA Policies Adopted on Other Issues

At the June meeting, AMA delegates adopted the following policies aiming to:

• Increase oversight and accountability of health insurers’ use of prior authorization controls on patient access to care.
• Encourage policy changes allowing physicians to receive loan forgiveness when they practice in an Indian Health Service, Tribal, or Urban Indian Health Program, similar to physicians practicing in a Veterans Administration facility.
• Advocate for federal policy that limits a patient’s out-of-pocket cost to be the same or less than the amount that a patient with traditional Medicare plus a Medigap plan would pay.
• Oppose state or national legislation that could criminalize in vitro fertilization.
• Limit what the AMA calls the “expensive” cost for Medicare Advantage enrollees who need physician-administered drugs or biologics.
• Help physicians address the handling of de-identified patient data in a rapidly changing digital health ecosystem.
• Support efforts to decriminalize the possession of non-prescribed buprenorphine for personal use by individuals who lack access to a physician for the treatment of opioid use disorder.
• Expand access to hearing, vision, and dental care. The new AMA policy advocates working with state medical associations to support coverage of hearing exams, hearing aids, cochlear implants, and vision exams and aids. The revised AMA policy also supports working with the American Dental Association and other national organizations to improve access to dental care for people enrolled in Medicare, Medicaid, and CHIP programs.
• Increase enrollment of more women and sexual and gender minority populations in clinical trials.

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

The largest US physician organization wrestled with the professional risks and rewards of artificial intelligence (AI) at its annual meeting, delaying action even as it adopted new policies on prior authorization and other concerns for clinicians and patients.

Physicians and medical students at the annual meeting of the American Medical Association (AMA) House of Delegates in Chicago intensely debated a report and two key resolutions on AI but could not reach consensus, pushing off decision-making until a future meeting in November.

One resolution would establish “augmented intelligence” as the preferred term for AI, reflecting the desired role of these tools in supporting — not making — physicians’ decisions. The other resolution focused on insurers’ use of AI in determining medical necessity.

(See specific policies adopted at the meeting, held June 8-12, below.)

A comprehensive AMA trustees’ report on AI considered additional issues including requirements for disclosing AI use, liability for harms due to flawed application of AI, data privacy, and cybersecurity.

The AMA intends to “continue to methodically assess these issues and make informed recommendations in proposing new policy,” said Bobby Mukkamala, MD, an otolaryngologist from Flint, Michigan, who became the AMA’s new president-elect.

AMA members at the meeting largely applauded the aim of these AI proposals, but some objected to parts of the trustees’ report.

They raised questions about what, exactly, constitutes an AI-powered service and whether all AI tools need the kind of guardrails the AMA may seek. There also were concerns about calls to make AI use more transparent.

While transparency might be an admirable goal, it might prove too hard to achieve given that AI-powered tools and products are already woven into medical practice in ways that physicians may not know or understand, said Christopher Libby, MD, MPH, a clinical informaticist and emergency physician at Cedars Sinai Medical Center in Los Angeles.

“It’s hard for the practicing clinician to know how every piece of technology works in order to describe it to the patient,” Dr. Libby said at the meeting. “How many people here can identify when algorithms are used in their EHR today?”

He suggested asking for more transparency from the companies that make and sell AI-powered software and tools to insurers and healthcare systems.

Steven H. Kroft, MD, the editor of the American Journal of Clinical Pathology, raised concerns about the unintended harm that unchecked use of AI may pose to scientific research.

He asked the AMA to address “a significant omission in an otherwise comprehensive report” — the need to protect the integrity of study results that can direct patient care.

“While sham science is not a new issue, large language models make it far easier for authors to generate fake papers and far harder for editors, reviewers, and publishers to identify them,” Dr. Kroft said. “This is a rapidly growing phenomenon that is threatening the integrity of the literature. These papers become embedded in the evidence bases that drive clinical decision-making.”

AMA has been working with specialty societies and outside AI experts to refine an effective set of recommendations. The new policies, once finalized, are intended to build on steps AMA already has taken, including last year releasing principles for AI development, deployment, and use.
 

Congress Mulling

The AMA delegates are far from alone in facing AI policy challenges.

Leaders in Congress also are examining AI guardrails, with influential panels such as the Senate Finance and House Energy and Commerce committees holding hearings.

A key congressional AI effort to watch is the expected implementation of a bipartisan Senate “road map,” which Senate Majority Leader Chuck Schumer (D-NY) and colleagues released in May, said Miranda A. Franco, a senior policy advisor at the law firm Holland & Knight.

The product of many months of deliberation, this Senate road map identifies priorities for future legislation, including:

• Creating appropriate guardrails and safety measures to protect patients.
• Making healthcare and biomedical data available for machine learning and data science research while carefully addressing privacy issues.
• Providing transparency for clinicians and the public about the use of AI in medical products and clinical support services, including the data used to train models.
• Examining the Centers for Medicare & Medicaid Services’ reimbursement mechanisms as well as guardrails to ensure accountability, appropriate use, and broad application of AI across all populations.

Congress likely will address issues of AI in healthcare in piecemeal fashion, taking on different aspects of these challenges at different times, Ms. Franco said. The Senate road map gives the key committees directions on where to proceed in their efforts to develop new laws.

“I think this is all going to be slow and rolling, not big and sweeping,” Ms. Franco told this news organization. “I don’t think we’re going to see an encompassing AI bill.”
 

AMA Policies Adopted on Other Issues

At the June meeting, AMA delegates adopted the following policies aiming to:

• Increase oversight and accountability of health insurers’ use of prior authorization controls on patient access to care.
• Encourage policy changes allowing physicians to receive loan forgiveness when they practice in an Indian Health Service, Tribal, or Urban Indian Health Program, similar to physicians practicing in a Veterans Administration facility.
• Advocate for federal policy that limits a patient’s out-of-pocket cost to be the same or less than the amount that a patient with traditional Medicare plus a Medigap plan would pay.
• Oppose state or national legislation that could criminalize in vitro fertilization.
• Limit what the AMA calls the “expensive” cost for Medicare Advantage enrollees who need physician-administered drugs or biologics.
• Help physicians address the handling of de-identified patient data in a rapidly changing digital health ecosystem.
• Support efforts to decriminalize the possession of non-prescribed buprenorphine for personal use by individuals who lack access to a physician for the treatment of opioid use disorder.
• Expand access to hearing, vision, and dental care. The new AMA policy advocates working with state medical associations to support coverage of hearing exams, hearing aids, cochlear implants, and vision exams and aids. The revised AMA policy also supports working with the American Dental Association and other national organizations to improve access to dental care for people enrolled in Medicare, Medicaid, and CHIP programs.
• Increase enrollment of more women and sexual and gender minority populations in clinical trials.

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

Women who had overweight or obesity as teens or young adults had more than a twofold increased risk for stroke before age 55, new research suggested.

An analysis of more than five decades of health data on 10,000 adults revealed that close to 5% experienced a stroke during the follow-up period, with the risk for ischemic stroke being more than twice as high in women who had obesity as teens or young adults. The risk was even higher for hemorrhagic stroke in both men and women with a history of obesity in youth.

“Our findings suggest that being overweight may have long-term health effects, even if the excess weight is temporary,” lead author Ursula Mikkola, BM, an investigator in the Research Unit of Population Health at the University of Oulu, Oulu, Finland, said in a news release.

Gender Differences

Childhood obesity has been associated with a heightened risk for cerebrovascular disease later in life, but most studies have focused on body mass index (BMI) at a single time point without considering its fluctuations throughout life, the investigators noted.

For the study, investigators used data from the Northern Finland Birth Cohort 1966, a prospective, general population-based birth cohort that followed 10,491 individuals (5185 women) until 2020 or the first stroke, death, or moving abroad, whichever came first.

Mean (SD) follow-up for each participant was 39 years from age 14 onward and 23 years from age 31 onward. The analysis was conducted between 1980 and 2020.

BMI data were collected from participants at the age of 14 and 31 years. Age 14 covariates included smoking, parental socioeconomic status, and age at menarche (for girls). Age 31 covariates included smoking and participants’ educational level.

During the follow-up period, 4.7% of participants experienced stroke. Of these events, 31% were ischemic strokes and 40% were transient ischemic attacks. The remainder were hemorrhagic or other cerebrovascular events.

Using normal weight as a reference, researchers found that the risk for ischemic stroke was over twice as high for women who had been overweight at ages 14 (hazard ratio [HR], 2.49; 95% confidence interval [CI], 1.44-4.31) and 31 (HR, 2.13; 95% CI, 1.14-3.97) years. The risk was also considerably higher for women who had obesity at ages 14 (HR, 1.87; 95% CI, 0.76-4.58) and 31 (HR, 2.67; 95% CI, 1.26-5.65) years.

The risk for hemorrhagic stroke was even higher, both among women (HR, 3.49; 95% CI, 1.13-10.7) and men (HR, 5.75; 95% CI, 1.43-23.1) who had obesity at age 31.

No similar associations were found among men, and the findings were independent of earlier or later BMI.

The risk for any cerebrovascular disease related to overweight at age 14 was twice as high among girls vs boys (HR, 2.09; 95% CI, 1.06-4.15), and the risk for ischemic stroke related to obesity at age 31 was nearly seven times higher among women vs men (HR, 6.96; 95% CI, 1.36-35.7).

“Stroke at a young age is rare, so the difference of just a few strokes could have an outsized impact on the risk estimates,” the study authors said. “Also, BMI relies solely on a person’s height and weight; therefore, a high BMI may be a misleading way to define obesity, especially in muscular people who may carry little fat even while weighing more.”
 

Caveats

In an accompanying editorial, Larry Goldstein, MD, chair of the Department of Neurology, University of Kentucky, Lexington, Kentucky, and codirector of the Kentucky Neuroscience Institute, said the study “provides additional evidence of an association between overweight/obesity and stroke in young adults.”

However, Dr. Goldstein added that “while it is tempting to assume that reductions in overweight/obesity in younger populations would translate to lower stroke rates in young adults, this remains to be proven.”

Moreover, it is “always important to acknowledge that associations found in observational studies may not reflect causality.”

This study was supported by Orion Research Foundation, Päivikki and Sakari Sohlberg Foundation, and Paulo Foundation. Dr. Mikkola reported no relevant financial relationships. The other authors’ disclosures are listed on the original paper. Dr. Goldstein reported no relevant financial relationships.

A version of this article appeared on Medscape.com.

Women who had overweight or obesity as teens or young adults had more than a twofold increased risk for stroke before age 55, new research suggested.

An analysis of more than five decades of health data on 10,000 adults revealed that close to 5% experienced a stroke during the follow-up period, with the risk for ischemic stroke being more than twice as high in women who had obesity as teens or young adults. The risk was even higher for hemorrhagic stroke in both men and women with a history of obesity in youth.

“Our findings suggest that being overweight may have long-term health effects, even if the excess weight is temporary,” lead author Ursula Mikkola, BM, an investigator in the Research Unit of Population Health at the University of Oulu, Oulu, Finland, said in a news release.

Gender Differences

Childhood obesity has been associated with a heightened risk for cerebrovascular disease later in life, but most studies have focused on body mass index (BMI) at a single time point without considering its fluctuations throughout life, the investigators noted.

For the study, investigators used data from the Northern Finland Birth Cohort 1966, a prospective, general population-based birth cohort that followed 10,491 individuals (5185 women) until 2020 or the first stroke, death, or moving abroad, whichever came first.

Mean (SD) follow-up for each participant was 39 years from age 14 onward and 23 years from age 31 onward. The analysis was conducted between 1980 and 2020.

BMI data were collected from participants at the age of 14 and 31 years. Age 14 covariates included smoking, parental socioeconomic status, and age at menarche (for girls). Age 31 covariates included smoking and participants’ educational level.

During the follow-up period, 4.7% of participants experienced stroke. Of these events, 31% were ischemic strokes and 40% were transient ischemic attacks. The remainder were hemorrhagic or other cerebrovascular events.

Using normal weight as a reference, researchers found that the risk for ischemic stroke was over twice as high for women who had been overweight at ages 14 (hazard ratio [HR], 2.49; 95% confidence interval [CI], 1.44-4.31) and 31 (HR, 2.13; 95% CI, 1.14-3.97) years. The risk was also considerably higher for women who had obesity at ages 14 (HR, 1.87; 95% CI, 0.76-4.58) and 31 (HR, 2.67; 95% CI, 1.26-5.65) years.

The risk for hemorrhagic stroke was even higher, both among women (HR, 3.49; 95% CI, 1.13-10.7) and men (HR, 5.75; 95% CI, 1.43-23.1) who had obesity at age 31.

No similar associations were found among men, and the findings were independent of earlier or later BMI.

The risk for any cerebrovascular disease related to overweight at age 14 was twice as high among girls vs boys (HR, 2.09; 95% CI, 1.06-4.15), and the risk for ischemic stroke related to obesity at age 31 was nearly seven times higher among women vs men (HR, 6.96; 95% CI, 1.36-35.7).

“Stroke at a young age is rare, so the difference of just a few strokes could have an outsized impact on the risk estimates,” the study authors said. “Also, BMI relies solely on a person’s height and weight; therefore, a high BMI may be a misleading way to define obesity, especially in muscular people who may carry little fat even while weighing more.”
 

Caveats

In an accompanying editorial, Larry Goldstein, MD, chair of the Department of Neurology, University of Kentucky, Lexington, Kentucky, and codirector of the Kentucky Neuroscience Institute, said the study “provides additional evidence of an association between overweight/obesity and stroke in young adults.”

However, Dr. Goldstein added that “while it is tempting to assume that reductions in overweight/obesity in younger populations would translate to lower stroke rates in young adults, this remains to be proven.”

Moreover, it is “always important to acknowledge that associations found in observational studies may not reflect causality.”

This study was supported by Orion Research Foundation, Päivikki and Sakari Sohlberg Foundation, and Paulo Foundation. Dr. Mikkola reported no relevant financial relationships. The other authors’ disclosures are listed on the original paper. Dr. Goldstein reported no relevant financial relationships.

A version of this article appeared on Medscape.com.

Women who had overweight or obesity as teens or young adults had more than a twofold increased risk for stroke before age 55, new research suggested.

An analysis of more than five decades of health data on 10,000 adults revealed that close to 5% experienced a stroke during the follow-up period, with the risk for ischemic stroke being more than twice as high in women who had obesity as teens or young adults. The risk was even higher for hemorrhagic stroke in both men and women with a history of obesity in youth.

“Our findings suggest that being overweight may have long-term health effects, even if the excess weight is temporary,” lead author Ursula Mikkola, BM, an investigator in the Research Unit of Population Health at the University of Oulu, Oulu, Finland, said in a news release.

Gender Differences

Childhood obesity has been associated with a heightened risk for cerebrovascular disease later in life, but most studies have focused on body mass index (BMI) at a single time point without considering its fluctuations throughout life, the investigators noted.

For the study, investigators used data from the Northern Finland Birth Cohort 1966, a prospective, general population-based birth cohort that followed 10,491 individuals (5185 women) until 2020 or the first stroke, death, or moving abroad, whichever came first.

Mean (SD) follow-up for each participant was 39 years from age 14 onward and 23 years from age 31 onward. The analysis was conducted between 1980 and 2020.

BMI data were collected from participants at the age of 14 and 31 years. Age 14 covariates included smoking, parental socioeconomic status, and age at menarche (for girls). Age 31 covariates included smoking and participants’ educational level.

During the follow-up period, 4.7% of participants experienced stroke. Of these events, 31% were ischemic strokes and 40% were transient ischemic attacks. The remainder were hemorrhagic or other cerebrovascular events.

Using normal weight as a reference, researchers found that the risk for ischemic stroke was over twice as high for women who had been overweight at ages 14 (hazard ratio [HR], 2.49; 95% confidence interval [CI], 1.44-4.31) and 31 (HR, 2.13; 95% CI, 1.14-3.97) years. The risk was also considerably higher for women who had obesity at ages 14 (HR, 1.87; 95% CI, 0.76-4.58) and 31 (HR, 2.67; 95% CI, 1.26-5.65) years.

The risk for hemorrhagic stroke was even higher, both among women (HR, 3.49; 95% CI, 1.13-10.7) and men (HR, 5.75; 95% CI, 1.43-23.1) who had obesity at age 31.

No similar associations were found among men, and the findings were independent of earlier or later BMI.

The risk for any cerebrovascular disease related to overweight at age 14 was twice as high among girls vs boys (HR, 2.09; 95% CI, 1.06-4.15), and the risk for ischemic stroke related to obesity at age 31 was nearly seven times higher among women vs men (HR, 6.96; 95% CI, 1.36-35.7).

“Stroke at a young age is rare, so the difference of just a few strokes could have an outsized impact on the risk estimates,” the study authors said. “Also, BMI relies solely on a person’s height and weight; therefore, a high BMI may be a misleading way to define obesity, especially in muscular people who may carry little fat even while weighing more.”
 

Caveats

In an accompanying editorial, Larry Goldstein, MD, chair of the Department of Neurology, University of Kentucky, Lexington, Kentucky, and codirector of the Kentucky Neuroscience Institute, said the study “provides additional evidence of an association between overweight/obesity and stroke in young adults.”

However, Dr. Goldstein added that “while it is tempting to assume that reductions in overweight/obesity in younger populations would translate to lower stroke rates in young adults, this remains to be proven.”

Moreover, it is “always important to acknowledge that associations found in observational studies may not reflect causality.”

This study was supported by Orion Research Foundation, Päivikki and Sakari Sohlberg Foundation, and Paulo Foundation. Dr. Mikkola reported no relevant financial relationships. The other authors’ disclosures are listed on the original paper. Dr. Goldstein reported no relevant financial relationships.

A version of this article appeared on Medscape.com.

NASHVILLE, Tennessee — In a population of Black/African American and Hispanic/Latino patients with multiple sclerosis (MS), ocrelizumab had high efficacy and an acceptable safety profile, according to the results of a 1-year analysis of the CHIMES trial. The study is the first-ever prospective study of an MS disease-modifying therapy (DMT) exclusively performed in under-represented populations, and offers lessons to researchers aiming to design more inclusive clinical trials to bolster participation by under-represented populations.

“The goal was to better understand efficacy of therapy in under-represented populations because we typically have very low numbers of these patients in our clinical trials, although there are multiple studies over the past decades suggesting that there may be poorer outcomes in Black and Hispanic individuals, particularly in the United States, and that there also may be more aggressive disease,” said Mitzi Williams, MD, who presented the study in a poster session at the annual meeting of the Consortium of Multiple Sclerosis Centers.

The team recruited 113 Black participants and 69 Hispanic participants, and, in fact, over-recruited the target number by 25%, and did so 2 months before the launch of the study in July 2020, which just happened to be in the midst of a global pandemic.

After 48 weeks of ocrelizumab treatment, 46.0% of Black participants and 58.0% of Hispanic participants achieved no evidence of disease activity in three components (NEDA-3), while 94.7% and 95.7% were free from relapses, respectively, and 94.7% and 94.2% were free from disease worsening. Serious adverse events occurred in 6.2% and 4.3% of each group, respectively, and there were no new safety signals in either group.

“The good news is that the efficacy and safety was very similar to what we saw in other clinical trials. I don’t think we really expected it to be much different, because when we think about race, it’s a social construct, not a biologic construct. What we do hope to find out is more about some of the interplay of social determinants of health, and how getting on high efficacy treatment can improve and increase productivity and outcomes in the long term,” said Dr. Williams, who is medical director of Joi Life Wellness Group, Smyrna, Georgia.

The researchers succeeded by involving patient advocates and advocacy organizations at the very earliest stages of the trial design. “We were very intentional about looking at things like social determinants of health, childcare, transportation, and things like that to ease some of the burden of participating in the trial, obviously in a legal and compliant way,” said Dr. Williams. The team also ensured complete and accurate translation of patient materials into Spanish.

The study was also a phase 4 trial, which may have simplified recruitment. “So it’s a therapy that’s already approved, which may make people feel more comfortable, but obviously the goal is for our phase 3 trials to make sure that we are recruiting represented populations. We’re taking these learnings and applying them to the broader clinical trial population so that hopefully we won’t have to come back and do phase 4 studies like this,” said Dr. Williams.

She noted that the results of more inclusive studies don’t just benefit underserved populations. “You have groups of people that are suffering and having more disability from a condition, and you need to understand why. When we broaden the population to understand those that are most vulnerable and underserved and [having the worst outcomes], it really helps us to better treat everybody. Because if we can get a hold of those factors that make us do the worst, then we can also better understand the factors that make us do the best,” said Dr. Williams.
 

Inclusive Recruitment in Clinical Trials

Asked for comment, Ahmed Obeidat, MD, PhD, highlighted the importance of inclusive recruitment. “The study is very important because historically and even in most recent clinical trials, these groups were markedly under-represented and most completed clinical trials derive conclusions based on the study of a nondiverse, White-non-Hispanic predominant population,” said Dr. Obeidat, who is an associate professor at the Medical College of Wisconsin, Milwaukee. He pointed to a systematic review showing that the median percentage of White participants in MS clinical trials was 93% and ranged from 86% to 98%.

“Several factors may contribute to the disparity in clinical trial participation, and solutions must be explored and developed. CHIMES is a first step in this direction where the study itself is designed to address disparity in MS clinical trial participation,” said Dr. Obeidat.

Dr. Obeidat also pointed to the need to consider other forms of diversity in clinical trials, such as older patients and those with advanced disability. “Investigators, coordinators, and other staff should all strive to be as inclusive as possible in clinical trials,” he said.

Dr. Williams has received consulting fees from Alexion, Biogen, Bristol Myers Squibb, EMD Serono, Genentech Inc., Janssen, Novartis, Sanofi, and TG Therapeutics, and serves on speakers bureaus for Biogen, Bristol Myers Squibb, EMD Serono, Janssen, Genentech, and TG Therapeutics. Dr. Ahmed Z. Obeidat has financial relationships with Alexion Pharmaceuticals, Banner Life Sciences, BD Biosciences, Biogen, Biologix Solutions, Bristol Myers Squibb, Celgene, EMD Serono, Genentech, GW Pharmaceuticals, Horizon Therapeutics, Jazz Pharmaceuticals, Novartis, Sandoz, Sanofi Genzyme, TG Therapeutics, and Viela Bio.

NASHVILLE, Tennessee — In a population of Black/African American and Hispanic/Latino patients with multiple sclerosis (MS), ocrelizumab had high efficacy and an acceptable safety profile, according to the results of a 1-year analysis of the CHIMES trial. The study is the first-ever prospective study of an MS disease-modifying therapy (DMT) exclusively performed in under-represented populations, and offers lessons to researchers aiming to design more inclusive clinical trials to bolster participation by under-represented populations.

“The goal was to better understand efficacy of therapy in under-represented populations because we typically have very low numbers of these patients in our clinical trials, although there are multiple studies over the past decades suggesting that there may be poorer outcomes in Black and Hispanic individuals, particularly in the United States, and that there also may be more aggressive disease,” said Mitzi Williams, MD, who presented the study in a poster session at the annual meeting of the Consortium of Multiple Sclerosis Centers.

The team recruited 113 Black participants and 69 Hispanic participants, and, in fact, over-recruited the target number by 25%, and did so 2 months before the launch of the study in July 2020, which just happened to be in the midst of a global pandemic.

After 48 weeks of ocrelizumab treatment, 46.0% of Black participants and 58.0% of Hispanic participants achieved no evidence of disease activity in three components (NEDA-3), while 94.7% and 95.7% were free from relapses, respectively, and 94.7% and 94.2% were free from disease worsening. Serious adverse events occurred in 6.2% and 4.3% of each group, respectively, and there were no new safety signals in either group.

“The good news is that the efficacy and safety was very similar to what we saw in other clinical trials. I don’t think we really expected it to be much different, because when we think about race, it’s a social construct, not a biologic construct. What we do hope to find out is more about some of the interplay of social determinants of health, and how getting on high efficacy treatment can improve and increase productivity and outcomes in the long term,” said Dr. Williams, who is medical director of Joi Life Wellness Group, Smyrna, Georgia.

The researchers succeeded by involving patient advocates and advocacy organizations at the very earliest stages of the trial design. “We were very intentional about looking at things like social determinants of health, childcare, transportation, and things like that to ease some of the burden of participating in the trial, obviously in a legal and compliant way,” said Dr. Williams. The team also ensured complete and accurate translation of patient materials into Spanish.

The study was also a phase 4 trial, which may have simplified recruitment. “So it’s a therapy that’s already approved, which may make people feel more comfortable, but obviously the goal is for our phase 3 trials to make sure that we are recruiting represented populations. We’re taking these learnings and applying them to the broader clinical trial population so that hopefully we won’t have to come back and do phase 4 studies like this,” said Dr. Williams.

She noted that the results of more inclusive studies don’t just benefit underserved populations. “You have groups of people that are suffering and having more disability from a condition, and you need to understand why. When we broaden the population to understand those that are most vulnerable and underserved and [having the worst outcomes], it really helps us to better treat everybody. Because if we can get a hold of those factors that make us do the worst, then we can also better understand the factors that make us do the best,” said Dr. Williams.
 

Inclusive Recruitment in Clinical Trials

Asked for comment, Ahmed Obeidat, MD, PhD, highlighted the importance of inclusive recruitment. “The study is very important because historically and even in most recent clinical trials, these groups were markedly under-represented and most completed clinical trials derive conclusions based on the study of a nondiverse, White-non-Hispanic predominant population,” said Dr. Obeidat, who is an associate professor at the Medical College of Wisconsin, Milwaukee. He pointed to a systematic review showing that the median percentage of White participants in MS clinical trials was 93% and ranged from 86% to 98%.

“Several factors may contribute to the disparity in clinical trial participation, and solutions must be explored and developed. CHIMES is a first step in this direction where the study itself is designed to address disparity in MS clinical trial participation,” said Dr. Obeidat.

Dr. Obeidat also pointed to the need to consider other forms of diversity in clinical trials, such as older patients and those with advanced disability. “Investigators, coordinators, and other staff should all strive to be as inclusive as possible in clinical trials,” he said.

Dr. Williams has received consulting fees from Alexion, Biogen, Bristol Myers Squibb, EMD Serono, Genentech Inc., Janssen, Novartis, Sanofi, and TG Therapeutics, and serves on speakers bureaus for Biogen, Bristol Myers Squibb, EMD Serono, Janssen, Genentech, and TG Therapeutics. Dr. Ahmed Z. Obeidat has financial relationships with Alexion Pharmaceuticals, Banner Life Sciences, BD Biosciences, Biogen, Biologix Solutions, Bristol Myers Squibb, Celgene, EMD Serono, Genentech, GW Pharmaceuticals, Horizon Therapeutics, Jazz Pharmaceuticals, Novartis, Sandoz, Sanofi Genzyme, TG Therapeutics, and Viela Bio.

NASHVILLE, Tennessee — In a population of Black/African American and Hispanic/Latino patients with multiple sclerosis (MS), ocrelizumab had high efficacy and an acceptable safety profile, according to the results of a 1-year analysis of the CHIMES trial. The study is the first-ever prospective study of an MS disease-modifying therapy (DMT) exclusively performed in under-represented populations, and offers lessons to researchers aiming to design more inclusive clinical trials to bolster participation by under-represented populations.

“The goal was to better understand efficacy of therapy in under-represented populations because we typically have very low numbers of these patients in our clinical trials, although there are multiple studies over the past decades suggesting that there may be poorer outcomes in Black and Hispanic individuals, particularly in the United States, and that there also may be more aggressive disease,” said Mitzi Williams, MD, who presented the study in a poster session at the annual meeting of the Consortium of Multiple Sclerosis Centers.

The team recruited 113 Black participants and 69 Hispanic participants, and, in fact, over-recruited the target number by 25%, and did so 2 months before the launch of the study in July 2020, which just happened to be in the midst of a global pandemic.

After 48 weeks of ocrelizumab treatment, 46.0% of Black participants and 58.0% of Hispanic participants achieved no evidence of disease activity in three components (NEDA-3), while 94.7% and 95.7% were free from relapses, respectively, and 94.7% and 94.2% were free from disease worsening. Serious adverse events occurred in 6.2% and 4.3% of each group, respectively, and there were no new safety signals in either group.

“The good news is that the efficacy and safety was very similar to what we saw in other clinical trials. I don’t think we really expected it to be much different, because when we think about race, it’s a social construct, not a biologic construct. What we do hope to find out is more about some of the interplay of social determinants of health, and how getting on high efficacy treatment can improve and increase productivity and outcomes in the long term,” said Dr. Williams, who is medical director of Joi Life Wellness Group, Smyrna, Georgia.

The researchers succeeded by involving patient advocates and advocacy organizations at the very earliest stages of the trial design. “We were very intentional about looking at things like social determinants of health, childcare, transportation, and things like that to ease some of the burden of participating in the trial, obviously in a legal and compliant way,” said Dr. Williams. The team also ensured complete and accurate translation of patient materials into Spanish.

The study was also a phase 4 trial, which may have simplified recruitment. “So it’s a therapy that’s already approved, which may make people feel more comfortable, but obviously the goal is for our phase 3 trials to make sure that we are recruiting represented populations. We’re taking these learnings and applying them to the broader clinical trial population so that hopefully we won’t have to come back and do phase 4 studies like this,” said Dr. Williams.

She noted that the results of more inclusive studies don’t just benefit underserved populations. “You have groups of people that are suffering and having more disability from a condition, and you need to understand why. When we broaden the population to understand those that are most vulnerable and underserved and [having the worst outcomes], it really helps us to better treat everybody. Because if we can get a hold of those factors that make us do the worst, then we can also better understand the factors that make us do the best,” said Dr. Williams.
 

Inclusive Recruitment in Clinical Trials

Asked for comment, Ahmed Obeidat, MD, PhD, highlighted the importance of inclusive recruitment. “The study is very important because historically and even in most recent clinical trials, these groups were markedly under-represented and most completed clinical trials derive conclusions based on the study of a nondiverse, White-non-Hispanic predominant population,” said Dr. Obeidat, who is an associate professor at the Medical College of Wisconsin, Milwaukee. He pointed to a systematic review showing that the median percentage of White participants in MS clinical trials was 93% and ranged from 86% to 98%.

“Several factors may contribute to the disparity in clinical trial participation, and solutions must be explored and developed. CHIMES is a first step in this direction where the study itself is designed to address disparity in MS clinical trial participation,” said Dr. Obeidat.

Dr. Obeidat also pointed to the need to consider other forms of diversity in clinical trials, such as older patients and those with advanced disability. “Investigators, coordinators, and other staff should all strive to be as inclusive as possible in clinical trials,” he said.

Dr. Williams has received consulting fees from Alexion, Biogen, Bristol Myers Squibb, EMD Serono, Genentech Inc., Janssen, Novartis, Sanofi, and TG Therapeutics, and serves on speakers bureaus for Biogen, Bristol Myers Squibb, EMD Serono, Janssen, Genentech, and TG Therapeutics. Dr. Ahmed Z. Obeidat has financial relationships with Alexion Pharmaceuticals, Banner Life Sciences, BD Biosciences, Biogen, Biologix Solutions, Bristol Myers Squibb, Celgene, EMD Serono, Genentech, GW Pharmaceuticals, Horizon Therapeutics, Jazz Pharmaceuticals, Novartis, Sandoz, Sanofi Genzyme, TG Therapeutics, and Viela Bio.

NASHVILLE, Tennessee — In pediatric multiple sclerosis (MS), the optimal dose of ocrelizumab is the same as the 600 mg adult dose for patients weighing more than 35 kg, according to pharmacokinetic/pharmacodynamic (PK/PD) data from the OPERETTA 1 phase 2 clinical trial. The safety profile was similar to adult patients.

“While we believe the disease to be the same in children and adolescents, [MS] is distinguished by its very inflammatory nature, oftentimes causing two to three times the number of relapses per year as their adult-onset colleagues,” said Teri Schreiner, MD, during a presentation of the results at the annual meeting of the Consortium of Multiple Sclerosis Centers.

Approved therapies for pediatric MS include fingolimod in the United States and Europe, as well as dimethyl fumarate in Europe. “There’s a real need for high-efficacy treatment [in pediatric patients], again referring back to this disease being very inflammatory in children and adolescents. We oftentimes will use medications off label but this is clearly suboptimal as we lack safety data, and oftentimes run into difficulty with insurance approval of off-label use of medicine,” said Dr. Schreiner, who is an associate professor of neurology at University of Colorado School of Medicine, Aurora.

To determine the dose in pediatric patients that would produce comparable PK and PD to adults, the researchers dosed six patients aged 10-18 with 300 mg ocrelizumab, and 17 such patients with 600 mg ocrelizumab during a 24-week dose-exploration period, followed by a 264-week optional extension period. The cohorts were separated based on weight of less than or more than 40 kg. The mean ages were 11.2 years (mean weight, 34.9 kg) and 15.3 years (mean weight, 62.3 kg), respectively.

During the dose-exploration period, seven blood draws were performed to characterize PK. “When the PK data was analyzed, we saw that the proper cut-off point was 35 kilos. At less than 35 kilos, the appropriate dose was half of that adult dose, so 300 milligrams every 6 months, whereas above 35 kilos, the proper dose was actually 600, or the adult dose. Given the rarity of pediatric-onset MS patients less than 35 kilos, most patients will benefit from the adult dose of 600 milligrams twice yearly,” said Dr. Schreiner.

PD data were also encouraging. “The primary PD was the absence of CD-19 B cells, and that was tracked over time. While there were a few patients in both cohorts that had modest reconstitution, there was no patient in our study that crossed the retreatment threshold, and all blood samples were negative for anti-drug antibodies,” said Dr. Schreiner.

Adverse events occurred in five of six patients in the 300 mg group (83%; 4 grade 2, 1 grade 3) and 100% of patients in the 600 mg group (1 grade 1, 9 grade 2, 6 grade 3, 1 grade 4). There was one serious adverse event in the 300 mg group (16.7%) and four serious adverse events in the 600 mg group (23.5%). None led to treatment discontinuation. “This is largely consistent with what was seen in the adult studies of ocrelizumab,” said Dr. Schreiner.

Roche is now recruiting for the phase 3 OPERETTA 2 trial, which will use the 600 mg dose and compare outcomes to a fingolimod arm.
 

Establishing Safety in the Pediatric Population

“In [pediatric onset MS] it’s an important piece of information to design OPERETTA 2 and to dose ocrelizumab in pediatric-onset MS in general,” said Jeffrey A Cohen, MD, professor of neurology at the Cleveland Clinic, who was asked for comment.

During the Q&A period, Dr. Schreiner was asked whether it is possible to extrapolate experience from rituximab to the pediatric population. “They’re very similar molecules, and we know the mechanisms of action, but I think part of the importance of doing these studies is to get the safety data so that we actually can say with certainty, we are giving you a drug that has this list of side effects and we know about them definitively. We all use other high-efficacy medications, but I don’t think we can exactly extrapolate,” said Dr. Schreiner.

Session moderator Amy Perrin Ross, APN, noted the lack of approved pediatric therapies for MS. “This is an extremely important study, because we at least in the lower 48 are quite limited in our resources for approved pediatric cases. Information like this will make it easier for a potential pediatric indication, which would then make it easier on us to go after [treatment of the disease in this population]. The weight-based dosing, I think, is really a good thing. Patients have been asking for weight-based dosing on everything for many years,” she said.

Ahmed Obeidat, MD, PhD, associate professor at the Medical College of Wisconsin, also praised the study. “While pediatric MS is rare, it is an area of unmet need when it comes to disease-modifying therapies as only fingolimod is FDA-approved, and many use B cell–depleting therapy, such as rituximab, off label to treat children with MS with good outcomes. The need for guidance on the dosing of B cell–depleting therapy is a main priority for research in pediatric MS,” he said.

The study was funded by Roche. Dr. Schreiner has consulted for Roche and Cycle Pharmaceuticals. Dr. Cohen has consulted for Astoria, Bristol Myers Squibb, Convelo, EMD Serono Inc, FiND, INMune, and Sandoz. Dr. Obeidat has financial relationships with Alexion Pharmaceuticals, Banner Life Sciences, BD Biosciences, Biogen, Biologix Solutions, Bristol Myers Squibb, Celgene, EMD Serono, Genentech, GW Pharmaceuticals, Horizon Therapeutics, Jazz Pharmaceuticals, Novartis, Sandoz, Sanofi Genzyme, TG Therapeutics, and Viela Bio. Ms. Ross has consulted for EMD Serono, BMS, Horizon, Alexion, TG Therapeutics, Novartis, Roche, and Sanofi.

NASHVILLE, Tennessee — In pediatric multiple sclerosis (MS), the optimal dose of ocrelizumab is the same as the 600 mg adult dose for patients weighing more than 35 kg, according to pharmacokinetic/pharmacodynamic (PK/PD) data from the OPERETTA 1 phase 2 clinical trial. The safety profile was similar to adult patients.

“While we believe the disease to be the same in children and adolescents, [MS] is distinguished by its very inflammatory nature, oftentimes causing two to three times the number of relapses per year as their adult-onset colleagues,” said Teri Schreiner, MD, during a presentation of the results at the annual meeting of the Consortium of Multiple Sclerosis Centers.

Approved therapies for pediatric MS include fingolimod in the United States and Europe, as well as dimethyl fumarate in Europe. “There’s a real need for high-efficacy treatment [in pediatric patients], again referring back to this disease being very inflammatory in children and adolescents. We oftentimes will use medications off label but this is clearly suboptimal as we lack safety data, and oftentimes run into difficulty with insurance approval of off-label use of medicine,” said Dr. Schreiner, who is an associate professor of neurology at University of Colorado School of Medicine, Aurora.

To determine the dose in pediatric patients that would produce comparable PK and PD to adults, the researchers dosed six patients aged 10-18 with 300 mg ocrelizumab, and 17 such patients with 600 mg ocrelizumab during a 24-week dose-exploration period, followed by a 264-week optional extension period. The cohorts were separated based on weight of less than or more than 40 kg. The mean ages were 11.2 years (mean weight, 34.9 kg) and 15.3 years (mean weight, 62.3 kg), respectively.

During the dose-exploration period, seven blood draws were performed to characterize PK. “When the PK data was analyzed, we saw that the proper cut-off point was 35 kilos. At less than 35 kilos, the appropriate dose was half of that adult dose, so 300 milligrams every 6 months, whereas above 35 kilos, the proper dose was actually 600, or the adult dose. Given the rarity of pediatric-onset MS patients less than 35 kilos, most patients will benefit from the adult dose of 600 milligrams twice yearly,” said Dr. Schreiner.

PD data were also encouraging. “The primary PD was the absence of CD-19 B cells, and that was tracked over time. While there were a few patients in both cohorts that had modest reconstitution, there was no patient in our study that crossed the retreatment threshold, and all blood samples were negative for anti-drug antibodies,” said Dr. Schreiner.

Adverse events occurred in five of six patients in the 300 mg group (83%; 4 grade 2, 1 grade 3) and 100% of patients in the 600 mg group (1 grade 1, 9 grade 2, 6 grade 3, 1 grade 4). There was one serious adverse event in the 300 mg group (16.7%) and four serious adverse events in the 600 mg group (23.5%). None led to treatment discontinuation. “This is largely consistent with what was seen in the adult studies of ocrelizumab,” said Dr. Schreiner.

Roche is now recruiting for the phase 3 OPERETTA 2 trial, which will use the 600 mg dose and compare outcomes to a fingolimod arm.
 

Establishing Safety in the Pediatric Population

“In [pediatric onset MS] it’s an important piece of information to design OPERETTA 2 and to dose ocrelizumab in pediatric-onset MS in general,” said Jeffrey A Cohen, MD, professor of neurology at the Cleveland Clinic, who was asked for comment.

During the Q&A period, Dr. Schreiner was asked whether it is possible to extrapolate experience from rituximab to the pediatric population. “They’re very similar molecules, and we know the mechanisms of action, but I think part of the importance of doing these studies is to get the safety data so that we actually can say with certainty, we are giving you a drug that has this list of side effects and we know about them definitively. We all use other high-efficacy medications, but I don’t think we can exactly extrapolate,” said Dr. Schreiner.

Session moderator Amy Perrin Ross, APN, noted the lack of approved pediatric therapies for MS. “This is an extremely important study, because we at least in the lower 48 are quite limited in our resources for approved pediatric cases. Information like this will make it easier for a potential pediatric indication, which would then make it easier on us to go after [treatment of the disease in this population]. The weight-based dosing, I think, is really a good thing. Patients have been asking for weight-based dosing on everything for many years,” she said.

Ahmed Obeidat, MD, PhD, associate professor at the Medical College of Wisconsin, also praised the study. “While pediatric MS is rare, it is an area of unmet need when it comes to disease-modifying therapies as only fingolimod is FDA-approved, and many use B cell–depleting therapy, such as rituximab, off label to treat children with MS with good outcomes. The need for guidance on the dosing of B cell–depleting therapy is a main priority for research in pediatric MS,” he said.

The study was funded by Roche. Dr. Schreiner has consulted for Roche and Cycle Pharmaceuticals. Dr. Cohen has consulted for Astoria, Bristol Myers Squibb, Convelo, EMD Serono Inc, FiND, INMune, and Sandoz. Dr. Obeidat has financial relationships with Alexion Pharmaceuticals, Banner Life Sciences, BD Biosciences, Biogen, Biologix Solutions, Bristol Myers Squibb, Celgene, EMD Serono, Genentech, GW Pharmaceuticals, Horizon Therapeutics, Jazz Pharmaceuticals, Novartis, Sandoz, Sanofi Genzyme, TG Therapeutics, and Viela Bio. Ms. Ross has consulted for EMD Serono, BMS, Horizon, Alexion, TG Therapeutics, Novartis, Roche, and Sanofi.

NASHVILLE, Tennessee — In pediatric multiple sclerosis (MS), the optimal dose of ocrelizumab is the same as the 600 mg adult dose for patients weighing more than 35 kg, according to pharmacokinetic/pharmacodynamic (PK/PD) data from the OPERETTA 1 phase 2 clinical trial. The safety profile was similar to adult patients.

“While we believe the disease to be the same in children and adolescents, [MS] is distinguished by its very inflammatory nature, oftentimes causing two to three times the number of relapses per year as their adult-onset colleagues,” said Teri Schreiner, MD, during a presentation of the results at the annual meeting of the Consortium of Multiple Sclerosis Centers.

Approved therapies for pediatric MS include fingolimod in the United States and Europe, as well as dimethyl fumarate in Europe. “There’s a real need for high-efficacy treatment [in pediatric patients], again referring back to this disease being very inflammatory in children and adolescents. We oftentimes will use medications off label but this is clearly suboptimal as we lack safety data, and oftentimes run into difficulty with insurance approval of off-label use of medicine,” said Dr. Schreiner, who is an associate professor of neurology at University of Colorado School of Medicine, Aurora.

To determine the dose in pediatric patients that would produce comparable PK and PD to adults, the researchers dosed six patients aged 10-18 with 300 mg ocrelizumab, and 17 such patients with 600 mg ocrelizumab during a 24-week dose-exploration period, followed by a 264-week optional extension period. The cohorts were separated based on weight of less than or more than 40 kg. The mean ages were 11.2 years (mean weight, 34.9 kg) and 15.3 years (mean weight, 62.3 kg), respectively.

During the dose-exploration period, seven blood draws were performed to characterize PK. “When the PK data was analyzed, we saw that the proper cut-off point was 35 kilos. At less than 35 kilos, the appropriate dose was half of that adult dose, so 300 milligrams every 6 months, whereas above 35 kilos, the proper dose was actually 600, or the adult dose. Given the rarity of pediatric-onset MS patients less than 35 kilos, most patients will benefit from the adult dose of 600 milligrams twice yearly,” said Dr. Schreiner.

PD data were also encouraging. “The primary PD was the absence of CD-19 B cells, and that was tracked over time. While there were a few patients in both cohorts that had modest reconstitution, there was no patient in our study that crossed the retreatment threshold, and all blood samples were negative for anti-drug antibodies,” said Dr. Schreiner.

Adverse events occurred in five of six patients in the 300 mg group (83%; 4 grade 2, 1 grade 3) and 100% of patients in the 600 mg group (1 grade 1, 9 grade 2, 6 grade 3, 1 grade 4). There was one serious adverse event in the 300 mg group (16.7%) and four serious adverse events in the 600 mg group (23.5%). None led to treatment discontinuation. “This is largely consistent with what was seen in the adult studies of ocrelizumab,” said Dr. Schreiner.

Roche is now recruiting for the phase 3 OPERETTA 2 trial, which will use the 600 mg dose and compare outcomes to a fingolimod arm.
 

Establishing Safety in the Pediatric Population

“In [pediatric onset MS] it’s an important piece of information to design OPERETTA 2 and to dose ocrelizumab in pediatric-onset MS in general,” said Jeffrey A Cohen, MD, professor of neurology at the Cleveland Clinic, who was asked for comment.

During the Q&A period, Dr. Schreiner was asked whether it is possible to extrapolate experience from rituximab to the pediatric population. “They’re very similar molecules, and we know the mechanisms of action, but I think part of the importance of doing these studies is to get the safety data so that we actually can say with certainty, we are giving you a drug that has this list of side effects and we know about them definitively. We all use other high-efficacy medications, but I don’t think we can exactly extrapolate,” said Dr. Schreiner.

Session moderator Amy Perrin Ross, APN, noted the lack of approved pediatric therapies for MS. “This is an extremely important study, because we at least in the lower 48 are quite limited in our resources for approved pediatric cases. Information like this will make it easier for a potential pediatric indication, which would then make it easier on us to go after [treatment of the disease in this population]. The weight-based dosing, I think, is really a good thing. Patients have been asking for weight-based dosing on everything for many years,” she said.

Ahmed Obeidat, MD, PhD, associate professor at the Medical College of Wisconsin, also praised the study. “While pediatric MS is rare, it is an area of unmet need when it comes to disease-modifying therapies as only fingolimod is FDA-approved, and many use B cell–depleting therapy, such as rituximab, off label to treat children with MS with good outcomes. The need for guidance on the dosing of B cell–depleting therapy is a main priority for research in pediatric MS,” he said.

The study was funded by Roche. Dr. Schreiner has consulted for Roche and Cycle Pharmaceuticals. Dr. Cohen has consulted for Astoria, Bristol Myers Squibb, Convelo, EMD Serono Inc, FiND, INMune, and Sandoz. Dr. Obeidat has financial relationships with Alexion Pharmaceuticals, Banner Life Sciences, BD Biosciences, Biogen, Biologix Solutions, Bristol Myers Squibb, Celgene, EMD Serono, Genentech, GW Pharmaceuticals, Horizon Therapeutics, Jazz Pharmaceuticals, Novartis, Sandoz, Sanofi Genzyme, TG Therapeutics, and Viela Bio. Ms. Ross has consulted for EMD Serono, BMS, Horizon, Alexion, TG Therapeutics, Novartis, Roche, and Sanofi.

Novel, noninvasive testing is able to predict dementia onset with 80% accuracy up to 9 years before clinical diagnosis.

The results suggest resting-state functional MRI (rs-fMRI) could be used to identify a neural network signature of dementia risk early in the pathological course of the disease, an important advance as disease-modifying drugs such as those targeting amyloid beta are now becoming available.

“The brain has been changing for a long time before people get symptoms of dementia, and if we’re very precise about how we do it, we can actually, in principle, detect those changes, which could be really exciting,” study investigator Charles R. Marshall, PhD, professor of clinical neurology, Centre for Preventive Neurology, Wolfson Institute of Population Health, Queen Mary University of London, London, England, told this news organization.

“This could become a platform for screening people for risk status in the future, and it could one day make all the difference in terms of being able to prevent dementia,” he added.

The findings were published online in Nature Mental Health.

The rs-fMRI measures fluctuations in blood oxygen level–dependent signals across the brain, which reflect functional connectivity.

Brain regions commonly implicated in altered functional connectivity in Alzheimer’s disease (AD) are within the default-mode network (DMN). This is the group of regions “connecting with each other and communicating with each other when someone is just lying in an MRI scanner doing nothing, which is how it came to be called the default-mode network,” explained Dr. Marshall.

The DMN encompasses the medial prefrontal cortex, posterior cingulate cortex or precuneus, and bilateral inferior parietal cortices, as well as supplementary brain regions including the medial temporal lobes and temporal poles.

This network is believed to be selectively vulnerable to AD neuropathology. “Something about that network starts to be disrupted in the very earliest stages of Alzheimer’s disease,” said Dr. Marshall.

While this has been known for some time, “what we’ve not been able to do before is build a precise enough model of how the network is connected to be able to tell whether individual participants were going to get dementia or not,” he added.

The investigators used data from the UK Biobank, a large-scale biomedical database and research resource containing genetic and health information from about a half a million UK volunteer participants.

The analysis included 103 individuals with dementia (22 with prevalent dementia and 81 later diagnosed with dementia over a median of 3.7 years) and 1030 matched participants without dementia. All participants had MRI imaging between 2006 and 2010.

The total sample had a mean age of 70.4 years at the time of MRI data acquisition. For each participant, researchers extracted relevant data from 10 predefined regions of interest in the brain, which together defined their DMN. This included two midline regions and four regions in each hemisphere.
 

Greater Predictive Power

Researchers built a model using an approach related to how brain regions communicate with each other. “The model sort of incorporates what we know about how the changes that you see on a functional MRI scan relate to changes in the firing of brain cells, in a very precise way,” said Dr. Marshall.

The researchers then used a machine learning approach to develop a model for effective connectivity, which describes the causal influence of one brain region over another. “We trained a machine learning tool to recognize what a dementia-like pattern of connectivity looks like,” said Dr. Marshall.

Investigators controlled for potential confounders, including age, sex, handedness, in-scanner head motion, and geographical location of data acquisition.

The model was able to determine the difference in brain connectivity patterns between those who would go on to develop dementia and those who would not, with an accuracy of 82% up to 9 years before an official diagnosis was made.

When the researchers trained a model to use brain connections to predict time to diagnosis, the predicted time to diagnosis and actual time to diagnosis were within about 2 years.

This effective connectivity approach has much more predictive power than memory test scores or brain structural measures, said Dr. Marshall. “We looked at brain volumes and they performed very poorly, only just better than tossing a coin, and the same with cognitive test scores, which were only just better than chance.”

As for markers of amyloid beta and tau in the brain, these are “very useful diagnostically” but only when someone has symptoms, said Dr. Marshall. He noted people live for years with these proteins without developing dementia symptoms.

“We wouldn’t necessarily want to expose somebody who has a brain full of amyloid but was not going to get symptoms for the next 20 years to a treatment, but if we knew that person was highly likely to develop symptoms of dementia in the next 5 years, then we probably would,” he said.

Dr. Marshall believes the predictive power of all these diagnostic tools could be boosted if they were used together.
 

Potential for Early Detection, Treatment

Researchers examined a number of modifiable dementia risk factors, including hearing loss, depression, hypertension, and physical inactivity. They found self-reported social isolation was the only variable that showed a significant association with effective connectivity, meaning those who are socially isolated were more likely to have a “dementia-like” pattern of DMN effective connectivity. This finding suggests social isolation is a cause, rather than a consequence, of dementia.

The study also revealed associations between DMN effective connectivity and AD polygenic risk score, derived from meta-analysis of multiple external genome-wide association study sources.

A predictive tool that uses rs-fMRI could also help select participants at a high risk for dementia to investigate potential treatments. “There’s good reason to think that if we could go in earlier with, for example, anti-amyloid treatments, they’re more likely to be effective,” said Dr. Marshall.

The new test might eventually have value as a population screening tool, something akin to colon cancer screening, he added. “We don’t send everyone for a colonoscopy; you do a kind of pre-screening test at home, and if that’s positive, then you get called in for a colonoscopy.”

The researchers looked at all-cause dementia and not just AD because dementia subtype diagnoses in the UK Biobank “are not at all reliable,” said Dr. Marshall.

Study limitations included the fact that UK Biobank participants are healthier and less socioeconomically deprived than the general population and are predominantly White. Another study limitation was that labeling of cases and controls depended on clinician coding rather than on standardized diagnostic criteria.
 

Kudos, Caveats

In a release from the Science Media Center, a nonprofit organization promoting voices and views of the scientific community, Sebastian Walsh, National Institute for Health and Care Research doctoral fellow in Public Health Medicine, University of Cambridge, Cambridge, England, said the results are “potentially exciting,” and he praised the way the team conducted the study.

However, he noted some caveats, including the small sample size, with only about 100 people with dementia, and the relatively short time between the brain scan and diagnosis (an average of 3.7 years).

Dr. Walsh emphasized the importance of replicating the findings “in bigger samples with a much longer delay between scan and onset of cognitive symptoms.”

He also noted the average age of study participants was 70 years, whereas the average age at which individuals in the United Kingdom develop dementia is mid to late 80s, “so we need to see these results repeated for more diverse and older samples.”

He also noted that MRI scans are expensive, and the approach used in the study needs “a high-quality scan which requires people to keep their head still.”

Also commenting, Andrew Doig, PhD, professor, Division of Neuroscience, the University of Manchester, Manchester, England, said the MRI connectivity method used in the study might form part of a broader diagnostic approach.

“Dementia is a complex condition, and it is unlikely that we will ever find one simple test that can accurately diagnose it,” Dr. Doig noted. “Within a few years, however, there is good reason to believe that we will be routinely testing for dementia in middle-aged people, using a combination of methods, such as a blood test, followed by imaging.”

“The MRI connectivity method described here could form part of this diagnostic platform. We will then have an excellent understanding of which people are likely to benefit most from the new generation of dementia drugs,” he said.

Dr. Marshall and Dr. Walsh reported no relevant disclosures. Dr. Doig reported that he is a founder, shareholder, and consultant for PharmaKure Ltd, which is developing new diagnostics for neurodegenerative diseases using blood biomarkers.

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

Novel, noninvasive testing is able to predict dementia onset with 80% accuracy up to 9 years before clinical diagnosis.

The results suggest resting-state functional MRI (rs-fMRI) could be used to identify a neural network signature of dementia risk early in the pathological course of the disease, an important advance as disease-modifying drugs such as those targeting amyloid beta are now becoming available.

“The brain has been changing for a long time before people get symptoms of dementia, and if we’re very precise about how we do it, we can actually, in principle, detect those changes, which could be really exciting,” study investigator Charles R. Marshall, PhD, professor of clinical neurology, Centre for Preventive Neurology, Wolfson Institute of Population Health, Queen Mary University of London, London, England, told this news organization.

“This could become a platform for screening people for risk status in the future, and it could one day make all the difference in terms of being able to prevent dementia,” he added.

The findings were published online in Nature Mental Health.

The rs-fMRI measures fluctuations in blood oxygen level–dependent signals across the brain, which reflect functional connectivity.

Brain regions commonly implicated in altered functional connectivity in Alzheimer’s disease (AD) are within the default-mode network (DMN). This is the group of regions “connecting with each other and communicating with each other when someone is just lying in an MRI scanner doing nothing, which is how it came to be called the default-mode network,” explained Dr. Marshall.

The DMN encompasses the medial prefrontal cortex, posterior cingulate cortex or precuneus, and bilateral inferior parietal cortices, as well as supplementary brain regions including the medial temporal lobes and temporal poles.

This network is believed to be selectively vulnerable to AD neuropathology. “Something about that network starts to be disrupted in the very earliest stages of Alzheimer’s disease,” said Dr. Marshall.

While this has been known for some time, “what we’ve not been able to do before is build a precise enough model of how the network is connected to be able to tell whether individual participants were going to get dementia or not,” he added.

The investigators used data from the UK Biobank, a large-scale biomedical database and research resource containing genetic and health information from about a half a million UK volunteer participants.

The analysis included 103 individuals with dementia (22 with prevalent dementia and 81 later diagnosed with dementia over a median of 3.7 years) and 1030 matched participants without dementia. All participants had MRI imaging between 2006 and 2010.

The total sample had a mean age of 70.4 years at the time of MRI data acquisition. For each participant, researchers extracted relevant data from 10 predefined regions of interest in the brain, which together defined their DMN. This included two midline regions and four regions in each hemisphere.
 

Greater Predictive Power

Researchers built a model using an approach related to how brain regions communicate with each other. “The model sort of incorporates what we know about how the changes that you see on a functional MRI scan relate to changes in the firing of brain cells, in a very precise way,” said Dr. Marshall.

The researchers then used a machine learning approach to develop a model for effective connectivity, which describes the causal influence of one brain region over another. “We trained a machine learning tool to recognize what a dementia-like pattern of connectivity looks like,” said Dr. Marshall.

Investigators controlled for potential confounders, including age, sex, handedness, in-scanner head motion, and geographical location of data acquisition.

The model was able to determine the difference in brain connectivity patterns between those who would go on to develop dementia and those who would not, with an accuracy of 82% up to 9 years before an official diagnosis was made.

When the researchers trained a model to use brain connections to predict time to diagnosis, the predicted time to diagnosis and actual time to diagnosis were within about 2 years.

This effective connectivity approach has much more predictive power than memory test scores or brain structural measures, said Dr. Marshall. “We looked at brain volumes and they performed very poorly, only just better than tossing a coin, and the same with cognitive test scores, which were only just better than chance.”

As for markers of amyloid beta and tau in the brain, these are “very useful diagnostically” but only when someone has symptoms, said Dr. Marshall. He noted people live for years with these proteins without developing dementia symptoms.

“We wouldn’t necessarily want to expose somebody who has a brain full of amyloid but was not going to get symptoms for the next 20 years to a treatment, but if we knew that person was highly likely to develop symptoms of dementia in the next 5 years, then we probably would,” he said.

Dr. Marshall believes the predictive power of all these diagnostic tools could be boosted if they were used together.
 

Potential for Early Detection, Treatment

Researchers examined a number of modifiable dementia risk factors, including hearing loss, depression, hypertension, and physical inactivity. They found self-reported social isolation was the only variable that showed a significant association with effective connectivity, meaning those who are socially isolated were more likely to have a “dementia-like” pattern of DMN effective connectivity. This finding suggests social isolation is a cause, rather than a consequence, of dementia.

The study also revealed associations between DMN effective connectivity and AD polygenic risk score, derived from meta-analysis of multiple external genome-wide association study sources.

A predictive tool that uses rs-fMRI could also help select participants at a high risk for dementia to investigate potential treatments. “There’s good reason to think that if we could go in earlier with, for example, anti-amyloid treatments, they’re more likely to be effective,” said Dr. Marshall.

The new test might eventually have value as a population screening tool, something akin to colon cancer screening, he added. “We don’t send everyone for a colonoscopy; you do a kind of pre-screening test at home, and if that’s positive, then you get called in for a colonoscopy.”

The researchers looked at all-cause dementia and not just AD because dementia subtype diagnoses in the UK Biobank “are not at all reliable,” said Dr. Marshall.

Study limitations included the fact that UK Biobank participants are healthier and less socioeconomically deprived than the general population and are predominantly White. Another study limitation was that labeling of cases and controls depended on clinician coding rather than on standardized diagnostic criteria.
 

Kudos, Caveats

In a release from the Science Media Center, a nonprofit organization promoting voices and views of the scientific community, Sebastian Walsh, National Institute for Health and Care Research doctoral fellow in Public Health Medicine, University of Cambridge, Cambridge, England, said the results are “potentially exciting,” and he praised the way the team conducted the study.

However, he noted some caveats, including the small sample size, with only about 100 people with dementia, and the relatively short time between the brain scan and diagnosis (an average of 3.7 years).

Dr. Walsh emphasized the importance of replicating the findings “in bigger samples with a much longer delay between scan and onset of cognitive symptoms.”

He also noted the average age of study participants was 70 years, whereas the average age at which individuals in the United Kingdom develop dementia is mid to late 80s, “so we need to see these results repeated for more diverse and older samples.”

He also noted that MRI scans are expensive, and the approach used in the study needs “a high-quality scan which requires people to keep their head still.”

Also commenting, Andrew Doig, PhD, professor, Division of Neuroscience, the University of Manchester, Manchester, England, said the MRI connectivity method used in the study might form part of a broader diagnostic approach.

“Dementia is a complex condition, and it is unlikely that we will ever find one simple test that can accurately diagnose it,” Dr. Doig noted. “Within a few years, however, there is good reason to believe that we will be routinely testing for dementia in middle-aged people, using a combination of methods, such as a blood test, followed by imaging.”

“The MRI connectivity method described here could form part of this diagnostic platform. We will then have an excellent understanding of which people are likely to benefit most from the new generation of dementia drugs,” he said.

Dr. Marshall and Dr. Walsh reported no relevant disclosures. Dr. Doig reported that he is a founder, shareholder, and consultant for PharmaKure Ltd, which is developing new diagnostics for neurodegenerative diseases using blood biomarkers.

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

Novel, noninvasive testing is able to predict dementia onset with 80% accuracy up to 9 years before clinical diagnosis.

The results suggest resting-state functional MRI (rs-fMRI) could be used to identify a neural network signature of dementia risk early in the pathological course of the disease, an important advance as disease-modifying drugs such as those targeting amyloid beta are now becoming available.

“The brain has been changing for a long time before people get symptoms of dementia, and if we’re very precise about how we do it, we can actually, in principle, detect those changes, which could be really exciting,” study investigator Charles R. Marshall, PhD, professor of clinical neurology, Centre for Preventive Neurology, Wolfson Institute of Population Health, Queen Mary University of London, London, England, told this news organization.

“This could become a platform for screening people for risk status in the future, and it could one day make all the difference in terms of being able to prevent dementia,” he added.

The findings were published online in Nature Mental Health.

The rs-fMRI measures fluctuations in blood oxygen level–dependent signals across the brain, which reflect functional connectivity.

Brain regions commonly implicated in altered functional connectivity in Alzheimer’s disease (AD) are within the default-mode network (DMN). This is the group of regions “connecting with each other and communicating with each other when someone is just lying in an MRI scanner doing nothing, which is how it came to be called the default-mode network,” explained Dr. Marshall.

The DMN encompasses the medial prefrontal cortex, posterior cingulate cortex or precuneus, and bilateral inferior parietal cortices, as well as supplementary brain regions including the medial temporal lobes and temporal poles.

This network is believed to be selectively vulnerable to AD neuropathology. “Something about that network starts to be disrupted in the very earliest stages of Alzheimer’s disease,” said Dr. Marshall.

While this has been known for some time, “what we’ve not been able to do before is build a precise enough model of how the network is connected to be able to tell whether individual participants were going to get dementia or not,” he added.

The investigators used data from the UK Biobank, a large-scale biomedical database and research resource containing genetic and health information from about a half a million UK volunteer participants.

The analysis included 103 individuals with dementia (22 with prevalent dementia and 81 later diagnosed with dementia over a median of 3.7 years) and 1030 matched participants without dementia. All participants had MRI imaging between 2006 and 2010.

The total sample had a mean age of 70.4 years at the time of MRI data acquisition. For each participant, researchers extracted relevant data from 10 predefined regions of interest in the brain, which together defined their DMN. This included two midline regions and four regions in each hemisphere.
 

Greater Predictive Power

Researchers built a model using an approach related to how brain regions communicate with each other. “The model sort of incorporates what we know about how the changes that you see on a functional MRI scan relate to changes in the firing of brain cells, in a very precise way,” said Dr. Marshall.

The researchers then used a machine learning approach to develop a model for effective connectivity, which describes the causal influence of one brain region over another. “We trained a machine learning tool to recognize what a dementia-like pattern of connectivity looks like,” said Dr. Marshall.

Investigators controlled for potential confounders, including age, sex, handedness, in-scanner head motion, and geographical location of data acquisition.

The model was able to determine the difference in brain connectivity patterns between those who would go on to develop dementia and those who would not, with an accuracy of 82% up to 9 years before an official diagnosis was made.

When the researchers trained a model to use brain connections to predict time to diagnosis, the predicted time to diagnosis and actual time to diagnosis were within about 2 years.

This effective connectivity approach has much more predictive power than memory test scores or brain structural measures, said Dr. Marshall. “We looked at brain volumes and they performed very poorly, only just better than tossing a coin, and the same with cognitive test scores, which were only just better than chance.”

As for markers of amyloid beta and tau in the brain, these are “very useful diagnostically” but only when someone has symptoms, said Dr. Marshall. He noted people live for years with these proteins without developing dementia symptoms.

“We wouldn’t necessarily want to expose somebody who has a brain full of amyloid but was not going to get symptoms for the next 20 years to a treatment, but if we knew that person was highly likely to develop symptoms of dementia in the next 5 years, then we probably would,” he said.

Dr. Marshall believes the predictive power of all these diagnostic tools could be boosted if they were used together.
 

Potential for Early Detection, Treatment

Researchers examined a number of modifiable dementia risk factors, including hearing loss, depression, hypertension, and physical inactivity. They found self-reported social isolation was the only variable that showed a significant association with effective connectivity, meaning those who are socially isolated were more likely to have a “dementia-like” pattern of DMN effective connectivity. This finding suggests social isolation is a cause, rather than a consequence, of dementia.

The study also revealed associations between DMN effective connectivity and AD polygenic risk score, derived from meta-analysis of multiple external genome-wide association study sources.

A predictive tool that uses rs-fMRI could also help select participants at a high risk for dementia to investigate potential treatments. “There’s good reason to think that if we could go in earlier with, for example, anti-amyloid treatments, they’re more likely to be effective,” said Dr. Marshall.

The new test might eventually have value as a population screening tool, something akin to colon cancer screening, he added. “We don’t send everyone for a colonoscopy; you do a kind of pre-screening test at home, and if that’s positive, then you get called in for a colonoscopy.”

The researchers looked at all-cause dementia and not just AD because dementia subtype diagnoses in the UK Biobank “are not at all reliable,” said Dr. Marshall.

Study limitations included the fact that UK Biobank participants are healthier and less socioeconomically deprived than the general population and are predominantly White. Another study limitation was that labeling of cases and controls depended on clinician coding rather than on standardized diagnostic criteria.
 

Kudos, Caveats

In a release from the Science Media Center, a nonprofit organization promoting voices and views of the scientific community, Sebastian Walsh, National Institute for Health and Care Research doctoral fellow in Public Health Medicine, University of Cambridge, Cambridge, England, said the results are “potentially exciting,” and he praised the way the team conducted the study.

However, he noted some caveats, including the small sample size, with only about 100 people with dementia, and the relatively short time between the brain scan and diagnosis (an average of 3.7 years).

Dr. Walsh emphasized the importance of replicating the findings “in bigger samples with a much longer delay between scan and onset of cognitive symptoms.”

He also noted the average age of study participants was 70 years, whereas the average age at which individuals in the United Kingdom develop dementia is mid to late 80s, “so we need to see these results repeated for more diverse and older samples.”

He also noted that MRI scans are expensive, and the approach used in the study needs “a high-quality scan which requires people to keep their head still.”

Also commenting, Andrew Doig, PhD, professor, Division of Neuroscience, the University of Manchester, Manchester, England, said the MRI connectivity method used in the study might form part of a broader diagnostic approach.

“Dementia is a complex condition, and it is unlikely that we will ever find one simple test that can accurately diagnose it,” Dr. Doig noted. “Within a few years, however, there is good reason to believe that we will be routinely testing for dementia in middle-aged people, using a combination of methods, such as a blood test, followed by imaging.”

“The MRI connectivity method described here could form part of this diagnostic platform. We will then have an excellent understanding of which people are likely to benefit most from the new generation of dementia drugs,” he said.

Dr. Marshall and Dr. Walsh reported no relevant disclosures. Dr. Doig reported that he is a founder, shareholder, and consultant for PharmaKure Ltd, which is developing new diagnostics for neurodegenerative diseases using blood biomarkers.

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

TOPLINE:

High-frequency electric nerve block significantly reduced postamputation pain in a new study, presenting a potential new therapeutic option for amputees.

METHODOLOGY:

• The study enrolled 180 patients with unilateral lower limb amputations who were experiencing severe post-procedure pain.
• Participants were randomized 1:1 to receive 3 months of treatment with either a high-frequency nerve block (Altius; Neuros Medical) or an active sham.
• Effectiveness was measured by the percentage of participants achieving at least a 50% reduction in pain in more than half of the treatment sessions.
• The researchers attempted to control for variables including pain type and baseline pain intensity.

TAKEAWAY:

• A total of 24.7% of patients in the group that received the nerve block were responders at 30 minutes post-treatment, significantly higher than 7.1% in the control group (P = .002).
• The rate of response rose to 46.8% in the treatment group at 120 minutes, compared with 22.2% in the sham group (P = .001).
• Patients who received the nerve block reported a greater improvement in their score on the Brief Pain Inventory than those in the sham arm — 2.3 ± 0.29 vs 1.3 ± 0.26, respectively (P = .01).
• Use of opioids trended toward a greater reduction in the treatment group, although that finding was not statistically significant.

IN PRACTICE:

The results suggested “high-frequency electric nerve block could be a viable option for managing chronic post-amputation pain, potentially improving patients’ quality of life and reducing reliance on opioids,” the authors wrote. “The study addresses a critical gap in treatment options for amputees suffering from persistent pain, offering evidence for a novel therapeutic approach.”

“We have never seen a study of this magnitude and rigor in this patient population,” said lead author Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, in a press release about the data. “The data demonstrated clear and lasting benefit of treatment for pain reduction and functional outcomes at 3 months, creating great optimism for the long-term study results. These findings represent a significant advancement for an at-risk and underserved patient population in desperate need of reliable and effective treatment.”

SOURCE:

The study was led by Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, and was published online in the Journal of Pain Research.

LIMITATIONS:

The sample size of 180 participants may limit the generalizability of the findings to all amputees. A 3-month duration for assessing treatment efficacy may not capture long-term outcomes and effects. The active-sham control design, while rigorous, may not fully account for the placebo effects inherent in pain perception studies.

DISCLOSURES:

The QUEST study was funded by Neuros Medical Inc. Dr. Kapural reported personal fees from various medical companies, unrelated to this work. No other conflicts of interest were reported in this work.

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 appeared on Medscape.com.

TOPLINE:

High-frequency electric nerve block significantly reduced postamputation pain in a new study, presenting a potential new therapeutic option for amputees.

METHODOLOGY:

• The study enrolled 180 patients with unilateral lower limb amputations who were experiencing severe post-procedure pain.
• Participants were randomized 1:1 to receive 3 months of treatment with either a high-frequency nerve block (Altius; Neuros Medical) or an active sham.
• Effectiveness was measured by the percentage of participants achieving at least a 50% reduction in pain in more than half of the treatment sessions.
• The researchers attempted to control for variables including pain type and baseline pain intensity.

TAKEAWAY:

• A total of 24.7% of patients in the group that received the nerve block were responders at 30 minutes post-treatment, significantly higher than 7.1% in the control group (P = .002).
• The rate of response rose to 46.8% in the treatment group at 120 minutes, compared with 22.2% in the sham group (P = .001).
• Patients who received the nerve block reported a greater improvement in their score on the Brief Pain Inventory than those in the sham arm — 2.3 ± 0.29 vs 1.3 ± 0.26, respectively (P = .01).
• Use of opioids trended toward a greater reduction in the treatment group, although that finding was not statistically significant.

IN PRACTICE:

The results suggested “high-frequency electric nerve block could be a viable option for managing chronic post-amputation pain, potentially improving patients’ quality of life and reducing reliance on opioids,” the authors wrote. “The study addresses a critical gap in treatment options for amputees suffering from persistent pain, offering evidence for a novel therapeutic approach.”

“We have never seen a study of this magnitude and rigor in this patient population,” said lead author Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, in a press release about the data. “The data demonstrated clear and lasting benefit of treatment for pain reduction and functional outcomes at 3 months, creating great optimism for the long-term study results. These findings represent a significant advancement for an at-risk and underserved patient population in desperate need of reliable and effective treatment.”

SOURCE:

The study was led by Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, and was published online in the Journal of Pain Research.

LIMITATIONS:

The sample size of 180 participants may limit the generalizability of the findings to all amputees. A 3-month duration for assessing treatment efficacy may not capture long-term outcomes and effects. The active-sham control design, while rigorous, may not fully account for the placebo effects inherent in pain perception studies.

DISCLOSURES:

The QUEST study was funded by Neuros Medical Inc. Dr. Kapural reported personal fees from various medical companies, unrelated to this work. No other conflicts of interest were reported in this work.

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 appeared on Medscape.com.

TOPLINE:

High-frequency electric nerve block significantly reduced postamputation pain in a new study, presenting a potential new therapeutic option for amputees.

METHODOLOGY:

• The study enrolled 180 patients with unilateral lower limb amputations who were experiencing severe post-procedure pain.
• Participants were randomized 1:1 to receive 3 months of treatment with either a high-frequency nerve block (Altius; Neuros Medical) or an active sham.
• Effectiveness was measured by the percentage of participants achieving at least a 50% reduction in pain in more than half of the treatment sessions.
• The researchers attempted to control for variables including pain type and baseline pain intensity.

TAKEAWAY:

• A total of 24.7% of patients in the group that received the nerve block were responders at 30 minutes post-treatment, significantly higher than 7.1% in the control group (P = .002).
• The rate of response rose to 46.8% in the treatment group at 120 minutes, compared with 22.2% in the sham group (P = .001).
• Patients who received the nerve block reported a greater improvement in their score on the Brief Pain Inventory than those in the sham arm — 2.3 ± 0.29 vs 1.3 ± 0.26, respectively (P = .01).
• Use of opioids trended toward a greater reduction in the treatment group, although that finding was not statistically significant.

IN PRACTICE:

The results suggested “high-frequency electric nerve block could be a viable option for managing chronic post-amputation pain, potentially improving patients’ quality of life and reducing reliance on opioids,” the authors wrote. “The study addresses a critical gap in treatment options for amputees suffering from persistent pain, offering evidence for a novel therapeutic approach.”

“We have never seen a study of this magnitude and rigor in this patient population,” said lead author Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, in a press release about the data. “The data demonstrated clear and lasting benefit of treatment for pain reduction and functional outcomes at 3 months, creating great optimism for the long-term study results. These findings represent a significant advancement for an at-risk and underserved patient population in desperate need of reliable and effective treatment.”

SOURCE:

The study was led by Leonardo Kapural, MD, PhD, of the Carolinas Pain Institute in Winston-Salem, North Carolina, and was published online in the Journal of Pain Research.

LIMITATIONS:

The sample size of 180 participants may limit the generalizability of the findings to all amputees. A 3-month duration for assessing treatment efficacy may not capture long-term outcomes and effects. The active-sham control design, while rigorous, may not fully account for the placebo effects inherent in pain perception studies.

DISCLOSURES:

The QUEST study was funded by Neuros Medical Inc. Dr. Kapural reported personal fees from various medical companies, unrelated to this work. No other conflicts of interest were reported in this work.

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 appeared on Medscape.com.

NASHVILLE, TENNESSEE — Exercise has a long history in multiple sclerosis (MS). In 1838, the Scottish physician John Abercrombie reported that a patient with “a diminution of muscular power,” who could walk but only unsteadily, decided after various failed treatments like “evacuations and spare diet” to try “violent exercise.” He walked 5-6 miles on a warm evening, as quickly as he was able, and returned home “much fatigued, and considerably heated. Next morning he had severe pains in the calves of his legs, but his other complaints were much diminished, and in a few days disappeared. He has ever since enjoyed good health,” Dr. Abercrombie was quoted in Multiple Sclerosis: The History of a Disease by T. Jock Murray.

The first randomized, controlled trial of an exercise intervention for MS didn’t appear in the literature until 1988, but more than 200 have been published in the years since, according to Robert Motl, PhD, who spoke about exercise interventions for MS at the annual meeting of the Consortium of Multiple Sclerosis Centers.

NASHVILLE, TENNESSEE — Exercise has a long history in multiple sclerosis (MS). In 1838, the Scottish physician John Abercrombie reported that a patient with “a diminution of muscular power,” who could walk but only unsteadily, decided after various failed treatments like “evacuations and spare diet” to try “violent exercise.” He walked 5-6 miles on a warm evening, as quickly as he was able, and returned home “much fatigued, and considerably heated. Next morning he had severe pains in the calves of his legs, but his other complaints were much diminished, and in a few days disappeared. He has ever since enjoyed good health,” Dr. Abercrombie was quoted in Multiple Sclerosis: The History of a Disease by T. Jock Murray.

The first randomized, controlled trial of an exercise intervention for MS didn’t appear in the literature until 1988, but more than 200 have been published in the years since, according to Robert Motl, PhD, who spoke about exercise interventions for MS at the annual meeting of the Consortium of Multiple Sclerosis Centers.

NASHVILLE, TENNESSEE — Exercise has a long history in multiple sclerosis (MS). In 1838, the Scottish physician John Abercrombie reported that a patient with “a diminution of muscular power,” who could walk but only unsteadily, decided after various failed treatments like “evacuations and spare diet” to try “violent exercise.” He walked 5-6 miles on a warm evening, as quickly as he was able, and returned home “much fatigued, and considerably heated. Next morning he had severe pains in the calves of his legs, but his other complaints were much diminished, and in a few days disappeared. He has ever since enjoyed good health,” Dr. Abercrombie was quoted in Multiple Sclerosis: The History of a Disease by T. Jock Murray.

The first randomized, controlled trial of an exercise intervention for MS didn’t appear in the literature until 1988, but more than 200 have been published in the years since, according to Robert Motl, PhD, who spoke about exercise interventions for MS at the annual meeting of the Consortium of Multiple Sclerosis Centers.

HOUSTON — Narcolepsy is associated with a significantly increased risk for cardiovascular disease (CVD) and major adverse cardiac events (MACEs), independent of common comorbid conditions and medications commonly used to treat the chronic sleep disorder, according to two new studies.

A nationwide analysis revealed that people with narcolepsy had a 77% higher risk for CVD and an 82% higher risk for MACE than those without the disorder.

“These findings indicate that it is important for clinicians to regularly monitor patients for cardiovascular disease and take this into consideration when recommending specific treatments for narcolepsy,” study investigators Christopher Kaufmann, PhD; Munaza Riaz, PharmD, MPhil; and Rakesh Bhattacharjee, MD, told this news organization.

“Additionally, physicians should consider monitoring the presence of other health conditions as contributing factors to the risk of CVD,” they said. Dr. Kaufmann and Dr. Riaz are with the University of Florida, Gainesville, Florida, and Dr. Bhattacharjee is with the University of California, San Diego.

They presented their research at SLEEP 2024: 38th Annual Meeting of the Associated Professional Sleep Societies.
 

Independent Risk Factor

The National Institute of Neurological Disorders and Stroke reports an estimated 125,000 to 200,000 people in the United States live with narcolepsy. The condition often coexists with other common health conditions including obstructive sleep apnea (OSA), diabetes, and other comorbidities, which can all contribute to the risk for CVD.

This raises doubt as to whether narcolepsy itself directly leads to CVD or if it is the result of these comorbid health conditions. Additionally, some medications used to treat narcolepsy carry their own cardiovascular risks.

Using the IBM MarketScan Commercial and Medicare supplemental databases, the researchers identified 34,562 adults with a diagnosis of narcolepsy and a propensity-matched comparison cohort of 100,405 adults without narcolepsy. The patients had a mean age of 40 years, and 62% were women.

Compared with adults without narcolepsy, those with the chronic sleep disorder that causes overwhelming daytime drowsiness had a 77% increased risk for any CVD (hazard ratio [HR], 1.77) and an 82% increased risk for MACE (HR, 1.82).

They also had an increased risk for stroke (HR, 2.04), heart failure or myocardial infarction (MI; HR, 1.64), and atrial fibrillation (HR, 1.58).

The results were similar in a separate analysis of the same population that also controlled for baseline use of stimulants, oxybates, and wake-promoting agents — medications commonly used to treat excessive daytime sleepiness associated with narcolepsy.

In this analysis, narcolepsy was associated with an 89% higher risk for CVD (HR, 1.89) and a 95% increased risk for MACE (HR, 1.95). The risk for any stroke (HR, 2.06), heart failure (HR, 1.90), atrial fibrillation (HR, 1.66), and MI (HR, 1.93) was also higher in those with narcolepsy.

“Our study found that even after considering the presence of health conditions like obstructive sleep apnea, diabetes, hypertension, hyperlipidemia, and even depression, as well as medication use, there still appears to be an independent relationship between narcolepsy and CVD,” the investigators said.

They cautioned that the mechanisms explaining the link between CVD and narcolepsy are unclear and warrant further study.

“Sleep fragmentation is a hallmark of narcolepsy, and it is speculated that this fragmentation, which may trigger disturbances in autonomic function, predisposes individuals to CVD. In rodent models, a possible link has been observed between hypocretin — a central neurotransmitter that is reduced or deficient in patients with narcolepsy — and atherosclerosis.

“However, it remains uncertain whether this is the primary mechanism related to CVD,” they commented.
 

Compelling Evidence for Higher CVD

Commenting on the findings for this news organization, Shaheen Lakhan, MD, a neurologist and researcher based in Miami, Florida, called for narcolepsy to be recognized as a significant contributor to higher CVD risk.

“Given the compelling evidence linking narcolepsy to a higher incidence of cardiovascular disease, it is crucial that narcolepsy be included in clinical guidelines and risk assessment tools alongside other known risk factors,” said Dr. Lakhan, who was not involved in this research.

“Physicians and health care providers should proactively address the increased cardiovascular risk associated with narcolepsy by incorporating preventive strategies and interventions into the management of patients with this condition,” Dr. Lakhan suggested.

Regular CVD screening, a healthier lifestyle, and targeted therapies could all decrease cardiac risk, Dr. Lakhan added.

“Ultimately, novel disease-modifying therapies for narcolepsy should target the core mechanisms driving the increased cardiovascular risk associated with this condition. By elucidating the specific biological pathways and developing targeted therapies that address the unique challenges faced by narcolepsy patients, we can effectively mitigate the risk,” Dr. Lakhan said.

The studies were funded by the Sleep Research Society Foundation. The authors and Dr. Lakhan had no relevant disclosures.

A version of this article appeared on Medscape.com.

HOUSTON — Narcolepsy is associated with a significantly increased risk for cardiovascular disease (CVD) and major adverse cardiac events (MACEs), independent of common comorbid conditions and medications commonly used to treat the chronic sleep disorder, according to two new studies.

A nationwide analysis revealed that people with narcolepsy had a 77% higher risk for CVD and an 82% higher risk for MACE than those without the disorder.

“These findings indicate that it is important for clinicians to regularly monitor patients for cardiovascular disease and take this into consideration when recommending specific treatments for narcolepsy,” study investigators Christopher Kaufmann, PhD; Munaza Riaz, PharmD, MPhil; and Rakesh Bhattacharjee, MD, told this news organization.

“Additionally, physicians should consider monitoring the presence of other health conditions as contributing factors to the risk of CVD,” they said. Dr. Kaufmann and Dr. Riaz are with the University of Florida, Gainesville, Florida, and Dr. Bhattacharjee is with the University of California, San Diego.

They presented their research at SLEEP 2024: 38th Annual Meeting of the Associated Professional Sleep Societies.
 

Independent Risk Factor

The National Institute of Neurological Disorders and Stroke reports an estimated 125,000 to 200,000 people in the United States live with narcolepsy. The condition often coexists with other common health conditions including obstructive sleep apnea (OSA), diabetes, and other comorbidities, which can all contribute to the risk for CVD.

This raises doubt as to whether narcolepsy itself directly leads to CVD or if it is the result of these comorbid health conditions. Additionally, some medications used to treat narcolepsy carry their own cardiovascular risks.

Using the IBM MarketScan Commercial and Medicare supplemental databases, the researchers identified 34,562 adults with a diagnosis of narcolepsy and a propensity-matched comparison cohort of 100,405 adults without narcolepsy. The patients had a mean age of 40 years, and 62% were women.

Compared with adults without narcolepsy, those with the chronic sleep disorder that causes overwhelming daytime drowsiness had a 77% increased risk for any CVD (hazard ratio [HR], 1.77) and an 82% increased risk for MACE (HR, 1.82).

They also had an increased risk for stroke (HR, 2.04), heart failure or myocardial infarction (MI; HR, 1.64), and atrial fibrillation (HR, 1.58).

The results were similar in a separate analysis of the same population that also controlled for baseline use of stimulants, oxybates, and wake-promoting agents — medications commonly used to treat excessive daytime sleepiness associated with narcolepsy.

In this analysis, narcolepsy was associated with an 89% higher risk for CVD (HR, 1.89) and a 95% increased risk for MACE (HR, 1.95). The risk for any stroke (HR, 2.06), heart failure (HR, 1.90), atrial fibrillation (HR, 1.66), and MI (HR, 1.93) was also higher in those with narcolepsy.

“Our study found that even after considering the presence of health conditions like obstructive sleep apnea, diabetes, hypertension, hyperlipidemia, and even depression, as well as medication use, there still appears to be an independent relationship between narcolepsy and CVD,” the investigators said.

They cautioned that the mechanisms explaining the link between CVD and narcolepsy are unclear and warrant further study.

“Sleep fragmentation is a hallmark of narcolepsy, and it is speculated that this fragmentation, which may trigger disturbances in autonomic function, predisposes individuals to CVD. In rodent models, a possible link has been observed between hypocretin — a central neurotransmitter that is reduced or deficient in patients with narcolepsy — and atherosclerosis.

“However, it remains uncertain whether this is the primary mechanism related to CVD,” they commented.
 

Compelling Evidence for Higher CVD

Commenting on the findings for this news organization, Shaheen Lakhan, MD, a neurologist and researcher based in Miami, Florida, called for narcolepsy to be recognized as a significant contributor to higher CVD risk.

“Given the compelling evidence linking narcolepsy to a higher incidence of cardiovascular disease, it is crucial that narcolepsy be included in clinical guidelines and risk assessment tools alongside other known risk factors,” said Dr. Lakhan, who was not involved in this research.

“Physicians and health care providers should proactively address the increased cardiovascular risk associated with narcolepsy by incorporating preventive strategies and interventions into the management of patients with this condition,” Dr. Lakhan suggested.

Regular CVD screening, a healthier lifestyle, and targeted therapies could all decrease cardiac risk, Dr. Lakhan added.

“Ultimately, novel disease-modifying therapies for narcolepsy should target the core mechanisms driving the increased cardiovascular risk associated with this condition. By elucidating the specific biological pathways and developing targeted therapies that address the unique challenges faced by narcolepsy patients, we can effectively mitigate the risk,” Dr. Lakhan said.

The studies were funded by the Sleep Research Society Foundation. The authors and Dr. Lakhan had no relevant disclosures.

A version of this article appeared on Medscape.com.

HOUSTON — Narcolepsy is associated with a significantly increased risk for cardiovascular disease (CVD) and major adverse cardiac events (MACEs), independent of common comorbid conditions and medications commonly used to treat the chronic sleep disorder, according to two new studies.

A nationwide analysis revealed that people with narcolepsy had a 77% higher risk for CVD and an 82% higher risk for MACE than those without the disorder.

“These findings indicate that it is important for clinicians to regularly monitor patients for cardiovascular disease and take this into consideration when recommending specific treatments for narcolepsy,” study investigators Christopher Kaufmann, PhD; Munaza Riaz, PharmD, MPhil; and Rakesh Bhattacharjee, MD, told this news organization.

“Additionally, physicians should consider monitoring the presence of other health conditions as contributing factors to the risk of CVD,” they said. Dr. Kaufmann and Dr. Riaz are with the University of Florida, Gainesville, Florida, and Dr. Bhattacharjee is with the University of California, San Diego.

They presented their research at SLEEP 2024: 38th Annual Meeting of the Associated Professional Sleep Societies.
 

Independent Risk Factor

The National Institute of Neurological Disorders and Stroke reports an estimated 125,000 to 200,000 people in the United States live with narcolepsy. The condition often coexists with other common health conditions including obstructive sleep apnea (OSA), diabetes, and other comorbidities, which can all contribute to the risk for CVD.

This raises doubt as to whether narcolepsy itself directly leads to CVD or if it is the result of these comorbid health conditions. Additionally, some medications used to treat narcolepsy carry their own cardiovascular risks.

Using the IBM MarketScan Commercial and Medicare supplemental databases, the researchers identified 34,562 adults with a diagnosis of narcolepsy and a propensity-matched comparison cohort of 100,405 adults without narcolepsy. The patients had a mean age of 40 years, and 62% were women.

Compared with adults without narcolepsy, those with the chronic sleep disorder that causes overwhelming daytime drowsiness had a 77% increased risk for any CVD (hazard ratio [HR], 1.77) and an 82% increased risk for MACE (HR, 1.82).

They also had an increased risk for stroke (HR, 2.04), heart failure or myocardial infarction (MI; HR, 1.64), and atrial fibrillation (HR, 1.58).

The results were similar in a separate analysis of the same population that also controlled for baseline use of stimulants, oxybates, and wake-promoting agents — medications commonly used to treat excessive daytime sleepiness associated with narcolepsy.

In this analysis, narcolepsy was associated with an 89% higher risk for CVD (HR, 1.89) and a 95% increased risk for MACE (HR, 1.95). The risk for any stroke (HR, 2.06), heart failure (HR, 1.90), atrial fibrillation (HR, 1.66), and MI (HR, 1.93) was also higher in those with narcolepsy.

“Our study found that even after considering the presence of health conditions like obstructive sleep apnea, diabetes, hypertension, hyperlipidemia, and even depression, as well as medication use, there still appears to be an independent relationship between narcolepsy and CVD,” the investigators said.

They cautioned that the mechanisms explaining the link between CVD and narcolepsy are unclear and warrant further study.

“Sleep fragmentation is a hallmark of narcolepsy, and it is speculated that this fragmentation, which may trigger disturbances in autonomic function, predisposes individuals to CVD. In rodent models, a possible link has been observed between hypocretin — a central neurotransmitter that is reduced or deficient in patients with narcolepsy — and atherosclerosis.

“However, it remains uncertain whether this is the primary mechanism related to CVD,” they commented.
 

Compelling Evidence for Higher CVD

Commenting on the findings for this news organization, Shaheen Lakhan, MD, a neurologist and researcher based in Miami, Florida, called for narcolepsy to be recognized as a significant contributor to higher CVD risk.

“Given the compelling evidence linking narcolepsy to a higher incidence of cardiovascular disease, it is crucial that narcolepsy be included in clinical guidelines and risk assessment tools alongside other known risk factors,” said Dr. Lakhan, who was not involved in this research.

“Physicians and health care providers should proactively address the increased cardiovascular risk associated with narcolepsy by incorporating preventive strategies and interventions into the management of patients with this condition,” Dr. Lakhan suggested.

Regular CVD screening, a healthier lifestyle, and targeted therapies could all decrease cardiac risk, Dr. Lakhan added.

“Ultimately, novel disease-modifying therapies for narcolepsy should target the core mechanisms driving the increased cardiovascular risk associated with this condition. By elucidating the specific biological pathways and developing targeted therapies that address the unique challenges faced by narcolepsy patients, we can effectively mitigate the risk,” Dr. Lakhan said.

The studies were funded by the Sleep Research Society Foundation. The authors and Dr. Lakhan had no relevant disclosures.

A version of this article appeared on Medscape.com.

Humans have used salt for centuries, to preserve or cure food before refrigeration was readily available, and even as currency in some cultures. Though modern food preservation efforts have decreased our reliance on salt, we still heavily incorporate it as a flavor enhancer. 

It’s only relatively recently that we’ve begun limiting salt in our diets, as research has linked high sodium intake with chronic, preventable conditions like hypertension, heart disease, and kidney disease.
 

How to Recommend Restriction in a Helpful Way 

The US Department of Agriculture’s Dietary Guidelines for Americans recommends intake of no more than 2300 mg of sodium daily for adults and children aged 14 years or older. This echoes similar recommendations for people at risk for heart disease, kidney disease, and hypertension. However, the sodium intake of the average American still sits at a whopping 3400 mg daily. 

High sodium intake is primarily the result of modern commercial food processing. Food prepared outside the home accounts for up to 70% of sodium intake in the United States, whereas only about 10% comes from salt that is added to food either during or after cooking. For this reason, I hesitate to recommend withholding salt as a primary focus when counseling on a low-sodium diet. 

To many people, certain foods just taste better with salt. Many of my patients in the southern United States simply will not eat foods like eggs and tomatoes if they cannot salt them. We can spend every moment of patient interaction time explaining why excess sodium is unhealthy, but the fact remains that humans prefer food that tastes good. This is why I try to avoid counseling a “no-added-salt” diet; instead, I recommend a low-sodium diet with a focus on fresh, whole foods and limiting salt to only a few food items. 

Patients should be counseled to slowly restrict their salt intake and be made aware that doing so may increase the time it takes for their sensitivity to the taste of less salty foods to return. But it is also important for them to know that it will return. The surest way to kill progress is for an unprepared patient to believe that their food will taste bland forever. A prepared patient understands that their food may taste different for a couple of weeks, but that the change will not last forever.
 

Types of Salt 

I have often worked with patients who insist that their sodium intake is acceptable because they are using sea salt instead of table salt. This is the result of exceptional marketing and misinformation. 

Specialty salts like sea salt and Himalayan pink salt contain about 560 mg and 590 mg of sodium, respectively, per quarter teaspoon. These products do have a slightly different mineral content, with sea salt typically having a negligible amount of calcium, magnesium, or potassium. The very small amount of these minerals offers no obvious health benefits compared with more affordable table salt. 

The sodium content of iodized table salt is comparable to these products, with about 590 mg of sodium per quarter teaspoon. Though its high sodium content will put some practitioners off, it is also an excellent source of iodine, at about 75 mg per serving. It has been estimated that upward of 35% of the US population has iodine deficiency, most commonly due to pregnancy, avoidance of dairy products, increasing rates of vegetarianism, intake of highly processed foods, and avoidance of added salt. For this reason, and its relative affordability, I find table salt to be far more appropriate for the average American than specialty salts.
 

Salt Substitutes 

Monosodium glutamate (MSG). MSG was previously at the center of public health concern owing to reports of “Chinese restaurant syndrome” that have since been debunked. I often recommend MSG to people trying to decrease sodium intake because the US Food and Drug Administration has designated it as GRAS (“generally recognized as safe”), and it has about one quarter of the sodium content of table salt at 125 mg per quarter teaspoon. Its crystalline structure makes it a lower-sodium salt substitute in savory applications like soups, stews, and gravies. 

Hot sauce. These sauces are generally composed of peppers, vinegar, salt, and sugar. There may be some variation and occasionally added ingredients depending upon the brand. However, I find most hot sauces to be a low-sodium seasoning option that works especially well on proteins like eggs, chicken, and pork. 

Potassium-based substitutes. Salt alternatives such as Nu-Salt and Morton Salt Substitute are sodium-free options with a significant amount of potassium, at 525 mg per quarter-teaspoon serving. These alternatives may not be ideal for patients with kidney problems, but they can be very helpful for those with potassium deficiency. 

Herb-based seasonings. Garlic and onion powder are both sodium-free seasonings that many of my patients have found help to increase palatability while decreasing salt use. Black pepper; lemon and lime juice; salt-free herb mixes like Mrs. Dash; and spices like cumin, paprika, dill, chili powder, and ginger are also sodium-free or low-sodium alternatives that can help to alleviate blandness for someone new to a low-sodium diet. I recommend them often and use them in my own cooking at home.

Plant-based diet. If the goal of care is to improve cardiovascular or kidney health, then I find that working with patients to increase intake of plant foods to be a helpful option. This way of eating encourages replacing highly processed foods that may be high in sodium and sugar with plants that tend to be higher in potassium and calcium. The Dietary Approaches to Stop Hypertension (DASH), Mediterranean, and other plant-based diets have been shown to increase cardiovascular and metabolic health by significantly decreasing serum lipids, blood pressure, and hemoglobin A1c and promoting weight loss. They have also been shown to increase the gut microbiome and promote increased cognitive function. 

I rarely encourage the use of added salt. However, research shows that putting down the salt shaker is probably not the most effective option to restrict sodium intake. For those who can cut back, these options can help keep food flavorful and patients compliant. 

Ms. Winfree is a renal dietitian in private practice in Mary Esther, Florida. She has disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com.

Humans have used salt for centuries, to preserve or cure food before refrigeration was readily available, and even as currency in some cultures. Though modern food preservation efforts have decreased our reliance on salt, we still heavily incorporate it as a flavor enhancer. 

It’s only relatively recently that we’ve begun limiting salt in our diets, as research has linked high sodium intake with chronic, preventable conditions like hypertension, heart disease, and kidney disease.
 

How to Recommend Restriction in a Helpful Way 

The US Department of Agriculture’s Dietary Guidelines for Americans recommends intake of no more than 2300 mg of sodium daily for adults and children aged 14 years or older. This echoes similar recommendations for people at risk for heart disease, kidney disease, and hypertension. However, the sodium intake of the average American still sits at a whopping 3400 mg daily. 

High sodium intake is primarily the result of modern commercial food processing. Food prepared outside the home accounts for up to 70% of sodium intake in the United States, whereas only about 10% comes from salt that is added to food either during or after cooking. For this reason, I hesitate to recommend withholding salt as a primary focus when counseling on a low-sodium diet. 

To many people, certain foods just taste better with salt. Many of my patients in the southern United States simply will not eat foods like eggs and tomatoes if they cannot salt them. We can spend every moment of patient interaction time explaining why excess sodium is unhealthy, but the fact remains that humans prefer food that tastes good. This is why I try to avoid counseling a “no-added-salt” diet; instead, I recommend a low-sodium diet with a focus on fresh, whole foods and limiting salt to only a few food items. 

Patients should be counseled to slowly restrict their salt intake and be made aware that doing so may increase the time it takes for their sensitivity to the taste of less salty foods to return. But it is also important for them to know that it will return. The surest way to kill progress is for an unprepared patient to believe that their food will taste bland forever. A prepared patient understands that their food may taste different for a couple of weeks, but that the change will not last forever.
 

Types of Salt 

I have often worked with patients who insist that their sodium intake is acceptable because they are using sea salt instead of table salt. This is the result of exceptional marketing and misinformation. 

Specialty salts like sea salt and Himalayan pink salt contain about 560 mg and 590 mg of sodium, respectively, per quarter teaspoon. These products do have a slightly different mineral content, with sea salt typically having a negligible amount of calcium, magnesium, or potassium. The very small amount of these minerals offers no obvious health benefits compared with more affordable table salt. 

The sodium content of iodized table salt is comparable to these products, with about 590 mg of sodium per quarter teaspoon. Though its high sodium content will put some practitioners off, it is also an excellent source of iodine, at about 75 mg per serving. It has been estimated that upward of 35% of the US population has iodine deficiency, most commonly due to pregnancy, avoidance of dairy products, increasing rates of vegetarianism, intake of highly processed foods, and avoidance of added salt. For this reason, and its relative affordability, I find table salt to be far more appropriate for the average American than specialty salts.
 

Salt Substitutes 

Monosodium glutamate (MSG). MSG was previously at the center of public health concern owing to reports of “Chinese restaurant syndrome” that have since been debunked. I often recommend MSG to people trying to decrease sodium intake because the US Food and Drug Administration has designated it as GRAS (“generally recognized as safe”), and it has about one quarter of the sodium content of table salt at 125 mg per quarter teaspoon. Its crystalline structure makes it a lower-sodium salt substitute in savory applications like soups, stews, and gravies. 

Hot sauce. These sauces are generally composed of peppers, vinegar, salt, and sugar. There may be some variation and occasionally added ingredients depending upon the brand. However, I find most hot sauces to be a low-sodium seasoning option that works especially well on proteins like eggs, chicken, and pork. 

Potassium-based substitutes. Salt alternatives such as Nu-Salt and Morton Salt Substitute are sodium-free options with a significant amount of potassium, at 525 mg per quarter-teaspoon serving. These alternatives may not be ideal for patients with kidney problems, but they can be very helpful for those with potassium deficiency. 

Herb-based seasonings. Garlic and onion powder are both sodium-free seasonings that many of my patients have found help to increase palatability while decreasing salt use. Black pepper; lemon and lime juice; salt-free herb mixes like Mrs. Dash; and spices like cumin, paprika, dill, chili powder, and ginger are also sodium-free or low-sodium alternatives that can help to alleviate blandness for someone new to a low-sodium diet. I recommend them often and use them in my own cooking at home.

Plant-based diet. If the goal of care is to improve cardiovascular or kidney health, then I find that working with patients to increase intake of plant foods to be a helpful option. This way of eating encourages replacing highly processed foods that may be high in sodium and sugar with plants that tend to be higher in potassium and calcium. The Dietary Approaches to Stop Hypertension (DASH), Mediterranean, and other plant-based diets have been shown to increase cardiovascular and metabolic health by significantly decreasing serum lipids, blood pressure, and hemoglobin A1c and promoting weight loss. They have also been shown to increase the gut microbiome and promote increased cognitive function. 

I rarely encourage the use of added salt. However, research shows that putting down the salt shaker is probably not the most effective option to restrict sodium intake. For those who can cut back, these options can help keep food flavorful and patients compliant. 

Ms. Winfree is a renal dietitian in private practice in Mary Esther, Florida. She has disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com.

Humans have used salt for centuries, to preserve or cure food before refrigeration was readily available, and even as currency in some cultures. Though modern food preservation efforts have decreased our reliance on salt, we still heavily incorporate it as a flavor enhancer. 

It’s only relatively recently that we’ve begun limiting salt in our diets, as research has linked high sodium intake with chronic, preventable conditions like hypertension, heart disease, and kidney disease.
 

How to Recommend Restriction in a Helpful Way 

The US Department of Agriculture’s Dietary Guidelines for Americans recommends intake of no more than 2300 mg of sodium daily for adults and children aged 14 years or older. This echoes similar recommendations for people at risk for heart disease, kidney disease, and hypertension. However, the sodium intake of the average American still sits at a whopping 3400 mg daily. 

High sodium intake is primarily the result of modern commercial food processing. Food prepared outside the home accounts for up to 70% of sodium intake in the United States, whereas only about 10% comes from salt that is added to food either during or after cooking. For this reason, I hesitate to recommend withholding salt as a primary focus when counseling on a low-sodium diet. 

To many people, certain foods just taste better with salt. Many of my patients in the southern United States simply will not eat foods like eggs and tomatoes if they cannot salt them. We can spend every moment of patient interaction time explaining why excess sodium is unhealthy, but the fact remains that humans prefer food that tastes good. This is why I try to avoid counseling a “no-added-salt” diet; instead, I recommend a low-sodium diet with a focus on fresh, whole foods and limiting salt to only a few food items. 

Patients should be counseled to slowly restrict their salt intake and be made aware that doing so may increase the time it takes for their sensitivity to the taste of less salty foods to return. But it is also important for them to know that it will return. The surest way to kill progress is for an unprepared patient to believe that their food will taste bland forever. A prepared patient understands that their food may taste different for a couple of weeks, but that the change will not last forever.
 

Types of Salt 

I have often worked with patients who insist that their sodium intake is acceptable because they are using sea salt instead of table salt. This is the result of exceptional marketing and misinformation. 

Specialty salts like sea salt and Himalayan pink salt contain about 560 mg and 590 mg of sodium, respectively, per quarter teaspoon. These products do have a slightly different mineral content, with sea salt typically having a negligible amount of calcium, magnesium, or potassium. The very small amount of these minerals offers no obvious health benefits compared with more affordable table salt. 

The sodium content of iodized table salt is comparable to these products, with about 590 mg of sodium per quarter teaspoon. Though its high sodium content will put some practitioners off, it is also an excellent source of iodine, at about 75 mg per serving. It has been estimated that upward of 35% of the US population has iodine deficiency, most commonly due to pregnancy, avoidance of dairy products, increasing rates of vegetarianism, intake of highly processed foods, and avoidance of added salt. For this reason, and its relative affordability, I find table salt to be far more appropriate for the average American than specialty salts.
 

Salt Substitutes 

Monosodium glutamate (MSG). MSG was previously at the center of public health concern owing to reports of “Chinese restaurant syndrome” that have since been debunked. I often recommend MSG to people trying to decrease sodium intake because the US Food and Drug Administration has designated it as GRAS (“generally recognized as safe”), and it has about one quarter of the sodium content of table salt at 125 mg per quarter teaspoon. Its crystalline structure makes it a lower-sodium salt substitute in savory applications like soups, stews, and gravies. 

Hot sauce. These sauces are generally composed of peppers, vinegar, salt, and sugar. There may be some variation and occasionally added ingredients depending upon the brand. However, I find most hot sauces to be a low-sodium seasoning option that works especially well on proteins like eggs, chicken, and pork. 

Potassium-based substitutes. Salt alternatives such as Nu-Salt and Morton Salt Substitute are sodium-free options with a significant amount of potassium, at 525 mg per quarter-teaspoon serving. These alternatives may not be ideal for patients with kidney problems, but they can be very helpful for those with potassium deficiency. 

Herb-based seasonings. Garlic and onion powder are both sodium-free seasonings that many of my patients have found help to increase palatability while decreasing salt use. Black pepper; lemon and lime juice; salt-free herb mixes like Mrs. Dash; and spices like cumin, paprika, dill, chili powder, and ginger are also sodium-free or low-sodium alternatives that can help to alleviate blandness for someone new to a low-sodium diet. I recommend them often and use them in my own cooking at home.

Plant-based diet. If the goal of care is to improve cardiovascular or kidney health, then I find that working with patients to increase intake of plant foods to be a helpful option. This way of eating encourages replacing highly processed foods that may be high in sodium and sugar with plants that tend to be higher in potassium and calcium. The Dietary Approaches to Stop Hypertension (DASH), Mediterranean, and other plant-based diets have been shown to increase cardiovascular and metabolic health by significantly decreasing serum lipids, blood pressure, and hemoglobin A1c and promoting weight loss. They have also been shown to increase the gut microbiome and promote increased cognitive function. 

I rarely encourage the use of added salt. However, research shows that putting down the salt shaker is probably not the most effective option to restrict sodium intake. For those who can cut back, these options can help keep food flavorful and patients compliant. 

Ms. Winfree is a renal dietitian in private practice in Mary Esther, Florida. She has disclosed no relevant financial relationships.

A version of this article appeared on Medscape.com.