Neurology Reviews

Parkinson’s disease (PD) and dementia with Lewy bodies are currently defined by clinical features, which can be heterogeneous and do not capture the presymptomatic phase of neurodegeneration.

Recent advances have enabled the detection of misfolded and aggregated alpha-synuclein protein (synucleinopathy) — a key pathologic feature of these diseases — allowing for earlier and more accurate diagnosis. This has led two international research groups to propose a major shift from a clinical to a biological definition of the disease.

Both groups emphasized the detection of alpha-synuclein through recently developed seed amplification assays as a key diagnostic and staging tool, although they differ in their approaches and criteria.
 

NSD-ISS

A team led by Tanya Simuni, MD, with Northwestern University, Chicago, proposed a biological definition that combines PD and dementia with Lewy bodies under the term neuronal alpha-synuclein disease (NSD).

NSD is defined by the presence during life of pathologic neuronal alpha-synuclein (S, the first biological anchor) in cerebrospinal fluid (CSF), regardless of the presence of any specific clinical syndrome. Individuals with pathologic neuronal alpha-synuclein aggregates are at a high risk for dopaminergic neuronal dysfunction (D, the second key biological anchor).

Dr. Simuni and colleagues also proposed the NSD integrated staging system (NSD-ISS) rooted in the S and D biological anchors coupled with the degree of functional impairment caused by clinical signs or symptoms.

Stages 0-1 occur without signs or symptoms and are defined by the presence of pathogenic variants in the SNCA gene (stage 0), S alone (stage 1A), or S and D (stage 1B).

The presence of clinical manifestations marks the transition to stage 2 and beyond, with stage 2 characterized by subtle signs or symptoms but without functional impairment. Stages 2B-6 require both S and D and stage-specific increases in functional impairment.

“An advantage of the NSD-ISS will be to reduce heterogeneity in clinical trials by requiring biological consistency within the study cohort rather than identifying study participants on the basis of clinical criteria for Parkinson’s disease and dementia with Lewy bodies,” Dr. Simuni and colleagues pointed out in a position paper describing the NSD-ISS published online earlier this year in The Lancet Neurology.

The NSD-ISS will “evolve to include the incorporation of data-driven definitions of stage-specific functional anchors and additional biomarkers as they emerge and are validated.”

For now, the NSD-ISS is intended for research use only and not in the clinic.
 

The SynNeurGe Research Diagnostic Criteria

Separately, a team led by Anthony Lang, MD, with the Krembil Brain Institute at Toronto Western Hospital, Toronto, Ontario, Canada, proposed the SynNeurGe biological classification of PD.

Described in a companion paper published online in The Lancet Neurology, their “S-N-G” classification emphasizes the important interactions between three biological factors that contribute to disease: The presence or absence of pathologic alpha-synuclein (S) in tissues or CSF, an evidence of underlying neurodegeneration (N) defined by neuroimaging procedures, and the documentation of pathogenic gene variants (G) that cause or strongly predispose to PD.

These three components link to a clinical component, defined either by a single high-specificity clinical feature or by multiple lower-specificity clinical features.

As with the NSD-ISS, the SynNeurGe model is intended for research purposes only and is not ready for immediate application in the clinic.

Both groups acknowledged the need for studies to test and validate the proposed classification systems.
 

Caveats, Cautionary Notes

Adopting a biological definition of PD would represent a shift as the field has prompted considerable discussion and healthy debate.

Commenting for this news organization, James Beck, PhD, chief scientific officer at the Parkinson’s Foundation, said the principle behind the proposed classifications is where “the field needs to go.”

“Right now, people with Parkinson’s take too long to get a confirmed diagnosis of their disease, and despite best efforts, clinicians can get it wrong, not diagnosing people or maybe misdiagnosing people,” Dr. Beck said. “Moving to a biological basis, where we have better certainty, is going to be really important.”

Beck noted that the NSD-ISS “goes all in on alpha-synuclein,” which does play a big role in PD, but added, “I don’t know if I want to declare a winner after the first heat. There are other biomarkers that are coming to fruition but still need validation, and alpha-synuclein may be just one of many to help determine whether someone has Parkinson’s disease or not.”

Un Kang, MD, director of translational research at the Fresco Institute for Parkinson’s & Movement Disorders at NYU Langone Health, New York City, told this news organization that alpha-synuclein has “very high diagnostic accuracy” but cautioned that the adoption of a biological definition for PD would not usurp a clinical diagnosis.

“We need both,” Dr. Kang said. “But knowing the underlying pathology is important for earlier diagnosis and testing of potential therapies to treat the molecular pathology. If a patient doesn’t have abnormal synuclein, you may be treating the wrong disease.”

The coauthors of recent JAMA Neurology perspective said the biological definitions are “exciting, but there is “wisdom” in tapping the brakes when attempting to establish a biological definition and classification system for PD.

“Although these two proposals represent significant steps forward, a sprint toward the finish line may not be wise,” wrote Njideka U. Okubadejo, MD, with University of Lagos, Nigeria; Joseph Jankovic, MD, with Baylor College of Medicine, Houston; and Michael S. Okun, MD, with University of Florida Health, Gainesville, Florida.

“A process that embraces inclusivity and weaves in evolving technological advancements will be important. Who benefits if implementation of a biologically based staging system for PD is hurried?” they continued.

The proposals rely heavily on alpha-synuclein assays, they noted, which currently require subjective interpretation and lack extensive validation. They also worry that the need for expensive and, in some regions, unattainable biological fluids (CSF) or imaging studies (dopamine transporter scan) may limit global access to both PD trials and future therapeutics.

They also worry about retiring the name Parkinson’s disease.

“Beyond the historical importance of the term Parkinson disease, any classification that proposes abandoning the two words in either clinical or research descriptions could have unintended global repercussions,” Dr. Okubadejo, Dr. Jankovic, and Dr. Okun cautioned.

Dr. Beck told this news organization he’s spoken to clinicians at meetings about this and “no one really likes the idea” of retiring the term Parkinson’s disease.

Frederick Ketchum, MD, and Nathaniel Chin, MD, with University of Wisconsin–Madison, worry about the “lived” experience of the asymptomatic patient after receiving a biological diagnosis.

“Biological diagnosis might enable effective prognostication and treatment in the future but will substantially change the experience of illness for patients now as new frameworks are slowly adopted and knowledge is gained,” they said in a correspondence in The Lancet Neurology.

“Understanding and addressing this lived experience remains a core task for health professionals and must be made central as we begin an era in which neurological diseases are redefined on a biological basis,” Dr. Ketchum and Dr. Chin advised.

A complete list of agencies that supported this work and author disclosures are available with the original articles. Dr. Beck and Dr. Kang had no relevant disclosures.

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

Parkinson’s disease (PD) and dementia with Lewy bodies are currently defined by clinical features, which can be heterogeneous and do not capture the presymptomatic phase of neurodegeneration.

Recent advances have enabled the detection of misfolded and aggregated alpha-synuclein protein (synucleinopathy) — a key pathologic feature of these diseases — allowing for earlier and more accurate diagnosis. This has led two international research groups to propose a major shift from a clinical to a biological definition of the disease.

Both groups emphasized the detection of alpha-synuclein through recently developed seed amplification assays as a key diagnostic and staging tool, although they differ in their approaches and criteria.
 

NSD-ISS

A team led by Tanya Simuni, MD, with Northwestern University, Chicago, proposed a biological definition that combines PD and dementia with Lewy bodies under the term neuronal alpha-synuclein disease (NSD).

NSD is defined by the presence during life of pathologic neuronal alpha-synuclein (S, the first biological anchor) in cerebrospinal fluid (CSF), regardless of the presence of any specific clinical syndrome. Individuals with pathologic neuronal alpha-synuclein aggregates are at a high risk for dopaminergic neuronal dysfunction (D, the second key biological anchor).

Dr. Simuni and colleagues also proposed the NSD integrated staging system (NSD-ISS) rooted in the S and D biological anchors coupled with the degree of functional impairment caused by clinical signs or symptoms.

Stages 0-1 occur without signs or symptoms and are defined by the presence of pathogenic variants in the SNCA gene (stage 0), S alone (stage 1A), or S and D (stage 1B).

The presence of clinical manifestations marks the transition to stage 2 and beyond, with stage 2 characterized by subtle signs or symptoms but without functional impairment. Stages 2B-6 require both S and D and stage-specific increases in functional impairment.

“An advantage of the NSD-ISS will be to reduce heterogeneity in clinical trials by requiring biological consistency within the study cohort rather than identifying study participants on the basis of clinical criteria for Parkinson’s disease and dementia with Lewy bodies,” Dr. Simuni and colleagues pointed out in a position paper describing the NSD-ISS published online earlier this year in The Lancet Neurology.

The NSD-ISS will “evolve to include the incorporation of data-driven definitions of stage-specific functional anchors and additional biomarkers as they emerge and are validated.”

For now, the NSD-ISS is intended for research use only and not in the clinic.
 

The SynNeurGe Research Diagnostic Criteria

Separately, a team led by Anthony Lang, MD, with the Krembil Brain Institute at Toronto Western Hospital, Toronto, Ontario, Canada, proposed the SynNeurGe biological classification of PD.

Described in a companion paper published online in The Lancet Neurology, their “S-N-G” classification emphasizes the important interactions between three biological factors that contribute to disease: The presence or absence of pathologic alpha-synuclein (S) in tissues or CSF, an evidence of underlying neurodegeneration (N) defined by neuroimaging procedures, and the documentation of pathogenic gene variants (G) that cause or strongly predispose to PD.

These three components link to a clinical component, defined either by a single high-specificity clinical feature or by multiple lower-specificity clinical features.

As with the NSD-ISS, the SynNeurGe model is intended for research purposes only and is not ready for immediate application in the clinic.

Both groups acknowledged the need for studies to test and validate the proposed classification systems.
 

Caveats, Cautionary Notes

Adopting a biological definition of PD would represent a shift as the field has prompted considerable discussion and healthy debate.

Commenting for this news organization, James Beck, PhD, chief scientific officer at the Parkinson’s Foundation, said the principle behind the proposed classifications is where “the field needs to go.”

“Right now, people with Parkinson’s take too long to get a confirmed diagnosis of their disease, and despite best efforts, clinicians can get it wrong, not diagnosing people or maybe misdiagnosing people,” Dr. Beck said. “Moving to a biological basis, where we have better certainty, is going to be really important.”

Beck noted that the NSD-ISS “goes all in on alpha-synuclein,” which does play a big role in PD, but added, “I don’t know if I want to declare a winner after the first heat. There are other biomarkers that are coming to fruition but still need validation, and alpha-synuclein may be just one of many to help determine whether someone has Parkinson’s disease or not.”

Un Kang, MD, director of translational research at the Fresco Institute for Parkinson’s & Movement Disorders at NYU Langone Health, New York City, told this news organization that alpha-synuclein has “very high diagnostic accuracy” but cautioned that the adoption of a biological definition for PD would not usurp a clinical diagnosis.

“We need both,” Dr. Kang said. “But knowing the underlying pathology is important for earlier diagnosis and testing of potential therapies to treat the molecular pathology. If a patient doesn’t have abnormal synuclein, you may be treating the wrong disease.”

The coauthors of recent JAMA Neurology perspective said the biological definitions are “exciting, but there is “wisdom” in tapping the brakes when attempting to establish a biological definition and classification system for PD.

“Although these two proposals represent significant steps forward, a sprint toward the finish line may not be wise,” wrote Njideka U. Okubadejo, MD, with University of Lagos, Nigeria; Joseph Jankovic, MD, with Baylor College of Medicine, Houston; and Michael S. Okun, MD, with University of Florida Health, Gainesville, Florida.

“A process that embraces inclusivity and weaves in evolving technological advancements will be important. Who benefits if implementation of a biologically based staging system for PD is hurried?” they continued.

The proposals rely heavily on alpha-synuclein assays, they noted, which currently require subjective interpretation and lack extensive validation. They also worry that the need for expensive and, in some regions, unattainable biological fluids (CSF) or imaging studies (dopamine transporter scan) may limit global access to both PD trials and future therapeutics.

They also worry about retiring the name Parkinson’s disease.

“Beyond the historical importance of the term Parkinson disease, any classification that proposes abandoning the two words in either clinical or research descriptions could have unintended global repercussions,” Dr. Okubadejo, Dr. Jankovic, and Dr. Okun cautioned.

Dr. Beck told this news organization he’s spoken to clinicians at meetings about this and “no one really likes the idea” of retiring the term Parkinson’s disease.

Frederick Ketchum, MD, and Nathaniel Chin, MD, with University of Wisconsin–Madison, worry about the “lived” experience of the asymptomatic patient after receiving a biological diagnosis.

“Biological diagnosis might enable effective prognostication and treatment in the future but will substantially change the experience of illness for patients now as new frameworks are slowly adopted and knowledge is gained,” they said in a correspondence in The Lancet Neurology.

“Understanding and addressing this lived experience remains a core task for health professionals and must be made central as we begin an era in which neurological diseases are redefined on a biological basis,” Dr. Ketchum and Dr. Chin advised.

A complete list of agencies that supported this work and author disclosures are available with the original articles. Dr. Beck and Dr. Kang had no relevant disclosures.

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

Parkinson’s disease (PD) and dementia with Lewy bodies are currently defined by clinical features, which can be heterogeneous and do not capture the presymptomatic phase of neurodegeneration.

Recent advances have enabled the detection of misfolded and aggregated alpha-synuclein protein (synucleinopathy) — a key pathologic feature of these diseases — allowing for earlier and more accurate diagnosis. This has led two international research groups to propose a major shift from a clinical to a biological definition of the disease.

Both groups emphasized the detection of alpha-synuclein through recently developed seed amplification assays as a key diagnostic and staging tool, although they differ in their approaches and criteria.
 

NSD-ISS

A team led by Tanya Simuni, MD, with Northwestern University, Chicago, proposed a biological definition that combines PD and dementia with Lewy bodies under the term neuronal alpha-synuclein disease (NSD).

NSD is defined by the presence during life of pathologic neuronal alpha-synuclein (S, the first biological anchor) in cerebrospinal fluid (CSF), regardless of the presence of any specific clinical syndrome. Individuals with pathologic neuronal alpha-synuclein aggregates are at a high risk for dopaminergic neuronal dysfunction (D, the second key biological anchor).

Dr. Simuni and colleagues also proposed the NSD integrated staging system (NSD-ISS) rooted in the S and D biological anchors coupled with the degree of functional impairment caused by clinical signs or symptoms.

Stages 0-1 occur without signs or symptoms and are defined by the presence of pathogenic variants in the SNCA gene (stage 0), S alone (stage 1A), or S and D (stage 1B).

The presence of clinical manifestations marks the transition to stage 2 and beyond, with stage 2 characterized by subtle signs or symptoms but without functional impairment. Stages 2B-6 require both S and D and stage-specific increases in functional impairment.

“An advantage of the NSD-ISS will be to reduce heterogeneity in clinical trials by requiring biological consistency within the study cohort rather than identifying study participants on the basis of clinical criteria for Parkinson’s disease and dementia with Lewy bodies,” Dr. Simuni and colleagues pointed out in a position paper describing the NSD-ISS published online earlier this year in The Lancet Neurology.

The NSD-ISS will “evolve to include the incorporation of data-driven definitions of stage-specific functional anchors and additional biomarkers as they emerge and are validated.”

For now, the NSD-ISS is intended for research use only and not in the clinic.
 

The SynNeurGe Research Diagnostic Criteria

Separately, a team led by Anthony Lang, MD, with the Krembil Brain Institute at Toronto Western Hospital, Toronto, Ontario, Canada, proposed the SynNeurGe biological classification of PD.

Described in a companion paper published online in The Lancet Neurology, their “S-N-G” classification emphasizes the important interactions between three biological factors that contribute to disease: The presence or absence of pathologic alpha-synuclein (S) in tissues or CSF, an evidence of underlying neurodegeneration (N) defined by neuroimaging procedures, and the documentation of pathogenic gene variants (G) that cause or strongly predispose to PD.

These three components link to a clinical component, defined either by a single high-specificity clinical feature or by multiple lower-specificity clinical features.

As with the NSD-ISS, the SynNeurGe model is intended for research purposes only and is not ready for immediate application in the clinic.

Both groups acknowledged the need for studies to test and validate the proposed classification systems.
 

Caveats, Cautionary Notes

Adopting a biological definition of PD would represent a shift as the field has prompted considerable discussion and healthy debate.

Commenting for this news organization, James Beck, PhD, chief scientific officer at the Parkinson’s Foundation, said the principle behind the proposed classifications is where “the field needs to go.”

“Right now, people with Parkinson’s take too long to get a confirmed diagnosis of their disease, and despite best efforts, clinicians can get it wrong, not diagnosing people or maybe misdiagnosing people,” Dr. Beck said. “Moving to a biological basis, where we have better certainty, is going to be really important.”

Beck noted that the NSD-ISS “goes all in on alpha-synuclein,” which does play a big role in PD, but added, “I don’t know if I want to declare a winner after the first heat. There are other biomarkers that are coming to fruition but still need validation, and alpha-synuclein may be just one of many to help determine whether someone has Parkinson’s disease or not.”

Un Kang, MD, director of translational research at the Fresco Institute for Parkinson’s & Movement Disorders at NYU Langone Health, New York City, told this news organization that alpha-synuclein has “very high diagnostic accuracy” but cautioned that the adoption of a biological definition for PD would not usurp a clinical diagnosis.

“We need both,” Dr. Kang said. “But knowing the underlying pathology is important for earlier diagnosis and testing of potential therapies to treat the molecular pathology. If a patient doesn’t have abnormal synuclein, you may be treating the wrong disease.”

The coauthors of recent JAMA Neurology perspective said the biological definitions are “exciting, but there is “wisdom” in tapping the brakes when attempting to establish a biological definition and classification system for PD.

“Although these two proposals represent significant steps forward, a sprint toward the finish line may not be wise,” wrote Njideka U. Okubadejo, MD, with University of Lagos, Nigeria; Joseph Jankovic, MD, with Baylor College of Medicine, Houston; and Michael S. Okun, MD, with University of Florida Health, Gainesville, Florida.

“A process that embraces inclusivity and weaves in evolving technological advancements will be important. Who benefits if implementation of a biologically based staging system for PD is hurried?” they continued.

The proposals rely heavily on alpha-synuclein assays, they noted, which currently require subjective interpretation and lack extensive validation. They also worry that the need for expensive and, in some regions, unattainable biological fluids (CSF) or imaging studies (dopamine transporter scan) may limit global access to both PD trials and future therapeutics.

They also worry about retiring the name Parkinson’s disease.

“Beyond the historical importance of the term Parkinson disease, any classification that proposes abandoning the two words in either clinical or research descriptions could have unintended global repercussions,” Dr. Okubadejo, Dr. Jankovic, and Dr. Okun cautioned.

Dr. Beck told this news organization he’s spoken to clinicians at meetings about this and “no one really likes the idea” of retiring the term Parkinson’s disease.

Frederick Ketchum, MD, and Nathaniel Chin, MD, with University of Wisconsin–Madison, worry about the “lived” experience of the asymptomatic patient after receiving a biological diagnosis.

“Biological diagnosis might enable effective prognostication and treatment in the future but will substantially change the experience of illness for patients now as new frameworks are slowly adopted and knowledge is gained,” they said in a correspondence in The Lancet Neurology.

“Understanding and addressing this lived experience remains a core task for health professionals and must be made central as we begin an era in which neurological diseases are redefined on a biological basis,” Dr. Ketchum and Dr. Chin advised.

A complete list of agencies that supported this work and author disclosures are available with the original articles. Dr. Beck and Dr. Kang had no relevant disclosures.

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

TOPLINE:

New-onset atrial fibrillation (AF) is associated with a substantially higher risk for all-cause dementia in patients with type 2 diabetes (T2D).

METHODOLOGY:

• Studies suggest a potential link between AF and dementia in the broader population, but evidence is scarce in people with diabetes, who are at increased risk for both conditions.
• This longitudinal observational study assessed the association between new-onset AF and dementia in 22,989 patients with T2D (median age at enrollment, 61.0 years; 62.3% men; 86.3% White individuals).
• New-onset AF was identified through hospital admission records using the International Classification of Diseases – 9th Revision (ICD-9) and ICD-10 codes, and dementia cases were identified using an algorithm developed by the UK Biobank.
• Time-varying Cox proportional hazard regression models were used to determine the association between incident dementia and new-onset AF.

TAKEAWAY:

• Over a median follow-up duration of about 12 years, 844 patients developed all-cause dementia, 342 were diagnosed with Alzheimer’s disease, and 246 had vascular dementia.
• Patients with incident AF had a higher risk of developing all-cause dementia (hazard ratio [HR], 2.15; 95% CI, 1.80-2.57), Alzheimer’s disease (HR, 1.44; 95% CI, 1.06-1.96), and vascular dementia (HR, 3.11; 95% CI, 2.32-4.17) than those without incident AF.
• The results are independent of common dementia risk factors, such as sociodemographic characteristics and lifestyle factors.
• The mean time intervals from the onset of AF to all-cause dementia, Alzheimer’s disease and vascular dementia were 2.95, 2.81, and 3.37 years, respectively.

IN PRACTICE:

“AF is a significant risk factor for dementia in patients with type 2 diabetes, suggesting the importance of timely and effective treatment of AF, such as early rhythm control strategies and anticoagulant use, in preventing dementia among this demographic,” the authors wrote.
 

SOURCE:

The study, led by Ying Zhou, PhD, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China, was published online in Diabetes, Obesity and Metabolism.

LIMITATIONS:

The study could not explore the link between different AF subtypes and dementia owing to its small sample size. The effects of AF treatment on the risk for dementia in patients with type 2 diabetes were not considered because of lack of information. The mostly White study population limits the generalizability of the findings to other races and ethnicities.

DISCLOSURES:

The study was supported by the National Social Science Fund of China. The authors declared no conflicts of interest.

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

TOPLINE:

New-onset atrial fibrillation (AF) is associated with a substantially higher risk for all-cause dementia in patients with type 2 diabetes (T2D).

METHODOLOGY:

• Studies suggest a potential link between AF and dementia in the broader population, but evidence is scarce in people with diabetes, who are at increased risk for both conditions.
• This longitudinal observational study assessed the association between new-onset AF and dementia in 22,989 patients with T2D (median age at enrollment, 61.0 years; 62.3% men; 86.3% White individuals).
• New-onset AF was identified through hospital admission records using the International Classification of Diseases – 9th Revision (ICD-9) and ICD-10 codes, and dementia cases were identified using an algorithm developed by the UK Biobank.
• Time-varying Cox proportional hazard regression models were used to determine the association between incident dementia and new-onset AF.

TAKEAWAY:

• Over a median follow-up duration of about 12 years, 844 patients developed all-cause dementia, 342 were diagnosed with Alzheimer’s disease, and 246 had vascular dementia.
• Patients with incident AF had a higher risk of developing all-cause dementia (hazard ratio [HR], 2.15; 95% CI, 1.80-2.57), Alzheimer’s disease (HR, 1.44; 95% CI, 1.06-1.96), and vascular dementia (HR, 3.11; 95% CI, 2.32-4.17) than those without incident AF.
• The results are independent of common dementia risk factors, such as sociodemographic characteristics and lifestyle factors.
• The mean time intervals from the onset of AF to all-cause dementia, Alzheimer’s disease and vascular dementia were 2.95, 2.81, and 3.37 years, respectively.

IN PRACTICE:

“AF is a significant risk factor for dementia in patients with type 2 diabetes, suggesting the importance of timely and effective treatment of AF, such as early rhythm control strategies and anticoagulant use, in preventing dementia among this demographic,” the authors wrote.
 

SOURCE:

The study, led by Ying Zhou, PhD, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China, was published online in Diabetes, Obesity and Metabolism.

LIMITATIONS:

The study could not explore the link between different AF subtypes and dementia owing to its small sample size. The effects of AF treatment on the risk for dementia in patients with type 2 diabetes were not considered because of lack of information. The mostly White study population limits the generalizability of the findings to other races and ethnicities.

DISCLOSURES:

The study was supported by the National Social Science Fund of China. The authors declared no conflicts of interest.

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

TOPLINE:

New-onset atrial fibrillation (AF) is associated with a substantially higher risk for all-cause dementia in patients with type 2 diabetes (T2D).

METHODOLOGY:

• Studies suggest a potential link between AF and dementia in the broader population, but evidence is scarce in people with diabetes, who are at increased risk for both conditions.
• This longitudinal observational study assessed the association between new-onset AF and dementia in 22,989 patients with T2D (median age at enrollment, 61.0 years; 62.3% men; 86.3% White individuals).
• New-onset AF was identified through hospital admission records using the International Classification of Diseases – 9th Revision (ICD-9) and ICD-10 codes, and dementia cases were identified using an algorithm developed by the UK Biobank.
• Time-varying Cox proportional hazard regression models were used to determine the association between incident dementia and new-onset AF.

TAKEAWAY:

• Over a median follow-up duration of about 12 years, 844 patients developed all-cause dementia, 342 were diagnosed with Alzheimer’s disease, and 246 had vascular dementia.
• Patients with incident AF had a higher risk of developing all-cause dementia (hazard ratio [HR], 2.15; 95% CI, 1.80-2.57), Alzheimer’s disease (HR, 1.44; 95% CI, 1.06-1.96), and vascular dementia (HR, 3.11; 95% CI, 2.32-4.17) than those without incident AF.
• The results are independent of common dementia risk factors, such as sociodemographic characteristics and lifestyle factors.
• The mean time intervals from the onset of AF to all-cause dementia, Alzheimer’s disease and vascular dementia were 2.95, 2.81, and 3.37 years, respectively.

IN PRACTICE:

“AF is a significant risk factor for dementia in patients with type 2 diabetes, suggesting the importance of timely and effective treatment of AF, such as early rhythm control strategies and anticoagulant use, in preventing dementia among this demographic,” the authors wrote.
 

SOURCE:

The study, led by Ying Zhou, PhD, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China, was published online in Diabetes, Obesity and Metabolism.

LIMITATIONS:

The study could not explore the link between different AF subtypes and dementia owing to its small sample size. The effects of AF treatment on the risk for dementia in patients with type 2 diabetes were not considered because of lack of information. The mostly White study population limits the generalizability of the findings to other races and ethnicities.

DISCLOSURES:

The study was supported by the National Social Science Fund of China. The authors declared no conflicts of interest.

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

Agitation is a neuropsychiatric symptom in patients with Alzheimer’s disease (AD), the most common form of dementia. The prevalence of this symptom is about 40%-65%, with the higher end of the range applying to patients who have moderate to severe dementia. Agitation often begins early in the course of the disease and is persistent, which contributes to increased healthcare costs and significantly increases both caregiver burden and patient distress. The DICE approach is a collaborative process for managing behavioral symptoms in dementia, wherein the caregiver describes the behaviors, the provider investigates the etiology, the provider and caregiver create a treatment plan, and the provider evaluates the outcome of the interventions. We use this widely adopted approach as the framework for discussing recent advances in the management of agitation.

Here are five things to know about managing agitation in AD.
 

1. There is a new operational definition for agitation in dementia.

Agitation in dementia is a syndrome that encompasses specific behaviors across all dementia types. The 2023 operational definition of agitation in dementia by the International Psychogeriatric Association (IPA) includes three domains: excessive motor activity (including pacing, rocking, restlessness, and performing repetitious mannerisms), verbal aggression (including using profanity, screaming, and shouting), and physical aggression (including interpersonal aggression and mishandling or destruction of property). These behaviors must be persistent or recurrent for at least 2 weeks or represent a dramatic change from the person’s baseline behavior, must be associated with excessive distress or disability beyond what is caused by the cognitive impairment itself, and result in significant impairment in at least one of the three specified functional domains. Behavioral symptoms in dementia frequently co-occur, which affects treatment and prognosis. For instance, the risk for stroke associated with antipsychotic treatments appears to be higher in dementia-related psychosis without agitation than in agitation alone or in psychosis with agitation. Therefore, the use of a rating scale such as the Neuropsychiatric Inventory–Questionnaire (NPI-Q), which takes 5 minutes or less to administer, is recommended to identify and track behavioral symptoms and caregiver distress.

2. The etiology of agitation in dementia may be multifactorial.

It is important in every case to identify all underlying etiologies so that presumed causal and/or exacerbating factors are not inadvertently missed. Agitation may be a means of communicating distress owing to unmet needs or a patient-environment mismatch (function-focused approach) or may be a direct consequence of the dementia itself (behavioral-symptom approach). These approaches are not mutually exclusive. A patient can present with agitation as a direct consequence of dementia and inadequately treated pain concurrently. 

The new IPA definition specifies several exclusion criteria for agitation in dementia, including underlying medical conditions, delirium, substance use, and suboptimal care conditions. It is especially crucial to accurately identify delirium because dementia is an independent risk factor for delirium, which in turn may accelerate the progression of cognitive and functional decline. Even subsyndromal delirium in older adults leads to a higher 3-year mortality rate that is comparable to that seen in delirium. Older adults with acute-onset agitation in the context of dementia should undergo a comprehensive assessment for delirium, as agitation may be the only indication of a serious underlying medical condition. 
 

3. Nonpharmacologic interventions should be used whenever possible. 

The wider adoption of nonpharmacologic interventions in clinical practice has been greatly limited by the heterogeneity in study protocols, including in selection of participants, in the types of dementias included, and in defining and applying the intervention strategies. Nevertheless, there is general consensus that individualized behavioral strategies that build on the patients’ interests and preserved abilities are more effective, at least in the short term. Patients best suited for these interventions are those with less cognitive decline, better communication skills, less impairment in activities of daily living, and higher responsiveness. A systematic review of systematic reviews found music therapy to be the most effective intervention for reducing agitation and aggression in dementia, along with behavioral management techniques when supervised by healthcare professionals. On the other hand, physical restraints are best avoided, as their use in hospitalized patients has been associated with longer stays, higher costs, lower odds of being discharged to home, and in long-term care patients with longer stays, with increased risk for medical complications and functional decline. 

4. Antidepressants are not all equally safe or efficacious in managing agitation.

In a network meta-analysis that looked at the effects of several antidepressants on agitation in dementia, citalopram had just under 95% probability of efficacy and was the only antidepressant that was significantly more efficacious than placebo. In the multicenter CitAD trial, citalopram was efficacious and well tolerated for the treatment of agitation in AD, but the mean dose of citalopram used, 30 mg/d, was higher than the maximum dose of 20 mg/d recommended by the US Food and Drug Administration (FDA) in those aged 60 years or above. The optimal candidates for citalopram were those under the age of 85 with mild to moderate AD and mild to moderate nonpsychotic agitation, and it took up to 9 weeks for it to be fully effective. Due to the risk for dose-dependent QTc prolongation with citalopram, a baseline ECG must be done, and a second ECG is recommended if a clinical decision is made to exceed the recommended maximum daily dose. In the CitAD trial, 66% of patients in the citalopram arm received cholinesterase inhibitors concurrently while 44% received memantine, so these symptomatic treatments for AD should not be stopped solely for initiating a citalopram trial. 

The antiagitation effect of citalopram may well be a class effect of all selective serotonin reuptake inhibitors (SSRIs), given that there is also evidence favoring the use of sertraline and escitalopram. The S-CitAD trial, the first large, randomized controlled study of escitalopram for the treatment of agitation in dementia, is expected to announce its top-line results sometime this year. However, not all antidepressant classes appear to be equally efficacious or safe. In the large, 12-week randomized placebo-controlled trial SYMBAD, mirtazapine was not only ineffective in treating nonpsychotic agitation in AD but was also associated with a higher mortality rate that just missed statistical significance. Trazodone is also often used for treating agitation, but there is insufficient evidence regarding efficacy and a high probability of adverse effects, even at low doses.
 

5. Antipsychotics may be effective drugs for treating severe dementia-related agitation.

The CATIE-AD study found that the small beneficial effects of antipsychotics for treating agitation and psychosis in AD were offset by their adverse effects and high discontinuation rates, and the FDA-imposed boxed warnings in 2005 and 2008 cautioned against the use of both first- and second-generation antipsychotics to manage dementia-related psychosis owing to an increased risk for death. Subsequently, the quest for safer and more effective alternatives culminated in the FDA approval of brexpiprazole in 2023 for the treatment of agitation in AD, but the black box warning was left in place. Three randomized controlled trials found brexpiprazole to be relatively safe, with statistically significant improvement in agitation. It was especially efficacious for severe agitation, but there is controversy about whether such improvement is clinically meaningful and whether brexpiprazole is truly superior to other antipsychotics for treating dementia-related agitation. As in the previously mentioned citalopram studies, most patients in the brexpiprazole studies received the drug as an add-on to memantine and/or a cholinesterase inhibitor, and it was proven effective over a period of up to 12 weeks across the three trials. Regarding other antipsychotics, aripiprazole and risperidone have been shown to be effective in treating agitation in patients with mixed dementia, but risperidone has also been associated with the highest risk for strokes (about 80% probability). Unfortunately, an unintended consequence of the boxed warnings on antipsychotics has been an increase in off-label substitution of psychotropic drugs with unproven efficacy and a questionable safety profile, such as valproic acid preparations, that have been linked to an increased short-term risk for accelerated brain volume loss and rapid cognitive decline, as well as a higher risk for mortality.

Lisa M. Wise, assistant professor, Psychiatry, at Oregon Health & Science University, and staff psychiatrist, Department of Psychiatry, Portland VA Medical Center, Portland, Oregon, and Vimal M. Aga, adjunct assistant professor, Department of Neurology, Oregon Health & Science University, and geriatric psychiatrist, Layton Aging and Alzheimer’s Disease Center, Portland, Oregon, have disclosed no relevant financial relationships.

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

Agitation is a neuropsychiatric symptom in patients with Alzheimer’s disease (AD), the most common form of dementia. The prevalence of this symptom is about 40%-65%, with the higher end of the range applying to patients who have moderate to severe dementia. Agitation often begins early in the course of the disease and is persistent, which contributes to increased healthcare costs and significantly increases both caregiver burden and patient distress. The DICE approach is a collaborative process for managing behavioral symptoms in dementia, wherein the caregiver describes the behaviors, the provider investigates the etiology, the provider and caregiver create a treatment plan, and the provider evaluates the outcome of the interventions. We use this widely adopted approach as the framework for discussing recent advances in the management of agitation.

Here are five things to know about managing agitation in AD.
 

1. There is a new operational definition for agitation in dementia.

Agitation in dementia is a syndrome that encompasses specific behaviors across all dementia types. The 2023 operational definition of agitation in dementia by the International Psychogeriatric Association (IPA) includes three domains: excessive motor activity (including pacing, rocking, restlessness, and performing repetitious mannerisms), verbal aggression (including using profanity, screaming, and shouting), and physical aggression (including interpersonal aggression and mishandling or destruction of property). These behaviors must be persistent or recurrent for at least 2 weeks or represent a dramatic change from the person’s baseline behavior, must be associated with excessive distress or disability beyond what is caused by the cognitive impairment itself, and result in significant impairment in at least one of the three specified functional domains. Behavioral symptoms in dementia frequently co-occur, which affects treatment and prognosis. For instance, the risk for stroke associated with antipsychotic treatments appears to be higher in dementia-related psychosis without agitation than in agitation alone or in psychosis with agitation. Therefore, the use of a rating scale such as the Neuropsychiatric Inventory–Questionnaire (NPI-Q), which takes 5 minutes or less to administer, is recommended to identify and track behavioral symptoms and caregiver distress.

2. The etiology of agitation in dementia may be multifactorial.

It is important in every case to identify all underlying etiologies so that presumed causal and/or exacerbating factors are not inadvertently missed. Agitation may be a means of communicating distress owing to unmet needs or a patient-environment mismatch (function-focused approach) or may be a direct consequence of the dementia itself (behavioral-symptom approach). These approaches are not mutually exclusive. A patient can present with agitation as a direct consequence of dementia and inadequately treated pain concurrently. 

The new IPA definition specifies several exclusion criteria for agitation in dementia, including underlying medical conditions, delirium, substance use, and suboptimal care conditions. It is especially crucial to accurately identify delirium because dementia is an independent risk factor for delirium, which in turn may accelerate the progression of cognitive and functional decline. Even subsyndromal delirium in older adults leads to a higher 3-year mortality rate that is comparable to that seen in delirium. Older adults with acute-onset agitation in the context of dementia should undergo a comprehensive assessment for delirium, as agitation may be the only indication of a serious underlying medical condition. 
 

3. Nonpharmacologic interventions should be used whenever possible. 

The wider adoption of nonpharmacologic interventions in clinical practice has been greatly limited by the heterogeneity in study protocols, including in selection of participants, in the types of dementias included, and in defining and applying the intervention strategies. Nevertheless, there is general consensus that individualized behavioral strategies that build on the patients’ interests and preserved abilities are more effective, at least in the short term. Patients best suited for these interventions are those with less cognitive decline, better communication skills, less impairment in activities of daily living, and higher responsiveness. A systematic review of systematic reviews found music therapy to be the most effective intervention for reducing agitation and aggression in dementia, along with behavioral management techniques when supervised by healthcare professionals. On the other hand, physical restraints are best avoided, as their use in hospitalized patients has been associated with longer stays, higher costs, lower odds of being discharged to home, and in long-term care patients with longer stays, with increased risk for medical complications and functional decline. 

4. Antidepressants are not all equally safe or efficacious in managing agitation.

In a network meta-analysis that looked at the effects of several antidepressants on agitation in dementia, citalopram had just under 95% probability of efficacy and was the only antidepressant that was significantly more efficacious than placebo. In the multicenter CitAD trial, citalopram was efficacious and well tolerated for the treatment of agitation in AD, but the mean dose of citalopram used, 30 mg/d, was higher than the maximum dose of 20 mg/d recommended by the US Food and Drug Administration (FDA) in those aged 60 years or above. The optimal candidates for citalopram were those under the age of 85 with mild to moderate AD and mild to moderate nonpsychotic agitation, and it took up to 9 weeks for it to be fully effective. Due to the risk for dose-dependent QTc prolongation with citalopram, a baseline ECG must be done, and a second ECG is recommended if a clinical decision is made to exceed the recommended maximum daily dose. In the CitAD trial, 66% of patients in the citalopram arm received cholinesterase inhibitors concurrently while 44% received memantine, so these symptomatic treatments for AD should not be stopped solely for initiating a citalopram trial. 

The antiagitation effect of citalopram may well be a class effect of all selective serotonin reuptake inhibitors (SSRIs), given that there is also evidence favoring the use of sertraline and escitalopram. The S-CitAD trial, the first large, randomized controlled study of escitalopram for the treatment of agitation in dementia, is expected to announce its top-line results sometime this year. However, not all antidepressant classes appear to be equally efficacious or safe. In the large, 12-week randomized placebo-controlled trial SYMBAD, mirtazapine was not only ineffective in treating nonpsychotic agitation in AD but was also associated with a higher mortality rate that just missed statistical significance. Trazodone is also often used for treating agitation, but there is insufficient evidence regarding efficacy and a high probability of adverse effects, even at low doses.
 

5. Antipsychotics may be effective drugs for treating severe dementia-related agitation.

The CATIE-AD study found that the small beneficial effects of antipsychotics for treating agitation and psychosis in AD were offset by their adverse effects and high discontinuation rates, and the FDA-imposed boxed warnings in 2005 and 2008 cautioned against the use of both first- and second-generation antipsychotics to manage dementia-related psychosis owing to an increased risk for death. Subsequently, the quest for safer and more effective alternatives culminated in the FDA approval of brexpiprazole in 2023 for the treatment of agitation in AD, but the black box warning was left in place. Three randomized controlled trials found brexpiprazole to be relatively safe, with statistically significant improvement in agitation. It was especially efficacious for severe agitation, but there is controversy about whether such improvement is clinically meaningful and whether brexpiprazole is truly superior to other antipsychotics for treating dementia-related agitation. As in the previously mentioned citalopram studies, most patients in the brexpiprazole studies received the drug as an add-on to memantine and/or a cholinesterase inhibitor, and it was proven effective over a period of up to 12 weeks across the three trials. Regarding other antipsychotics, aripiprazole and risperidone have been shown to be effective in treating agitation in patients with mixed dementia, but risperidone has also been associated with the highest risk for strokes (about 80% probability). Unfortunately, an unintended consequence of the boxed warnings on antipsychotics has been an increase in off-label substitution of psychotropic drugs with unproven efficacy and a questionable safety profile, such as valproic acid preparations, that have been linked to an increased short-term risk for accelerated brain volume loss and rapid cognitive decline, as well as a higher risk for mortality.

Lisa M. Wise, assistant professor, Psychiatry, at Oregon Health & Science University, and staff psychiatrist, Department of Psychiatry, Portland VA Medical Center, Portland, Oregon, and Vimal M. Aga, adjunct assistant professor, Department of Neurology, Oregon Health & Science University, and geriatric psychiatrist, Layton Aging and Alzheimer’s Disease Center, Portland, Oregon, have disclosed no relevant financial relationships.

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

Agitation is a neuropsychiatric symptom in patients with Alzheimer’s disease (AD), the most common form of dementia. The prevalence of this symptom is about 40%-65%, with the higher end of the range applying to patients who have moderate to severe dementia. Agitation often begins early in the course of the disease and is persistent, which contributes to increased healthcare costs and significantly increases both caregiver burden and patient distress. The DICE approach is a collaborative process for managing behavioral symptoms in dementia, wherein the caregiver describes the behaviors, the provider investigates the etiology, the provider and caregiver create a treatment plan, and the provider evaluates the outcome of the interventions. We use this widely adopted approach as the framework for discussing recent advances in the management of agitation.

Here are five things to know about managing agitation in AD.
 

1. There is a new operational definition for agitation in dementia.

Agitation in dementia is a syndrome that encompasses specific behaviors across all dementia types. The 2023 operational definition of agitation in dementia by the International Psychogeriatric Association (IPA) includes three domains: excessive motor activity (including pacing, rocking, restlessness, and performing repetitious mannerisms), verbal aggression (including using profanity, screaming, and shouting), and physical aggression (including interpersonal aggression and mishandling or destruction of property). These behaviors must be persistent or recurrent for at least 2 weeks or represent a dramatic change from the person’s baseline behavior, must be associated with excessive distress or disability beyond what is caused by the cognitive impairment itself, and result in significant impairment in at least one of the three specified functional domains. Behavioral symptoms in dementia frequently co-occur, which affects treatment and prognosis. For instance, the risk for stroke associated with antipsychotic treatments appears to be higher in dementia-related psychosis without agitation than in agitation alone or in psychosis with agitation. Therefore, the use of a rating scale such as the Neuropsychiatric Inventory–Questionnaire (NPI-Q), which takes 5 minutes or less to administer, is recommended to identify and track behavioral symptoms and caregiver distress.

2. The etiology of agitation in dementia may be multifactorial.

It is important in every case to identify all underlying etiologies so that presumed causal and/or exacerbating factors are not inadvertently missed. Agitation may be a means of communicating distress owing to unmet needs or a patient-environment mismatch (function-focused approach) or may be a direct consequence of the dementia itself (behavioral-symptom approach). These approaches are not mutually exclusive. A patient can present with agitation as a direct consequence of dementia and inadequately treated pain concurrently. 

The new IPA definition specifies several exclusion criteria for agitation in dementia, including underlying medical conditions, delirium, substance use, and suboptimal care conditions. It is especially crucial to accurately identify delirium because dementia is an independent risk factor for delirium, which in turn may accelerate the progression of cognitive and functional decline. Even subsyndromal delirium in older adults leads to a higher 3-year mortality rate that is comparable to that seen in delirium. Older adults with acute-onset agitation in the context of dementia should undergo a comprehensive assessment for delirium, as agitation may be the only indication of a serious underlying medical condition. 
 

3. Nonpharmacologic interventions should be used whenever possible. 

The wider adoption of nonpharmacologic interventions in clinical practice has been greatly limited by the heterogeneity in study protocols, including in selection of participants, in the types of dementias included, and in defining and applying the intervention strategies. Nevertheless, there is general consensus that individualized behavioral strategies that build on the patients’ interests and preserved abilities are more effective, at least in the short term. Patients best suited for these interventions are those with less cognitive decline, better communication skills, less impairment in activities of daily living, and higher responsiveness. A systematic review of systematic reviews found music therapy to be the most effective intervention for reducing agitation and aggression in dementia, along with behavioral management techniques when supervised by healthcare professionals. On the other hand, physical restraints are best avoided, as their use in hospitalized patients has been associated with longer stays, higher costs, lower odds of being discharged to home, and in long-term care patients with longer stays, with increased risk for medical complications and functional decline. 

4. Antidepressants are not all equally safe or efficacious in managing agitation.

In a network meta-analysis that looked at the effects of several antidepressants on agitation in dementia, citalopram had just under 95% probability of efficacy and was the only antidepressant that was significantly more efficacious than placebo. In the multicenter CitAD trial, citalopram was efficacious and well tolerated for the treatment of agitation in AD, but the mean dose of citalopram used, 30 mg/d, was higher than the maximum dose of 20 mg/d recommended by the US Food and Drug Administration (FDA) in those aged 60 years or above. The optimal candidates for citalopram were those under the age of 85 with mild to moderate AD and mild to moderate nonpsychotic agitation, and it took up to 9 weeks for it to be fully effective. Due to the risk for dose-dependent QTc prolongation with citalopram, a baseline ECG must be done, and a second ECG is recommended if a clinical decision is made to exceed the recommended maximum daily dose. In the CitAD trial, 66% of patients in the citalopram arm received cholinesterase inhibitors concurrently while 44% received memantine, so these symptomatic treatments for AD should not be stopped solely for initiating a citalopram trial. 

The antiagitation effect of citalopram may well be a class effect of all selective serotonin reuptake inhibitors (SSRIs), given that there is also evidence favoring the use of sertraline and escitalopram. The S-CitAD trial, the first large, randomized controlled study of escitalopram for the treatment of agitation in dementia, is expected to announce its top-line results sometime this year. However, not all antidepressant classes appear to be equally efficacious or safe. In the large, 12-week randomized placebo-controlled trial SYMBAD, mirtazapine was not only ineffective in treating nonpsychotic agitation in AD but was also associated with a higher mortality rate that just missed statistical significance. Trazodone is also often used for treating agitation, but there is insufficient evidence regarding efficacy and a high probability of adverse effects, even at low doses.
 

5. Antipsychotics may be effective drugs for treating severe dementia-related agitation.

The CATIE-AD study found that the small beneficial effects of antipsychotics for treating agitation and psychosis in AD were offset by their adverse effects and high discontinuation rates, and the FDA-imposed boxed warnings in 2005 and 2008 cautioned against the use of both first- and second-generation antipsychotics to manage dementia-related psychosis owing to an increased risk for death. Subsequently, the quest for safer and more effective alternatives culminated in the FDA approval of brexpiprazole in 2023 for the treatment of agitation in AD, but the black box warning was left in place. Three randomized controlled trials found brexpiprazole to be relatively safe, with statistically significant improvement in agitation. It was especially efficacious for severe agitation, but there is controversy about whether such improvement is clinically meaningful and whether brexpiprazole is truly superior to other antipsychotics for treating dementia-related agitation. As in the previously mentioned citalopram studies, most patients in the brexpiprazole studies received the drug as an add-on to memantine and/or a cholinesterase inhibitor, and it was proven effective over a period of up to 12 weeks across the three trials. Regarding other antipsychotics, aripiprazole and risperidone have been shown to be effective in treating agitation in patients with mixed dementia, but risperidone has also been associated with the highest risk for strokes (about 80% probability). Unfortunately, an unintended consequence of the boxed warnings on antipsychotics has been an increase in off-label substitution of psychotropic drugs with unproven efficacy and a questionable safety profile, such as valproic acid preparations, that have been linked to an increased short-term risk for accelerated brain volume loss and rapid cognitive decline, as well as a higher risk for mortality.

Lisa M. Wise, assistant professor, Psychiatry, at Oregon Health & Science University, and staff psychiatrist, Department of Psychiatry, Portland VA Medical Center, Portland, Oregon, and Vimal M. Aga, adjunct assistant professor, Department of Neurology, Oregon Health & Science University, and geriatric psychiatrist, Layton Aging and Alzheimer’s Disease Center, Portland, Oregon, have disclosed no relevant financial relationships.

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

Bacterial and nonbacterial components of the gut microbiome and their function can accurately differentiate children with autism spectrum disorder (ASD) from neurotypical children, new research shows. 

The findings could form the basis for development of a noninvasive diagnostic test for ASD and also provide novel therapeutic targets, wrote investigators, led by Siew C. Ng, MBBS, PhD, with the Microbiota I-Center (MagIC), the Chinese University of Hong Kong.

Their study was published online in Nature Microbiology. 
 

Beyond Bacteria

The gut microbiome has been shown to play a central role in modulating the gut-brain axis, potentially influencing the development of ASD. 

However, most studies in ASD have focused on the bacterial component of the microbiome. Whether nonbacterial microorganisms (such as gut archaea, fungi, and viruses) or function of the gut microbiome are altered in ASD remains unclear. 

To investigate, the researchers performed metagenomic sequencing on fecal samples from 1627 boys and girls aged 1-13 years with and without ASD from five cohorts in China. 

After controlling for diet, medication, and comorbidity, they identified 14 archaea, 51 bacteria, 7 fungi, 18 viruses, 27 microbial genes, and 12 metabolic pathways that were altered in children with ASD. 

Machine-learning models using single-kingdom panels (archaea, bacteria, fungi, viruses) achieved area under the curve (AUC) values ranging from 0.68 to 0.87 in differentiating children with ASD from neurotypical control children. 

A model based on a panel of 31 multikingdom and functional markers achieved “high predictive value” for ASD, achieving an AUC of 0.91, with comparable performance among boys and girls. 

“The reproducible performance of the models across ages, sexes, and cohorts highlights their potential as promising diagnostic tools for ASD,” the investigators wrote. 

They also noted that the accuracy of the model was largely driven by the biosynthesis pathways of ubiquinol-7 and thiamine diphosphate, which were less abundant in children with ASD, and may serve as therapeutic targets. 
 

‘Exciting’ Possibilities 

“This study broadens our understanding by including fungi, archaea, and viruses, where previous studies have largely focused on the role of gut bacteria in autism,” Bhismadev Chakrabarti, PhD, research director of the Centre for Autism at the University of Reading, United Kingdom, said in a statement from the nonprofit UK Science Media Centre. 

“The results are broadly in line with previous studies that show reduced microbial diversity in autistic individuals. It also examines one of the largest samples seen in a study like this, which further strengthens the results,” Dr. Chakrabarti added. 

He said this research may provide “new ways of detecting autism, if microbial markers turn out to strengthen the ability of genetic and behavioral tests to detect autism. A future platform that can combine genetic, microbial, and simple behavioral assessments could help address the detection gap.

“One limitation of this data is that it cannot assess any causal role for the microbiota in the development of autism,” Dr. Chakrabarti noted. 

This study was supported by InnoHK, the Government of Hong Kong, Special Administrative Region of the People’s Republic of China, The D. H. Chen Foundation, and the New Cornerstone Science Foundation through the New Cornerstone Investigator Program. Dr. Ng has served as an advisory board member for Pfizer, Ferring, Janssen, and AbbVie; has received honoraria as a speaker for Ferring, Tillotts, Menarini, Janssen, AbbVie, and Takeda; is a scientific cofounder and shareholder of GenieBiome; receives patent royalties through her affiliated institutions; and is named as a co-inventor of patent applications that cover the therapeutic and diagnostic use of microbiome. Dr. Chakrabarti has no relevant conflicts of interest.
 

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

Bacterial and nonbacterial components of the gut microbiome and their function can accurately differentiate children with autism spectrum disorder (ASD) from neurotypical children, new research shows. 

The findings could form the basis for development of a noninvasive diagnostic test for ASD and also provide novel therapeutic targets, wrote investigators, led by Siew C. Ng, MBBS, PhD, with the Microbiota I-Center (MagIC), the Chinese University of Hong Kong.

Their study was published online in Nature Microbiology. 
 

Beyond Bacteria

The gut microbiome has been shown to play a central role in modulating the gut-brain axis, potentially influencing the development of ASD. 

However, most studies in ASD have focused on the bacterial component of the microbiome. Whether nonbacterial microorganisms (such as gut archaea, fungi, and viruses) or function of the gut microbiome are altered in ASD remains unclear. 

To investigate, the researchers performed metagenomic sequencing on fecal samples from 1627 boys and girls aged 1-13 years with and without ASD from five cohorts in China. 

After controlling for diet, medication, and comorbidity, they identified 14 archaea, 51 bacteria, 7 fungi, 18 viruses, 27 microbial genes, and 12 metabolic pathways that were altered in children with ASD. 

Machine-learning models using single-kingdom panels (archaea, bacteria, fungi, viruses) achieved area under the curve (AUC) values ranging from 0.68 to 0.87 in differentiating children with ASD from neurotypical control children. 

A model based on a panel of 31 multikingdom and functional markers achieved “high predictive value” for ASD, achieving an AUC of 0.91, with comparable performance among boys and girls. 

“The reproducible performance of the models across ages, sexes, and cohorts highlights their potential as promising diagnostic tools for ASD,” the investigators wrote. 

They also noted that the accuracy of the model was largely driven by the biosynthesis pathways of ubiquinol-7 and thiamine diphosphate, which were less abundant in children with ASD, and may serve as therapeutic targets. 
 

‘Exciting’ Possibilities 

“This study broadens our understanding by including fungi, archaea, and viruses, where previous studies have largely focused on the role of gut bacteria in autism,” Bhismadev Chakrabarti, PhD, research director of the Centre for Autism at the University of Reading, United Kingdom, said in a statement from the nonprofit UK Science Media Centre. 

“The results are broadly in line with previous studies that show reduced microbial diversity in autistic individuals. It also examines one of the largest samples seen in a study like this, which further strengthens the results,” Dr. Chakrabarti added. 

He said this research may provide “new ways of detecting autism, if microbial markers turn out to strengthen the ability of genetic and behavioral tests to detect autism. A future platform that can combine genetic, microbial, and simple behavioral assessments could help address the detection gap.

“One limitation of this data is that it cannot assess any causal role for the microbiota in the development of autism,” Dr. Chakrabarti noted. 

This study was supported by InnoHK, the Government of Hong Kong, Special Administrative Region of the People’s Republic of China, The D. H. Chen Foundation, and the New Cornerstone Science Foundation through the New Cornerstone Investigator Program. Dr. Ng has served as an advisory board member for Pfizer, Ferring, Janssen, and AbbVie; has received honoraria as a speaker for Ferring, Tillotts, Menarini, Janssen, AbbVie, and Takeda; is a scientific cofounder and shareholder of GenieBiome; receives patent royalties through her affiliated institutions; and is named as a co-inventor of patent applications that cover the therapeutic and diagnostic use of microbiome. Dr. Chakrabarti has no relevant conflicts of interest.
 

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

Bacterial and nonbacterial components of the gut microbiome and their function can accurately differentiate children with autism spectrum disorder (ASD) from neurotypical children, new research shows. 

The findings could form the basis for development of a noninvasive diagnostic test for ASD and also provide novel therapeutic targets, wrote investigators, led by Siew C. Ng, MBBS, PhD, with the Microbiota I-Center (MagIC), the Chinese University of Hong Kong.

Their study was published online in Nature Microbiology. 
 

Beyond Bacteria

The gut microbiome has been shown to play a central role in modulating the gut-brain axis, potentially influencing the development of ASD. 

However, most studies in ASD have focused on the bacterial component of the microbiome. Whether nonbacterial microorganisms (such as gut archaea, fungi, and viruses) or function of the gut microbiome are altered in ASD remains unclear. 

To investigate, the researchers performed metagenomic sequencing on fecal samples from 1627 boys and girls aged 1-13 years with and without ASD from five cohorts in China. 

After controlling for diet, medication, and comorbidity, they identified 14 archaea, 51 bacteria, 7 fungi, 18 viruses, 27 microbial genes, and 12 metabolic pathways that were altered in children with ASD. 

Machine-learning models using single-kingdom panels (archaea, bacteria, fungi, viruses) achieved area under the curve (AUC) values ranging from 0.68 to 0.87 in differentiating children with ASD from neurotypical control children. 

A model based on a panel of 31 multikingdom and functional markers achieved “high predictive value” for ASD, achieving an AUC of 0.91, with comparable performance among boys and girls. 

“The reproducible performance of the models across ages, sexes, and cohorts highlights their potential as promising diagnostic tools for ASD,” the investigators wrote. 

They also noted that the accuracy of the model was largely driven by the biosynthesis pathways of ubiquinol-7 and thiamine diphosphate, which were less abundant in children with ASD, and may serve as therapeutic targets. 
 

‘Exciting’ Possibilities 

“This study broadens our understanding by including fungi, archaea, and viruses, where previous studies have largely focused on the role of gut bacteria in autism,” Bhismadev Chakrabarti, PhD, research director of the Centre for Autism at the University of Reading, United Kingdom, said in a statement from the nonprofit UK Science Media Centre. 

“The results are broadly in line with previous studies that show reduced microbial diversity in autistic individuals. It also examines one of the largest samples seen in a study like this, which further strengthens the results,” Dr. Chakrabarti added. 

He said this research may provide “new ways of detecting autism, if microbial markers turn out to strengthen the ability of genetic and behavioral tests to detect autism. A future platform that can combine genetic, microbial, and simple behavioral assessments could help address the detection gap.

“One limitation of this data is that it cannot assess any causal role for the microbiota in the development of autism,” Dr. Chakrabarti noted. 

This study was supported by InnoHK, the Government of Hong Kong, Special Administrative Region of the People’s Republic of China, The D. H. Chen Foundation, and the New Cornerstone Science Foundation through the New Cornerstone Investigator Program. Dr. Ng has served as an advisory board member for Pfizer, Ferring, Janssen, and AbbVie; has received honoraria as a speaker for Ferring, Tillotts, Menarini, Janssen, AbbVie, and Takeda; is a scientific cofounder and shareholder of GenieBiome; receives patent royalties through her affiliated institutions; and is named as a co-inventor of patent applications that cover the therapeutic and diagnostic use of microbiome. Dr. Chakrabarti has no relevant conflicts of interest.
 

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

TOPLINE:

Combat exposure is strongly associated with chronic pain in active-duty servicewomen and female civilian dependents of military personnel on active duty; a lower socioeconomic status and mental health conditions further increased the likelihood of chronic pain.

METHODOLOGY:

• Researchers analyzed claims data from the Military Health System to identify chronic pain diagnoses among active-duty servicewomen and civilian dependents of individuals on active duty.
• A total of 3,473,401 individuals (median age, 29 years) were included in the study, with 644,478 active-duty servicewomen and 2,828,923 civilian dependents.
• The study compared the incidence of chronic pain during 2006-2013, a period of heightened deployment intensity, with 2014-2020, a period of reduced deployment intensity.
• The primary outcome was the diagnosis of chronic pain.

TAKEAWAY:

• Active-duty servicewomen in the years 2006-2013 had a 53% increase in the odds of reporting chronic pain compared with those in the period between 2014 and 2020 (odds ratio [OR], 1.53; 95% CI, 1.48-1.58).
• Civilian dependents in the years 2006-2013 had a 96% increase in the odds of chronic pain compared with those in the later interval (OR, 1.96; 95% CI, 1.93-1.99).
• In 2006-2013, junior enlisted active-duty servicewomen had nearly a twofold increase in the odds of chronic pain (OR, 1.95; 95% CI, 1.83-2.09), while junior enlisted dependents had more than a threefold increase in the odds of chronic pain (OR, 3.05; 95% CI, 2.87-3.25) compared with senior officers.
• Comorbid mental conditions also were associated with an increased odds of reporting chronic pain (OR, 1.67; 95% CI, 1.65-1.69).

IN PRACTICE:

“The potential for higher rates of chronic pain in women veterans has been theorized to result from differences in support structures, family conflict, coping strategies, stress regulation, and exposure to military sexual trauma,” the authors wrote. “Our results suggest that these contributing factors may carry over to the women dependents of combat veterans in addition, indicating a line of research that requires urgent further exploration.”

SOURCE:

The study was led by Andrew J. Schoenfeld, MD, MSc, of the Center for Surgery and Public Health, Department of Orthopaedic Surgery at Brigham and Women’s Hospital and Harvard Medical School, in Boston. It was published online on July 5, 2024, in JAMA Network Open.

LIMITATIONS:

This study relied on claims-based data, which may have issues with coding accuracy and limited clinical granularity. The population size reduced over time owing to military downsizing, which could impact the findings. The prevalence of chronic pain in the population was likely underestimated because individuals who did not report symptoms or were diagnosed after separation from service were not identified.

DISCLOSURES:

This study was funded by the US Department of Defense. The lead author reported receiving grants and personal fees, serving as the editor-in-chief for Spine, acting as a consultant, and having other ties with various sources outside the submitted 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:

Combat exposure is strongly associated with chronic pain in active-duty servicewomen and female civilian dependents of military personnel on active duty; a lower socioeconomic status and mental health conditions further increased the likelihood of chronic pain.

METHODOLOGY:

• Researchers analyzed claims data from the Military Health System to identify chronic pain diagnoses among active-duty servicewomen and civilian dependents of individuals on active duty.
• A total of 3,473,401 individuals (median age, 29 years) were included in the study, with 644,478 active-duty servicewomen and 2,828,923 civilian dependents.
• The study compared the incidence of chronic pain during 2006-2013, a period of heightened deployment intensity, with 2014-2020, a period of reduced deployment intensity.
• The primary outcome was the diagnosis of chronic pain.

TAKEAWAY:

• Active-duty servicewomen in the years 2006-2013 had a 53% increase in the odds of reporting chronic pain compared with those in the period between 2014 and 2020 (odds ratio [OR], 1.53; 95% CI, 1.48-1.58).
• Civilian dependents in the years 2006-2013 had a 96% increase in the odds of chronic pain compared with those in the later interval (OR, 1.96; 95% CI, 1.93-1.99).
• In 2006-2013, junior enlisted active-duty servicewomen had nearly a twofold increase in the odds of chronic pain (OR, 1.95; 95% CI, 1.83-2.09), while junior enlisted dependents had more than a threefold increase in the odds of chronic pain (OR, 3.05; 95% CI, 2.87-3.25) compared with senior officers.
• Comorbid mental conditions also were associated with an increased odds of reporting chronic pain (OR, 1.67; 95% CI, 1.65-1.69).

IN PRACTICE:

“The potential for higher rates of chronic pain in women veterans has been theorized to result from differences in support structures, family conflict, coping strategies, stress regulation, and exposure to military sexual trauma,” the authors wrote. “Our results suggest that these contributing factors may carry over to the women dependents of combat veterans in addition, indicating a line of research that requires urgent further exploration.”

SOURCE:

The study was led by Andrew J. Schoenfeld, MD, MSc, of the Center for Surgery and Public Health, Department of Orthopaedic Surgery at Brigham and Women’s Hospital and Harvard Medical School, in Boston. It was published online on July 5, 2024, in JAMA Network Open.

LIMITATIONS:

This study relied on claims-based data, which may have issues with coding accuracy and limited clinical granularity. The population size reduced over time owing to military downsizing, which could impact the findings. The prevalence of chronic pain in the population was likely underestimated because individuals who did not report symptoms or were diagnosed after separation from service were not identified.

DISCLOSURES:

This study was funded by the US Department of Defense. The lead author reported receiving grants and personal fees, serving as the editor-in-chief for Spine, acting as a consultant, and having other ties with various sources outside the submitted 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:

Combat exposure is strongly associated with chronic pain in active-duty servicewomen and female civilian dependents of military personnel on active duty; a lower socioeconomic status and mental health conditions further increased the likelihood of chronic pain.

METHODOLOGY:

• Researchers analyzed claims data from the Military Health System to identify chronic pain diagnoses among active-duty servicewomen and civilian dependents of individuals on active duty.
• A total of 3,473,401 individuals (median age, 29 years) were included in the study, with 644,478 active-duty servicewomen and 2,828,923 civilian dependents.
• The study compared the incidence of chronic pain during 2006-2013, a period of heightened deployment intensity, with 2014-2020, a period of reduced deployment intensity.
• The primary outcome was the diagnosis of chronic pain.

TAKEAWAY:

• Active-duty servicewomen in the years 2006-2013 had a 53% increase in the odds of reporting chronic pain compared with those in the period between 2014 and 2020 (odds ratio [OR], 1.53; 95% CI, 1.48-1.58).
• Civilian dependents in the years 2006-2013 had a 96% increase in the odds of chronic pain compared with those in the later interval (OR, 1.96; 95% CI, 1.93-1.99).
• In 2006-2013, junior enlisted active-duty servicewomen had nearly a twofold increase in the odds of chronic pain (OR, 1.95; 95% CI, 1.83-2.09), while junior enlisted dependents had more than a threefold increase in the odds of chronic pain (OR, 3.05; 95% CI, 2.87-3.25) compared with senior officers.
• Comorbid mental conditions also were associated with an increased odds of reporting chronic pain (OR, 1.67; 95% CI, 1.65-1.69).

IN PRACTICE:

“The potential for higher rates of chronic pain in women veterans has been theorized to result from differences in support structures, family conflict, coping strategies, stress regulation, and exposure to military sexual trauma,” the authors wrote. “Our results suggest that these contributing factors may carry over to the women dependents of combat veterans in addition, indicating a line of research that requires urgent further exploration.”

SOURCE:

The study was led by Andrew J. Schoenfeld, MD, MSc, of the Center for Surgery and Public Health, Department of Orthopaedic Surgery at Brigham and Women’s Hospital and Harvard Medical School, in Boston. It was published online on July 5, 2024, in JAMA Network Open.

LIMITATIONS:

This study relied on claims-based data, which may have issues with coding accuracy and limited clinical granularity. The population size reduced over time owing to military downsizing, which could impact the findings. The prevalence of chronic pain in the population was likely underestimated because individuals who did not report symptoms or were diagnosed after separation from service were not identified.

DISCLOSURES:

This study was funded by the US Department of Defense. The lead author reported receiving grants and personal fees, serving as the editor-in-chief for Spine, acting as a consultant, and having other ties with various sources outside the submitted 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.

More than 90% of internet users are active on social media, which had 4.76 billion users worldwide in January 2023. The digital revolution has reshaped the news landscape and changed how users interact with information. Social media has fostered an active relationship with the media, including the ability to interact directly with the content presented. It also has augmented media’s ability to reach a large audience with tight deadlines.

These developments suggest that social media can be a useful tool in everyday medical practice for professionals and patients. But social media also can spread misinformation, as happened during the COVID-19 pandemic.

This characteristic is the focus of the latest research by Fabiana Zollo, a computer science professor at Ca’ Foscari University of Venice, Italy, and coordinator of the Data Science for Society laboratory. The research was published in The BMJ. Ms. Zollo’s research group aims to assess the effect of social media on misinformation and consequent behaviors related to health. “The study results focus primarily on two topics, the COVID-19 pandemic and vaccinations, but can also be applied to other health-related behaviors such as smoking and diet,” Ms. Zollo told Univadis Italy.

Social media has become an important tool for public health organizations to inform and educate citizens. Institutions can use it to monitor choices and understand which topics are being discussed most at a given time, thus comprehending how the topics evolve and take shape in public discourse. “This could lead to the emergence of people’s perceptions, allowing us to understand, among other things, what the population’s needs might be, including informational needs,” said Ms. Zollo.
 

Tenuous Causal Link

While social media offers public health organizations the opportunity to inform and engage the public, it also raises concerns about misinformation and the difficulty of measuring its effect on health behavior. Although some studies have observed correlations between exposure to misinformation on social media and levels of adherence to vaccination campaigns, establishing a causal link is complex. As the authors emphasize, “despite the importance of the effect of social media and misinformation on people’s behavior and the broad hypotheses within public and political debates, the current state of the art cannot provide definitive conclusions on a clear causal association between social media and health behaviors.” Establishing a clear causal link between information obtained from social media and offline behavior is challenging due to methodologic limitations and the complexity of connections between online and offline behaviors. Studies often rely on self-reported data, which may not accurately reflect real behaviors, and struggle to isolate the effect of social media from other external influences. Moreover, many studies primarily focus on Western countries, limiting the generalizability of the results to other cultural and geographical conditions.

Another issue highlighted by Ms. Zollo and colleagues is the lack of complete and representative data. Studies often lack detailed information about participants, such as demographic or geolocation data, and rely on limited samples. This lack makes it difficult to assess the effect of misinformation on different segments of the population and in different geographic areas.

“The main methodologic difficulty concerns behavior, which is difficult to measure because it would require tracking a person’s actions over time and having a shared methodology to do so. We need to understand whether online stated intentions do or do not translate into actual behaviors,” said Ms. Zollo. Therefore, despite the recognized importance of the effect of social media and misinformation on people’s general behavior and the broad hypotheses expressed within public and political debates, the current state of the art cannot provide definitive conclusions on a causal association between social media and health behaviors.
 

Institutions’ Role

Social media is a fertile ground for the formation of echo chambers (where users find themselves dialoguing with like-minded people, forming a distorted impression of the real prevalence of that opinion) and for reinforcing polarized positions around certain topics. “We know that on certain topics, especially those related to health, there is a lot of misinformation circulating precisely because it is easy to leverage factors such as fear and beliefs, even the difficulties in understanding the technical aspects of a message,” said Ms. Zollo. Moreover, institutions have not always provided timely information during the pandemic. “Often, when there is a gap in response to a specific informational need, people turn elsewhere, where those questions find answers. And even if the response is not of high quality, it sometimes confirms the idea that the user had already created in their mind.”

The article published in The BMJ aims primarily to provide information and evaluation insights to institutions rather than professionals or healthcare workers. “We would like to spark the interest of institutions and ministries that can analyze this type of data and integrate it into their monitoring system. Social monitoring (the observation of what happens on social media) is a practice that the World Health Organization is also evaluating and trying to integrate with more traditional tools, such as questionnaires. The aim is to understand as well as possible what a population thinks about a particular health measure, such as a vaccine: Through data obtained from social monitoring, a more realistic and comprehensive view of the problem could be achieved,” said Ms. Zollo.
 

A Doctor’s Role

And this is where the doctor comes in: All the information thus obtained allows for identifying the needs that the population expresses and that “could push a patient to turn elsewhere, toward sources that provide answers even if of dubious quality or extremely oversimplified.” The doctor can enter this landscape by trying to understand, even with the data provided by institutions, what needs the patients are trying to fill and what drives them to seek elsewhere and to look for a reference community that offers the relevant confirmations.

From the doctor’s perspective, therefore, it can be useful to understand how these dynamics arise and evolve because they could help improve interactions with patients. At the institutional level, social monitoring would be an excellent tool for providing services to doctors who, in turn, offer a service to patients. If it were possible to identify areas where a disinformation narrative is developing from the outset, both the doctor and the institutions would benefit.
 

Misinformation vs Disinformation

The rapid spread of false or misleading information on social media can undermine trust in healthcare institutions and negatively influence health-related behaviors. Ms. Zollo and colleagues, in fact, speak of misinformation in their discussion, not disinformation. “In English, a distinction is made between misinformation and disinformation, a distinction that we are also adopting in Italian. When we talk about misinformation, we mean information that is generally false, inaccurate, or misleading but has not been created with the intention to harm, an intention that is present in disinformation,” said Ms. Zollo.

The distinction is often not easy to define even at the operational level, but in her studies, Ms. Zollo is mainly interested in understanding how the end user interacts with content, not the purposes for which that content was created. “This allows us to focus on users and the relationships that are created on various social platforms, thus bypassing the author of that information and focusing on how misinformation arises and evolves so that it can be effectively combated before it translates into action (ie, into incorrect health choices),” said Ms. Zollo.
 

This story was translated from Univadis Italy, which is part of the Medscape Professional Network, 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.

More than 90% of internet users are active on social media, which had 4.76 billion users worldwide in January 2023. The digital revolution has reshaped the news landscape and changed how users interact with information. Social media has fostered an active relationship with the media, including the ability to interact directly with the content presented. It also has augmented media’s ability to reach a large audience with tight deadlines.

These developments suggest that social media can be a useful tool in everyday medical practice for professionals and patients. But social media also can spread misinformation, as happened during the COVID-19 pandemic.

This characteristic is the focus of the latest research by Fabiana Zollo, a computer science professor at Ca’ Foscari University of Venice, Italy, and coordinator of the Data Science for Society laboratory. The research was published in The BMJ. Ms. Zollo’s research group aims to assess the effect of social media on misinformation and consequent behaviors related to health. “The study results focus primarily on two topics, the COVID-19 pandemic and vaccinations, but can also be applied to other health-related behaviors such as smoking and diet,” Ms. Zollo told Univadis Italy.

Social media has become an important tool for public health organizations to inform and educate citizens. Institutions can use it to monitor choices and understand which topics are being discussed most at a given time, thus comprehending how the topics evolve and take shape in public discourse. “This could lead to the emergence of people’s perceptions, allowing us to understand, among other things, what the population’s needs might be, including informational needs,” said Ms. Zollo.
 

Tenuous Causal Link

While social media offers public health organizations the opportunity to inform and engage the public, it also raises concerns about misinformation and the difficulty of measuring its effect on health behavior. Although some studies have observed correlations between exposure to misinformation on social media and levels of adherence to vaccination campaigns, establishing a causal link is complex. As the authors emphasize, “despite the importance of the effect of social media and misinformation on people’s behavior and the broad hypotheses within public and political debates, the current state of the art cannot provide definitive conclusions on a clear causal association between social media and health behaviors.” Establishing a clear causal link between information obtained from social media and offline behavior is challenging due to methodologic limitations and the complexity of connections between online and offline behaviors. Studies often rely on self-reported data, which may not accurately reflect real behaviors, and struggle to isolate the effect of social media from other external influences. Moreover, many studies primarily focus on Western countries, limiting the generalizability of the results to other cultural and geographical conditions.

Another issue highlighted by Ms. Zollo and colleagues is the lack of complete and representative data. Studies often lack detailed information about participants, such as demographic or geolocation data, and rely on limited samples. This lack makes it difficult to assess the effect of misinformation on different segments of the population and in different geographic areas.

“The main methodologic difficulty concerns behavior, which is difficult to measure because it would require tracking a person’s actions over time and having a shared methodology to do so. We need to understand whether online stated intentions do or do not translate into actual behaviors,” said Ms. Zollo. Therefore, despite the recognized importance of the effect of social media and misinformation on people’s general behavior and the broad hypotheses expressed within public and political debates, the current state of the art cannot provide definitive conclusions on a causal association between social media and health behaviors.
 

Institutions’ Role

Social media is a fertile ground for the formation of echo chambers (where users find themselves dialoguing with like-minded people, forming a distorted impression of the real prevalence of that opinion) and for reinforcing polarized positions around certain topics. “We know that on certain topics, especially those related to health, there is a lot of misinformation circulating precisely because it is easy to leverage factors such as fear and beliefs, even the difficulties in understanding the technical aspects of a message,” said Ms. Zollo. Moreover, institutions have not always provided timely information during the pandemic. “Often, when there is a gap in response to a specific informational need, people turn elsewhere, where those questions find answers. And even if the response is not of high quality, it sometimes confirms the idea that the user had already created in their mind.”

The article published in The BMJ aims primarily to provide information and evaluation insights to institutions rather than professionals or healthcare workers. “We would like to spark the interest of institutions and ministries that can analyze this type of data and integrate it into their monitoring system. Social monitoring (the observation of what happens on social media) is a practice that the World Health Organization is also evaluating and trying to integrate with more traditional tools, such as questionnaires. The aim is to understand as well as possible what a population thinks about a particular health measure, such as a vaccine: Through data obtained from social monitoring, a more realistic and comprehensive view of the problem could be achieved,” said Ms. Zollo.
 

A Doctor’s Role

And this is where the doctor comes in: All the information thus obtained allows for identifying the needs that the population expresses and that “could push a patient to turn elsewhere, toward sources that provide answers even if of dubious quality or extremely oversimplified.” The doctor can enter this landscape by trying to understand, even with the data provided by institutions, what needs the patients are trying to fill and what drives them to seek elsewhere and to look for a reference community that offers the relevant confirmations.

From the doctor’s perspective, therefore, it can be useful to understand how these dynamics arise and evolve because they could help improve interactions with patients. At the institutional level, social monitoring would be an excellent tool for providing services to doctors who, in turn, offer a service to patients. If it were possible to identify areas where a disinformation narrative is developing from the outset, both the doctor and the institutions would benefit.
 

Misinformation vs Disinformation

The rapid spread of false or misleading information on social media can undermine trust in healthcare institutions and negatively influence health-related behaviors. Ms. Zollo and colleagues, in fact, speak of misinformation in their discussion, not disinformation. “In English, a distinction is made between misinformation and disinformation, a distinction that we are also adopting in Italian. When we talk about misinformation, we mean information that is generally false, inaccurate, or misleading but has not been created with the intention to harm, an intention that is present in disinformation,” said Ms. Zollo.

The distinction is often not easy to define even at the operational level, but in her studies, Ms. Zollo is mainly interested in understanding how the end user interacts with content, not the purposes for which that content was created. “This allows us to focus on users and the relationships that are created on various social platforms, thus bypassing the author of that information and focusing on how misinformation arises and evolves so that it can be effectively combated before it translates into action (ie, into incorrect health choices),” said Ms. Zollo.
 

This story was translated from Univadis Italy, which is part of the Medscape Professional Network, 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.

More than 90% of internet users are active on social media, which had 4.76 billion users worldwide in January 2023. The digital revolution has reshaped the news landscape and changed how users interact with information. Social media has fostered an active relationship with the media, including the ability to interact directly with the content presented. It also has augmented media’s ability to reach a large audience with tight deadlines.

These developments suggest that social media can be a useful tool in everyday medical practice for professionals and patients. But social media also can spread misinformation, as happened during the COVID-19 pandemic.

This characteristic is the focus of the latest research by Fabiana Zollo, a computer science professor at Ca’ Foscari University of Venice, Italy, and coordinator of the Data Science for Society laboratory. The research was published in The BMJ. Ms. Zollo’s research group aims to assess the effect of social media on misinformation and consequent behaviors related to health. “The study results focus primarily on two topics, the COVID-19 pandemic and vaccinations, but can also be applied to other health-related behaviors such as smoking and diet,” Ms. Zollo told Univadis Italy.

Social media has become an important tool for public health organizations to inform and educate citizens. Institutions can use it to monitor choices and understand which topics are being discussed most at a given time, thus comprehending how the topics evolve and take shape in public discourse. “This could lead to the emergence of people’s perceptions, allowing us to understand, among other things, what the population’s needs might be, including informational needs,” said Ms. Zollo.
 

Tenuous Causal Link

While social media offers public health organizations the opportunity to inform and engage the public, it also raises concerns about misinformation and the difficulty of measuring its effect on health behavior. Although some studies have observed correlations between exposure to misinformation on social media and levels of adherence to vaccination campaigns, establishing a causal link is complex. As the authors emphasize, “despite the importance of the effect of social media and misinformation on people’s behavior and the broad hypotheses within public and political debates, the current state of the art cannot provide definitive conclusions on a clear causal association between social media and health behaviors.” Establishing a clear causal link between information obtained from social media and offline behavior is challenging due to methodologic limitations and the complexity of connections between online and offline behaviors. Studies often rely on self-reported data, which may not accurately reflect real behaviors, and struggle to isolate the effect of social media from other external influences. Moreover, many studies primarily focus on Western countries, limiting the generalizability of the results to other cultural and geographical conditions.

Another issue highlighted by Ms. Zollo and colleagues is the lack of complete and representative data. Studies often lack detailed information about participants, such as demographic or geolocation data, and rely on limited samples. This lack makes it difficult to assess the effect of misinformation on different segments of the population and in different geographic areas.

“The main methodologic difficulty concerns behavior, which is difficult to measure because it would require tracking a person’s actions over time and having a shared methodology to do so. We need to understand whether online stated intentions do or do not translate into actual behaviors,” said Ms. Zollo. Therefore, despite the recognized importance of the effect of social media and misinformation on people’s general behavior and the broad hypotheses expressed within public and political debates, the current state of the art cannot provide definitive conclusions on a causal association between social media and health behaviors.
 

Institutions’ Role

Social media is a fertile ground for the formation of echo chambers (where users find themselves dialoguing with like-minded people, forming a distorted impression of the real prevalence of that opinion) and for reinforcing polarized positions around certain topics. “We know that on certain topics, especially those related to health, there is a lot of misinformation circulating precisely because it is easy to leverage factors such as fear and beliefs, even the difficulties in understanding the technical aspects of a message,” said Ms. Zollo. Moreover, institutions have not always provided timely information during the pandemic. “Often, when there is a gap in response to a specific informational need, people turn elsewhere, where those questions find answers. And even if the response is not of high quality, it sometimes confirms the idea that the user had already created in their mind.”

The article published in The BMJ aims primarily to provide information and evaluation insights to institutions rather than professionals or healthcare workers. “We would like to spark the interest of institutions and ministries that can analyze this type of data and integrate it into their monitoring system. Social monitoring (the observation of what happens on social media) is a practice that the World Health Organization is also evaluating and trying to integrate with more traditional tools, such as questionnaires. The aim is to understand as well as possible what a population thinks about a particular health measure, such as a vaccine: Through data obtained from social monitoring, a more realistic and comprehensive view of the problem could be achieved,” said Ms. Zollo.
 

A Doctor’s Role

And this is where the doctor comes in: All the information thus obtained allows for identifying the needs that the population expresses and that “could push a patient to turn elsewhere, toward sources that provide answers even if of dubious quality or extremely oversimplified.” The doctor can enter this landscape by trying to understand, even with the data provided by institutions, what needs the patients are trying to fill and what drives them to seek elsewhere and to look for a reference community that offers the relevant confirmations.

From the doctor’s perspective, therefore, it can be useful to understand how these dynamics arise and evolve because they could help improve interactions with patients. At the institutional level, social monitoring would be an excellent tool for providing services to doctors who, in turn, offer a service to patients. If it were possible to identify areas where a disinformation narrative is developing from the outset, both the doctor and the institutions would benefit.
 

Misinformation vs Disinformation

The rapid spread of false or misleading information on social media can undermine trust in healthcare institutions and negatively influence health-related behaviors. Ms. Zollo and colleagues, in fact, speak of misinformation in their discussion, not disinformation. “In English, a distinction is made between misinformation and disinformation, a distinction that we are also adopting in Italian. When we talk about misinformation, we mean information that is generally false, inaccurate, or misleading but has not been created with the intention to harm, an intention that is present in disinformation,” said Ms. Zollo.

The distinction is often not easy to define even at the operational level, but in her studies, Ms. Zollo is mainly interested in understanding how the end user interacts with content, not the purposes for which that content was created. “This allows us to focus on users and the relationships that are created on various social platforms, thus bypassing the author of that information and focusing on how misinformation arises and evolves so that it can be effectively combated before it translates into action (ie, into incorrect health choices),” said Ms. Zollo.
 

This story was translated from Univadis Italy, which is part of the Medscape Professional Network, 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.

Patients with treatment-refractory cancers who did not meet eligibility criteria for a pan-cancer clinical trial but received waivers allowing them to participate had similar outcomes to patients who participated without waivers, a new analysis revealed.

The study, published online in Clinical Cancer Research, highlighted the potential benefits of broadening eligibility criteria for clinical trials.

“It is well known that results in an ‘ideal’ population do not always translate to the real-world population,” senior author Hans Gelderblom, MD, chair of the Department of Medical Oncology at the Leiden University Medical Center, Leiden, the Netherlands, said in a press release. “Eligibility criteria are often too strict, and educated exemptions by experienced investigators can help individual patients, especially in a last-resort trial.”

Although experts have expressed interest in improving trial inclusivity, it’s unclear how doing so might impact treatment safety and efficacy.

In the Drug Rediscovery Protocol (DRUP), Dr. Gelderblom and colleagues examined the impact of broadening trial eligibility on patient outcomes. DRUP is an ongoing Dutch national, multicenter, pan-cancer, nonrandomized clinical trial in which patients are treated off-label with approved molecularly targeted or immunotherapies.

In the trial, 1019 patients with treatment-refractory disease were matched to one of the available study drugs based on their tumor molecular profile and enrolled in parallel cohorts. Cohorts were defined by tumor type, molecular profile, and study drug.

Among these patients, 82 patients — 8% of the cohort — were granted waivers to participate. Most waivers (45%) were granted as exceptions to general- or drug-related eligibility criteria, often because of out-of-range lab results. Other categories included treatment and testing exceptions, as well as out-of-window testing. 

The researchers then compared safety and efficacy outcomes between the 82 participants granted waivers and the 937 who did not receive waivers. 

Overall, Dr. Gelderblom’s team found that the rate of serious adverse events was similar between patients who received a waiver and those who did not: 39% vs 41%, respectively.

A relationship between waivers and serious adverse events was deemed “unlikely” for 86% of patients and “possible” for 14%. In two cases concerning a direct relationship, for instance, patients who received waivers for decreased hemoglobin levels developed anemia.

The rate of clinical benefit — defined as an objective response or stable disease for at least 16 weeks — was similar between the groups. Overall, 40% of patients who received a waiver (33 of 82) had a clinical benefit vs 33% of patients without a waiver (P = .43). Median overall survival for patients that received a waiver was also similar — 11 months in the waiver group and 8 months in the nonwaiver group (hazard ratio, 0.87; P = .33).

“Safety and clinical benefit were preserved in patients for whom a waiver was granted,” the authors concluded.

The study had several limitations. The diversity of cancer types, treatments, and reasons for protocol exemptions precluded subgroup analyses. In addition, because the decision to grant waivers depended in large part on the likelihood of clinical benefit, “it is possible that patients who received waivers were positively selected for clinical benefit compared with the general study population,” the authors wrote.

So, “although the clinical benefit rate of the patient group for whom a waiver was granted appears to be slightly higher, this difference might be explained by the selection process of the central study team, in which each waiver request was carefully considered, weighing the risks and potential benefits for the patient in question,” the authors explained.

Overall, “these findings advocate for a broader and more inclusive design when establishing novel trials, paving the way for a more effective and tailored application of cancer therapies in patients with advanced or refractory disease,” Dr. Gelderblom said.

Commenting on the study, Bishal Gyawali, MD, PhD, said that “relaxing eligibility criteria is important, and I support this. Trials should include patients that are more representative of the real-world, so that results are generalizable.”

However, “the paper overemphasized efficacy,” said Dr. Gyawali, from Queen’s University, Kingston, Ontario, Canada. The sample size of waiver-granted patients was small, plus “the clinical benefit rate is not a marker of efficacy.

“The response rate is somewhat better, but for a heterogeneous study with multiple targets and drugs, it is difficult to say much about treatment effects here,” Dr. Gyawali added. Overall, “we shouldn’t read too much into treatment benefits based on these numbers.”

Funding for the study was provided by the Stelvio for Life Foundation, the Dutch Cancer Society, Amgen, AstraZeneca, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, pharma&, Eisai Co., Ipsen, Merck Sharp & Dohme, Novartis, Pfizer, and Roche. Dr. Gelderblom declared no conflicts of interest, and Dr. Gyawali declared no conflicts of interest related to his comment.
 

A version of this article appeared on Medscape.com.

Patients with treatment-refractory cancers who did not meet eligibility criteria for a pan-cancer clinical trial but received waivers allowing them to participate had similar outcomes to patients who participated without waivers, a new analysis revealed.

The study, published online in Clinical Cancer Research, highlighted the potential benefits of broadening eligibility criteria for clinical trials.

“It is well known that results in an ‘ideal’ population do not always translate to the real-world population,” senior author Hans Gelderblom, MD, chair of the Department of Medical Oncology at the Leiden University Medical Center, Leiden, the Netherlands, said in a press release. “Eligibility criteria are often too strict, and educated exemptions by experienced investigators can help individual patients, especially in a last-resort trial.”

Although experts have expressed interest in improving trial inclusivity, it’s unclear how doing so might impact treatment safety and efficacy.

In the Drug Rediscovery Protocol (DRUP), Dr. Gelderblom and colleagues examined the impact of broadening trial eligibility on patient outcomes. DRUP is an ongoing Dutch national, multicenter, pan-cancer, nonrandomized clinical trial in which patients are treated off-label with approved molecularly targeted or immunotherapies.

In the trial, 1019 patients with treatment-refractory disease were matched to one of the available study drugs based on their tumor molecular profile and enrolled in parallel cohorts. Cohorts were defined by tumor type, molecular profile, and study drug.

Among these patients, 82 patients — 8% of the cohort — were granted waivers to participate. Most waivers (45%) were granted as exceptions to general- or drug-related eligibility criteria, often because of out-of-range lab results. Other categories included treatment and testing exceptions, as well as out-of-window testing. 

The researchers then compared safety and efficacy outcomes between the 82 participants granted waivers and the 937 who did not receive waivers. 

Overall, Dr. Gelderblom’s team found that the rate of serious adverse events was similar between patients who received a waiver and those who did not: 39% vs 41%, respectively.

A relationship between waivers and serious adverse events was deemed “unlikely” for 86% of patients and “possible” for 14%. In two cases concerning a direct relationship, for instance, patients who received waivers for decreased hemoglobin levels developed anemia.

The rate of clinical benefit — defined as an objective response or stable disease for at least 16 weeks — was similar between the groups. Overall, 40% of patients who received a waiver (33 of 82) had a clinical benefit vs 33% of patients without a waiver (P = .43). Median overall survival for patients that received a waiver was also similar — 11 months in the waiver group and 8 months in the nonwaiver group (hazard ratio, 0.87; P = .33).

“Safety and clinical benefit were preserved in patients for whom a waiver was granted,” the authors concluded.

The study had several limitations. The diversity of cancer types, treatments, and reasons for protocol exemptions precluded subgroup analyses. In addition, because the decision to grant waivers depended in large part on the likelihood of clinical benefit, “it is possible that patients who received waivers were positively selected for clinical benefit compared with the general study population,” the authors wrote.

So, “although the clinical benefit rate of the patient group for whom a waiver was granted appears to be slightly higher, this difference might be explained by the selection process of the central study team, in which each waiver request was carefully considered, weighing the risks and potential benefits for the patient in question,” the authors explained.

Overall, “these findings advocate for a broader and more inclusive design when establishing novel trials, paving the way for a more effective and tailored application of cancer therapies in patients with advanced or refractory disease,” Dr. Gelderblom said.

Commenting on the study, Bishal Gyawali, MD, PhD, said that “relaxing eligibility criteria is important, and I support this. Trials should include patients that are more representative of the real-world, so that results are generalizable.”

However, “the paper overemphasized efficacy,” said Dr. Gyawali, from Queen’s University, Kingston, Ontario, Canada. The sample size of waiver-granted patients was small, plus “the clinical benefit rate is not a marker of efficacy.

“The response rate is somewhat better, but for a heterogeneous study with multiple targets and drugs, it is difficult to say much about treatment effects here,” Dr. Gyawali added. Overall, “we shouldn’t read too much into treatment benefits based on these numbers.”

Funding for the study was provided by the Stelvio for Life Foundation, the Dutch Cancer Society, Amgen, AstraZeneca, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, pharma&, Eisai Co., Ipsen, Merck Sharp & Dohme, Novartis, Pfizer, and Roche. Dr. Gelderblom declared no conflicts of interest, and Dr. Gyawali declared no conflicts of interest related to his comment.
 

A version of this article appeared on Medscape.com.

Patients with treatment-refractory cancers who did not meet eligibility criteria for a pan-cancer clinical trial but received waivers allowing them to participate had similar outcomes to patients who participated without waivers, a new analysis revealed.

The study, published online in Clinical Cancer Research, highlighted the potential benefits of broadening eligibility criteria for clinical trials.

“It is well known that results in an ‘ideal’ population do not always translate to the real-world population,” senior author Hans Gelderblom, MD, chair of the Department of Medical Oncology at the Leiden University Medical Center, Leiden, the Netherlands, said in a press release. “Eligibility criteria are often too strict, and educated exemptions by experienced investigators can help individual patients, especially in a last-resort trial.”

Although experts have expressed interest in improving trial inclusivity, it’s unclear how doing so might impact treatment safety and efficacy.

In the Drug Rediscovery Protocol (DRUP), Dr. Gelderblom and colleagues examined the impact of broadening trial eligibility on patient outcomes. DRUP is an ongoing Dutch national, multicenter, pan-cancer, nonrandomized clinical trial in which patients are treated off-label with approved molecularly targeted or immunotherapies.

In the trial, 1019 patients with treatment-refractory disease were matched to one of the available study drugs based on their tumor molecular profile and enrolled in parallel cohorts. Cohorts were defined by tumor type, molecular profile, and study drug.

Among these patients, 82 patients — 8% of the cohort — were granted waivers to participate. Most waivers (45%) were granted as exceptions to general- or drug-related eligibility criteria, often because of out-of-range lab results. Other categories included treatment and testing exceptions, as well as out-of-window testing. 

The researchers then compared safety and efficacy outcomes between the 82 participants granted waivers and the 937 who did not receive waivers. 

Overall, Dr. Gelderblom’s team found that the rate of serious adverse events was similar between patients who received a waiver and those who did not: 39% vs 41%, respectively.

A relationship between waivers and serious adverse events was deemed “unlikely” for 86% of patients and “possible” for 14%. In two cases concerning a direct relationship, for instance, patients who received waivers for decreased hemoglobin levels developed anemia.

The rate of clinical benefit — defined as an objective response or stable disease for at least 16 weeks — was similar between the groups. Overall, 40% of patients who received a waiver (33 of 82) had a clinical benefit vs 33% of patients without a waiver (P = .43). Median overall survival for patients that received a waiver was also similar — 11 months in the waiver group and 8 months in the nonwaiver group (hazard ratio, 0.87; P = .33).

“Safety and clinical benefit were preserved in patients for whom a waiver was granted,” the authors concluded.

The study had several limitations. The diversity of cancer types, treatments, and reasons for protocol exemptions precluded subgroup analyses. In addition, because the decision to grant waivers depended in large part on the likelihood of clinical benefit, “it is possible that patients who received waivers were positively selected for clinical benefit compared with the general study population,” the authors wrote.

So, “although the clinical benefit rate of the patient group for whom a waiver was granted appears to be slightly higher, this difference might be explained by the selection process of the central study team, in which each waiver request was carefully considered, weighing the risks and potential benefits for the patient in question,” the authors explained.

Overall, “these findings advocate for a broader and more inclusive design when establishing novel trials, paving the way for a more effective and tailored application of cancer therapies in patients with advanced or refractory disease,” Dr. Gelderblom said.

Commenting on the study, Bishal Gyawali, MD, PhD, said that “relaxing eligibility criteria is important, and I support this. Trials should include patients that are more representative of the real-world, so that results are generalizable.”

However, “the paper overemphasized efficacy,” said Dr. Gyawali, from Queen’s University, Kingston, Ontario, Canada. The sample size of waiver-granted patients was small, plus “the clinical benefit rate is not a marker of efficacy.

“The response rate is somewhat better, but for a heterogeneous study with multiple targets and drugs, it is difficult to say much about treatment effects here,” Dr. Gyawali added. Overall, “we shouldn’t read too much into treatment benefits based on these numbers.”

Funding for the study was provided by the Stelvio for Life Foundation, the Dutch Cancer Society, Amgen, AstraZeneca, Bayer, Boehringer Ingelheim, Bristol Myers Squibb, pharma&, Eisai Co., Ipsen, Merck Sharp & Dohme, Novartis, Pfizer, and Roche. Dr. Gelderblom declared no conflicts of interest, and Dr. Gyawali declared no conflicts of interest related to his comment.
 

A version of this article appeared on Medscape.com.

An initial choice of disease-modifying therapy for patients with relapsing-remitting multiple sclerosis (MS) does not appear to have a large effect on eventual progression of disability and patient-reported outcomes, according to recent research published in Annals of Neurology.

Fredrik Piehl, MD, PhD, of the department of clinical neuroscience at Karolinska Institutet in Stockholm, and colleagues analyzed results from a cohort study in Sweden of 2449 patients with relapsing-remitting MS who started an initial disease-modifying therapy (DMT), and 2463 patients who switched from their first therapy between 2011 and 2018, with 1148 patients overlapping in both groups. DMTs evaluated in the group that started an initial treatment included rituximab (591 patients), natalizumab (334 patients), dimethyl fumarate (416 patients), interferon (992 patients), and glatiramer acetate (116 patients), while DMTs included in the group switching therapies were rituximab (748 patients), natalizumab (541 patients), dimethyl fumarate (570 patients), fingolimod (443 patients), and teriflunomide (161 patients).

The researchers compared patients receiving low-dose rituximab with other MS therapies, with confirmed disability worsening (CDW) over 12 months and change in disease-related impact on daily life as measured by MS Impact Scale-29 (MSIS-29) subscales as primary outcomes at 3 years after therapy initiation or switching. They also assessed the rate of relapse, discontinuation of therapy, and serious adverse events as secondary outcomes.

At 3 years, among patients who received rituximab, 9.1% of patients who initiated therapy and 5.1% who switched therapy experienced CDW, and there were no significant differences in disease worsening between patients who received rituximab and those who received other MS therapies. “Most instances of CDW on rituximab were in subjects with no relapse within 3 years of treatment start,” the researchers said.

Patient MSIS-29 physical subscores at 3 years improved by 1.3 points in the initial DMT group and by 0.4 points in the DMT-switching group, while MSIS-29 psychological scores improved by 8.4 points in the initial DMT and by 3.6 points in the DMT-switching group. “Adjusted for baseline characteristics, MSIS-29 physical subscale scores decreased more with natalizumab, both as a first DMT and after a DMT switch, compared with rituximab, although absolute differences were small,” Dr. Piehl and colleagues said.

With regard to secondary outcomes, there was a reduction in mean overall Expanded Disability Status Scale (EDSS) score compared with baseline in the initial rituximab group at 3 years (–0.2 points), with 28.7% of patients experiencing improvement and 19.0% experiencing worsening, while there was no overall change in mean EDSS score in the rituximab-switching group. At 5 years, mean EDSS scores decreased compared with baseline in the initial rituximab group (–0.1 point), with 27.1% patients experiencing improvement and 20.8% experiencing worsening, and there was an increase in overall EDSS score (0.1 point) at 5 years for the rituximab-switching group, with improvement in 17.9% of patients and worsening in 26.4% of patients. However, there were no significant differences between rituximab and other DMTs.

Patients in both initial and switching rituximab groups had a lower annualized relapse rate (ARR) compared with other DMTs, with the exception of natalizumab in the initial DMT group (3 vs 2 additional relapses per 100 patients per year). The highest ARR in the initial DMT group belonged to interferon (13 additional relapses per 100 patients per year) and teriflunomide (8 additional relapses per 100 patients per year). “Similar differences were evident also at 5 years, with significantly higher ARRs with all other DMTs compared with rituximab, except for natalizumab, in both the first DMT and DMT switch groups,” Dr. Piehl and colleagues said.

In the group of patients who received rituximab, 75.7% of patients had no evidence of disease activity (NEDA-3) at 3 years in the initial DMT group and 82.1% of patients in the DMT-switching group, which was “greater than for all comparators, except natalizumab as a first DMT,” the researchers said. “Proportions fulfilling NEDA-3 status at 5 years were higher with rituximab than with all comparators in both cohorts,” they noted.

Concerning safety, the researchers said there were minor differences in safety outcomes between rituximab and comparators, but patients in the DMT-switching group who received rituximab had a higher risk of severe infections compared with other groups.
 

Unanswered Questions About MS Therapies

In an interview, Mark Gudesblatt, MD, a neurologist at South Shore Neurologic Associates, New York, who was not involved in the study, emphasized the importance of high-potency DMTs and adherence for treatment success.

“Lower-efficacy DMT might result in insufficient suppression of disease activity that might not be clinically apparent,” he said. “Routine examination is not sufficient to detect cognitive impairment or change in cognitive impact of disease. Adherence is critical to therapy success, and infusion therapies or treatment not self-administered have higher likelihood of higher adherence rates.”

Commenting on the study by Piehl et al, Dr. Gudesblatt said it “provides important real-world information” on how infusion therapies are tolerated, their effectiveness, and their adherence compared with oral or self-administered treatments. For rituximab, “just as importantly, this therapy provides effective disease control with less accumulated disability and disability related health care costs,” he said.

Dr. Gudesblatt said there are several unanswered issues in the study, including the uncertain nature of the incidence and development of rituximab-blocking antibodies, which could potentially differ by biosimilar. “[H]ow this impacts therapy efficacy is unclear,” he said. “The presence of blocking antibodies should be routinely monitored.”

Another issue is the between-patient variation in degree of B-cell depletion and speed of B-cell repletion, which might differ based on therapy duration. “The timing and frequency of dosing is an issue that also needs further critical analysis and improved guidelines,” he noted.

Dr. Gudesblatt said up to 25% of patients with MS might have unrecognized immune deficiency. “[I]mmune deficiency unrelated to DMT as well as the development of immune deficiency related to DMT are issues of concern, as the rate of infections in B-cell depleting agents are higher than other class of DMT,” he explained. Patients with MS who develop infections carry significant risk of morbidity and mortality, he added.

“Lastly, the issue of vaccination failure is extremely high in B-cell depleting agents, and with the recent viral pandemic and lingering concerns about recurrent similar scenarios, this is another issue of great concern with use of this highly adherent and effective DMT choice,” Dr. Gudesblatt said.

Several authors reported personal and institutional relationships in the form of grants, consultancies, research support, honoraria, advisory board positions, travel support, and other fees for Bayer, Biogen, Merck, Novartis, Roche, and Teva. Dr. Gudesblatt reports no relevant conflicts of interest.

An initial choice of disease-modifying therapy for patients with relapsing-remitting multiple sclerosis (MS) does not appear to have a large effect on eventual progression of disability and patient-reported outcomes, according to recent research published in Annals of Neurology.

Fredrik Piehl, MD, PhD, of the department of clinical neuroscience at Karolinska Institutet in Stockholm, and colleagues analyzed results from a cohort study in Sweden of 2449 patients with relapsing-remitting MS who started an initial disease-modifying therapy (DMT), and 2463 patients who switched from their first therapy between 2011 and 2018, with 1148 patients overlapping in both groups. DMTs evaluated in the group that started an initial treatment included rituximab (591 patients), natalizumab (334 patients), dimethyl fumarate (416 patients), interferon (992 patients), and glatiramer acetate (116 patients), while DMTs included in the group switching therapies were rituximab (748 patients), natalizumab (541 patients), dimethyl fumarate (570 patients), fingolimod (443 patients), and teriflunomide (161 patients).

The researchers compared patients receiving low-dose rituximab with other MS therapies, with confirmed disability worsening (CDW) over 12 months and change in disease-related impact on daily life as measured by MS Impact Scale-29 (MSIS-29) subscales as primary outcomes at 3 years after therapy initiation or switching. They also assessed the rate of relapse, discontinuation of therapy, and serious adverse events as secondary outcomes.

At 3 years, among patients who received rituximab, 9.1% of patients who initiated therapy and 5.1% who switched therapy experienced CDW, and there were no significant differences in disease worsening between patients who received rituximab and those who received other MS therapies. “Most instances of CDW on rituximab were in subjects with no relapse within 3 years of treatment start,” the researchers said.

Patient MSIS-29 physical subscores at 3 years improved by 1.3 points in the initial DMT group and by 0.4 points in the DMT-switching group, while MSIS-29 psychological scores improved by 8.4 points in the initial DMT and by 3.6 points in the DMT-switching group. “Adjusted for baseline characteristics, MSIS-29 physical subscale scores decreased more with natalizumab, both as a first DMT and after a DMT switch, compared with rituximab, although absolute differences were small,” Dr. Piehl and colleagues said.

With regard to secondary outcomes, there was a reduction in mean overall Expanded Disability Status Scale (EDSS) score compared with baseline in the initial rituximab group at 3 years (–0.2 points), with 28.7% of patients experiencing improvement and 19.0% experiencing worsening, while there was no overall change in mean EDSS score in the rituximab-switching group. At 5 years, mean EDSS scores decreased compared with baseline in the initial rituximab group (–0.1 point), with 27.1% patients experiencing improvement and 20.8% experiencing worsening, and there was an increase in overall EDSS score (0.1 point) at 5 years for the rituximab-switching group, with improvement in 17.9% of patients and worsening in 26.4% of patients. However, there were no significant differences between rituximab and other DMTs.

Patients in both initial and switching rituximab groups had a lower annualized relapse rate (ARR) compared with other DMTs, with the exception of natalizumab in the initial DMT group (3 vs 2 additional relapses per 100 patients per year). The highest ARR in the initial DMT group belonged to interferon (13 additional relapses per 100 patients per year) and teriflunomide (8 additional relapses per 100 patients per year). “Similar differences were evident also at 5 years, with significantly higher ARRs with all other DMTs compared with rituximab, except for natalizumab, in both the first DMT and DMT switch groups,” Dr. Piehl and colleagues said.

In the group of patients who received rituximab, 75.7% of patients had no evidence of disease activity (NEDA-3) at 3 years in the initial DMT group and 82.1% of patients in the DMT-switching group, which was “greater than for all comparators, except natalizumab as a first DMT,” the researchers said. “Proportions fulfilling NEDA-3 status at 5 years were higher with rituximab than with all comparators in both cohorts,” they noted.

Concerning safety, the researchers said there were minor differences in safety outcomes between rituximab and comparators, but patients in the DMT-switching group who received rituximab had a higher risk of severe infections compared with other groups.
 

Unanswered Questions About MS Therapies

In an interview, Mark Gudesblatt, MD, a neurologist at South Shore Neurologic Associates, New York, who was not involved in the study, emphasized the importance of high-potency DMTs and adherence for treatment success.

“Lower-efficacy DMT might result in insufficient suppression of disease activity that might not be clinically apparent,” he said. “Routine examination is not sufficient to detect cognitive impairment or change in cognitive impact of disease. Adherence is critical to therapy success, and infusion therapies or treatment not self-administered have higher likelihood of higher adherence rates.”

Commenting on the study by Piehl et al, Dr. Gudesblatt said it “provides important real-world information” on how infusion therapies are tolerated, their effectiveness, and their adherence compared with oral or self-administered treatments. For rituximab, “just as importantly, this therapy provides effective disease control with less accumulated disability and disability related health care costs,” he said.

Dr. Gudesblatt said there are several unanswered issues in the study, including the uncertain nature of the incidence and development of rituximab-blocking antibodies, which could potentially differ by biosimilar. “[H]ow this impacts therapy efficacy is unclear,” he said. “The presence of blocking antibodies should be routinely monitored.”

Another issue is the between-patient variation in degree of B-cell depletion and speed of B-cell repletion, which might differ based on therapy duration. “The timing and frequency of dosing is an issue that also needs further critical analysis and improved guidelines,” he noted.

Dr. Gudesblatt said up to 25% of patients with MS might have unrecognized immune deficiency. “[I]mmune deficiency unrelated to DMT as well as the development of immune deficiency related to DMT are issues of concern, as the rate of infections in B-cell depleting agents are higher than other class of DMT,” he explained. Patients with MS who develop infections carry significant risk of morbidity and mortality, he added.

“Lastly, the issue of vaccination failure is extremely high in B-cell depleting agents, and with the recent viral pandemic and lingering concerns about recurrent similar scenarios, this is another issue of great concern with use of this highly adherent and effective DMT choice,” Dr. Gudesblatt said.

Several authors reported personal and institutional relationships in the form of grants, consultancies, research support, honoraria, advisory board positions, travel support, and other fees for Bayer, Biogen, Merck, Novartis, Roche, and Teva. Dr. Gudesblatt reports no relevant conflicts of interest.

An initial choice of disease-modifying therapy for patients with relapsing-remitting multiple sclerosis (MS) does not appear to have a large effect on eventual progression of disability and patient-reported outcomes, according to recent research published in Annals of Neurology.

Fredrik Piehl, MD, PhD, of the department of clinical neuroscience at Karolinska Institutet in Stockholm, and colleagues analyzed results from a cohort study in Sweden of 2449 patients with relapsing-remitting MS who started an initial disease-modifying therapy (DMT), and 2463 patients who switched from their first therapy between 2011 and 2018, with 1148 patients overlapping in both groups. DMTs evaluated in the group that started an initial treatment included rituximab (591 patients), natalizumab (334 patients), dimethyl fumarate (416 patients), interferon (992 patients), and glatiramer acetate (116 patients), while DMTs included in the group switching therapies were rituximab (748 patients), natalizumab (541 patients), dimethyl fumarate (570 patients), fingolimod (443 patients), and teriflunomide (161 patients).

The researchers compared patients receiving low-dose rituximab with other MS therapies, with confirmed disability worsening (CDW) over 12 months and change in disease-related impact on daily life as measured by MS Impact Scale-29 (MSIS-29) subscales as primary outcomes at 3 years after therapy initiation or switching. They also assessed the rate of relapse, discontinuation of therapy, and serious adverse events as secondary outcomes.

At 3 years, among patients who received rituximab, 9.1% of patients who initiated therapy and 5.1% who switched therapy experienced CDW, and there were no significant differences in disease worsening between patients who received rituximab and those who received other MS therapies. “Most instances of CDW on rituximab were in subjects with no relapse within 3 years of treatment start,” the researchers said.

Patient MSIS-29 physical subscores at 3 years improved by 1.3 points in the initial DMT group and by 0.4 points in the DMT-switching group, while MSIS-29 psychological scores improved by 8.4 points in the initial DMT and by 3.6 points in the DMT-switching group. “Adjusted for baseline characteristics, MSIS-29 physical subscale scores decreased more with natalizumab, both as a first DMT and after a DMT switch, compared with rituximab, although absolute differences were small,” Dr. Piehl and colleagues said.

With regard to secondary outcomes, there was a reduction in mean overall Expanded Disability Status Scale (EDSS) score compared with baseline in the initial rituximab group at 3 years (–0.2 points), with 28.7% of patients experiencing improvement and 19.0% experiencing worsening, while there was no overall change in mean EDSS score in the rituximab-switching group. At 5 years, mean EDSS scores decreased compared with baseline in the initial rituximab group (–0.1 point), with 27.1% patients experiencing improvement and 20.8% experiencing worsening, and there was an increase in overall EDSS score (0.1 point) at 5 years for the rituximab-switching group, with improvement in 17.9% of patients and worsening in 26.4% of patients. However, there were no significant differences between rituximab and other DMTs.

Patients in both initial and switching rituximab groups had a lower annualized relapse rate (ARR) compared with other DMTs, with the exception of natalizumab in the initial DMT group (3 vs 2 additional relapses per 100 patients per year). The highest ARR in the initial DMT group belonged to interferon (13 additional relapses per 100 patients per year) and teriflunomide (8 additional relapses per 100 patients per year). “Similar differences were evident also at 5 years, with significantly higher ARRs with all other DMTs compared with rituximab, except for natalizumab, in both the first DMT and DMT switch groups,” Dr. Piehl and colleagues said.

In the group of patients who received rituximab, 75.7% of patients had no evidence of disease activity (NEDA-3) at 3 years in the initial DMT group and 82.1% of patients in the DMT-switching group, which was “greater than for all comparators, except natalizumab as a first DMT,” the researchers said. “Proportions fulfilling NEDA-3 status at 5 years were higher with rituximab than with all comparators in both cohorts,” they noted.

Concerning safety, the researchers said there were minor differences in safety outcomes between rituximab and comparators, but patients in the DMT-switching group who received rituximab had a higher risk of severe infections compared with other groups.
 

Unanswered Questions About MS Therapies

In an interview, Mark Gudesblatt, MD, a neurologist at South Shore Neurologic Associates, New York, who was not involved in the study, emphasized the importance of high-potency DMTs and adherence for treatment success.

“Lower-efficacy DMT might result in insufficient suppression of disease activity that might not be clinically apparent,” he said. “Routine examination is not sufficient to detect cognitive impairment or change in cognitive impact of disease. Adherence is critical to therapy success, and infusion therapies or treatment not self-administered have higher likelihood of higher adherence rates.”

Commenting on the study by Piehl et al, Dr. Gudesblatt said it “provides important real-world information” on how infusion therapies are tolerated, their effectiveness, and their adherence compared with oral or self-administered treatments. For rituximab, “just as importantly, this therapy provides effective disease control with less accumulated disability and disability related health care costs,” he said.

Dr. Gudesblatt said there are several unanswered issues in the study, including the uncertain nature of the incidence and development of rituximab-blocking antibodies, which could potentially differ by biosimilar. “[H]ow this impacts therapy efficacy is unclear,” he said. “The presence of blocking antibodies should be routinely monitored.”

Another issue is the between-patient variation in degree of B-cell depletion and speed of B-cell repletion, which might differ based on therapy duration. “The timing and frequency of dosing is an issue that also needs further critical analysis and improved guidelines,” he noted.

Dr. Gudesblatt said up to 25% of patients with MS might have unrecognized immune deficiency. “[I]mmune deficiency unrelated to DMT as well as the development of immune deficiency related to DMT are issues of concern, as the rate of infections in B-cell depleting agents are higher than other class of DMT,” he explained. Patients with MS who develop infections carry significant risk of morbidity and mortality, he added.

“Lastly, the issue of vaccination failure is extremely high in B-cell depleting agents, and with the recent viral pandemic and lingering concerns about recurrent similar scenarios, this is another issue of great concern with use of this highly adherent and effective DMT choice,” Dr. Gudesblatt said.

Several authors reported personal and institutional relationships in the form of grants, consultancies, research support, honoraria, advisory board positions, travel support, and other fees for Bayer, Biogen, Merck, Novartis, Roche, and Teva. Dr. Gudesblatt reports no relevant conflicts of interest.

Recent research on popular weight loss drugs has uncovered surprising benefits beyond their intended use, like lowering the risk of fatal heart attacks. And now there may be another unforeseen advantage: People with type 2 diabetes who took these drugs had a lower risk of having 10 out of 13 obesity-related cancers, compared to those who used insulin therapy.

That’s according to a study published July 5 in JAMA Network Open where researchers studied glucagon-like peptide receptor agonists (known as GLP-1RAs), a class of drugs used to treat diabetes and obesity. Ozempic, Wegovy, Mounjaro, and Zepbound, which have become well-known recently because they are linked to rapid weight loss, contain GLP-1RAs.

For the study, they looked at electronic health records of 1.7 million patients who had type 2 diabetes, no prior diagnosis of obesity-related cancers, and had been prescribed GLP-1RAs, insulins, or metformin from March 2005 to November 2018.

The scientists found that compared to patients who took insulin, people who took GLP-1RAs had a “significant risk reduction” in 10 of 13 obesity-related cancers. Those 10 cancers were esophageal, colorectal, endometrial, gallbladder, kidney, liver, ovarian, and pancreatic cancers, as well as meningioma and multiple myeloma.

Compared with patients taking insulin, patients taking GLP-1RAs showed no statistically significant reduction in stomach cancer and no reduced risk of breast and thyroid cancers, the study said.

But the study found no decrease in cancer risk with GLP-1RAs compared with metformin.

While the study results suggest that these drugs may reduce the risk of certain obesity-related cancers better than insulins, more research is needed, they said.

A version of this article appeared on WebMD.com.

Recent research on popular weight loss drugs has uncovered surprising benefits beyond their intended use, like lowering the risk of fatal heart attacks. And now there may be another unforeseen advantage: People with type 2 diabetes who took these drugs had a lower risk of having 10 out of 13 obesity-related cancers, compared to those who used insulin therapy.

That’s according to a study published July 5 in JAMA Network Open where researchers studied glucagon-like peptide receptor agonists (known as GLP-1RAs), a class of drugs used to treat diabetes and obesity. Ozempic, Wegovy, Mounjaro, and Zepbound, which have become well-known recently because they are linked to rapid weight loss, contain GLP-1RAs.

For the study, they looked at electronic health records of 1.7 million patients who had type 2 diabetes, no prior diagnosis of obesity-related cancers, and had been prescribed GLP-1RAs, insulins, or metformin from March 2005 to November 2018.

The scientists found that compared to patients who took insulin, people who took GLP-1RAs had a “significant risk reduction” in 10 of 13 obesity-related cancers. Those 10 cancers were esophageal, colorectal, endometrial, gallbladder, kidney, liver, ovarian, and pancreatic cancers, as well as meningioma and multiple myeloma.

Compared with patients taking insulin, patients taking GLP-1RAs showed no statistically significant reduction in stomach cancer and no reduced risk of breast and thyroid cancers, the study said.

But the study found no decrease in cancer risk with GLP-1RAs compared with metformin.

While the study results suggest that these drugs may reduce the risk of certain obesity-related cancers better than insulins, more research is needed, they said.

A version of this article appeared on WebMD.com.

Recent research on popular weight loss drugs has uncovered surprising benefits beyond their intended use, like lowering the risk of fatal heart attacks. And now there may be another unforeseen advantage: People with type 2 diabetes who took these drugs had a lower risk of having 10 out of 13 obesity-related cancers, compared to those who used insulin therapy.

That’s according to a study published July 5 in JAMA Network Open where researchers studied glucagon-like peptide receptor agonists (known as GLP-1RAs), a class of drugs used to treat diabetes and obesity. Ozempic, Wegovy, Mounjaro, and Zepbound, which have become well-known recently because they are linked to rapid weight loss, contain GLP-1RAs.

For the study, they looked at electronic health records of 1.7 million patients who had type 2 diabetes, no prior diagnosis of obesity-related cancers, and had been prescribed GLP-1RAs, insulins, or metformin from March 2005 to November 2018.

The scientists found that compared to patients who took insulin, people who took GLP-1RAs had a “significant risk reduction” in 10 of 13 obesity-related cancers. Those 10 cancers were esophageal, colorectal, endometrial, gallbladder, kidney, liver, ovarian, and pancreatic cancers, as well as meningioma and multiple myeloma.

Compared with patients taking insulin, patients taking GLP-1RAs showed no statistically significant reduction in stomach cancer and no reduced risk of breast and thyroid cancers, the study said.

But the study found no decrease in cancer risk with GLP-1RAs compared with metformin.

While the study results suggest that these drugs may reduce the risk of certain obesity-related cancers better than insulins, more research is needed, they said.

A version of this article appeared on WebMD.com.

Recently, the British Journal of General Practice published a paper that claimed that anxiety may be a prodromal feature of Parkinson’s disease). That news was widely picked up and spread.

The researchers certainly have some interesting data, but this sort of article, once enough general and social media websites get a hold of it, is bound to cause panic in the streets. And phone calls to my office.

An anxious-by-nature friend even emailed me the link with a laconic “Well, I’m screwed” in the subject line.

Is there a correlation between Parkinson’s disease and anxiety? Probably. Any of us practicing neurology have seen it. Some of it is likely from the anxiety of the situation, but the biochemical changes brought by the disease are also likely a big part.

But does that mean everyone with anxiety has Parkinson’s disease? Of course not. Anxiety is common, probably more common in our current era than ever before (this is why I tell patients not to watch the news and to avoid social media — they’re bad for your sanity and blood pressure).

Stories like this, once they start getting forwarded on Facebook (or another social media outlet), only raise anxiety, which results in more forwarding, and the snowball begins rolling downhill before crashing into my office (obviously this is a figure of speech, as it’s July in Phoenix).

The research is interesting. The point is valid. But the leaps the public makes are ... problematic. It’s only a matter of time before someone comes in demanding a DaT scan because they’re anxious. At $4K a test, that’s not happening.

The intersection between medical research and mass media, while not new, becomes increasingly problematic in the social media era, where things that are preliminary in the medical literature make the jump to certainty in the public arena.

Which raises anxiety all around.

Dr. Block has a solo neurology practice in Scottsdale, Arizona.

Recently, the British Journal of General Practice published a paper that claimed that anxiety may be a prodromal feature of Parkinson’s disease). That news was widely picked up and spread.

The researchers certainly have some interesting data, but this sort of article, once enough general and social media websites get a hold of it, is bound to cause panic in the streets. And phone calls to my office.

An anxious-by-nature friend even emailed me the link with a laconic “Well, I’m screwed” in the subject line.

Is there a correlation between Parkinson’s disease and anxiety? Probably. Any of us practicing neurology have seen it. Some of it is likely from the anxiety of the situation, but the biochemical changes brought by the disease are also likely a big part.

But does that mean everyone with anxiety has Parkinson’s disease? Of course not. Anxiety is common, probably more common in our current era than ever before (this is why I tell patients not to watch the news and to avoid social media — they’re bad for your sanity and blood pressure).

Stories like this, once they start getting forwarded on Facebook (or another social media outlet), only raise anxiety, which results in more forwarding, and the snowball begins rolling downhill before crashing into my office (obviously this is a figure of speech, as it’s July in Phoenix).

The research is interesting. The point is valid. But the leaps the public makes are ... problematic. It’s only a matter of time before someone comes in demanding a DaT scan because they’re anxious. At $4K a test, that’s not happening.

The intersection between medical research and mass media, while not new, becomes increasingly problematic in the social media era, where things that are preliminary in the medical literature make the jump to certainty in the public arena.

Which raises anxiety all around.

Dr. Block has a solo neurology practice in Scottsdale, Arizona.

Recently, the British Journal of General Practice published a paper that claimed that anxiety may be a prodromal feature of Parkinson’s disease). That news was widely picked up and spread.

The researchers certainly have some interesting data, but this sort of article, once enough general and social media websites get a hold of it, is bound to cause panic in the streets. And phone calls to my office.

An anxious-by-nature friend even emailed me the link with a laconic “Well, I’m screwed” in the subject line.

Is there a correlation between Parkinson’s disease and anxiety? Probably. Any of us practicing neurology have seen it. Some of it is likely from the anxiety of the situation, but the biochemical changes brought by the disease are also likely a big part.

But does that mean everyone with anxiety has Parkinson’s disease? Of course not. Anxiety is common, probably more common in our current era than ever before (this is why I tell patients not to watch the news and to avoid social media — they’re bad for your sanity and blood pressure).

Stories like this, once they start getting forwarded on Facebook (or another social media outlet), only raise anxiety, which results in more forwarding, and the snowball begins rolling downhill before crashing into my office (obviously this is a figure of speech, as it’s July in Phoenix).

The research is interesting. The point is valid. But the leaps the public makes are ... problematic. It’s only a matter of time before someone comes in demanding a DaT scan because they’re anxious. At $4K a test, that’s not happening.

The intersection between medical research and mass media, while not new, becomes increasingly problematic in the social media era, where things that are preliminary in the medical literature make the jump to certainty in the public arena.

Which raises anxiety all around.

Dr. Block has a solo neurology practice in Scottsdale, Arizona.