Major Depressive Disorder

Elevated depressive symptoms were associated with an additional brain age of nearly 3 years, based on data from more than 600 individuals.

Previous research suggests a possible link between depression and increased risk of dementia in older adults, but the association between depression and brain health in early adulthood and midlife has not been well studied, wrote Christina S. Dintica, PhD, of the University of California, San Francisco, and colleagues.

In a study published in the Journal of Affective Disorders, the researchers identified 649 individuals aged 23-36 at baseline who were part of the Coronary Artery Risk Development in Young Adults (CARDIA) study. All participants underwent brain MRI and cognitive testing. Depressive symptoms were assessed six times over a 25-year period using the Center for Epidemiological Studies Depression scale (CES–D), and the scores were analyzed as time-weighted averages (TWA). Elevated depressive symptoms were defined as CES-D scores of 16 or higher. Brain age was assessed via high-dimensional neuroimaging. Approximately half of the participants were female, and half were Black.

Overall, each 5-point increment in TWA depression symptoms over 25 years was associated with a 1-year increase in brain age, and individuals with elevated TWA depression averaged a 3-year increase in brain age compared with those with lower levels of depression after controlling for factors including chronological age, sex, education, race, MRI scanning site, and intracranial volume, they said. The association was attenuated in a model controlling for antidepressant use, and further attenuated after adjusting for smoking, alcohol consumption, income, body mass index, diabetes, and physical exercise.

The researchers also investigated the impact of the age period of elevated depressive symptoms on brain age. Compared with low depressive symptoms, elevated TWA CES-D at ages 30-39 years, 40-49 years, and 50-59 years was associated with increased brain ages of 2.43, 3.19, and 1.82.

In addition, elevated depressive symptoms were associated with a threefold increase in the odds of poor cognitive function at midlife (odds ratio, 3.30), although these odds were reduced after adjusting for use of antidepressants (OR, 1.47).

The mechanisms of action for the link between depression and accelerated brain aging remains uncertain, the researchers wrote in their discussion. “Studies over the last 20 years have demonstrated that increased inflammation and hyperactivity of the hypothalamic-pituitary-adrenal (HPA) axis are two of the most consistent biological findings in major depression, which have been linked to premature aging,” they noted. “Alternative explanations for the link between depression and adverse brain health could be underlying factors that explain both outcomes rather independently, such as low socioeconomic status, childhood maltreatment, or shared genetic effects,” they added.

Adjustment for antidepressant use had little effect overall on the association between depressive symptom severity and brain age, they said.

The current study findings were limited by the single assessment of brain age, which prevented evaluation of the temporality of the association between brain aging and depression, the researchers noted.

However, the results were strengthened by the large and diverse cohort, long-term follow-up, and use of high-dimensional neuroimaging, they said. Longitudinal studies are needed to explore mechanisms of action and the potential benefits of antidepressants, they added.

In the meantime, monitoring and treating depressive symptoms in young adults may help promote brain health in midlife and older age, they concluded.

The CARDIA study was supported by the National Heart, Lung, and Blood Institute, the National Institute on Aging, and the Alzheimer’s Association. The researchers had no financial conflicts to disclose.

Elevated depressive symptoms were associated with an additional brain age of nearly 3 years, based on data from more than 600 individuals.

Previous research suggests a possible link between depression and increased risk of dementia in older adults, but the association between depression and brain health in early adulthood and midlife has not been well studied, wrote Christina S. Dintica, PhD, of the University of California, San Francisco, and colleagues.

In a study published in the Journal of Affective Disorders, the researchers identified 649 individuals aged 23-36 at baseline who were part of the Coronary Artery Risk Development in Young Adults (CARDIA) study. All participants underwent brain MRI and cognitive testing. Depressive symptoms were assessed six times over a 25-year period using the Center for Epidemiological Studies Depression scale (CES–D), and the scores were analyzed as time-weighted averages (TWA). Elevated depressive symptoms were defined as CES-D scores of 16 or higher. Brain age was assessed via high-dimensional neuroimaging. Approximately half of the participants were female, and half were Black.

Overall, each 5-point increment in TWA depression symptoms over 25 years was associated with a 1-year increase in brain age, and individuals with elevated TWA depression averaged a 3-year increase in brain age compared with those with lower levels of depression after controlling for factors including chronological age, sex, education, race, MRI scanning site, and intracranial volume, they said. The association was attenuated in a model controlling for antidepressant use, and further attenuated after adjusting for smoking, alcohol consumption, income, body mass index, diabetes, and physical exercise.

The researchers also investigated the impact of the age period of elevated depressive symptoms on brain age. Compared with low depressive symptoms, elevated TWA CES-D at ages 30-39 years, 40-49 years, and 50-59 years was associated with increased brain ages of 2.43, 3.19, and 1.82.

In addition, elevated depressive symptoms were associated with a threefold increase in the odds of poor cognitive function at midlife (odds ratio, 3.30), although these odds were reduced after adjusting for use of antidepressants (OR, 1.47).

The mechanisms of action for the link between depression and accelerated brain aging remains uncertain, the researchers wrote in their discussion. “Studies over the last 20 years have demonstrated that increased inflammation and hyperactivity of the hypothalamic-pituitary-adrenal (HPA) axis are two of the most consistent biological findings in major depression, which have been linked to premature aging,” they noted. “Alternative explanations for the link between depression and adverse brain health could be underlying factors that explain both outcomes rather independently, such as low socioeconomic status, childhood maltreatment, or shared genetic effects,” they added.

Adjustment for antidepressant use had little effect overall on the association between depressive symptom severity and brain age, they said.

The current study findings were limited by the single assessment of brain age, which prevented evaluation of the temporality of the association between brain aging and depression, the researchers noted.

However, the results were strengthened by the large and diverse cohort, long-term follow-up, and use of high-dimensional neuroimaging, they said. Longitudinal studies are needed to explore mechanisms of action and the potential benefits of antidepressants, they added.

In the meantime, monitoring and treating depressive symptoms in young adults may help promote brain health in midlife and older age, they concluded.

The CARDIA study was supported by the National Heart, Lung, and Blood Institute, the National Institute on Aging, and the Alzheimer’s Association. The researchers had no financial conflicts to disclose.

Elevated depressive symptoms were associated with an additional brain age of nearly 3 years, based on data from more than 600 individuals.

Previous research suggests a possible link between depression and increased risk of dementia in older adults, but the association between depression and brain health in early adulthood and midlife has not been well studied, wrote Christina S. Dintica, PhD, of the University of California, San Francisco, and colleagues.

In a study published in the Journal of Affective Disorders, the researchers identified 649 individuals aged 23-36 at baseline who were part of the Coronary Artery Risk Development in Young Adults (CARDIA) study. All participants underwent brain MRI and cognitive testing. Depressive symptoms were assessed six times over a 25-year period using the Center for Epidemiological Studies Depression scale (CES–D), and the scores were analyzed as time-weighted averages (TWA). Elevated depressive symptoms were defined as CES-D scores of 16 or higher. Brain age was assessed via high-dimensional neuroimaging. Approximately half of the participants were female, and half were Black.

Overall, each 5-point increment in TWA depression symptoms over 25 years was associated with a 1-year increase in brain age, and individuals with elevated TWA depression averaged a 3-year increase in brain age compared with those with lower levels of depression after controlling for factors including chronological age, sex, education, race, MRI scanning site, and intracranial volume, they said. The association was attenuated in a model controlling for antidepressant use, and further attenuated after adjusting for smoking, alcohol consumption, income, body mass index, diabetes, and physical exercise.

The researchers also investigated the impact of the age period of elevated depressive symptoms on brain age. Compared with low depressive symptoms, elevated TWA CES-D at ages 30-39 years, 40-49 years, and 50-59 years was associated with increased brain ages of 2.43, 3.19, and 1.82.

In addition, elevated depressive symptoms were associated with a threefold increase in the odds of poor cognitive function at midlife (odds ratio, 3.30), although these odds were reduced after adjusting for use of antidepressants (OR, 1.47).

The mechanisms of action for the link between depression and accelerated brain aging remains uncertain, the researchers wrote in their discussion. “Studies over the last 20 years have demonstrated that increased inflammation and hyperactivity of the hypothalamic-pituitary-adrenal (HPA) axis are two of the most consistent biological findings in major depression, which have been linked to premature aging,” they noted. “Alternative explanations for the link between depression and adverse brain health could be underlying factors that explain both outcomes rather independently, such as low socioeconomic status, childhood maltreatment, or shared genetic effects,” they added.

Adjustment for antidepressant use had little effect overall on the association between depressive symptom severity and brain age, they said.

The current study findings were limited by the single assessment of brain age, which prevented evaluation of the temporality of the association between brain aging and depression, the researchers noted.

However, the results were strengthened by the large and diverse cohort, long-term follow-up, and use of high-dimensional neuroimaging, they said. Longitudinal studies are needed to explore mechanisms of action and the potential benefits of antidepressants, they added.

In the meantime, monitoring and treating depressive symptoms in young adults may help promote brain health in midlife and older age, they concluded.

The CARDIA study was supported by the National Heart, Lung, and Blood Institute, the National Institute on Aging, and the Alzheimer’s Association. The researchers had no financial conflicts to disclose.

An experimental psychedelic tryptamine combined with supportive therapy is associated with improvements in moderate to severe major depressive disorder (MDD), new research suggests.

Top-line results from a phase 2a study of SPL026 (intravenous N,N-Dimethyltryptamine [DMT]) showed a 57% remission rate 3 months after participants received a single dose of the drug, the developer reports.

Small Pharma noted in a press release that this is the first placebo-controlled efficacy trial of a short-duration psychedelic for depression completed to date.

Investigators reported significant improvement in depression symptoms 2 weeks after dosing, which was the primary endpoint, and the improvement persisted at week 12.

“We now have the first evidence that SPL026 DMT, combined with supportive therapy, may be effective for people suffering from MDD,” chief investigator David Erritzoe, MD, PhD, clinical psychiatrist at Imperial College London, said in a statement.

“For patients who are unfortunate to experience little benefit from existing antidepressants, the potential for rapid and durable relief from a single treatment, as shown in this trial, is very promising,” Dr. Erritzoe added.
 

Randomized trial results

The blinded, randomized, placebo-controlled, two-staged phase 2a study included 34 patients with moderate to severe MDD. Those who were taking pharmacological antidepressant medication at baseline stopped taking the medication prior to dosing with SPL026.

Patients received a placebo (n = 17) or active treatment (n = 17). The latter consisted of a short IV infusion of 21.5 mg of SPL026, resulting in a 20- to 30-minute psychedelic experience, and supportive therapy.

The dose was selected based on data analysis from the company’s phase 1 study in healthy volunteers.

Efficacy was assessed using the Montgomery-Asberg Depression Rating Scale (MADRS) to measure changes in MDD symptoms.

Two weeks after dosing, those receiving the novel therapy showed a significant reduction in depressive symptoms, demonstrating a –7.4-point difference versus the placebo group in MADRS score (P = .02).

Analysis of key secondary endpoints showed a rapid onset of antidepressant effect 1 week post-dose, with a statistically significant difference in MADRS score between the active and placebo groups of –10.8 points (P = .002).
 

Next steps?

All participants were subsequently enrolled into an open-label phase of the trial where they received a single dose of SPL026 with supportive therapy. They were then followed for a further 12 weeks.

In the open-label phase, patients who received at least one active dose of SPL026 with supportive therapy reported a durable improvement in depression symptoms.

No apparent difference in antidepressant effect was observed between a one- or two-dose regimen of SPL026.

“SPL026 with supportive therapy was shown to have a significant antidepressant effect that was rapid and durable,” Carol Routledge, PhD, chief medical and scientific officer at Small Pharma, said in the statement.

Small Pharma

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

An experimental psychedelic tryptamine combined with supportive therapy is associated with improvements in moderate to severe major depressive disorder (MDD), new research suggests.

Top-line results from a phase 2a study of SPL026 (intravenous N,N-Dimethyltryptamine [DMT]) showed a 57% remission rate 3 months after participants received a single dose of the drug, the developer reports.

Small Pharma noted in a press release that this is the first placebo-controlled efficacy trial of a short-duration psychedelic for depression completed to date.

Investigators reported significant improvement in depression symptoms 2 weeks after dosing, which was the primary endpoint, and the improvement persisted at week 12.

“We now have the first evidence that SPL026 DMT, combined with supportive therapy, may be effective for people suffering from MDD,” chief investigator David Erritzoe, MD, PhD, clinical psychiatrist at Imperial College London, said in a statement.

“For patients who are unfortunate to experience little benefit from existing antidepressants, the potential for rapid and durable relief from a single treatment, as shown in this trial, is very promising,” Dr. Erritzoe added.
 

Randomized trial results

The blinded, randomized, placebo-controlled, two-staged phase 2a study included 34 patients with moderate to severe MDD. Those who were taking pharmacological antidepressant medication at baseline stopped taking the medication prior to dosing with SPL026.

Patients received a placebo (n = 17) or active treatment (n = 17). The latter consisted of a short IV infusion of 21.5 mg of SPL026, resulting in a 20- to 30-minute psychedelic experience, and supportive therapy.

The dose was selected based on data analysis from the company’s phase 1 study in healthy volunteers.

Efficacy was assessed using the Montgomery-Asberg Depression Rating Scale (MADRS) to measure changes in MDD symptoms.

Two weeks after dosing, those receiving the novel therapy showed a significant reduction in depressive symptoms, demonstrating a –7.4-point difference versus the placebo group in MADRS score (P = .02).

Analysis of key secondary endpoints showed a rapid onset of antidepressant effect 1 week post-dose, with a statistically significant difference in MADRS score between the active and placebo groups of –10.8 points (P = .002).
 

Next steps?

All participants were subsequently enrolled into an open-label phase of the trial where they received a single dose of SPL026 with supportive therapy. They were then followed for a further 12 weeks.

In the open-label phase, patients who received at least one active dose of SPL026 with supportive therapy reported a durable improvement in depression symptoms.

No apparent difference in antidepressant effect was observed between a one- or two-dose regimen of SPL026.

“SPL026 with supportive therapy was shown to have a significant antidepressant effect that was rapid and durable,” Carol Routledge, PhD, chief medical and scientific officer at Small Pharma, said in the statement.

Small Pharma

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

An experimental psychedelic tryptamine combined with supportive therapy is associated with improvements in moderate to severe major depressive disorder (MDD), new research suggests.

Top-line results from a phase 2a study of SPL026 (intravenous N,N-Dimethyltryptamine [DMT]) showed a 57% remission rate 3 months after participants received a single dose of the drug, the developer reports.

Small Pharma noted in a press release that this is the first placebo-controlled efficacy trial of a short-duration psychedelic for depression completed to date.

Investigators reported significant improvement in depression symptoms 2 weeks after dosing, which was the primary endpoint, and the improvement persisted at week 12.

“We now have the first evidence that SPL026 DMT, combined with supportive therapy, may be effective for people suffering from MDD,” chief investigator David Erritzoe, MD, PhD, clinical psychiatrist at Imperial College London, said in a statement.

“For patients who are unfortunate to experience little benefit from existing antidepressants, the potential for rapid and durable relief from a single treatment, as shown in this trial, is very promising,” Dr. Erritzoe added.
 

Randomized trial results

The blinded, randomized, placebo-controlled, two-staged phase 2a study included 34 patients with moderate to severe MDD. Those who were taking pharmacological antidepressant medication at baseline stopped taking the medication prior to dosing with SPL026.

Patients received a placebo (n = 17) or active treatment (n = 17). The latter consisted of a short IV infusion of 21.5 mg of SPL026, resulting in a 20- to 30-minute psychedelic experience, and supportive therapy.

The dose was selected based on data analysis from the company’s phase 1 study in healthy volunteers.

Efficacy was assessed using the Montgomery-Asberg Depression Rating Scale (MADRS) to measure changes in MDD symptoms.

Two weeks after dosing, those receiving the novel therapy showed a significant reduction in depressive symptoms, demonstrating a –7.4-point difference versus the placebo group in MADRS score (P = .02).

Analysis of key secondary endpoints showed a rapid onset of antidepressant effect 1 week post-dose, with a statistically significant difference in MADRS score between the active and placebo groups of –10.8 points (P = .002).
 

Next steps?

All participants were subsequently enrolled into an open-label phase of the trial where they received a single dose of SPL026 with supportive therapy. They were then followed for a further 12 weeks.

In the open-label phase, patients who received at least one active dose of SPL026 with supportive therapy reported a durable improvement in depression symptoms.

No apparent difference in antidepressant effect was observed between a one- or two-dose regimen of SPL026.

“SPL026 with supportive therapy was shown to have a significant antidepressant effect that was rapid and durable,” Carol Routledge, PhD, chief medical and scientific officer at Small Pharma, said in the statement.

Small Pharma

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

A specific lipid profile can identify patients with schizophrenia, possibly paving the way for the development of the first clinically useful diagnostic test for a severe psychiatric illness, new research suggests.

Although such a test remains a long way off, investigators said, the identification of the unique lipid signature is a critical first step. However, one expert noted that the lipid signature not accurately differentiating patients with schizophrenia from those with bipolar disorder (BD) and major depressive disorder (MDD) limits the findings’ applicability.

The profile includes 77 lipids identified from a large analysis of many different classes of lipid species. Lipids such as cholesterol and triglycerides made up only a small fraction of the classes assessed.

The investigators noted that some of the lipids in the profile associated with schizophrenia are involved in determining cell membrane structure and fluidity or cell-to-cell messaging, which could be important to synaptic function.

“These 77 lipids jointly constitute a lipidomic profile that discriminated between individuals with schizophrenia and individuals without a mental health diagnosis with very high accuracy,” investigator Eva C. Schulte, MD, PhD, of the Institute of Psychiatric Phenomics and Genomics (IPPG) and the department of psychiatry and psychotherapy at University Hospital of Ludwig-Maximilians-University, Munich, told this news organization.

“Of note, we did not see large profile differences between patients with a first psychotic episode who had only been treated for a few days and individuals on long-term antipsychotic therapy,” Dr. Schulte said.

The findings were published online in JAMA Psychiatry.
 

Detailed analysis

Lipid profiles in patients with psychiatric diagnoses have been reported previously, but those studies were small and did not identify a reliable signature independent of demographic and environmental factors.

For the current study, researchers analyzed blood plasma lipid levels from 980 individuals with severe psychiatric illness and 572 people without mental illness from three cohorts in China, Germany, Austria, and Russia.

The study sample included patients with schizophrenia (n = 478), BD (n = 184), and MDD (n = 256), as well as 104 patients with a first psychotic episode who had no long-term psychopharmacology use.

Results showed 77 lipids in 14 classes were significantly altered between participants with schizophrenia and the healthy control in all three cohorts.

The most prominent alterations at the lipid class level included increases in ceramide, triacylglyceride, and phosphatidylcholine and decreases in acylcarnitine and phosphatidylcholine plasmalogen (P < .05 for each cohort).

Schizophrenia-associated lipid differences were similar between patients with high and low symptom severity (P < .001), suggesting that the lipid alterations might represent a trait of the psychiatric disorder.
 

No medication effect

Most patients in the study received long-term antipsychotic medication, which has been shown previously to affect some plasma lipid compounds.

So, to assess a possible effect of medication, the investigators evaluated 13 patients with schizophrenia who were not medicated for at least 6 months prior to blood sample collection and the cohort of patients with a first psychotic episode who had been medicated for less than 1 week.

Comparison of the lipid intensity differences between the healthy controls group and either participants receiving medication or those who were not medicated revealed highly correlated alterations in both patient groups (P < .001).

“Taken together, these results indicate that the identified schizophrenia-associated alterations cannot be attributed to medication effects,” the investigators wrote.

Lipidome alterations in BPD and MDD, assessed in 184 and 256 individuals, respectively, were similar to those of schizophrenia but not identical.

Researchers isolated 97 lipids altered in the MDD cohorts and 47 in the BPD cohorts – with 30 and 28, respectively, overlapping with the schizophrenia-associated features and seven of the lipids found among all three disorders.

Although this was significantly more than expected by chance (P < .001), it was not strong enough to demonstrate a clear association, the investigators wrote.

“The profiles were very successful at differentiating individuals with severe mental health conditions from individuals without a diagnosed mental health condition, but much less so at differentiating between the different diagnostic entities,” coinvestigator Thomas G. Schulze, MD, director of IPPG, said in an interview.

“An important caveat, however, is that the available sample sizes for bipolar disorder and major depressive disorder were smaller than those for schizophrenia, which makes a direct comparison between these difficult,” added Dr. Schulze, clinical professor in psychiatry and behavioral sciences at State University of New York, Syracuse.
 

More work remains

Although the study is thought to be the largest to date to examine lipid profiles associated with serious psychiatric illness, much work remains, Dr. Schulze noted.

“At this time, based on these first results, no clinical diagnostic test can be derived from these results,” he said.

He added that the development of reliable biomarkers based on lipidomic profiles would require large prospective randomized trials, complemented by observational studies assessing full lipidomic profiles across the lifespan.

Researchers also need to better understand the exact mechanism by which lipid alterations are associated with schizophrenia and other illnesses.

Physiologically, the investigated lipids have many additional functions, such as determining cell membrane structure and fluidity or cell-to-cell messaging.

Dr. Schulte noted that several lipid species may be involved in determining mechanisms important to synaptic function, such as cell membrane fluidity and vesicle release.

“As is commonly known, alterations in synaptic function underly many severe psychiatric disorders,” she said. “Changes in lipid species could theoretically be related to these synaptic alterations.”
 

A better marker needed

In a comment, Stephen Strakowski, MD, professor and vice chair of research in the department of psychiatry, Indiana University, Indianapolis and Evansville, noted that while the findings are interesting, they don’t really offer the kind of information clinicians who treat patients with serious mental illness need most.

“Do we need a marker to tell us if someone’s got a major mental illness compared to a healthy person?” asked Dr. Strakowski, who was not part of the study. “The answer to that is no. We already know how to do that.”

A truly useful marker would help clinicians differentiate between schizophrenia, bipolar disorder, major depression, or another serious mental illness, he said.

“That’s the marker that would be most helpful,” he added. “This can’t address that, but perhaps it could be a step to start designing a test for that.”

Dr. Strakowksi noted that the findings do not clarify whether the lipid profile found in patients with schizophrenia predates diagnosis or whether it is a result of the mental illness, an unrelated illness, or another factor that could be critical in treating patients.

However, he was quick to point out the limitations don’t diminish the importance of the study.

“It’s a large dataset that’s cross-national, cross-diagnostic that says there appears to be a signal here that there’s something about lipid profiles that may be independent of treatment that could be worth understanding,” Dr. Strakowksi said.

“It allows us to think about developing different models based on lipid profiles, and that’s important,” he added.

The study was funded by the National Key R&D Program of China, National One Thousand Foreign Experts Plan, Moscow Center for Innovative Technologies in Healthcare, European Union’s Horizon 2020 Research and Innovation Programme, NARSAD Young Investigator Grant, German Research Foundation, German Ministry for Education and Research, the Dr. Lisa Oehler Foundation, and the Munich Clinician Scientist Program. Dr. Schulze and Dr. Schulte reported no relevant financial relationships.

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

A specific lipid profile can identify patients with schizophrenia, possibly paving the way for the development of the first clinically useful diagnostic test for a severe psychiatric illness, new research suggests.

Although such a test remains a long way off, investigators said, the identification of the unique lipid signature is a critical first step. However, one expert noted that the lipid signature not accurately differentiating patients with schizophrenia from those with bipolar disorder (BD) and major depressive disorder (MDD) limits the findings’ applicability.

The profile includes 77 lipids identified from a large analysis of many different classes of lipid species. Lipids such as cholesterol and triglycerides made up only a small fraction of the classes assessed.

The investigators noted that some of the lipids in the profile associated with schizophrenia are involved in determining cell membrane structure and fluidity or cell-to-cell messaging, which could be important to synaptic function.

“These 77 lipids jointly constitute a lipidomic profile that discriminated between individuals with schizophrenia and individuals without a mental health diagnosis with very high accuracy,” investigator Eva C. Schulte, MD, PhD, of the Institute of Psychiatric Phenomics and Genomics (IPPG) and the department of psychiatry and psychotherapy at University Hospital of Ludwig-Maximilians-University, Munich, told this news organization.

“Of note, we did not see large profile differences between patients with a first psychotic episode who had only been treated for a few days and individuals on long-term antipsychotic therapy,” Dr. Schulte said.

The findings were published online in JAMA Psychiatry.
 

Detailed analysis

Lipid profiles in patients with psychiatric diagnoses have been reported previously, but those studies were small and did not identify a reliable signature independent of demographic and environmental factors.

For the current study, researchers analyzed blood plasma lipid levels from 980 individuals with severe psychiatric illness and 572 people without mental illness from three cohorts in China, Germany, Austria, and Russia.

The study sample included patients with schizophrenia (n = 478), BD (n = 184), and MDD (n = 256), as well as 104 patients with a first psychotic episode who had no long-term psychopharmacology use.

Results showed 77 lipids in 14 classes were significantly altered between participants with schizophrenia and the healthy control in all three cohorts.

The most prominent alterations at the lipid class level included increases in ceramide, triacylglyceride, and phosphatidylcholine and decreases in acylcarnitine and phosphatidylcholine plasmalogen (P < .05 for each cohort).

Schizophrenia-associated lipid differences were similar between patients with high and low symptom severity (P < .001), suggesting that the lipid alterations might represent a trait of the psychiatric disorder.
 

No medication effect

Most patients in the study received long-term antipsychotic medication, which has been shown previously to affect some plasma lipid compounds.

So, to assess a possible effect of medication, the investigators evaluated 13 patients with schizophrenia who were not medicated for at least 6 months prior to blood sample collection and the cohort of patients with a first psychotic episode who had been medicated for less than 1 week.

Comparison of the lipid intensity differences between the healthy controls group and either participants receiving medication or those who were not medicated revealed highly correlated alterations in both patient groups (P < .001).

“Taken together, these results indicate that the identified schizophrenia-associated alterations cannot be attributed to medication effects,” the investigators wrote.

Lipidome alterations in BPD and MDD, assessed in 184 and 256 individuals, respectively, were similar to those of schizophrenia but not identical.

Researchers isolated 97 lipids altered in the MDD cohorts and 47 in the BPD cohorts – with 30 and 28, respectively, overlapping with the schizophrenia-associated features and seven of the lipids found among all three disorders.

Although this was significantly more than expected by chance (P < .001), it was not strong enough to demonstrate a clear association, the investigators wrote.

“The profiles were very successful at differentiating individuals with severe mental health conditions from individuals without a diagnosed mental health condition, but much less so at differentiating between the different diagnostic entities,” coinvestigator Thomas G. Schulze, MD, director of IPPG, said in an interview.

“An important caveat, however, is that the available sample sizes for bipolar disorder and major depressive disorder were smaller than those for schizophrenia, which makes a direct comparison between these difficult,” added Dr. Schulze, clinical professor in psychiatry and behavioral sciences at State University of New York, Syracuse.
 

More work remains

Although the study is thought to be the largest to date to examine lipid profiles associated with serious psychiatric illness, much work remains, Dr. Schulze noted.

“At this time, based on these first results, no clinical diagnostic test can be derived from these results,” he said.

He added that the development of reliable biomarkers based on lipidomic profiles would require large prospective randomized trials, complemented by observational studies assessing full lipidomic profiles across the lifespan.

Researchers also need to better understand the exact mechanism by which lipid alterations are associated with schizophrenia and other illnesses.

Physiologically, the investigated lipids have many additional functions, such as determining cell membrane structure and fluidity or cell-to-cell messaging.

Dr. Schulte noted that several lipid species may be involved in determining mechanisms important to synaptic function, such as cell membrane fluidity and vesicle release.

“As is commonly known, alterations in synaptic function underly many severe psychiatric disorders,” she said. “Changes in lipid species could theoretically be related to these synaptic alterations.”
 

A better marker needed

In a comment, Stephen Strakowski, MD, professor and vice chair of research in the department of psychiatry, Indiana University, Indianapolis and Evansville, noted that while the findings are interesting, they don’t really offer the kind of information clinicians who treat patients with serious mental illness need most.

“Do we need a marker to tell us if someone’s got a major mental illness compared to a healthy person?” asked Dr. Strakowski, who was not part of the study. “The answer to that is no. We already know how to do that.”

A truly useful marker would help clinicians differentiate between schizophrenia, bipolar disorder, major depression, or another serious mental illness, he said.

“That’s the marker that would be most helpful,” he added. “This can’t address that, but perhaps it could be a step to start designing a test for that.”

Dr. Strakowksi noted that the findings do not clarify whether the lipid profile found in patients with schizophrenia predates diagnosis or whether it is a result of the mental illness, an unrelated illness, or another factor that could be critical in treating patients.

However, he was quick to point out the limitations don’t diminish the importance of the study.

“It’s a large dataset that’s cross-national, cross-diagnostic that says there appears to be a signal here that there’s something about lipid profiles that may be independent of treatment that could be worth understanding,” Dr. Strakowksi said.

“It allows us to think about developing different models based on lipid profiles, and that’s important,” he added.

The study was funded by the National Key R&D Program of China, National One Thousand Foreign Experts Plan, Moscow Center for Innovative Technologies in Healthcare, European Union’s Horizon 2020 Research and Innovation Programme, NARSAD Young Investigator Grant, German Research Foundation, German Ministry for Education and Research, the Dr. Lisa Oehler Foundation, and the Munich Clinician Scientist Program. Dr. Schulze and Dr. Schulte reported no relevant financial relationships.

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

A specific lipid profile can identify patients with schizophrenia, possibly paving the way for the development of the first clinically useful diagnostic test for a severe psychiatric illness, new research suggests.

Although such a test remains a long way off, investigators said, the identification of the unique lipid signature is a critical first step. However, one expert noted that the lipid signature not accurately differentiating patients with schizophrenia from those with bipolar disorder (BD) and major depressive disorder (MDD) limits the findings’ applicability.

The profile includes 77 lipids identified from a large analysis of many different classes of lipid species. Lipids such as cholesterol and triglycerides made up only a small fraction of the classes assessed.

The investigators noted that some of the lipids in the profile associated with schizophrenia are involved in determining cell membrane structure and fluidity or cell-to-cell messaging, which could be important to synaptic function.

“These 77 lipids jointly constitute a lipidomic profile that discriminated between individuals with schizophrenia and individuals without a mental health diagnosis with very high accuracy,” investigator Eva C. Schulte, MD, PhD, of the Institute of Psychiatric Phenomics and Genomics (IPPG) and the department of psychiatry and psychotherapy at University Hospital of Ludwig-Maximilians-University, Munich, told this news organization.

“Of note, we did not see large profile differences between patients with a first psychotic episode who had only been treated for a few days and individuals on long-term antipsychotic therapy,” Dr. Schulte said.

The findings were published online in JAMA Psychiatry.
 

Detailed analysis

Lipid profiles in patients with psychiatric diagnoses have been reported previously, but those studies were small and did not identify a reliable signature independent of demographic and environmental factors.

For the current study, researchers analyzed blood plasma lipid levels from 980 individuals with severe psychiatric illness and 572 people without mental illness from three cohorts in China, Germany, Austria, and Russia.

The study sample included patients with schizophrenia (n = 478), BD (n = 184), and MDD (n = 256), as well as 104 patients with a first psychotic episode who had no long-term psychopharmacology use.

Results showed 77 lipids in 14 classes were significantly altered between participants with schizophrenia and the healthy control in all three cohorts.

The most prominent alterations at the lipid class level included increases in ceramide, triacylglyceride, and phosphatidylcholine and decreases in acylcarnitine and phosphatidylcholine plasmalogen (P < .05 for each cohort).

Schizophrenia-associated lipid differences were similar between patients with high and low symptom severity (P < .001), suggesting that the lipid alterations might represent a trait of the psychiatric disorder.
 

No medication effect

Most patients in the study received long-term antipsychotic medication, which has been shown previously to affect some plasma lipid compounds.

So, to assess a possible effect of medication, the investigators evaluated 13 patients with schizophrenia who were not medicated for at least 6 months prior to blood sample collection and the cohort of patients with a first psychotic episode who had been medicated for less than 1 week.

Comparison of the lipid intensity differences between the healthy controls group and either participants receiving medication or those who were not medicated revealed highly correlated alterations in both patient groups (P < .001).

“Taken together, these results indicate that the identified schizophrenia-associated alterations cannot be attributed to medication effects,” the investigators wrote.

Lipidome alterations in BPD and MDD, assessed in 184 and 256 individuals, respectively, were similar to those of schizophrenia but not identical.

Researchers isolated 97 lipids altered in the MDD cohorts and 47 in the BPD cohorts – with 30 and 28, respectively, overlapping with the schizophrenia-associated features and seven of the lipids found among all three disorders.

Although this was significantly more than expected by chance (P < .001), it was not strong enough to demonstrate a clear association, the investigators wrote.

“The profiles were very successful at differentiating individuals with severe mental health conditions from individuals without a diagnosed mental health condition, but much less so at differentiating between the different diagnostic entities,” coinvestigator Thomas G. Schulze, MD, director of IPPG, said in an interview.

“An important caveat, however, is that the available sample sizes for bipolar disorder and major depressive disorder were smaller than those for schizophrenia, which makes a direct comparison between these difficult,” added Dr. Schulze, clinical professor in psychiatry and behavioral sciences at State University of New York, Syracuse.
 

More work remains

Although the study is thought to be the largest to date to examine lipid profiles associated with serious psychiatric illness, much work remains, Dr. Schulze noted.

“At this time, based on these first results, no clinical diagnostic test can be derived from these results,” he said.

He added that the development of reliable biomarkers based on lipidomic profiles would require large prospective randomized trials, complemented by observational studies assessing full lipidomic profiles across the lifespan.

Researchers also need to better understand the exact mechanism by which lipid alterations are associated with schizophrenia and other illnesses.

Physiologically, the investigated lipids have many additional functions, such as determining cell membrane structure and fluidity or cell-to-cell messaging.

Dr. Schulte noted that several lipid species may be involved in determining mechanisms important to synaptic function, such as cell membrane fluidity and vesicle release.

“As is commonly known, alterations in synaptic function underly many severe psychiatric disorders,” she said. “Changes in lipid species could theoretically be related to these synaptic alterations.”
 

A better marker needed

In a comment, Stephen Strakowski, MD, professor and vice chair of research in the department of psychiatry, Indiana University, Indianapolis and Evansville, noted that while the findings are interesting, they don’t really offer the kind of information clinicians who treat patients with serious mental illness need most.

“Do we need a marker to tell us if someone’s got a major mental illness compared to a healthy person?” asked Dr. Strakowski, who was not part of the study. “The answer to that is no. We already know how to do that.”

A truly useful marker would help clinicians differentiate between schizophrenia, bipolar disorder, major depression, or another serious mental illness, he said.

“That’s the marker that would be most helpful,” he added. “This can’t address that, but perhaps it could be a step to start designing a test for that.”

Dr. Strakowksi noted that the findings do not clarify whether the lipid profile found in patients with schizophrenia predates diagnosis or whether it is a result of the mental illness, an unrelated illness, or another factor that could be critical in treating patients.

However, he was quick to point out the limitations don’t diminish the importance of the study.

“It’s a large dataset that’s cross-national, cross-diagnostic that says there appears to be a signal here that there’s something about lipid profiles that may be independent of treatment that could be worth understanding,” Dr. Strakowksi said.

“It allows us to think about developing different models based on lipid profiles, and that’s important,” he added.

The study was funded by the National Key R&D Program of China, National One Thousand Foreign Experts Plan, Moscow Center for Innovative Technologies in Healthcare, European Union’s Horizon 2020 Research and Innovation Programme, NARSAD Young Investigator Grant, German Research Foundation, German Ministry for Education and Research, the Dr. Lisa Oehler Foundation, and the Munich Clinician Scientist Program. Dr. Schulze and Dr. Schulte reported no relevant financial relationships.

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

A network of neural connections is linked to six psychiatric disorders: schizophrenia, bipolar disorder (BD), depression, addiction, obsessive-compulsive disorder (OCD), and anxiety, new research shows.

Investigators used coordinate and lesion network mapping to assess whether there was a shared brain network common to multiple psychiatric disorders. In a meta-analysis of almost 200 studies encompassing more than 15,000 individuals, they found that atrophy coordinates across these six psychiatric conditions all mapped to a common brain network.

Moreover, lesion damage to this network in patients with penetrating head trauma correlated with the number of psychiatric illnesses that the patients were diagnosed with post trauma.

The findings have “bigger-picture potential implications,” lead author Joseph Taylor, MD, PhD, medical director of transcranial magnetic stimulation at Brigham and Women’s Hospital’s Center for Brain Circuit Therapeutics, Boston, told this news organization.

“In psychiatry, we talk about symptoms and define our disorders based on symptom checklists, which are fairly reliable but don’t have neurobiological underpinnings,” said Dr. Taylor, who is also an associate psychiatrist in Brigham’s department of psychiatry.

By contrast, “in neurology, we ask: ‘Where is the lesion?’ Studying brain networks could potentially help us diagnose and treat people with psychiatric illness more effectively, just as we treat neurological disorders,” he added.

The findings were published online in Nature Human Behavior.
 

Beyond symptom checklists

Dr. Taylor noted that, in the field of psychiatry, “we often study disorders in isolation,” such as generalized anxiety disorder and major depressive disorder.

“But what see clinically is that half of patients meet the criteria for more than one psychiatric disorder,” he said. “It can be difficult to diagnose and treat these patients, and there are worse treatment outcomes.”

There is also a “discrepancy” between how these disorders are studied (one at a time) and how patients are treated in clinic, Dr. Taylor noted. And there is increasing evidence that psychiatric disorders may share a common neurobiology.

This “highlights the possibility of potentially developing transdiagnostic treatments based on common neurobiology, not just symptom checklists,” Dr. Taylor said.

Prior work “has attempted to map abnormalities to common brain regions rather than to a common brain network,” the investigators wrote. Moreover, “prior studies have rarely tested specificity by comparing psychiatric disorders to other brain disorders.”

In the current study, the researchers used “morphometric brain lesion datasets coupled with a wiring diagram of the human brain to derive a convergent brain network for psychiatric illness.”

They analyzed four large published datasets. Dataset 1 was sourced from an activation likelihood estimation meta-analysis (ALE) of whole-brain voxel-based studies that compared patients with psychiatric disorders such as schizophrenia, BD, depression, addiction, OCD, and anxiety to healthy controls (n = 193 studies; 15,892 individuals in total).

Dataset 2 was drawn from published neuroimaging studies involving patients with Alzheimer’s disease (AD) and other neurodegenerative conditions (n = 72 studies). They reported coordinates regarding which patients with these disorders had more atrophy compared with control persons.

Dataset 3 was sourced from the Vietnam Head Injury study, which followed veterans with and those without penetrating head injuries (n = 194 veterans with injuries). Dataset 4 was sourced from published neurosurgical ablation coordinates for depression.
 

Shared neurobiology

Upon analyzing dataset 1, the researchers found decreased gray matter in the bilateral anterior insula, dorsal anterior cingulate cortex, dorsomedial prefrontal cortex, thalamus, amygdala, hippocampus, and parietal operculum – findings that are “consistent with prior work.”

However, fewer than 35% of the studies contributed to any single cluster; and no cluster was specific to psychiatric versus neurodegenerative coordinates (drawn from dataset 2).

On the other hand, coordinate network mapping yielded “more statistically robust” (P < .001) results, which were found in 85% of the studies. “Psychiatric atrophy coordinates were functionally connected to the same network of brain regions,” the researchers reported.

This network was defined by two types of connectivity, positive and negative.

“The topography of this transdiagnostic network was independent of the statistical threshold and specific to psychiatric (vs. neurodegenerative) disorders, with the strongest peak occurring in the posterior parietal cortex (Brodmann Area 7) near the intraparietal sulcus,” the investigators wrote.

When lesions from dataset 3 were overlaid onto the ALE map and the transdiagnostic network in order to evaluate whether damage to either map correlated with number of post-lesion psychiatric diagnosis, results showed no evidence of a correlation between psychiatric comorbidity and damage on the ALE map (Pearson r, 0.02; P = .766).

However, when the same approach was applied to the transdiagnostic network, a statistically significant correlation was found between psychiatric comorbidity and lesion damage (Pearson r, –0.21; P = .01). A multiple regression model showed that the transdiagnostic, but not the ALE, network “independently predicted the number of post-lesion psychiatric diagnoses” (P = .003 vs. P = .1), the investigators reported.

All four neurosurgical ablative targets for psychiatric disorders found on analysis of dataset 4 “intersected” and aligned with the transdiagnostic network.

“The study does not immediately impact clinical practice, but it would be helpful for practicing clinicians to know that psychiatric disorders commonly co-occur and might share common neurobiology and a convergent brain network,” Dr. Taylor said.

“Future work based on our findings could potentially influence clinical trials and clinical practice, especially in the area of brain stimulation,” he added.
 

‘Exciting new targets’

In a comment, Desmond Oathes, PhD, associate director, Center for Neuromodulation and Stress, University of Pennsylvania, Philadelphia, said the “next step in the science is to combine individual brain imaging, aka, ‘individualized connectomes,’ with these promising group maps to determine something meaningful at the individual patient level.”

Dr. Oathes, who is also a faculty clinician at the Center for the Treatment and Study of Anxiety and was not involved with the study, noted that an open question is whether the brain volume abnormalities/atrophy “can be changed with treatment and in what direction.”

A “strong take-home message from this paper is that brain volume measures from single coordinates are noisy as measures of psychiatric abnormality, whereas network effects seem to be especially sensitive for capturing these effects,” Dr. Oathes said.

The “abnormal networks across these disorders do not fit easily into well-known networks from healthy participants. However, they map well onto other databases relevant to psychiatric disorders and offer exciting new potential targets for prospective treatment studies,” he added.

The investigators received no specific funding for this work. Dr. Taylor reported no relevant financial relationships. Dr. Oathes reported no relevant financial relationships.

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

A network of neural connections is linked to six psychiatric disorders: schizophrenia, bipolar disorder (BD), depression, addiction, obsessive-compulsive disorder (OCD), and anxiety, new research shows.

Investigators used coordinate and lesion network mapping to assess whether there was a shared brain network common to multiple psychiatric disorders. In a meta-analysis of almost 200 studies encompassing more than 15,000 individuals, they found that atrophy coordinates across these six psychiatric conditions all mapped to a common brain network.

Moreover, lesion damage to this network in patients with penetrating head trauma correlated with the number of psychiatric illnesses that the patients were diagnosed with post trauma.

The findings have “bigger-picture potential implications,” lead author Joseph Taylor, MD, PhD, medical director of transcranial magnetic stimulation at Brigham and Women’s Hospital’s Center for Brain Circuit Therapeutics, Boston, told this news organization.

“In psychiatry, we talk about symptoms and define our disorders based on symptom checklists, which are fairly reliable but don’t have neurobiological underpinnings,” said Dr. Taylor, who is also an associate psychiatrist in Brigham’s department of psychiatry.

By contrast, “in neurology, we ask: ‘Where is the lesion?’ Studying brain networks could potentially help us diagnose and treat people with psychiatric illness more effectively, just as we treat neurological disorders,” he added.

The findings were published online in Nature Human Behavior.
 

Beyond symptom checklists

Dr. Taylor noted that, in the field of psychiatry, “we often study disorders in isolation,” such as generalized anxiety disorder and major depressive disorder.

“But what see clinically is that half of patients meet the criteria for more than one psychiatric disorder,” he said. “It can be difficult to diagnose and treat these patients, and there are worse treatment outcomes.”

There is also a “discrepancy” between how these disorders are studied (one at a time) and how patients are treated in clinic, Dr. Taylor noted. And there is increasing evidence that psychiatric disorders may share a common neurobiology.

This “highlights the possibility of potentially developing transdiagnostic treatments based on common neurobiology, not just symptom checklists,” Dr. Taylor said.

Prior work “has attempted to map abnormalities to common brain regions rather than to a common brain network,” the investigators wrote. Moreover, “prior studies have rarely tested specificity by comparing psychiatric disorders to other brain disorders.”

In the current study, the researchers used “morphometric brain lesion datasets coupled with a wiring diagram of the human brain to derive a convergent brain network for psychiatric illness.”

They analyzed four large published datasets. Dataset 1 was sourced from an activation likelihood estimation meta-analysis (ALE) of whole-brain voxel-based studies that compared patients with psychiatric disorders such as schizophrenia, BD, depression, addiction, OCD, and anxiety to healthy controls (n = 193 studies; 15,892 individuals in total).

Dataset 2 was drawn from published neuroimaging studies involving patients with Alzheimer’s disease (AD) and other neurodegenerative conditions (n = 72 studies). They reported coordinates regarding which patients with these disorders had more atrophy compared with control persons.

Dataset 3 was sourced from the Vietnam Head Injury study, which followed veterans with and those without penetrating head injuries (n = 194 veterans with injuries). Dataset 4 was sourced from published neurosurgical ablation coordinates for depression.
 

Shared neurobiology

Upon analyzing dataset 1, the researchers found decreased gray matter in the bilateral anterior insula, dorsal anterior cingulate cortex, dorsomedial prefrontal cortex, thalamus, amygdala, hippocampus, and parietal operculum – findings that are “consistent with prior work.”

However, fewer than 35% of the studies contributed to any single cluster; and no cluster was specific to psychiatric versus neurodegenerative coordinates (drawn from dataset 2).

On the other hand, coordinate network mapping yielded “more statistically robust” (P < .001) results, which were found in 85% of the studies. “Psychiatric atrophy coordinates were functionally connected to the same network of brain regions,” the researchers reported.

This network was defined by two types of connectivity, positive and negative.

“The topography of this transdiagnostic network was independent of the statistical threshold and specific to psychiatric (vs. neurodegenerative) disorders, with the strongest peak occurring in the posterior parietal cortex (Brodmann Area 7) near the intraparietal sulcus,” the investigators wrote.

When lesions from dataset 3 were overlaid onto the ALE map and the transdiagnostic network in order to evaluate whether damage to either map correlated with number of post-lesion psychiatric diagnosis, results showed no evidence of a correlation between psychiatric comorbidity and damage on the ALE map (Pearson r, 0.02; P = .766).

However, when the same approach was applied to the transdiagnostic network, a statistically significant correlation was found between psychiatric comorbidity and lesion damage (Pearson r, –0.21; P = .01). A multiple regression model showed that the transdiagnostic, but not the ALE, network “independently predicted the number of post-lesion psychiatric diagnoses” (P = .003 vs. P = .1), the investigators reported.

All four neurosurgical ablative targets for psychiatric disorders found on analysis of dataset 4 “intersected” and aligned with the transdiagnostic network.

“The study does not immediately impact clinical practice, but it would be helpful for practicing clinicians to know that psychiatric disorders commonly co-occur and might share common neurobiology and a convergent brain network,” Dr. Taylor said.

“Future work based on our findings could potentially influence clinical trials and clinical practice, especially in the area of brain stimulation,” he added.
 

‘Exciting new targets’

In a comment, Desmond Oathes, PhD, associate director, Center for Neuromodulation and Stress, University of Pennsylvania, Philadelphia, said the “next step in the science is to combine individual brain imaging, aka, ‘individualized connectomes,’ with these promising group maps to determine something meaningful at the individual patient level.”

Dr. Oathes, who is also a faculty clinician at the Center for the Treatment and Study of Anxiety and was not involved with the study, noted that an open question is whether the brain volume abnormalities/atrophy “can be changed with treatment and in what direction.”

A “strong take-home message from this paper is that brain volume measures from single coordinates are noisy as measures of psychiatric abnormality, whereas network effects seem to be especially sensitive for capturing these effects,” Dr. Oathes said.

The “abnormal networks across these disorders do not fit easily into well-known networks from healthy participants. However, they map well onto other databases relevant to psychiatric disorders and offer exciting new potential targets for prospective treatment studies,” he added.

The investigators received no specific funding for this work. Dr. Taylor reported no relevant financial relationships. Dr. Oathes reported no relevant financial relationships.

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

A network of neural connections is linked to six psychiatric disorders: schizophrenia, bipolar disorder (BD), depression, addiction, obsessive-compulsive disorder (OCD), and anxiety, new research shows.

Investigators used coordinate and lesion network mapping to assess whether there was a shared brain network common to multiple psychiatric disorders. In a meta-analysis of almost 200 studies encompassing more than 15,000 individuals, they found that atrophy coordinates across these six psychiatric conditions all mapped to a common brain network.

Moreover, lesion damage to this network in patients with penetrating head trauma correlated with the number of psychiatric illnesses that the patients were diagnosed with post trauma.

The findings have “bigger-picture potential implications,” lead author Joseph Taylor, MD, PhD, medical director of transcranial magnetic stimulation at Brigham and Women’s Hospital’s Center for Brain Circuit Therapeutics, Boston, told this news organization.

“In psychiatry, we talk about symptoms and define our disorders based on symptom checklists, which are fairly reliable but don’t have neurobiological underpinnings,” said Dr. Taylor, who is also an associate psychiatrist in Brigham’s department of psychiatry.

By contrast, “in neurology, we ask: ‘Where is the lesion?’ Studying brain networks could potentially help us diagnose and treat people with psychiatric illness more effectively, just as we treat neurological disorders,” he added.

The findings were published online in Nature Human Behavior.
 

Beyond symptom checklists

Dr. Taylor noted that, in the field of psychiatry, “we often study disorders in isolation,” such as generalized anxiety disorder and major depressive disorder.

“But what see clinically is that half of patients meet the criteria for more than one psychiatric disorder,” he said. “It can be difficult to diagnose and treat these patients, and there are worse treatment outcomes.”

There is also a “discrepancy” between how these disorders are studied (one at a time) and how patients are treated in clinic, Dr. Taylor noted. And there is increasing evidence that psychiatric disorders may share a common neurobiology.

This “highlights the possibility of potentially developing transdiagnostic treatments based on common neurobiology, not just symptom checklists,” Dr. Taylor said.

Prior work “has attempted to map abnormalities to common brain regions rather than to a common brain network,” the investigators wrote. Moreover, “prior studies have rarely tested specificity by comparing psychiatric disorders to other brain disorders.”

In the current study, the researchers used “morphometric brain lesion datasets coupled with a wiring diagram of the human brain to derive a convergent brain network for psychiatric illness.”

They analyzed four large published datasets. Dataset 1 was sourced from an activation likelihood estimation meta-analysis (ALE) of whole-brain voxel-based studies that compared patients with psychiatric disorders such as schizophrenia, BD, depression, addiction, OCD, and anxiety to healthy controls (n = 193 studies; 15,892 individuals in total).

Dataset 2 was drawn from published neuroimaging studies involving patients with Alzheimer’s disease (AD) and other neurodegenerative conditions (n = 72 studies). They reported coordinates regarding which patients with these disorders had more atrophy compared with control persons.

Dataset 3 was sourced from the Vietnam Head Injury study, which followed veterans with and those without penetrating head injuries (n = 194 veterans with injuries). Dataset 4 was sourced from published neurosurgical ablation coordinates for depression.
 

Shared neurobiology

Upon analyzing dataset 1, the researchers found decreased gray matter in the bilateral anterior insula, dorsal anterior cingulate cortex, dorsomedial prefrontal cortex, thalamus, amygdala, hippocampus, and parietal operculum – findings that are “consistent with prior work.”

However, fewer than 35% of the studies contributed to any single cluster; and no cluster was specific to psychiatric versus neurodegenerative coordinates (drawn from dataset 2).

On the other hand, coordinate network mapping yielded “more statistically robust” (P < .001) results, which were found in 85% of the studies. “Psychiatric atrophy coordinates were functionally connected to the same network of brain regions,” the researchers reported.

This network was defined by two types of connectivity, positive and negative.

“The topography of this transdiagnostic network was independent of the statistical threshold and specific to psychiatric (vs. neurodegenerative) disorders, with the strongest peak occurring in the posterior parietal cortex (Brodmann Area 7) near the intraparietal sulcus,” the investigators wrote.

When lesions from dataset 3 were overlaid onto the ALE map and the transdiagnostic network in order to evaluate whether damage to either map correlated with number of post-lesion psychiatric diagnosis, results showed no evidence of a correlation between psychiatric comorbidity and damage on the ALE map (Pearson r, 0.02; P = .766).

However, when the same approach was applied to the transdiagnostic network, a statistically significant correlation was found between psychiatric comorbidity and lesion damage (Pearson r, –0.21; P = .01). A multiple regression model showed that the transdiagnostic, but not the ALE, network “independently predicted the number of post-lesion psychiatric diagnoses” (P = .003 vs. P = .1), the investigators reported.

All four neurosurgical ablative targets for psychiatric disorders found on analysis of dataset 4 “intersected” and aligned with the transdiagnostic network.

“The study does not immediately impact clinical practice, but it would be helpful for practicing clinicians to know that psychiatric disorders commonly co-occur and might share common neurobiology and a convergent brain network,” Dr. Taylor said.

“Future work based on our findings could potentially influence clinical trials and clinical practice, especially in the area of brain stimulation,” he added.
 

‘Exciting new targets’

In a comment, Desmond Oathes, PhD, associate director, Center for Neuromodulation and Stress, University of Pennsylvania, Philadelphia, said the “next step in the science is to combine individual brain imaging, aka, ‘individualized connectomes,’ with these promising group maps to determine something meaningful at the individual patient level.”

Dr. Oathes, who is also a faculty clinician at the Center for the Treatment and Study of Anxiety and was not involved with the study, noted that an open question is whether the brain volume abnormalities/atrophy “can be changed with treatment and in what direction.”

A “strong take-home message from this paper is that brain volume measures from single coordinates are noisy as measures of psychiatric abnormality, whereas network effects seem to be especially sensitive for capturing these effects,” Dr. Oathes said.

The “abnormal networks across these disorders do not fit easily into well-known networks from healthy participants. However, they map well onto other databases relevant to psychiatric disorders and offer exciting new potential targets for prospective treatment studies,” he added.

The investigators received no specific funding for this work. Dr. Taylor reported no relevant financial relationships. Dr. Oathes reported no relevant financial relationships.

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

Amid growing concern among the public, psychiatrists, and other mental health professionals, the Canadian government is seeking to delay the legalization of its proposed medical assistance in dying (MAID) for mental illness law that is slated to pass on March 17.

Canada already has the largest number of deaths by MAID of any nation, with 10,064 in 2021, a 32% increase from 2020. With the addition of serious mental illness (SMI) as an eligible category, the country is on track to have the most liberal assisted-death policy in the world.

Concerns about the additional number of patients who could become eligible for MAID, and a lack of evidence-backed standards from disability rights groups, mental health advocates, First Nations leaders, psychiatrists, and other mental health providers, seems to have led the Canadian government to give the proposed law some sober second thought.

“Listening to experts and Canadians, we believe this date needs to be temporarily delayed,” said David Lametti, Canada’s minister of Justice and attorney general of Canada; Jean-Yves Duclos, minister of Health; and  Carolyn Bennett, minister of Mental Health and Addictions, in a Dec. 15, 2022, joint statement.

Canada’s Parliament – which approved the expansion – will now have to vote on whether to okay a pause on the legislation.

However, the Canadian Psychiatric Association has not been calling for a delay in the proposed legislation. In a November 2021 statement, the CPA  said it “does not take a position on the legality or morality of MAID,” but added that to deny MAID to people with mental illness was discriminatory, and that, as it was the law, it must be followed.

“CPA has not taken a position about MAID,” the association’s president Gary Chaimowitz, MBChB, told this news organization. “We know this is coming and our organization is trying to get its members ready for what will be most likely the ability of people with mental conditions to be able to request MAID,” said Dr. Chaimowitz, who is also head of forensic psychiatry at St. Joseph’s Healthcare and a professor of psychiatry at McMaster University, both in Hamilton, Ont.

Dr. Chaimowitz acknowledges that “a majority of psychiatrists do not want to be involved in anything to do with MAID.”

“The idea, certainly in psychiatry, is to get people well and we’ve been taught that people dying from a major mental disorder is something that we’re trained to prevent,” he added.
 

A ‘clinical option’

Assisted medical death is especially fraught in psychiatry, said Rebecca Brendel, MD, president of the American Psychiatric Association. She noted a 25-year life expectancy gap between people with SMI and those who do not have such conditions.

“As a profession we have very serious obligations to advance treatment so that a person with serious mental illness can live [a] full, productive, and healthy [life],” Dr. Brendel, associate director of the Center for Bioethics at Harvard Medical School in Boston, said in an interview.

Under the Canadian proposal, psychiatrists would be allowed to suggest MAID as a “clinical option.”

Harold Braswell, PhD, a fellow with The Hastings Center, a bioethics research institute, calls that problematic.

“It’s not neutral to suggest to someone that it would be theoretically reasonable to end their lives,” Dr. Braswell, associate professor at the Albert Gnaegi Center for Health Care Ethics at Saint Louis University, told this news organization.

It also creates a double standard in the treatment of suicidal ideation, in which suicide prevention is absolute for some, but encouraging it as a possibility for others, he added.  

“To have that come from an authority figure is something that’s very harsh and, in my opinion, very potentially destructive,” especially for vulnerable groups, like First Nations people, who already have elevated rates of suicide, said Dr. Braswell.
 

Fierce debate

Since 2016, Canada has allowed MAID for medical conditions and diseases that will not improve and in cases where the evidence shows that medical providers can accurately predict the condition will not improve.

However, in 2019, a Quebec court ruled that the law unconstitutionally barred euthanasia in people who were not terminally ill. In March 2021, Canada’s criminal code was amended to allow MAID for people whose natural death was not “reasonably foreseeable,” but it excluded SMI for a period of 2 years, ending in March 2023.

The 2-year stay was intended to allow for study and to give mental health providers and MAID assessors time to develop standards.

The federal government charged a 12-member expert panel with determining how to safely allow MAID for SMI. In its final report released in May 2022 it recommended that standards be developed. 

The panel acknowledged that for many conditions it may be impossible to make predictions about whether an individual might improve. However, it did not mention SMI.

In those cases, when MAID is requested, “establishing incurability and irreversibility on the basis of the evolution and response to past interventions is necessary,” the panel noted, adding that these are the criteria used by psychiatrists assessing euthanasia requests in the Netherlands and Belgium.

But the notion that mental illness can be irremediable has been fiercely debated.

Soon after the expert report was released, the Center for Addiction and Mental Health in Toronto noted on its website that there are currently  “no agreed upon standards for psychiatrists or other health care practitioners to use to determine if a person’s mental illness is ‘grievous and irremediable’ for the purposes of MAID.” 

Dr. Chaimowitz acknowledged that “there’s no agreed-upon definition of incurability” in mental illness. Some psychiatrists “will argue that there’s always another treatment that can be attempted,” he said, adding that there has been a lack of consensus on irremediability among CPA members.
 

Protecting vulnerable populations

Matt Wynia, MD, MPH, FACP, director of the Center for Bioethics and Humanities at the University of Colorado at Denver, Aurora, said the question of irremediability is crucial. “Most people with mental illness do get better, especially if they’re in treatment,” Dr. Wynia said.

For MAID assessors it may be difficult to know when someone has tried all possible treatments, especially given the wide array of options, including psychedelics, said Dr. Wynia.

Dr. Braswell said there is not enough evidence that mental illness is incurable. With SMI, “there’s a lot more potential for the causes of the individual’s suffering to be ameliorated. By offering MAID, you’re going to kill people who might have been able to get out of this through other nonlethal means.”

Currently, MAID is provided for an irremediable medical condition, “in other words, a condition that will not improve and that we can predict will not improve,” said Karandeep S. Gaind, MD, chief of psychiatry at Toronto’s Humber River Hospital and physician chair of the hospital’s MAID team.

“If that’s the premise, then I think we cannot provide MAID for sole mental illness,” Dr. Gaind said. “Because we can’t honestly make those predictions” with mental illness, he added.

Dr. Gaind does not support MAID for mental illness and believes that it will put the vulnerable – including those living in poverty – at particular risk.

With the proposed expansion, MAID is “now becoming something which is being sought as a way to escape a painful life rather than to avoid a painful death,” said Dr. Gaind, who is also a past president of the CPA.

One member of the federal government’s expert panel – Ellen Cohen, who had a psychiatric condition – wrote in The Globe and Mail that she quit early on when it became apparent that the panel was not seriously considering her own experiences or the possibility that poverty and lack of access to care or social supports could strongly influence a request for MAID.
 

Social determinants of suffering

People with mental illness often are without homes, have substance use disorders, have been stigmatized and discriminated against, and have poor social supports, said Dr. Wynia. “You worry that it’s all of those things that are making them want to end their lives,” he said.

The Daily Mail ran a story in December 2022 about a 65-year-old Canadian who said he’d applied for MAID solely because of fears that his disability benefits for various chronic health conditions were being cut off and that he didn’t want to live in poverty.

A 51-year-old Ontario woman with multiple chemical sensitivities was granted MAID after she said she could not find housing that could keep her safe, according to an August report by CTV News.

Tarek Rajji, MD, chief of the Adult Neurodevelopment and Geriatric Psychiatry Division at CAMH, said social determinants of health need to be considered in standards created to guide MAID for mental illness.

“We’re very mindful of the fact that the suffering, that is, the grievousness that the person is living with, in the context of mental illness, many times is due to the social determinants of their illness and the social determinants of their suffering,” Dr. Rajji said.

Many are also concerned that it will be difficult to separate out suicidality from sheer hopelessness.

The CPA has advised a group that’s working on developing guidelines for MAID in SMI and is also developing a curriculum for mental health providers, Dr. Chaimowitz said. As part of that, there will be a process to ensure that someone who is actively suicidal is not granted MAID.

“I do not believe that it’s contemplated that MAID is going to accelerate or facilitate suicidal ideation,” he said. Someone who is suicidal will be referred to treatment, said Dr. Chaimowitz.

“People with depression often feel hopeless,” and may refuse treatments that have worked in the past, countered Dr. Gaind. Some of his patients “are absolutely convinced that nothing will help,” he said.
 

Troublesome cases

The expert panel said in its final report that “it is not possible to provide fixed rules for how many attempts at interventions, how many types of interventions, and over how much time,” are necessary to establish “irreversibility” of mental illness.

Dr. Chaimowitz said MAID will not be offered to anyone “refusing treatment for their condition without any good reason.” They will be “unlikely to meet criteria for incurable,” as they will have needed to avail themselves of the array of treatments available, he said. 

That would be similar to rules in Belgium and the Netherlands, which allow euthanasia for psychiatric conditions. 

An estimated 100-300 psychiatric patients receive euthanasia each year in those countries, according to a 2021 commentary in Psychiatric Times (Jun 7;38[6]) by Mark S. Komrad, MD, a Towson, Maryland-based psychiatrist.

There are still troublesome cases. 

As previously reported by this news organization, many in Belgium were distressed recently at the news that a 23-year-old woman who had survived a terrorist attack, Shanti De Corte, requested and was granted euthanasia.

As the deadline for implementation of MAID grew closer, calls for delay grew louder, especially given the lack of concrete standards for providers.

During the waning months of 2022, Dr. Gaind – who said he was suspended from CPA for “unprofessional interactions” and allegedly misrepresenting CPA’s processes and governance matters – announced the launch of a new organization, the Society of Canadian Psychiatry, in November calling for a delay in MAID of at least 1 year so that evidence-based safeguards could be implemented. The petition has been signed by more than 200 psychiatrists, along with several dozen physicians, MAID assessors, and individuals with mental illness and family members.

The Association of Chairs of Psychiatry in Canada, the Canadian Association for Suicide Prevention, the Council of Canadians with Disabilities, a group of indigenous leaders, and the Ontario Association for ACT and FACT, psychiatrists who provide care to individuals with severe mental illness, among other groups, joined the call for a delay.

In its December announcement, the Canadian federal ministers said a factor in seeking a delay was that standards guiding clinicians would not be delivered until at least February – too close to when applications would be opened.

Upon hearing about the federal government’s intentions, the chair of the expert panel, Mona Gupta, MD, told The Canadian Press that she did not think it was necessary to put off implementation because necessary safeguards were already in place.

Dr. Chaimowitz awaits the standards but is optimistic that for mental illness, “the process will be tightly controlled, closely monitored, and open to scrutiny,” he said.

Dr. Braswell is not convinced. The concern is that adding people with mental illness is “going to overload the capacity of the government to monitor this practice,” he said.
 

Is the United States next?

Although Canada and the United States share a border, it’s unlikely that U.S. states will allow aid in dying for nonterminal illness, much less for psychiatric conditions any time soon, said Dr. Braswell and others.

Ten states – California, Colorado, Hawaii, Maine, Montana, New Jersey, New Mexico, Oregon, Vermont, and Washington – have laws allowing assistance in dying, but for terminal illness only.

In 2016, the APA adopted the American Medical Association policy on medical euthanasia, stating, “that a psychiatrist should not prescribe or administer any intervention to a nonterminally ill person for the purpose of causing death.”

Dr. Brendel said the field is acutely aware that people with mental illness do suffer, but that more work needs to be done – and is being done – on “distinguishing wishes to hasten death or end one’s life from these historical or traditional notions that any premature death is a suicide.”

There is also increasing discussion within the medical community, not just psychiatry, about a physician’s duty to relieve suffering, said Dr. Wynia. “There’s debate basically about whether we stand for preserving life essentially at all costs and never being involved in the taking of life, or whether we stand for reduction of suffering and being the advocate for the patients that we serve,” he said.

“Those are both legitimate,” said Dr. Wynia, adding, “there are good reasons to want both of those to be true.”

“I suspect that 20 years from now we will still be having conversations about how physicians, how psychiatrists ought to participate in preserving life and in shepherding death,” said Dr. Brendel.

But to Dr. Gaind, the debate is not just esoteric, it’s a soon-to-be reality in Canada. “When we’re providing death to people who aren’t dying, to me that’s like providing what amounts to a wrongful death,” he said.

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

Amid growing concern among the public, psychiatrists, and other mental health professionals, the Canadian government is seeking to delay the legalization of its proposed medical assistance in dying (MAID) for mental illness law that is slated to pass on March 17.

Canada already has the largest number of deaths by MAID of any nation, with 10,064 in 2021, a 32% increase from 2020. With the addition of serious mental illness (SMI) as an eligible category, the country is on track to have the most liberal assisted-death policy in the world.

Concerns about the additional number of patients who could become eligible for MAID, and a lack of evidence-backed standards from disability rights groups, mental health advocates, First Nations leaders, psychiatrists, and other mental health providers, seems to have led the Canadian government to give the proposed law some sober second thought.

“Listening to experts and Canadians, we believe this date needs to be temporarily delayed,” said David Lametti, Canada’s minister of Justice and attorney general of Canada; Jean-Yves Duclos, minister of Health; and  Carolyn Bennett, minister of Mental Health and Addictions, in a Dec. 15, 2022, joint statement.

Canada’s Parliament – which approved the expansion – will now have to vote on whether to okay a pause on the legislation.

However, the Canadian Psychiatric Association has not been calling for a delay in the proposed legislation. In a November 2021 statement, the CPA  said it “does not take a position on the legality or morality of MAID,” but added that to deny MAID to people with mental illness was discriminatory, and that, as it was the law, it must be followed.

“CPA has not taken a position about MAID,” the association’s president Gary Chaimowitz, MBChB, told this news organization. “We know this is coming and our organization is trying to get its members ready for what will be most likely the ability of people with mental conditions to be able to request MAID,” said Dr. Chaimowitz, who is also head of forensic psychiatry at St. Joseph’s Healthcare and a professor of psychiatry at McMaster University, both in Hamilton, Ont.

Dr. Chaimowitz acknowledges that “a majority of psychiatrists do not want to be involved in anything to do with MAID.”

“The idea, certainly in psychiatry, is to get people well and we’ve been taught that people dying from a major mental disorder is something that we’re trained to prevent,” he added.
 

A ‘clinical option’

Assisted medical death is especially fraught in psychiatry, said Rebecca Brendel, MD, president of the American Psychiatric Association. She noted a 25-year life expectancy gap between people with SMI and those who do not have such conditions.

“As a profession we have very serious obligations to advance treatment so that a person with serious mental illness can live [a] full, productive, and healthy [life],” Dr. Brendel, associate director of the Center for Bioethics at Harvard Medical School in Boston, said in an interview.

Under the Canadian proposal, psychiatrists would be allowed to suggest MAID as a “clinical option.”

Harold Braswell, PhD, a fellow with The Hastings Center, a bioethics research institute, calls that problematic.

“It’s not neutral to suggest to someone that it would be theoretically reasonable to end their lives,” Dr. Braswell, associate professor at the Albert Gnaegi Center for Health Care Ethics at Saint Louis University, told this news organization.

It also creates a double standard in the treatment of suicidal ideation, in which suicide prevention is absolute for some, but encouraging it as a possibility for others, he added.  

“To have that come from an authority figure is something that’s very harsh and, in my opinion, very potentially destructive,” especially for vulnerable groups, like First Nations people, who already have elevated rates of suicide, said Dr. Braswell.
 

Fierce debate

Since 2016, Canada has allowed MAID for medical conditions and diseases that will not improve and in cases where the evidence shows that medical providers can accurately predict the condition will not improve.

However, in 2019, a Quebec court ruled that the law unconstitutionally barred euthanasia in people who were not terminally ill. In March 2021, Canada’s criminal code was amended to allow MAID for people whose natural death was not “reasonably foreseeable,” but it excluded SMI for a period of 2 years, ending in March 2023.

The 2-year stay was intended to allow for study and to give mental health providers and MAID assessors time to develop standards.

The federal government charged a 12-member expert panel with determining how to safely allow MAID for SMI. In its final report released in May 2022 it recommended that standards be developed. 

The panel acknowledged that for many conditions it may be impossible to make predictions about whether an individual might improve. However, it did not mention SMI.

In those cases, when MAID is requested, “establishing incurability and irreversibility on the basis of the evolution and response to past interventions is necessary,” the panel noted, adding that these are the criteria used by psychiatrists assessing euthanasia requests in the Netherlands and Belgium.

But the notion that mental illness can be irremediable has been fiercely debated.

Soon after the expert report was released, the Center for Addiction and Mental Health in Toronto noted on its website that there are currently  “no agreed upon standards for psychiatrists or other health care practitioners to use to determine if a person’s mental illness is ‘grievous and irremediable’ for the purposes of MAID.” 

Dr. Chaimowitz acknowledged that “there’s no agreed-upon definition of incurability” in mental illness. Some psychiatrists “will argue that there’s always another treatment that can be attempted,” he said, adding that there has been a lack of consensus on irremediability among CPA members.
 

Protecting vulnerable populations

Matt Wynia, MD, MPH, FACP, director of the Center for Bioethics and Humanities at the University of Colorado at Denver, Aurora, said the question of irremediability is crucial. “Most people with mental illness do get better, especially if they’re in treatment,” Dr. Wynia said.

For MAID assessors it may be difficult to know when someone has tried all possible treatments, especially given the wide array of options, including psychedelics, said Dr. Wynia.

Dr. Braswell said there is not enough evidence that mental illness is incurable. With SMI, “there’s a lot more potential for the causes of the individual’s suffering to be ameliorated. By offering MAID, you’re going to kill people who might have been able to get out of this through other nonlethal means.”

Currently, MAID is provided for an irremediable medical condition, “in other words, a condition that will not improve and that we can predict will not improve,” said Karandeep S. Gaind, MD, chief of psychiatry at Toronto’s Humber River Hospital and physician chair of the hospital’s MAID team.

“If that’s the premise, then I think we cannot provide MAID for sole mental illness,” Dr. Gaind said. “Because we can’t honestly make those predictions” with mental illness, he added.

Dr. Gaind does not support MAID for mental illness and believes that it will put the vulnerable – including those living in poverty – at particular risk.

With the proposed expansion, MAID is “now becoming something which is being sought as a way to escape a painful life rather than to avoid a painful death,” said Dr. Gaind, who is also a past president of the CPA.

One member of the federal government’s expert panel – Ellen Cohen, who had a psychiatric condition – wrote in The Globe and Mail that she quit early on when it became apparent that the panel was not seriously considering her own experiences or the possibility that poverty and lack of access to care or social supports could strongly influence a request for MAID.
 

Social determinants of suffering

People with mental illness often are without homes, have substance use disorders, have been stigmatized and discriminated against, and have poor social supports, said Dr. Wynia. “You worry that it’s all of those things that are making them want to end their lives,” he said.

The Daily Mail ran a story in December 2022 about a 65-year-old Canadian who said he’d applied for MAID solely because of fears that his disability benefits for various chronic health conditions were being cut off and that he didn’t want to live in poverty.

A 51-year-old Ontario woman with multiple chemical sensitivities was granted MAID after she said she could not find housing that could keep her safe, according to an August report by CTV News.

Tarek Rajji, MD, chief of the Adult Neurodevelopment and Geriatric Psychiatry Division at CAMH, said social determinants of health need to be considered in standards created to guide MAID for mental illness.

“We’re very mindful of the fact that the suffering, that is, the grievousness that the person is living with, in the context of mental illness, many times is due to the social determinants of their illness and the social determinants of their suffering,” Dr. Rajji said.

Many are also concerned that it will be difficult to separate out suicidality from sheer hopelessness.

The CPA has advised a group that’s working on developing guidelines for MAID in SMI and is also developing a curriculum for mental health providers, Dr. Chaimowitz said. As part of that, there will be a process to ensure that someone who is actively suicidal is not granted MAID.

“I do not believe that it’s contemplated that MAID is going to accelerate or facilitate suicidal ideation,” he said. Someone who is suicidal will be referred to treatment, said Dr. Chaimowitz.

“People with depression often feel hopeless,” and may refuse treatments that have worked in the past, countered Dr. Gaind. Some of his patients “are absolutely convinced that nothing will help,” he said.
 

Troublesome cases

The expert panel said in its final report that “it is not possible to provide fixed rules for how many attempts at interventions, how many types of interventions, and over how much time,” are necessary to establish “irreversibility” of mental illness.

Dr. Chaimowitz said MAID will not be offered to anyone “refusing treatment for their condition without any good reason.” They will be “unlikely to meet criteria for incurable,” as they will have needed to avail themselves of the array of treatments available, he said. 

That would be similar to rules in Belgium and the Netherlands, which allow euthanasia for psychiatric conditions. 

An estimated 100-300 psychiatric patients receive euthanasia each year in those countries, according to a 2021 commentary in Psychiatric Times (Jun 7;38[6]) by Mark S. Komrad, MD, a Towson, Maryland-based psychiatrist.

There are still troublesome cases. 

As previously reported by this news organization, many in Belgium were distressed recently at the news that a 23-year-old woman who had survived a terrorist attack, Shanti De Corte, requested and was granted euthanasia.

As the deadline for implementation of MAID grew closer, calls for delay grew louder, especially given the lack of concrete standards for providers.

During the waning months of 2022, Dr. Gaind – who said he was suspended from CPA for “unprofessional interactions” and allegedly misrepresenting CPA’s processes and governance matters – announced the launch of a new organization, the Society of Canadian Psychiatry, in November calling for a delay in MAID of at least 1 year so that evidence-based safeguards could be implemented. The petition has been signed by more than 200 psychiatrists, along with several dozen physicians, MAID assessors, and individuals with mental illness and family members.

The Association of Chairs of Psychiatry in Canada, the Canadian Association for Suicide Prevention, the Council of Canadians with Disabilities, a group of indigenous leaders, and the Ontario Association for ACT and FACT, psychiatrists who provide care to individuals with severe mental illness, among other groups, joined the call for a delay.

In its December announcement, the Canadian federal ministers said a factor in seeking a delay was that standards guiding clinicians would not be delivered until at least February – too close to when applications would be opened.

Upon hearing about the federal government’s intentions, the chair of the expert panel, Mona Gupta, MD, told The Canadian Press that she did not think it was necessary to put off implementation because necessary safeguards were already in place.

Dr. Chaimowitz awaits the standards but is optimistic that for mental illness, “the process will be tightly controlled, closely monitored, and open to scrutiny,” he said.

Dr. Braswell is not convinced. The concern is that adding people with mental illness is “going to overload the capacity of the government to monitor this practice,” he said.
 

Is the United States next?

Although Canada and the United States share a border, it’s unlikely that U.S. states will allow aid in dying for nonterminal illness, much less for psychiatric conditions any time soon, said Dr. Braswell and others.

Ten states – California, Colorado, Hawaii, Maine, Montana, New Jersey, New Mexico, Oregon, Vermont, and Washington – have laws allowing assistance in dying, but for terminal illness only.

In 2016, the APA adopted the American Medical Association policy on medical euthanasia, stating, “that a psychiatrist should not prescribe or administer any intervention to a nonterminally ill person for the purpose of causing death.”

Dr. Brendel said the field is acutely aware that people with mental illness do suffer, but that more work needs to be done – and is being done – on “distinguishing wishes to hasten death or end one’s life from these historical or traditional notions that any premature death is a suicide.”

There is also increasing discussion within the medical community, not just psychiatry, about a physician’s duty to relieve suffering, said Dr. Wynia. “There’s debate basically about whether we stand for preserving life essentially at all costs and never being involved in the taking of life, or whether we stand for reduction of suffering and being the advocate for the patients that we serve,” he said.

“Those are both legitimate,” said Dr. Wynia, adding, “there are good reasons to want both of those to be true.”

“I suspect that 20 years from now we will still be having conversations about how physicians, how psychiatrists ought to participate in preserving life and in shepherding death,” said Dr. Brendel.

But to Dr. Gaind, the debate is not just esoteric, it’s a soon-to-be reality in Canada. “When we’re providing death to people who aren’t dying, to me that’s like providing what amounts to a wrongful death,” he said.

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

Amid growing concern among the public, psychiatrists, and other mental health professionals, the Canadian government is seeking to delay the legalization of its proposed medical assistance in dying (MAID) for mental illness law that is slated to pass on March 17.

Canada already has the largest number of deaths by MAID of any nation, with 10,064 in 2021, a 32% increase from 2020. With the addition of serious mental illness (SMI) as an eligible category, the country is on track to have the most liberal assisted-death policy in the world.

Concerns about the additional number of patients who could become eligible for MAID, and a lack of evidence-backed standards from disability rights groups, mental health advocates, First Nations leaders, psychiatrists, and other mental health providers, seems to have led the Canadian government to give the proposed law some sober second thought.

“Listening to experts and Canadians, we believe this date needs to be temporarily delayed,” said David Lametti, Canada’s minister of Justice and attorney general of Canada; Jean-Yves Duclos, minister of Health; and  Carolyn Bennett, minister of Mental Health and Addictions, in a Dec. 15, 2022, joint statement.

Canada’s Parliament – which approved the expansion – will now have to vote on whether to okay a pause on the legislation.

However, the Canadian Psychiatric Association has not been calling for a delay in the proposed legislation. In a November 2021 statement, the CPA  said it “does not take a position on the legality or morality of MAID,” but added that to deny MAID to people with mental illness was discriminatory, and that, as it was the law, it must be followed.

“CPA has not taken a position about MAID,” the association’s president Gary Chaimowitz, MBChB, told this news organization. “We know this is coming and our organization is trying to get its members ready for what will be most likely the ability of people with mental conditions to be able to request MAID,” said Dr. Chaimowitz, who is also head of forensic psychiatry at St. Joseph’s Healthcare and a professor of psychiatry at McMaster University, both in Hamilton, Ont.

Dr. Chaimowitz acknowledges that “a majority of psychiatrists do not want to be involved in anything to do with MAID.”

“The idea, certainly in psychiatry, is to get people well and we’ve been taught that people dying from a major mental disorder is something that we’re trained to prevent,” he added.
 

A ‘clinical option’

Assisted medical death is especially fraught in psychiatry, said Rebecca Brendel, MD, president of the American Psychiatric Association. She noted a 25-year life expectancy gap between people with SMI and those who do not have such conditions.

“As a profession we have very serious obligations to advance treatment so that a person with serious mental illness can live [a] full, productive, and healthy [life],” Dr. Brendel, associate director of the Center for Bioethics at Harvard Medical School in Boston, said in an interview.

Under the Canadian proposal, psychiatrists would be allowed to suggest MAID as a “clinical option.”

Harold Braswell, PhD, a fellow with The Hastings Center, a bioethics research institute, calls that problematic.

“It’s not neutral to suggest to someone that it would be theoretically reasonable to end their lives,” Dr. Braswell, associate professor at the Albert Gnaegi Center for Health Care Ethics at Saint Louis University, told this news organization.

It also creates a double standard in the treatment of suicidal ideation, in which suicide prevention is absolute for some, but encouraging it as a possibility for others, he added.  

“To have that come from an authority figure is something that’s very harsh and, in my opinion, very potentially destructive,” especially for vulnerable groups, like First Nations people, who already have elevated rates of suicide, said Dr. Braswell.
 

Fierce debate

Since 2016, Canada has allowed MAID for medical conditions and diseases that will not improve and in cases where the evidence shows that medical providers can accurately predict the condition will not improve.

However, in 2019, a Quebec court ruled that the law unconstitutionally barred euthanasia in people who were not terminally ill. In March 2021, Canada’s criminal code was amended to allow MAID for people whose natural death was not “reasonably foreseeable,” but it excluded SMI for a period of 2 years, ending in March 2023.

The 2-year stay was intended to allow for study and to give mental health providers and MAID assessors time to develop standards.

The federal government charged a 12-member expert panel with determining how to safely allow MAID for SMI. In its final report released in May 2022 it recommended that standards be developed. 

The panel acknowledged that for many conditions it may be impossible to make predictions about whether an individual might improve. However, it did not mention SMI.

In those cases, when MAID is requested, “establishing incurability and irreversibility on the basis of the evolution and response to past interventions is necessary,” the panel noted, adding that these are the criteria used by psychiatrists assessing euthanasia requests in the Netherlands and Belgium.

But the notion that mental illness can be irremediable has been fiercely debated.

Soon after the expert report was released, the Center for Addiction and Mental Health in Toronto noted on its website that there are currently  “no agreed upon standards for psychiatrists or other health care practitioners to use to determine if a person’s mental illness is ‘grievous and irremediable’ for the purposes of MAID.” 

Dr. Chaimowitz acknowledged that “there’s no agreed-upon definition of incurability” in mental illness. Some psychiatrists “will argue that there’s always another treatment that can be attempted,” he said, adding that there has been a lack of consensus on irremediability among CPA members.
 

Protecting vulnerable populations

Matt Wynia, MD, MPH, FACP, director of the Center for Bioethics and Humanities at the University of Colorado at Denver, Aurora, said the question of irremediability is crucial. “Most people with mental illness do get better, especially if they’re in treatment,” Dr. Wynia said.

For MAID assessors it may be difficult to know when someone has tried all possible treatments, especially given the wide array of options, including psychedelics, said Dr. Wynia.

Dr. Braswell said there is not enough evidence that mental illness is incurable. With SMI, “there’s a lot more potential for the causes of the individual’s suffering to be ameliorated. By offering MAID, you’re going to kill people who might have been able to get out of this through other nonlethal means.”

Currently, MAID is provided for an irremediable medical condition, “in other words, a condition that will not improve and that we can predict will not improve,” said Karandeep S. Gaind, MD, chief of psychiatry at Toronto’s Humber River Hospital and physician chair of the hospital’s MAID team.

“If that’s the premise, then I think we cannot provide MAID for sole mental illness,” Dr. Gaind said. “Because we can’t honestly make those predictions” with mental illness, he added.

Dr. Gaind does not support MAID for mental illness and believes that it will put the vulnerable – including those living in poverty – at particular risk.

With the proposed expansion, MAID is “now becoming something which is being sought as a way to escape a painful life rather than to avoid a painful death,” said Dr. Gaind, who is also a past president of the CPA.

One member of the federal government’s expert panel – Ellen Cohen, who had a psychiatric condition – wrote in The Globe and Mail that she quit early on when it became apparent that the panel was not seriously considering her own experiences or the possibility that poverty and lack of access to care or social supports could strongly influence a request for MAID.
 

Social determinants of suffering

People with mental illness often are without homes, have substance use disorders, have been stigmatized and discriminated against, and have poor social supports, said Dr. Wynia. “You worry that it’s all of those things that are making them want to end their lives,” he said.

The Daily Mail ran a story in December 2022 about a 65-year-old Canadian who said he’d applied for MAID solely because of fears that his disability benefits for various chronic health conditions were being cut off and that he didn’t want to live in poverty.

A 51-year-old Ontario woman with multiple chemical sensitivities was granted MAID after she said she could not find housing that could keep her safe, according to an August report by CTV News.

Tarek Rajji, MD, chief of the Adult Neurodevelopment and Geriatric Psychiatry Division at CAMH, said social determinants of health need to be considered in standards created to guide MAID for mental illness.

“We’re very mindful of the fact that the suffering, that is, the grievousness that the person is living with, in the context of mental illness, many times is due to the social determinants of their illness and the social determinants of their suffering,” Dr. Rajji said.

Many are also concerned that it will be difficult to separate out suicidality from sheer hopelessness.

The CPA has advised a group that’s working on developing guidelines for MAID in SMI and is also developing a curriculum for mental health providers, Dr. Chaimowitz said. As part of that, there will be a process to ensure that someone who is actively suicidal is not granted MAID.

“I do not believe that it’s contemplated that MAID is going to accelerate or facilitate suicidal ideation,” he said. Someone who is suicidal will be referred to treatment, said Dr. Chaimowitz.

“People with depression often feel hopeless,” and may refuse treatments that have worked in the past, countered Dr. Gaind. Some of his patients “are absolutely convinced that nothing will help,” he said.
 

Troublesome cases

The expert panel said in its final report that “it is not possible to provide fixed rules for how many attempts at interventions, how many types of interventions, and over how much time,” are necessary to establish “irreversibility” of mental illness.

Dr. Chaimowitz said MAID will not be offered to anyone “refusing treatment for their condition without any good reason.” They will be “unlikely to meet criteria for incurable,” as they will have needed to avail themselves of the array of treatments available, he said. 

That would be similar to rules in Belgium and the Netherlands, which allow euthanasia for psychiatric conditions. 

An estimated 100-300 psychiatric patients receive euthanasia each year in those countries, according to a 2021 commentary in Psychiatric Times (Jun 7;38[6]) by Mark S. Komrad, MD, a Towson, Maryland-based psychiatrist.

There are still troublesome cases. 

As previously reported by this news organization, many in Belgium were distressed recently at the news that a 23-year-old woman who had survived a terrorist attack, Shanti De Corte, requested and was granted euthanasia.

As the deadline for implementation of MAID grew closer, calls for delay grew louder, especially given the lack of concrete standards for providers.

During the waning months of 2022, Dr. Gaind – who said he was suspended from CPA for “unprofessional interactions” and allegedly misrepresenting CPA’s processes and governance matters – announced the launch of a new organization, the Society of Canadian Psychiatry, in November calling for a delay in MAID of at least 1 year so that evidence-based safeguards could be implemented. The petition has been signed by more than 200 psychiatrists, along with several dozen physicians, MAID assessors, and individuals with mental illness and family members.

The Association of Chairs of Psychiatry in Canada, the Canadian Association for Suicide Prevention, the Council of Canadians with Disabilities, a group of indigenous leaders, and the Ontario Association for ACT and FACT, psychiatrists who provide care to individuals with severe mental illness, among other groups, joined the call for a delay.

In its December announcement, the Canadian federal ministers said a factor in seeking a delay was that standards guiding clinicians would not be delivered until at least February – too close to when applications would be opened.

Upon hearing about the federal government’s intentions, the chair of the expert panel, Mona Gupta, MD, told The Canadian Press that she did not think it was necessary to put off implementation because necessary safeguards were already in place.

Dr. Chaimowitz awaits the standards but is optimistic that for mental illness, “the process will be tightly controlled, closely monitored, and open to scrutiny,” he said.

Dr. Braswell is not convinced. The concern is that adding people with mental illness is “going to overload the capacity of the government to monitor this practice,” he said.
 

Is the United States next?

Although Canada and the United States share a border, it’s unlikely that U.S. states will allow aid in dying for nonterminal illness, much less for psychiatric conditions any time soon, said Dr. Braswell and others.

Ten states – California, Colorado, Hawaii, Maine, Montana, New Jersey, New Mexico, Oregon, Vermont, and Washington – have laws allowing assistance in dying, but for terminal illness only.

In 2016, the APA adopted the American Medical Association policy on medical euthanasia, stating, “that a psychiatrist should not prescribe or administer any intervention to a nonterminally ill person for the purpose of causing death.”

Dr. Brendel said the field is acutely aware that people with mental illness do suffer, but that more work needs to be done – and is being done – on “distinguishing wishes to hasten death or end one’s life from these historical or traditional notions that any premature death is a suicide.”

There is also increasing discussion within the medical community, not just psychiatry, about a physician’s duty to relieve suffering, said Dr. Wynia. “There’s debate basically about whether we stand for preserving life essentially at all costs and never being involved in the taking of life, or whether we stand for reduction of suffering and being the advocate for the patients that we serve,” he said.

“Those are both legitimate,” said Dr. Wynia, adding, “there are good reasons to want both of those to be true.”

“I suspect that 20 years from now we will still be having conversations about how physicians, how psychiatrists ought to participate in preserving life and in shepherding death,” said Dr. Brendel.

But to Dr. Gaind, the debate is not just esoteric, it’s a soon-to-be reality in Canada. “When we’re providing death to people who aren’t dying, to me that’s like providing what amounts to a wrongful death,” he said.

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

Current depression guidelines offer incomplete guidance for clinicians to identify antidepressant withdrawal, based on data from a review of 21 guidelines.

Previous research suggests that approximately half of patients who discontinue or decrease dosage of antidepressants experience withdrawal symptoms, wrote Anders Sørensen, MD, of Copenhagen University Hospital, and colleagues. These symptoms are diverse and may include flulike symptoms, fatigue, anxiety, and sensations of electric shock, they noted. Most withdrawal effects last for a few weeks, but some persist for months or years, sometimes described as persistent postwithdrawal disorder, they added.

“Symptoms of withdrawal and depression overlap considerably but constitute two fundamentally different clinical conditions, which makes it important to distinguish between the two,” the researchers emphasized.

In a study published in the Journal of Affective Disorders, the researchers identified 21 clinical practice guidelines (CPGs) for depression published between 1998 and 2022. The guidelines were published in the United Kingdom, the United States, Canada, Australia, Singapore, Ireland, and New Zealand. They compared descriptions of withdrawal from antidepressants and calculated the proportion of CPGs with different information.

Overall, 15 of the 21 studies in the review (71%) noted that antidepressants are associated with withdrawal symptoms, but less than half (43%) used the term “withdrawal symptoms,” or similar. Of the nine guidelines that mentioned withdrawal symptoms, five used the term interchangeably with “discontinuation symptoms” and six used the term “discontinuation symptoms” only when discussing antidepressant withdrawal. In addition, six CPGs specifically stated that patients who stop antidepressants can experience withdrawal symptoms, and five stated that these symptoms also can occur in patients who are reducing or tapering their doses.

The type of withdrawal symptoms was mentioned in 10 CPGs, and the other 11 had no information on potential withdrawal symptoms, the researchers noted. Of the CPGs that mentioned symptoms specifically associated with withdrawal, the number of potential symptoms ranged from 4 to 39.

“None of the CPGs provided an exhaustive list of the potential withdrawal symptoms identified in the research literature,” the researchers wrote in their discussion.

Only four of the guidelines (19%) mentioned the overlap in symptoms between withdrawal from antidepressants and depression relapse, and only one provided guidance on distinguishing between the two conditions. Most of the symptoms of withdrawal, when described, were characterized as mild, brief, or self-limiting, the researchers noted.

“Being in withdrawal is a fundamentally different clinical situation than experiencing relapse, requiring two distinctly different treatment approaches,” the researchers emphasized. “Withdrawal reactions that are more severe and longer lasting than currently defined in the CPGs could risk getting misinterpreted as relapse, potentially leading to resumed unnecessary long-term antidepressant treatment in some patients,” they added.

The findings were limited by several factors including the inclusion only of guidelines from English-speaking countries, which may limit generalizability, the researchers noted. Other potential limitations include the subjective judgments involved in creating different guidelines, they said.

However, the results support the need for improved CPGs that help clinicians distinguish potential withdrawal reactions from depression relapse, and the need for more research on optimal dose reduction strategies for antidepressants, they concluded.

The study received no outside funding. The researchers had no financial conflicts to disclose.

Current depression guidelines offer incomplete guidance for clinicians to identify antidepressant withdrawal, based on data from a review of 21 guidelines.

Previous research suggests that approximately half of patients who discontinue or decrease dosage of antidepressants experience withdrawal symptoms, wrote Anders Sørensen, MD, of Copenhagen University Hospital, and colleagues. These symptoms are diverse and may include flulike symptoms, fatigue, anxiety, and sensations of electric shock, they noted. Most withdrawal effects last for a few weeks, but some persist for months or years, sometimes described as persistent postwithdrawal disorder, they added.

“Symptoms of withdrawal and depression overlap considerably but constitute two fundamentally different clinical conditions, which makes it important to distinguish between the two,” the researchers emphasized.

In a study published in the Journal of Affective Disorders, the researchers identified 21 clinical practice guidelines (CPGs) for depression published between 1998 and 2022. The guidelines were published in the United Kingdom, the United States, Canada, Australia, Singapore, Ireland, and New Zealand. They compared descriptions of withdrawal from antidepressants and calculated the proportion of CPGs with different information.

Overall, 15 of the 21 studies in the review (71%) noted that antidepressants are associated with withdrawal symptoms, but less than half (43%) used the term “withdrawal symptoms,” or similar. Of the nine guidelines that mentioned withdrawal symptoms, five used the term interchangeably with “discontinuation symptoms” and six used the term “discontinuation symptoms” only when discussing antidepressant withdrawal. In addition, six CPGs specifically stated that patients who stop antidepressants can experience withdrawal symptoms, and five stated that these symptoms also can occur in patients who are reducing or tapering their doses.

The type of withdrawal symptoms was mentioned in 10 CPGs, and the other 11 had no information on potential withdrawal symptoms, the researchers noted. Of the CPGs that mentioned symptoms specifically associated with withdrawal, the number of potential symptoms ranged from 4 to 39.

“None of the CPGs provided an exhaustive list of the potential withdrawal symptoms identified in the research literature,” the researchers wrote in their discussion.

Only four of the guidelines (19%) mentioned the overlap in symptoms between withdrawal from antidepressants and depression relapse, and only one provided guidance on distinguishing between the two conditions. Most of the symptoms of withdrawal, when described, were characterized as mild, brief, or self-limiting, the researchers noted.

“Being in withdrawal is a fundamentally different clinical situation than experiencing relapse, requiring two distinctly different treatment approaches,” the researchers emphasized. “Withdrawal reactions that are more severe and longer lasting than currently defined in the CPGs could risk getting misinterpreted as relapse, potentially leading to resumed unnecessary long-term antidepressant treatment in some patients,” they added.

The findings were limited by several factors including the inclusion only of guidelines from English-speaking countries, which may limit generalizability, the researchers noted. Other potential limitations include the subjective judgments involved in creating different guidelines, they said.

However, the results support the need for improved CPGs that help clinicians distinguish potential withdrawal reactions from depression relapse, and the need for more research on optimal dose reduction strategies for antidepressants, they concluded.

The study received no outside funding. The researchers had no financial conflicts to disclose.

Current depression guidelines offer incomplete guidance for clinicians to identify antidepressant withdrawal, based on data from a review of 21 guidelines.

Previous research suggests that approximately half of patients who discontinue or decrease dosage of antidepressants experience withdrawal symptoms, wrote Anders Sørensen, MD, of Copenhagen University Hospital, and colleagues. These symptoms are diverse and may include flulike symptoms, fatigue, anxiety, and sensations of electric shock, they noted. Most withdrawal effects last for a few weeks, but some persist for months or years, sometimes described as persistent postwithdrawal disorder, they added.

“Symptoms of withdrawal and depression overlap considerably but constitute two fundamentally different clinical conditions, which makes it important to distinguish between the two,” the researchers emphasized.

In a study published in the Journal of Affective Disorders, the researchers identified 21 clinical practice guidelines (CPGs) for depression published between 1998 and 2022. The guidelines were published in the United Kingdom, the United States, Canada, Australia, Singapore, Ireland, and New Zealand. They compared descriptions of withdrawal from antidepressants and calculated the proportion of CPGs with different information.

Overall, 15 of the 21 studies in the review (71%) noted that antidepressants are associated with withdrawal symptoms, but less than half (43%) used the term “withdrawal symptoms,” or similar. Of the nine guidelines that mentioned withdrawal symptoms, five used the term interchangeably with “discontinuation symptoms” and six used the term “discontinuation symptoms” only when discussing antidepressant withdrawal. In addition, six CPGs specifically stated that patients who stop antidepressants can experience withdrawal symptoms, and five stated that these symptoms also can occur in patients who are reducing or tapering their doses.

The type of withdrawal symptoms was mentioned in 10 CPGs, and the other 11 had no information on potential withdrawal symptoms, the researchers noted. Of the CPGs that mentioned symptoms specifically associated with withdrawal, the number of potential symptoms ranged from 4 to 39.

“None of the CPGs provided an exhaustive list of the potential withdrawal symptoms identified in the research literature,” the researchers wrote in their discussion.

Only four of the guidelines (19%) mentioned the overlap in symptoms between withdrawal from antidepressants and depression relapse, and only one provided guidance on distinguishing between the two conditions. Most of the symptoms of withdrawal, when described, were characterized as mild, brief, or self-limiting, the researchers noted.

“Being in withdrawal is a fundamentally different clinical situation than experiencing relapse, requiring two distinctly different treatment approaches,” the researchers emphasized. “Withdrawal reactions that are more severe and longer lasting than currently defined in the CPGs could risk getting misinterpreted as relapse, potentially leading to resumed unnecessary long-term antidepressant treatment in some patients,” they added.

The findings were limited by several factors including the inclusion only of guidelines from English-speaking countries, which may limit generalizability, the researchers noted. Other potential limitations include the subjective judgments involved in creating different guidelines, they said.

However, the results support the need for improved CPGs that help clinicians distinguish potential withdrawal reactions from depression relapse, and the need for more research on optimal dose reduction strategies for antidepressants, they concluded.

The study received no outside funding. The researchers had no financial conflicts to disclose.

Clinicians generally regard major depressive disorder (MDD) and schizophrenia as 2 separate and distinct psychiatric brain disorders. However, despite some differences, those 2 psychiatric syndromes have numerous similarities across clinical features and neurobiologic parameters.

Biological similarities

Both disorders share the following variables:

• Highly genetic in etiology but with environmental influences and epigenetics
• Associated with childhood maltreatment, abuse, or neglect
• Disrupted neuroplasticity, especially shrinkage in hippocampal volume
• Significant drop in brain-derived neurotrophic factor resulting in decreased neurogenesis
• Extensive white matter pathology across interhemispheric and intrahemispheric bundles
• Increased levels of serum cortisol, a stress hormone and inflammatory biomarker
• Hypofrontal cerebral blood flow during acute episodes of both MDD and schizophrenia
• Reduced dendritic spines (in number and size) and impaired experiential neuroplasticity
• Neuroinflammation (eg, cytokines, tumor necrosis factor-alpha, C-reactive protein) during acute episodes
• Elevated oxidative stress biomarkers, indicating an increase in free radicals
• Overactive default mode network associated with ruminations in MDD and “daydreaming” in schizophrenia
• Decrease in gamma-aminobutyric acid (GABA) and its inhibitory activity, translating into dysregulation of glutamatergic pathways and other neurotransmitters
• Immune dysregulation and comorbid autoimmune disorders

Clinical similarities

• Psychotic symptoms, especially delusional thinking such as paranoia in schizophrenia and severe self-deprecation in MDD
• Significantly elevated lifetime suicide risk
• Cognitive impairment (more severe in schizophrenia across several cognitive functions)
• Similarity of depressive and negative symptoms (especially anhedonia, apathy, restricted facial expression, social withdrawal)
• Antidepressant medications im­-prove depressive and negative symptoms (though not completely in the case of negative symptoms of schizophrenia)
• Both have treatment-resistant subtypes that fail to respond to standard therapies
• Both are associated with comorbid generalized anxiety disorder
• Both are associated with comorbid obsessive-compulsive disorder
• Both are associated with serious alcohol and drug use
• Early mortality from general medical conditions, especially cardiovascular risks due to obesity, diabetes, hypertension, dyslipidemia
• Elevated risk of dementia with aging compared to the unaffected general population
• Opioids improve MDD and psychosis (buprenorphine in MDD and morphine in schizophrenia)
• Several second-generation antipsychotic medications are approved for both MDD and schizophrenia
• Electroconvulsive therapy is effective when pharmacotherapy fails in both MDD and schizophrenia

Biological differences

• Glutamate N-methyl-D-aspar­tate receptor antagonists (eg, ketamine) improve MDD but worsen schizophrenia
• Muscarinic agonists improve psychosis but worsen depression
• High pain threshold in schizophrenia (pain insensitivity) and low threshold in MDD (in which pain is a common comorbidity)
• Cortical thinning more severe in schizophrenia
• Hippocampal atrophy is reversible with successful treatment in MDD but not in schizophrenia
• Hypofrontality is reversible with remission in MDD but not in schizophrenia

Clinical differences

• Auditory and visual hallucinations are more common in schizophrenia than in MDD
• Anosognosia is common in schizophrenia but not in MDD
• Implausible delusions are more common in schizophrenia than in MDD
• Mood-congruent delusions are more common in MDD than in schizophrenia
• Sadness, crying, pessimism, and self-deprecation are common in MDD but not in schizophrenia
• Achieving full remission is more common in MDD than in schizophrenia
• Long-acting injectable medications are available for schizophrenia but not for MDD
• Evidence-based psychotherapy, without pharmacotherapy, is more likely to be effective in MDD than in schizophrenia

A transdiagnostic model of psychopathology

The significant overlap between MDD and schizophrenia should not be surprising. They are both generated by the same organ, the human brain, with disrupted neurochemical and physiological circuits in the brain.

The overlap is also consistent with the emerging transdiagnostic model of psychopathology.^1-9 This model proposes that there is a “core” genetic risk for psychopathology with different iterations. The transdiagnostic model is in stark contrast to the prevailing DSM-5, which categorizes psychiatric disorders in “silos,” as if they are completely independent from each other despite many shared features. This is highly debatable according to the substantial evidence that multiple psychiatric disorders share many genes that influence brain development in utero and predispose individuals to a variety of clinical symptoms in adolescence and young adulthood.

The origin of mental illness is being disentangled by emerging research, which is identifying the common links among the various disorders currently listed in DSM-5.¹⁰ However, the evolution of psychiatric diagnosis has come full circle from a single entity before DSM, to multiple entities with DSM, and now back to a unified transdiagnostic model that is rapidly emerging.¹¹ This has implications for the FDA’s persistent dogma that clinical trials for new drugs must be targeted for 1 of the DSM-5 categories, a flawed and narrow assumption. Given the accelerating body of evidence for a unified, transdiagnostic model, it makes much more sense for the FDA to approve medications that target a psychiatric symptom that is shared by multiple psychiatric conditions within a transdiagnostic clinical system. When medications are approved for a symptom regardless of a DSM diagnosis, the term “off-label” and its “stigma” will then fade into history, along with the malignant preauthorization racket that was invented by greedy insurance companies that exploit the off-label use of medications (even when an FDA-approved medication for the patient’s condition does not yet exist) simply to deny coverage, lower their expenses, and fatten their profits.

Clinicians generally regard major depressive disorder (MDD) and schizophrenia as 2 separate and distinct psychiatric brain disorders. However, despite some differences, those 2 psychiatric syndromes have numerous similarities across clinical features and neurobiologic parameters.

Biological similarities

Both disorders share the following variables:

• Highly genetic in etiology but with environmental influences and epigenetics
• Associated with childhood maltreatment, abuse, or neglect
• Disrupted neuroplasticity, especially shrinkage in hippocampal volume
• Significant drop in brain-derived neurotrophic factor resulting in decreased neurogenesis
• Extensive white matter pathology across interhemispheric and intrahemispheric bundles
• Increased levels of serum cortisol, a stress hormone and inflammatory biomarker
• Hypofrontal cerebral blood flow during acute episodes of both MDD and schizophrenia
• Reduced dendritic spines (in number and size) and impaired experiential neuroplasticity
• Neuroinflammation (eg, cytokines, tumor necrosis factor-alpha, C-reactive protein) during acute episodes
• Elevated oxidative stress biomarkers, indicating an increase in free radicals
• Overactive default mode network associated with ruminations in MDD and “daydreaming” in schizophrenia
• Decrease in gamma-aminobutyric acid (GABA) and its inhibitory activity, translating into dysregulation of glutamatergic pathways and other neurotransmitters
• Immune dysregulation and comorbid autoimmune disorders

Clinical similarities

• Psychotic symptoms, especially delusional thinking such as paranoia in schizophrenia and severe self-deprecation in MDD
• Significantly elevated lifetime suicide risk
• Cognitive impairment (more severe in schizophrenia across several cognitive functions)
• Similarity of depressive and negative symptoms (especially anhedonia, apathy, restricted facial expression, social withdrawal)
• Antidepressant medications im­-prove depressive and negative symptoms (though not completely in the case of negative symptoms of schizophrenia)
• Both have treatment-resistant subtypes that fail to respond to standard therapies
• Both are associated with comorbid generalized anxiety disorder
• Both are associated with comorbid obsessive-compulsive disorder
• Both are associated with serious alcohol and drug use
• Early mortality from general medical conditions, especially cardiovascular risks due to obesity, diabetes, hypertension, dyslipidemia
• Elevated risk of dementia with aging compared to the unaffected general population
• Opioids improve MDD and psychosis (buprenorphine in MDD and morphine in schizophrenia)
• Several second-generation antipsychotic medications are approved for both MDD and schizophrenia
• Electroconvulsive therapy is effective when pharmacotherapy fails in both MDD and schizophrenia

Biological differences

• Glutamate N-methyl-D-aspar­tate receptor antagonists (eg, ketamine) improve MDD but worsen schizophrenia
• Muscarinic agonists improve psychosis but worsen depression
• High pain threshold in schizophrenia (pain insensitivity) and low threshold in MDD (in which pain is a common comorbidity)
• Cortical thinning more severe in schizophrenia
• Hippocampal atrophy is reversible with successful treatment in MDD but not in schizophrenia
• Hypofrontality is reversible with remission in MDD but not in schizophrenia

Clinical differences

• Auditory and visual hallucinations are more common in schizophrenia than in MDD
• Anosognosia is common in schizophrenia but not in MDD
• Implausible delusions are more common in schizophrenia than in MDD
• Mood-congruent delusions are more common in MDD than in schizophrenia
• Sadness, crying, pessimism, and self-deprecation are common in MDD but not in schizophrenia
• Achieving full remission is more common in MDD than in schizophrenia
• Long-acting injectable medications are available for schizophrenia but not for MDD
• Evidence-based psychotherapy, without pharmacotherapy, is more likely to be effective in MDD than in schizophrenia

A transdiagnostic model of psychopathology

The significant overlap between MDD and schizophrenia should not be surprising. They are both generated by the same organ, the human brain, with disrupted neurochemical and physiological circuits in the brain.

The overlap is also consistent with the emerging transdiagnostic model of psychopathology.^1-9 This model proposes that there is a “core” genetic risk for psychopathology with different iterations. The transdiagnostic model is in stark contrast to the prevailing DSM-5, which categorizes psychiatric disorders in “silos,” as if they are completely independent from each other despite many shared features. This is highly debatable according to the substantial evidence that multiple psychiatric disorders share many genes that influence brain development in utero and predispose individuals to a variety of clinical symptoms in adolescence and young adulthood.

The origin of mental illness is being disentangled by emerging research, which is identifying the common links among the various disorders currently listed in DSM-5.¹⁰ However, the evolution of psychiatric diagnosis has come full circle from a single entity before DSM, to multiple entities with DSM, and now back to a unified transdiagnostic model that is rapidly emerging.¹¹ This has implications for the FDA’s persistent dogma that clinical trials for new drugs must be targeted for 1 of the DSM-5 categories, a flawed and narrow assumption. Given the accelerating body of evidence for a unified, transdiagnostic model, it makes much more sense for the FDA to approve medications that target a psychiatric symptom that is shared by multiple psychiatric conditions within a transdiagnostic clinical system. When medications are approved for a symptom regardless of a DSM diagnosis, the term “off-label” and its “stigma” will then fade into history, along with the malignant preauthorization racket that was invented by greedy insurance companies that exploit the off-label use of medications (even when an FDA-approved medication for the patient’s condition does not yet exist) simply to deny coverage, lower their expenses, and fatten their profits.

Clinicians generally regard major depressive disorder (MDD) and schizophrenia as 2 separate and distinct psychiatric brain disorders. However, despite some differences, those 2 psychiatric syndromes have numerous similarities across clinical features and neurobiologic parameters.

Biological similarities

Both disorders share the following variables:

• Highly genetic in etiology but with environmental influences and epigenetics
• Associated with childhood maltreatment, abuse, or neglect
• Disrupted neuroplasticity, especially shrinkage in hippocampal volume
• Significant drop in brain-derived neurotrophic factor resulting in decreased neurogenesis
• Extensive white matter pathology across interhemispheric and intrahemispheric bundles
• Increased levels of serum cortisol, a stress hormone and inflammatory biomarker
• Hypofrontal cerebral blood flow during acute episodes of both MDD and schizophrenia
• Reduced dendritic spines (in number and size) and impaired experiential neuroplasticity
• Neuroinflammation (eg, cytokines, tumor necrosis factor-alpha, C-reactive protein) during acute episodes
• Elevated oxidative stress biomarkers, indicating an increase in free radicals
• Overactive default mode network associated with ruminations in MDD and “daydreaming” in schizophrenia
• Decrease in gamma-aminobutyric acid (GABA) and its inhibitory activity, translating into dysregulation of glutamatergic pathways and other neurotransmitters
• Immune dysregulation and comorbid autoimmune disorders

Clinical similarities

• Psychotic symptoms, especially delusional thinking such as paranoia in schizophrenia and severe self-deprecation in MDD
• Significantly elevated lifetime suicide risk
• Cognitive impairment (more severe in schizophrenia across several cognitive functions)
• Similarity of depressive and negative symptoms (especially anhedonia, apathy, restricted facial expression, social withdrawal)
• Antidepressant medications im­-prove depressive and negative symptoms (though not completely in the case of negative symptoms of schizophrenia)
• Both have treatment-resistant subtypes that fail to respond to standard therapies
• Both are associated with comorbid generalized anxiety disorder
• Both are associated with comorbid obsessive-compulsive disorder
• Both are associated with serious alcohol and drug use
• Early mortality from general medical conditions, especially cardiovascular risks due to obesity, diabetes, hypertension, dyslipidemia
• Elevated risk of dementia with aging compared to the unaffected general population
• Opioids improve MDD and psychosis (buprenorphine in MDD and morphine in schizophrenia)
• Several second-generation antipsychotic medications are approved for both MDD and schizophrenia
• Electroconvulsive therapy is effective when pharmacotherapy fails in both MDD and schizophrenia

Biological differences

• Glutamate N-methyl-D-aspar­tate receptor antagonists (eg, ketamine) improve MDD but worsen schizophrenia
• Muscarinic agonists improve psychosis but worsen depression
• High pain threshold in schizophrenia (pain insensitivity) and low threshold in MDD (in which pain is a common comorbidity)
• Cortical thinning more severe in schizophrenia
• Hippocampal atrophy is reversible with successful treatment in MDD but not in schizophrenia
• Hypofrontality is reversible with remission in MDD but not in schizophrenia

Clinical differences

• Auditory and visual hallucinations are more common in schizophrenia than in MDD
• Anosognosia is common in schizophrenia but not in MDD
• Implausible delusions are more common in schizophrenia than in MDD
• Mood-congruent delusions are more common in MDD than in schizophrenia
• Sadness, crying, pessimism, and self-deprecation are common in MDD but not in schizophrenia
• Achieving full remission is more common in MDD than in schizophrenia
• Long-acting injectable medications are available for schizophrenia but not for MDD
• Evidence-based psychotherapy, without pharmacotherapy, is more likely to be effective in MDD than in schizophrenia

A transdiagnostic model of psychopathology

The significant overlap between MDD and schizophrenia should not be surprising. They are both generated by the same organ, the human brain, with disrupted neurochemical and physiological circuits in the brain.

The overlap is also consistent with the emerging transdiagnostic model of psychopathology.^1-9 This model proposes that there is a “core” genetic risk for psychopathology with different iterations. The transdiagnostic model is in stark contrast to the prevailing DSM-5, which categorizes psychiatric disorders in “silos,” as if they are completely independent from each other despite many shared features. This is highly debatable according to the substantial evidence that multiple psychiatric disorders share many genes that influence brain development in utero and predispose individuals to a variety of clinical symptoms in adolescence and young adulthood.

The origin of mental illness is being disentangled by emerging research, which is identifying the common links among the various disorders currently listed in DSM-5.¹⁰ However, the evolution of psychiatric diagnosis has come full circle from a single entity before DSM, to multiple entities with DSM, and now back to a unified transdiagnostic model that is rapidly emerging.¹¹ This has implications for the FDA’s persistent dogma that clinical trials for new drugs must be targeted for 1 of the DSM-5 categories, a flawed and narrow assumption. Given the accelerating body of evidence for a unified, transdiagnostic model, it makes much more sense for the FDA to approve medications that target a psychiatric symptom that is shared by multiple psychiatric conditions within a transdiagnostic clinical system. When medications are approved for a symptom regardless of a DSM diagnosis, the term “off-label” and its “stigma” will then fade into history, along with the malignant preauthorization racket that was invented by greedy insurance companies that exploit the off-label use of medications (even when an FDA-approved medication for the patient’s condition does not yet exist) simply to deny coverage, lower their expenses, and fatten their profits.

CASE Anxious and confused

Mr. M, age 53, a surgeon, presents to the emergency department (ED) following a panic attack and concerns from his staff that he appears confused. Specifically, staff members report that in the past 4 months, Mr. M was observed having problems completing some postoperative tasks related to chart documentation. Mr. M has a history of major depressive disorder (MDD), hypertension, hyperlipidemia, and type 2 diabetes.

HISTORY A long-standing diagnosis of depression

Mr. M reports that 30 years ago, he received care from a psychiatrist to address symptoms of MDD. He says that around the time he arrived at the ED, he had noticed subtle but gradual changes in his cognition, which led him to skip words and often struggle to find the correct words. These episodes left him confused. Mr. M started getting anxious about these cognitive issues because they disrupted his work and forced him to reduce his duties. He does not have any known family history of mental illness, is single, and lives alone.

EVALUATION After stroke is ruled out, a psychiatric workup

In the ED, a comprehensive exam rules out an acute cerebrovascular event. A neurologic evaluation notes some delay in processing information and observes Mr. M having difficulty following simple commands. Laboratory investigations, including a comprehensive metabolic panel, are unremarkable. An MRI of Mr. M’s brain, with and without contrast, notes no acute findings. He is discharged from the ED with a diagnosis of MDD.

Before he presented to the ED, Mr. M’s medication regimen included duloxetine 60 mg/d, buspirone 10 mg 3 times a day, and aripiprazole 5 mg/d for MDD and anxiety. After the ED visit, Mr. M’s physician refers him to an outpatient psychiatrist for management of worsening depression and panic attacks. During the psychiatrist’s evaluation, Mr. M reports a decreased interest in activities, decreased motivation, being easily fatigued, and having poor sleep. He denies having a depressed mood, difficulty concentrating, or having problems with his appetite. He also denies suicidal thoughts, both past and present.

Mr. M describes his mood as anxious, primarily surrounding his recent cognitive changes. He does not have a substance use disorder, psychotic illness, mania or hypomania, posttraumatic stress disorder, or obsessive-compulsive disorder. He reports adherence to his psychiatric medications. A mental status exam reveals Mr. M to be anxious. His attention is not well sustained, and he has difficulty describing details of his cognitive struggles, providing vague descriptions such as “skipping thought” and “skipping words.” Mr. M’s affect is congruent to his mood with some restriction and the psychiatrist notes that he is experiencing thought latency, poverty of content of thoughts, word-finding difficulties, and circumlocution. Mr. M denies any perceptual abnormalities, and there is no evidence of delusions.

[polldaddy:11320112]

The authors’ observations

Mr. M’s symptoms are significant for subacute cognitive decline that is subtle but gradual and can be easily missed, especially in the beginning. Though his ED evaluation—including brain imaging—ruled out acute or focal neurologic findings and his primary psychiatric presentation was anxiety, Mr. M’s medical history and mental status exam were suggestive of cognitive deficits.

Collateral information was obtained from his work colleagues, which confirmed both cognitive problems and comorbid anxiety. Additionally, given Mr. M’s high cognitive baseline as a surgeon, the new-onset cognitive changes over 4 months warranted further cognitive and neurologic evaluation. There are many causes of cognitive impairment (vascular, cancer, infection, autoimmune, medications, substances or toxins, neurodegenerative, psychiatric, vitamin deficiencies), all of which need to be considered in a patient with a nonspecific presentation such as Mr. M’s. The psychiatrist confirmed Mr. M’s current medication regimen, and discussed tapering aripiprazole while continuing duloxetine and buspirone.

Continue to: EVALUATION A closer look at cognitive deficits

Mr. M scores 12/30 on the Montreal Cognitive Assessment (MoCA), indicating moderate cognitive impairment (Table 1). The psychiatrist refers Mr. M to Neurology. During his neurologic evaluation, Mr. M continues to report feeling anxious that “something is wrong” and skips his words. The neurologist confirms Mr. M’s symptoms may have started 2 to 3 months before he presented to the ED. Mr. M reports unusual eating habits, including yogurt and cookies for breakfast, Mexican food for lunch, and more cookies for dinner. He denies having a fever, gaining or losing weight, rashes, headaches, neck stiffness, tingling or weakness or stiffness of limbs, vertigo, visual changes, photo­phobia, unsteady gait, bowel or bladder incontinence, or tremors.

When the neurologist repeats the MoCA, Mr. M again scores 12. The neurologist notes that Mr. M answers questions a little slowly and pauses for thoughts when unable to find an answer. Mr. M has difficulty following some simple commands, such as “touch a finger to your nose.” Other in-office neurologic physical exams (cranial nerves, involuntary movements or tremors, sensation, muscle strength, reflexes, cerebellar signs) are unremarkable except for mildly decreased vibration sense of his toes. The neurologist concludes that Mr. M’s presentation is suggestive of subacute to chronic bradyphrenia and orders additional evaluation, including neuropsychological testing.

[polldaddy:11320114]

The authors’ observations

Physical and neurologic exams were not suggestive of any obvious causes of cognitive decline. Both the mental status exam and 2 serial MoCAs suggested deficits in executive function, language, and memory. Each of the differential diagnoses considered was ruled out with workup or exams (Table 2), which led to a most likely diagnosis of neurodegenerative disorder with PPA. Neuropsychological testing confirmed the diagnosis of nonfluent PPA.

Primary progressive aphasia

PPA is an uncommon, heterogeneous group of disorders stemming from focal degeneration of language-governing centers of the brain.^1,2 The estimated prevalence of PPA is 3 in 100,000 cases.^2,3 There are 4 major variants of PPA (Table 3⁴), and each presents with distinct language, cognitive, neuroanatomical, and neuropathological characteristics.⁴ PPA is usually diagnosed in late middle life; however, diagnosis is often delayed due to the relative obscurity of the disorder.⁴ In Mr. M’s case, it took approximately 4 months of evaluations by various specialists before a diagnosis was confirmed.

The initial phase of PPA can present as a diagnostic challenge because patients can have difficulty articulating their cognitive and language deficits. PPA can be commonly mistaken for a primary psychiatric disorder such as MDD or anxiety, which can further delay an accurate diagnosis and treatment. Special attention to the mental status exam, close observation of the patient’s language, and assessment of cognitive abilities using standardized screenings such as the MoCA or Mini-Mental State Examination can be helpful in clarifying the diagnosis. It is also important to rule out developmental problems (eg, dyslexia) and hearing difficulties, particularly in older patients.⁴

Continue to: TREATMENT Adjusting the medication regimen

The neurologist completes additional examinations to rule out causes of rare neurodegenerative disorders, including CSF autoimmune disorders, Creutzfeldt-Jakob disease, and Alzheimer disease (AD) (Table 4). Mr. M continues to follow up with his outpatient psychiatrist and his medication regimen is adjusted. Aripiprazole and buspirone are discontinued, and duloxetine is titrated to 60 mg twice a day. During follow-up visits, Mr. M discusses his understanding of his neurologic condition. His concerns shift to his illness and prognosis. During these visits, he continues to deny suicidality.

[polldaddy:11320115]

The authors’ observations

Mr. M’s neurodegenerative workup identified an intriguing diagnostic challenge. A repeat brain MRI (Figure) showed atrophy patterns suggestive of frontotemporal lobar degeneration (FTLD). On the other hand, his CSF ATI (A-beta 42/T-tau index, a value used to aid in the diagnosis of AD) was <1, suggesting early-onset AD.^5,6 Although significant advances have been made to distinguish AD and FTLD following an autopsy, there are still no reliable or definitive biomarkers to distinguish AD from FTLD (particularly in the early stages of FTLD). This can often leave the confirmatory diagnosis as a question.⁷

A PPA diagnosis (and other dementias) can have a significant impact on the patient and their family due to the uncertain nature of the progression of the disease and quality-of-life issues related to language and other cognitive deficits. Early identification and accurate diagnosis of PPA and its etiology (ie, AD vs FTLD) is important to avoid unnecessary exposure to medications or the use of polypharmacy to treat an inaccurate diagnosis of a primary psychiatric illness. For example, Mr. M was being treated with 3 psychiatric medications (aripiprazole, buspirone, and duloxetine) for depression and anxiety prior to the diagnosis of PPA.

Nonpharmacologic interventions can play an important role in the management of patients with PPA. These include educating the patient and their family about the diagnosis and discussions about future planning, including appropriate social support, employment, and finances.⁴ Pharmacologic interventions may be limited, as there are currently no disease-modifying treatments for PPA or FTLD. For patients with nonfluent PPA or AD, cholinesterase inhibitors such as donepezil or N-methyl-d-aspartate receptor antagonists such as memantine may be utilized, though benefits can be limited.⁴ Recent research has explored the role of transcranial magnetic stimulation and suggest short-term benefits, as have case reports of behavioral interventions targeting language.⁸

Psychiatrists should continue to treat patients with PPA for comorbid anxiety or depression, with appropriate medications and/or supportive therapy to guide the patient through the process of grief. Assessing for suicide risk is also important in patients diagnosed with dementia. A retrospective cohort study of patients age ≥60 with a diagnosis of dementia suggested that the majority of suicides occurred in those with a new dementia diagnosis.⁹ End-of-life decisions such as advanced directives should be made when the patient still has legal capacity, ideally as soon as possible after diagnosis.¹⁰

OUTCOME Remaining engaged in treatment

Mr. M continues to follow-up with the Neurology team. He has also been regularly seeing his psychiatric team for medication management and supportive therapy, and his psychiatric medications have been optimized to reduce polypharmacy. During his sessions, Mr. M discusses his grief and plans for the future. Despite his anxiety about the uncertainty of his prognosis, Mr. M continues to report that he is doing reasonably well and remains engaged in treatment.

Bottom Line

Patients with primary progressive aphasia and rare neurodegenerative disorders may present to an outpatient or emergency setting with symptoms of anxiety and confusion. They are frequently misdiagnosed with a primary psychiatric disorder due to the nature of cognitive and language deficits, particularly in the early stages of the disease. Paying close attention to language and conducting cognitive screening are critical in identifying the true cause of a patient’s symptoms.

Related Resources

• Primary progressive aphasia. National Center for Advancing Translational Sciences. Genetic and Rare Diseases Information Center. https://rarediseases.info.nih.gov/diseases/8541/primary-progressive-aphasia
• Moller MD, Parmenter BA, Lane DW. Neuropsychological testing: A useful but underutilized resource. Current Psychiatry. 2019;18(11):40-46,51.

Drug Brand Names

Aripiprazole • Abilify
Donepezil • Aricept
Duloxetine • Cymbalta
Memantine • Namenda

CASE Anxious and confused

Mr. M, age 53, a surgeon, presents to the emergency department (ED) following a panic attack and concerns from his staff that he appears confused. Specifically, staff members report that in the past 4 months, Mr. M was observed having problems completing some postoperative tasks related to chart documentation. Mr. M has a history of major depressive disorder (MDD), hypertension, hyperlipidemia, and type 2 diabetes.

HISTORY A long-standing diagnosis of depression

Mr. M reports that 30 years ago, he received care from a psychiatrist to address symptoms of MDD. He says that around the time he arrived at the ED, he had noticed subtle but gradual changes in his cognition, which led him to skip words and often struggle to find the correct words. These episodes left him confused. Mr. M started getting anxious about these cognitive issues because they disrupted his work and forced him to reduce his duties. He does not have any known family history of mental illness, is single, and lives alone.

EVALUATION After stroke is ruled out, a psychiatric workup

In the ED, a comprehensive exam rules out an acute cerebrovascular event. A neurologic evaluation notes some delay in processing information and observes Mr. M having difficulty following simple commands. Laboratory investigations, including a comprehensive metabolic panel, are unremarkable. An MRI of Mr. M’s brain, with and without contrast, notes no acute findings. He is discharged from the ED with a diagnosis of MDD.

Before he presented to the ED, Mr. M’s medication regimen included duloxetine 60 mg/d, buspirone 10 mg 3 times a day, and aripiprazole 5 mg/d for MDD and anxiety. After the ED visit, Mr. M’s physician refers him to an outpatient psychiatrist for management of worsening depression and panic attacks. During the psychiatrist’s evaluation, Mr. M reports a decreased interest in activities, decreased motivation, being easily fatigued, and having poor sleep. He denies having a depressed mood, difficulty concentrating, or having problems with his appetite. He also denies suicidal thoughts, both past and present.

Mr. M describes his mood as anxious, primarily surrounding his recent cognitive changes. He does not have a substance use disorder, psychotic illness, mania or hypomania, posttraumatic stress disorder, or obsessive-compulsive disorder. He reports adherence to his psychiatric medications. A mental status exam reveals Mr. M to be anxious. His attention is not well sustained, and he has difficulty describing details of his cognitive struggles, providing vague descriptions such as “skipping thought” and “skipping words.” Mr. M’s affect is congruent to his mood with some restriction and the psychiatrist notes that he is experiencing thought latency, poverty of content of thoughts, word-finding difficulties, and circumlocution. Mr. M denies any perceptual abnormalities, and there is no evidence of delusions.

[polldaddy:11320112]

The authors’ observations

Mr. M’s symptoms are significant for subacute cognitive decline that is subtle but gradual and can be easily missed, especially in the beginning. Though his ED evaluation—including brain imaging—ruled out acute or focal neurologic findings and his primary psychiatric presentation was anxiety, Mr. M’s medical history and mental status exam were suggestive of cognitive deficits.

Collateral information was obtained from his work colleagues, which confirmed both cognitive problems and comorbid anxiety. Additionally, given Mr. M’s high cognitive baseline as a surgeon, the new-onset cognitive changes over 4 months warranted further cognitive and neurologic evaluation. There are many causes of cognitive impairment (vascular, cancer, infection, autoimmune, medications, substances or toxins, neurodegenerative, psychiatric, vitamin deficiencies), all of which need to be considered in a patient with a nonspecific presentation such as Mr. M’s. The psychiatrist confirmed Mr. M’s current medication regimen, and discussed tapering aripiprazole while continuing duloxetine and buspirone.

Continue to: EVALUATION A closer look at cognitive deficits

Mr. M scores 12/30 on the Montreal Cognitive Assessment (MoCA), indicating moderate cognitive impairment (Table 1). The psychiatrist refers Mr. M to Neurology. During his neurologic evaluation, Mr. M continues to report feeling anxious that “something is wrong” and skips his words. The neurologist confirms Mr. M’s symptoms may have started 2 to 3 months before he presented to the ED. Mr. M reports unusual eating habits, including yogurt and cookies for breakfast, Mexican food for lunch, and more cookies for dinner. He denies having a fever, gaining or losing weight, rashes, headaches, neck stiffness, tingling or weakness or stiffness of limbs, vertigo, visual changes, photo­phobia, unsteady gait, bowel or bladder incontinence, or tremors.

When the neurologist repeats the MoCA, Mr. M again scores 12. The neurologist notes that Mr. M answers questions a little slowly and pauses for thoughts when unable to find an answer. Mr. M has difficulty following some simple commands, such as “touch a finger to your nose.” Other in-office neurologic physical exams (cranial nerves, involuntary movements or tremors, sensation, muscle strength, reflexes, cerebellar signs) are unremarkable except for mildly decreased vibration sense of his toes. The neurologist concludes that Mr. M’s presentation is suggestive of subacute to chronic bradyphrenia and orders additional evaluation, including neuropsychological testing.

[polldaddy:11320114]

The authors’ observations

Physical and neurologic exams were not suggestive of any obvious causes of cognitive decline. Both the mental status exam and 2 serial MoCAs suggested deficits in executive function, language, and memory. Each of the differential diagnoses considered was ruled out with workup or exams (Table 2), which led to a most likely diagnosis of neurodegenerative disorder with PPA. Neuropsychological testing confirmed the diagnosis of nonfluent PPA.

Primary progressive aphasia

PPA is an uncommon, heterogeneous group of disorders stemming from focal degeneration of language-governing centers of the brain.^1,2 The estimated prevalence of PPA is 3 in 100,000 cases.^2,3 There are 4 major variants of PPA (Table 3⁴), and each presents with distinct language, cognitive, neuroanatomical, and neuropathological characteristics.⁴ PPA is usually diagnosed in late middle life; however, diagnosis is often delayed due to the relative obscurity of the disorder.⁴ In Mr. M’s case, it took approximately 4 months of evaluations by various specialists before a diagnosis was confirmed.

The initial phase of PPA can present as a diagnostic challenge because patients can have difficulty articulating their cognitive and language deficits. PPA can be commonly mistaken for a primary psychiatric disorder such as MDD or anxiety, which can further delay an accurate diagnosis and treatment. Special attention to the mental status exam, close observation of the patient’s language, and assessment of cognitive abilities using standardized screenings such as the MoCA or Mini-Mental State Examination can be helpful in clarifying the diagnosis. It is also important to rule out developmental problems (eg, dyslexia) and hearing difficulties, particularly in older patients.⁴

Continue to: TREATMENT Adjusting the medication regimen

The neurologist completes additional examinations to rule out causes of rare neurodegenerative disorders, including CSF autoimmune disorders, Creutzfeldt-Jakob disease, and Alzheimer disease (AD) (Table 4). Mr. M continues to follow up with his outpatient psychiatrist and his medication regimen is adjusted. Aripiprazole and buspirone are discontinued, and duloxetine is titrated to 60 mg twice a day. During follow-up visits, Mr. M discusses his understanding of his neurologic condition. His concerns shift to his illness and prognosis. During these visits, he continues to deny suicidality.

[polldaddy:11320115]

The authors’ observations

Mr. M’s neurodegenerative workup identified an intriguing diagnostic challenge. A repeat brain MRI (Figure) showed atrophy patterns suggestive of frontotemporal lobar degeneration (FTLD). On the other hand, his CSF ATI (A-beta 42/T-tau index, a value used to aid in the diagnosis of AD) was <1, suggesting early-onset AD.^5,6 Although significant advances have been made to distinguish AD and FTLD following an autopsy, there are still no reliable or definitive biomarkers to distinguish AD from FTLD (particularly in the early stages of FTLD). This can often leave the confirmatory diagnosis as a question.⁷

A PPA diagnosis (and other dementias) can have a significant impact on the patient and their family due to the uncertain nature of the progression of the disease and quality-of-life issues related to language and other cognitive deficits. Early identification and accurate diagnosis of PPA and its etiology (ie, AD vs FTLD) is important to avoid unnecessary exposure to medications or the use of polypharmacy to treat an inaccurate diagnosis of a primary psychiatric illness. For example, Mr. M was being treated with 3 psychiatric medications (aripiprazole, buspirone, and duloxetine) for depression and anxiety prior to the diagnosis of PPA.

Nonpharmacologic interventions can play an important role in the management of patients with PPA. These include educating the patient and their family about the diagnosis and discussions about future planning, including appropriate social support, employment, and finances.⁴ Pharmacologic interventions may be limited, as there are currently no disease-modifying treatments for PPA or FTLD. For patients with nonfluent PPA or AD, cholinesterase inhibitors such as donepezil or N-methyl-d-aspartate receptor antagonists such as memantine may be utilized, though benefits can be limited.⁴ Recent research has explored the role of transcranial magnetic stimulation and suggest short-term benefits, as have case reports of behavioral interventions targeting language.⁸

Psychiatrists should continue to treat patients with PPA for comorbid anxiety or depression, with appropriate medications and/or supportive therapy to guide the patient through the process of grief. Assessing for suicide risk is also important in patients diagnosed with dementia. A retrospective cohort study of patients age ≥60 with a diagnosis of dementia suggested that the majority of suicides occurred in those with a new dementia diagnosis.⁹ End-of-life decisions such as advanced directives should be made when the patient still has legal capacity, ideally as soon as possible after diagnosis.¹⁰

OUTCOME Remaining engaged in treatment

Mr. M continues to follow-up with the Neurology team. He has also been regularly seeing his psychiatric team for medication management and supportive therapy, and his psychiatric medications have been optimized to reduce polypharmacy. During his sessions, Mr. M discusses his grief and plans for the future. Despite his anxiety about the uncertainty of his prognosis, Mr. M continues to report that he is doing reasonably well and remains engaged in treatment.

Bottom Line

Patients with primary progressive aphasia and rare neurodegenerative disorders may present to an outpatient or emergency setting with symptoms of anxiety and confusion. They are frequently misdiagnosed with a primary psychiatric disorder due to the nature of cognitive and language deficits, particularly in the early stages of the disease. Paying close attention to language and conducting cognitive screening are critical in identifying the true cause of a patient’s symptoms.

Related Resources

• Primary progressive aphasia. National Center for Advancing Translational Sciences. Genetic and Rare Diseases Information Center. https://rarediseases.info.nih.gov/diseases/8541/primary-progressive-aphasia
• Moller MD, Parmenter BA, Lane DW. Neuropsychological testing: A useful but underutilized resource. Current Psychiatry. 2019;18(11):40-46,51.

Drug Brand Names

Aripiprazole • Abilify
Donepezil • Aricept
Duloxetine • Cymbalta
Memantine • Namenda

CASE Anxious and confused

Mr. M, age 53, a surgeon, presents to the emergency department (ED) following a panic attack and concerns from his staff that he appears confused. Specifically, staff members report that in the past 4 months, Mr. M was observed having problems completing some postoperative tasks related to chart documentation. Mr. M has a history of major depressive disorder (MDD), hypertension, hyperlipidemia, and type 2 diabetes.

HISTORY A long-standing diagnosis of depression

Mr. M reports that 30 years ago, he received care from a psychiatrist to address symptoms of MDD. He says that around the time he arrived at the ED, he had noticed subtle but gradual changes in his cognition, which led him to skip words and often struggle to find the correct words. These episodes left him confused. Mr. M started getting anxious about these cognitive issues because they disrupted his work and forced him to reduce his duties. He does not have any known family history of mental illness, is single, and lives alone.

EVALUATION After stroke is ruled out, a psychiatric workup

In the ED, a comprehensive exam rules out an acute cerebrovascular event. A neurologic evaluation notes some delay in processing information and observes Mr. M having difficulty following simple commands. Laboratory investigations, including a comprehensive metabolic panel, are unremarkable. An MRI of Mr. M’s brain, with and without contrast, notes no acute findings. He is discharged from the ED with a diagnosis of MDD.

Before he presented to the ED, Mr. M’s medication regimen included duloxetine 60 mg/d, buspirone 10 mg 3 times a day, and aripiprazole 5 mg/d for MDD and anxiety. After the ED visit, Mr. M’s physician refers him to an outpatient psychiatrist for management of worsening depression and panic attacks. During the psychiatrist’s evaluation, Mr. M reports a decreased interest in activities, decreased motivation, being easily fatigued, and having poor sleep. He denies having a depressed mood, difficulty concentrating, or having problems with his appetite. He also denies suicidal thoughts, both past and present.

Mr. M describes his mood as anxious, primarily surrounding his recent cognitive changes. He does not have a substance use disorder, psychotic illness, mania or hypomania, posttraumatic stress disorder, or obsessive-compulsive disorder. He reports adherence to his psychiatric medications. A mental status exam reveals Mr. M to be anxious. His attention is not well sustained, and he has difficulty describing details of his cognitive struggles, providing vague descriptions such as “skipping thought” and “skipping words.” Mr. M’s affect is congruent to his mood with some restriction and the psychiatrist notes that he is experiencing thought latency, poverty of content of thoughts, word-finding difficulties, and circumlocution. Mr. M denies any perceptual abnormalities, and there is no evidence of delusions.

[polldaddy:11320112]

The authors’ observations

Mr. M’s symptoms are significant for subacute cognitive decline that is subtle but gradual and can be easily missed, especially in the beginning. Though his ED evaluation—including brain imaging—ruled out acute or focal neurologic findings and his primary psychiatric presentation was anxiety, Mr. M’s medical history and mental status exam were suggestive of cognitive deficits.

Collateral information was obtained from his work colleagues, which confirmed both cognitive problems and comorbid anxiety. Additionally, given Mr. M’s high cognitive baseline as a surgeon, the new-onset cognitive changes over 4 months warranted further cognitive and neurologic evaluation. There are many causes of cognitive impairment (vascular, cancer, infection, autoimmune, medications, substances or toxins, neurodegenerative, psychiatric, vitamin deficiencies), all of which need to be considered in a patient with a nonspecific presentation such as Mr. M’s. The psychiatrist confirmed Mr. M’s current medication regimen, and discussed tapering aripiprazole while continuing duloxetine and buspirone.

Continue to: EVALUATION A closer look at cognitive deficits

Mr. M scores 12/30 on the Montreal Cognitive Assessment (MoCA), indicating moderate cognitive impairment (Table 1). The psychiatrist refers Mr. M to Neurology. During his neurologic evaluation, Mr. M continues to report feeling anxious that “something is wrong” and skips his words. The neurologist confirms Mr. M’s symptoms may have started 2 to 3 months before he presented to the ED. Mr. M reports unusual eating habits, including yogurt and cookies for breakfast, Mexican food for lunch, and more cookies for dinner. He denies having a fever, gaining or losing weight, rashes, headaches, neck stiffness, tingling or weakness or stiffness of limbs, vertigo, visual changes, photo­phobia, unsteady gait, bowel or bladder incontinence, or tremors.

When the neurologist repeats the MoCA, Mr. M again scores 12. The neurologist notes that Mr. M answers questions a little slowly and pauses for thoughts when unable to find an answer. Mr. M has difficulty following some simple commands, such as “touch a finger to your nose.” Other in-office neurologic physical exams (cranial nerves, involuntary movements or tremors, sensation, muscle strength, reflexes, cerebellar signs) are unremarkable except for mildly decreased vibration sense of his toes. The neurologist concludes that Mr. M’s presentation is suggestive of subacute to chronic bradyphrenia and orders additional evaluation, including neuropsychological testing.

[polldaddy:11320114]

The authors’ observations

Physical and neurologic exams were not suggestive of any obvious causes of cognitive decline. Both the mental status exam and 2 serial MoCAs suggested deficits in executive function, language, and memory. Each of the differential diagnoses considered was ruled out with workup or exams (Table 2), which led to a most likely diagnosis of neurodegenerative disorder with PPA. Neuropsychological testing confirmed the diagnosis of nonfluent PPA.

Primary progressive aphasia

PPA is an uncommon, heterogeneous group of disorders stemming from focal degeneration of language-governing centers of the brain.^1,2 The estimated prevalence of PPA is 3 in 100,000 cases.^2,3 There are 4 major variants of PPA (Table 3⁴), and each presents with distinct language, cognitive, neuroanatomical, and neuropathological characteristics.⁴ PPA is usually diagnosed in late middle life; however, diagnosis is often delayed due to the relative obscurity of the disorder.⁴ In Mr. M’s case, it took approximately 4 months of evaluations by various specialists before a diagnosis was confirmed.

The initial phase of PPA can present as a diagnostic challenge because patients can have difficulty articulating their cognitive and language deficits. PPA can be commonly mistaken for a primary psychiatric disorder such as MDD or anxiety, which can further delay an accurate diagnosis and treatment. Special attention to the mental status exam, close observation of the patient’s language, and assessment of cognitive abilities using standardized screenings such as the MoCA or Mini-Mental State Examination can be helpful in clarifying the diagnosis. It is also important to rule out developmental problems (eg, dyslexia) and hearing difficulties, particularly in older patients.⁴

Continue to: TREATMENT Adjusting the medication regimen

The neurologist completes additional examinations to rule out causes of rare neurodegenerative disorders, including CSF autoimmune disorders, Creutzfeldt-Jakob disease, and Alzheimer disease (AD) (Table 4). Mr. M continues to follow up with his outpatient psychiatrist and his medication regimen is adjusted. Aripiprazole and buspirone are discontinued, and duloxetine is titrated to 60 mg twice a day. During follow-up visits, Mr. M discusses his understanding of his neurologic condition. His concerns shift to his illness and prognosis. During these visits, he continues to deny suicidality.

[polldaddy:11320115]

The authors’ observations

Mr. M’s neurodegenerative workup identified an intriguing diagnostic challenge. A repeat brain MRI (Figure) showed atrophy patterns suggestive of frontotemporal lobar degeneration (FTLD). On the other hand, his CSF ATI (A-beta 42/T-tau index, a value used to aid in the diagnosis of AD) was <1, suggesting early-onset AD.^5,6 Although significant advances have been made to distinguish AD and FTLD following an autopsy, there are still no reliable or definitive biomarkers to distinguish AD from FTLD (particularly in the early stages of FTLD). This can often leave the confirmatory diagnosis as a question.⁷

A PPA diagnosis (and other dementias) can have a significant impact on the patient and their family due to the uncertain nature of the progression of the disease and quality-of-life issues related to language and other cognitive deficits. Early identification and accurate diagnosis of PPA and its etiology (ie, AD vs FTLD) is important to avoid unnecessary exposure to medications or the use of polypharmacy to treat an inaccurate diagnosis of a primary psychiatric illness. For example, Mr. M was being treated with 3 psychiatric medications (aripiprazole, buspirone, and duloxetine) for depression and anxiety prior to the diagnosis of PPA.

Nonpharmacologic interventions can play an important role in the management of patients with PPA. These include educating the patient and their family about the diagnosis and discussions about future planning, including appropriate social support, employment, and finances.⁴ Pharmacologic interventions may be limited, as there are currently no disease-modifying treatments for PPA or FTLD. For patients with nonfluent PPA or AD, cholinesterase inhibitors such as donepezil or N-methyl-d-aspartate receptor antagonists such as memantine may be utilized, though benefits can be limited.⁴ Recent research has explored the role of transcranial magnetic stimulation and suggest short-term benefits, as have case reports of behavioral interventions targeting language.⁸

Psychiatrists should continue to treat patients with PPA for comorbid anxiety or depression, with appropriate medications and/or supportive therapy to guide the patient through the process of grief. Assessing for suicide risk is also important in patients diagnosed with dementia. A retrospective cohort study of patients age ≥60 with a diagnosis of dementia suggested that the majority of suicides occurred in those with a new dementia diagnosis.⁹ End-of-life decisions such as advanced directives should be made when the patient still has legal capacity, ideally as soon as possible after diagnosis.¹⁰

OUTCOME Remaining engaged in treatment

Mr. M continues to follow-up with the Neurology team. He has also been regularly seeing his psychiatric team for medication management and supportive therapy, and his psychiatric medications have been optimized to reduce polypharmacy. During his sessions, Mr. M discusses his grief and plans for the future. Despite his anxiety about the uncertainty of his prognosis, Mr. M continues to report that he is doing reasonably well and remains engaged in treatment.

Bottom Line

Patients with primary progressive aphasia and rare neurodegenerative disorders may present to an outpatient or emergency setting with symptoms of anxiety and confusion. They are frequently misdiagnosed with a primary psychiatric disorder due to the nature of cognitive and language deficits, particularly in the early stages of the disease. Paying close attention to language and conducting cognitive screening are critical in identifying the true cause of a patient’s symptoms.

Related Resources

• Primary progressive aphasia. National Center for Advancing Translational Sciences. Genetic and Rare Diseases Information Center. https://rarediseases.info.nih.gov/diseases/8541/primary-progressive-aphasia
• Moller MD, Parmenter BA, Lane DW. Neuropsychological testing: A useful but underutilized resource. Current Psychiatry. 2019;18(11):40-46,51.

Drug Brand Names

Aripiprazole • Abilify
Donepezil • Aricept
Duloxetine • Cymbalta
Memantine • Namenda

The American College of Physicians has issued new guidelines for managing acute major depressive disorder, suggesting those with moderate to severe depression may start with cognitive-behavioral therapy (CBT) alone or a second-generation antidepressant (SGA) alone.

The guidelines also state that patients with mild depression should start with CBT alone, and if a patient with moderate to severe depression prefers, they can use a combination of both CBT and an SGA.

These nuanced recommendations contrast sharply with the 2016 ACP guidelines for depression, which lumped all stages and severity levels together, and came with just one recommendation: Clinicians should choose between CBT and an SGA.

More data have come to light over the years, requiring the present update, reported lead author Amir Qaseem, MD, PhD, vice president of Clinical Policy and the Center for Evidence Reviews at the ACP, and adjunct faculty at Thomas Jefferson University, Philadelphia, and colleagues.

In addition to the focus on acute depression, Dr. Qaseem and colleagues highlighted the new guidelines' “consideration of patient values and preferences, and costs,” as well as responses to therapy.

Recommendations were derived from a network meta-analysis that included studies evaluating nonpharmacologic and pharmacologic therapies, the authors wrote in Annals of Internal Medicine. They compared effectiveness across a range of SGAs, “including selective serotonin reuptake inhibitors; serotonin-norepinephrine reuptake inhibitors; and others such as bupropion, mirtazapine, nefazodone, trazodone, vilazodone, and vortioxetine.”

This analysis yielded three pieces of clinical advice.

First, patients in the acute phase of mild depression should receive CBT alone as their initial treatment.

Dr. Qaseem and colleagues noted that many depression studies for pharmacologic therapies excluded these patients in favor of those with moderate to severe depression, leaving an evidence gap.

“Furthermore, the Clinical Guidelines Committee had concerns about adverse effects of SGAs in these patients and suggests that the use of SGAs as initial treatment of these patients should be based on additional considerations, such as limited access to or cost of CBT, history of moderate or severe major depressive disorder, or patient preferences,” they added.

The committee’s next recommendation, based on moderate-certainty evidence, suggested that CBT alone or an SGA alone should be considered for patients in the acute phase of moderate to severe depression. This call for monotherapy is balanced by a conditional recommendation based on low-certainty evidence that the same group may benefit from initial combination therapy with both CBT and an SGA.

“The informed decision on the options of monotherapy with CBT versus SGAs, or combination therapy, should be personalized and based on discussion of potential treatment benefits, harms, adverse effect profiles, cost, feasibility, patients’ specific symptoms (such as insomnia, hypersomnia, or fluctuation in appetite), comorbidities, concomitant medication use, and patient preferences,” the guidelines state.

The third and final recommendation offers an algorithm for patients who do not respond to initial therapy with an SGA. Multiple pathways are provided: Switch to CBT or augment with CBT; or switch to a different SGA or augment with a second pharmacologic therapy, such as mirtazapine, bupropion, or buspirone.

“These second-line treatment strategies show similar efficacy when compared with each other,” the guidelines committee noted.

Again, the guidelines suggest that second-line choices should be personalized based on the various factors previously discussed.

A timely update

“The new guideline is very different from the last guideline,” said Ryan Mire, MD, president of the ACP and practicing internal medicine physician in Nashville, Tenn. in a written comment. “ACP decided to update the depression guidelines with a focus on acute depression because approximately 70% of patients with major depressive disorder do not achieve remission and remain in the acute phase after the initial pharmacologic treatment attempt. In addition, there is new evidence on second-line treatments since the 2016 ACP guideline was published.”

Neil S. Skolnik, MD, of Thomas Jefferson University, Philadelphia, agreed that the guidelines offer a necessary and fresh perspective on caring for patients with depression.

“These guidelines are a helpful update, assuring us that we are using the latest, evidence-based therapies, and [they] are written in a practical, easy-to-implement manner,” Dr. Skolnik said in a written comment.

“First, the guidelines reaffirm that CBT is an effective first-line option, with or without the concurrent use of an SGA,” Dr. Skolnik said, noting that CBT alone may reduce likelihood of recurrence, compared with an SGA alone. “Many patients do not like the idea of medication, or the potential side effects of medications, and CBT is an evidenced-based approach that can be very helpful for patients.”

Dr. Skolnik also applauded the guidelines authors for offering a clear path forward for patients who do not have full remission after treatment – a common clinical scenario.

Valuable despite the gaps

Other experts expressed mixed impressions of the update, noting both highs and lows.

“Although [this guideline] has some gaps, it is more valuable in several ways than other widely consulted practice guidelines for depression,” wrote Miriam Shuchman, MD and Elia Abi-Jaoude, MSc, MD, PhD, of the University of Toronto, in an accompanying editorial.

Specifically, they praised the publication’s focus on shared decision-making in the treatment planning process.

“This effort to respond to patient preferences is crucial and may even increase the chance that patients will improve with treatment,” they wrote.

They also applauded the ACP’s efforts to recuse any committee members who may have had conflicts of interest “that could affect their judgment about treatments for depression.”

After highlighting these attributes, Dr. Shuchman and Dr. Abi-Jaoude noted that the guidelines still contain “significant gaps.”

Foremost, they pointed out the guidelines' emphasis on CBT to the exclusion of other nonpharmacologic options.

“The guideline does patients a disservice by leaving out several nonmedication treatment options that clinicians can offer as first- or second-line therapies,” they wrote.

This oversight may increase risk that patients simply hop from one SGA to another, which is a common, and often ineffective, strategy, according to Dr. Shuchman and Dr. Abi-Jaoude.

“Patients often go from one drug to the next in the hopes of landing on one that ‘works,’ ” the editorialists wrote. “This narrow clinical approach of pursuing medication-based treatments ignores the ways difficulties in a person’s work or relationships may contribute to their struggles with depression. At a time when the COVID-19 pandemic has underscored the importance of the social context of mental health, clinicians may need to consider other forms of support and tailor prescribing to what is most relevant and accessible for a particular patient.”

Dr. Shuchman and Dr. Abi-Jaoude went on to suggest several nonpharmacologic options beyond CBT, including interpersonal therapy, psychodynamic therapy, problem solving, behavioral activation, and guided self-help.

The other key gap they pointed out relates to withdrawal.

Although the guideline does advise physicians to taper antidepressants to reduce risk of withdrawal, the editorialists suggested that this recommendation lacked sufficient emphasis, as it can be a particularly difficult period in the treatment process.

“Tapering of an antidepressant may need to be done over months or years, not weeks, and a patient may need to visit a compounding pharmacy to obtain doses of a second-generation antidepressant not marketed by drug manufacturers so that prescriptions can be tapered even more slowly,” they suggested.

Financial costs remain unclear

Beyond the above medical considerations, one other piece of the depression puzzle remains unsolved: cost.

In a simultaneously published rapid review, Andreea Dobrescu, MD, PhD, of Cochrane Austria, and colleagues evaluated the relative cost-effectiveness of first- and second-step treatment strategies.

For most comparisons, evidence was insufficient to reach a conclusion, although they suggested that CBT may be more cost effective at the 5-year mark.

“For most pharmacologic and nonpharmacologic interventions for major depressive disorder, evidence was missing or was insufficient to draw conclusions about the cost-effectiveness of first- or second-step treatments for MDD,” Dr. Dobrescu and colleagues wrote. “The strongest evidence (albeit still low certainty of evidence) was for the cost-effectiveness of CBT compared with SGA as a first-step treatment over a 5-year time horizon from the societal and health care sector perspectives. However, this evidence should also be interpreted cautiously considering it is based on a single study.”

When asked about the financial findings, Dr. Mire agreed that more data are needed, especially because CBT and SGA costs range widely. He suggested that cost, for each patient, should be considered in the personalized approach now highlighted by the new guidelines.

The guidelines and the Cochrane cost-effectiveness study were supported by the ACP. The guidelines' authors and other individuals quoted in this article reported no conflicts of interest.

The American College of Physicians has issued new guidelines for managing acute major depressive disorder, suggesting those with moderate to severe depression may start with cognitive-behavioral therapy (CBT) alone or a second-generation antidepressant (SGA) alone.

The guidelines also state that patients with mild depression should start with CBT alone, and if a patient with moderate to severe depression prefers, they can use a combination of both CBT and an SGA.

These nuanced recommendations contrast sharply with the 2016 ACP guidelines for depression, which lumped all stages and severity levels together, and came with just one recommendation: Clinicians should choose between CBT and an SGA.

More data have come to light over the years, requiring the present update, reported lead author Amir Qaseem, MD, PhD, vice president of Clinical Policy and the Center for Evidence Reviews at the ACP, and adjunct faculty at Thomas Jefferson University, Philadelphia, and colleagues.

In addition to the focus on acute depression, Dr. Qaseem and colleagues highlighted the new guidelines' “consideration of patient values and preferences, and costs,” as well as responses to therapy.

Recommendations were derived from a network meta-analysis that included studies evaluating nonpharmacologic and pharmacologic therapies, the authors wrote in Annals of Internal Medicine. They compared effectiveness across a range of SGAs, “including selective serotonin reuptake inhibitors; serotonin-norepinephrine reuptake inhibitors; and others such as bupropion, mirtazapine, nefazodone, trazodone, vilazodone, and vortioxetine.”

This analysis yielded three pieces of clinical advice.

First, patients in the acute phase of mild depression should receive CBT alone as their initial treatment.

Dr. Qaseem and colleagues noted that many depression studies for pharmacologic therapies excluded these patients in favor of those with moderate to severe depression, leaving an evidence gap.

“Furthermore, the Clinical Guidelines Committee had concerns about adverse effects of SGAs in these patients and suggests that the use of SGAs as initial treatment of these patients should be based on additional considerations, such as limited access to or cost of CBT, history of moderate or severe major depressive disorder, or patient preferences,” they added.

The committee’s next recommendation, based on moderate-certainty evidence, suggested that CBT alone or an SGA alone should be considered for patients in the acute phase of moderate to severe depression. This call for monotherapy is balanced by a conditional recommendation based on low-certainty evidence that the same group may benefit from initial combination therapy with both CBT and an SGA.

“The informed decision on the options of monotherapy with CBT versus SGAs, or combination therapy, should be personalized and based on discussion of potential treatment benefits, harms, adverse effect profiles, cost, feasibility, patients’ specific symptoms (such as insomnia, hypersomnia, or fluctuation in appetite), comorbidities, concomitant medication use, and patient preferences,” the guidelines state.

The third and final recommendation offers an algorithm for patients who do not respond to initial therapy with an SGA. Multiple pathways are provided: Switch to CBT or augment with CBT; or switch to a different SGA or augment with a second pharmacologic therapy, such as mirtazapine, bupropion, or buspirone.

“These second-line treatment strategies show similar efficacy when compared with each other,” the guidelines committee noted.

Again, the guidelines suggest that second-line choices should be personalized based on the various factors previously discussed.

A timely update

“The new guideline is very different from the last guideline,” said Ryan Mire, MD, president of the ACP and practicing internal medicine physician in Nashville, Tenn. in a written comment. “ACP decided to update the depression guidelines with a focus on acute depression because approximately 70% of patients with major depressive disorder do not achieve remission and remain in the acute phase after the initial pharmacologic treatment attempt. In addition, there is new evidence on second-line treatments since the 2016 ACP guideline was published.”

Neil S. Skolnik, MD, of Thomas Jefferson University, Philadelphia, agreed that the guidelines offer a necessary and fresh perspective on caring for patients with depression.

“These guidelines are a helpful update, assuring us that we are using the latest, evidence-based therapies, and [they] are written in a practical, easy-to-implement manner,” Dr. Skolnik said in a written comment.

“First, the guidelines reaffirm that CBT is an effective first-line option, with or without the concurrent use of an SGA,” Dr. Skolnik said, noting that CBT alone may reduce likelihood of recurrence, compared with an SGA alone. “Many patients do not like the idea of medication, or the potential side effects of medications, and CBT is an evidenced-based approach that can be very helpful for patients.”

Dr. Skolnik also applauded the guidelines authors for offering a clear path forward for patients who do not have full remission after treatment – a common clinical scenario.

Valuable despite the gaps

Other experts expressed mixed impressions of the update, noting both highs and lows.

“Although [this guideline] has some gaps, it is more valuable in several ways than other widely consulted practice guidelines for depression,” wrote Miriam Shuchman, MD and Elia Abi-Jaoude, MSc, MD, PhD, of the University of Toronto, in an accompanying editorial.

Specifically, they praised the publication’s focus on shared decision-making in the treatment planning process.

“This effort to respond to patient preferences is crucial and may even increase the chance that patients will improve with treatment,” they wrote.

They also applauded the ACP’s efforts to recuse any committee members who may have had conflicts of interest “that could affect their judgment about treatments for depression.”

After highlighting these attributes, Dr. Shuchman and Dr. Abi-Jaoude noted that the guidelines still contain “significant gaps.”

Foremost, they pointed out the guidelines' emphasis on CBT to the exclusion of other nonpharmacologic options.

“The guideline does patients a disservice by leaving out several nonmedication treatment options that clinicians can offer as first- or second-line therapies,” they wrote.

This oversight may increase risk that patients simply hop from one SGA to another, which is a common, and often ineffective, strategy, according to Dr. Shuchman and Dr. Abi-Jaoude.

“Patients often go from one drug to the next in the hopes of landing on one that ‘works,’ ” the editorialists wrote. “This narrow clinical approach of pursuing medication-based treatments ignores the ways difficulties in a person’s work or relationships may contribute to their struggles with depression. At a time when the COVID-19 pandemic has underscored the importance of the social context of mental health, clinicians may need to consider other forms of support and tailor prescribing to what is most relevant and accessible for a particular patient.”

Dr. Shuchman and Dr. Abi-Jaoude went on to suggest several nonpharmacologic options beyond CBT, including interpersonal therapy, psychodynamic therapy, problem solving, behavioral activation, and guided self-help.

The other key gap they pointed out relates to withdrawal.

Although the guideline does advise physicians to taper antidepressants to reduce risk of withdrawal, the editorialists suggested that this recommendation lacked sufficient emphasis, as it can be a particularly difficult period in the treatment process.

“Tapering of an antidepressant may need to be done over months or years, not weeks, and a patient may need to visit a compounding pharmacy to obtain doses of a second-generation antidepressant not marketed by drug manufacturers so that prescriptions can be tapered even more slowly,” they suggested.

Financial costs remain unclear

Beyond the above medical considerations, one other piece of the depression puzzle remains unsolved: cost.

In a simultaneously published rapid review, Andreea Dobrescu, MD, PhD, of Cochrane Austria, and colleagues evaluated the relative cost-effectiveness of first- and second-step treatment strategies.

For most comparisons, evidence was insufficient to reach a conclusion, although they suggested that CBT may be more cost effective at the 5-year mark.

“For most pharmacologic and nonpharmacologic interventions for major depressive disorder, evidence was missing or was insufficient to draw conclusions about the cost-effectiveness of first- or second-step treatments for MDD,” Dr. Dobrescu and colleagues wrote. “The strongest evidence (albeit still low certainty of evidence) was for the cost-effectiveness of CBT compared with SGA as a first-step treatment over a 5-year time horizon from the societal and health care sector perspectives. However, this evidence should also be interpreted cautiously considering it is based on a single study.”

When asked about the financial findings, Dr. Mire agreed that more data are needed, especially because CBT and SGA costs range widely. He suggested that cost, for each patient, should be considered in the personalized approach now highlighted by the new guidelines.

The guidelines and the Cochrane cost-effectiveness study were supported by the ACP. The guidelines' authors and other individuals quoted in this article reported no conflicts of interest.

The American College of Physicians has issued new guidelines for managing acute major depressive disorder, suggesting those with moderate to severe depression may start with cognitive-behavioral therapy (CBT) alone or a second-generation antidepressant (SGA) alone.

The guidelines also state that patients with mild depression should start with CBT alone, and if a patient with moderate to severe depression prefers, they can use a combination of both CBT and an SGA.

These nuanced recommendations contrast sharply with the 2016 ACP guidelines for depression, which lumped all stages and severity levels together, and came with just one recommendation: Clinicians should choose between CBT and an SGA.

More data have come to light over the years, requiring the present update, reported lead author Amir Qaseem, MD, PhD, vice president of Clinical Policy and the Center for Evidence Reviews at the ACP, and adjunct faculty at Thomas Jefferson University, Philadelphia, and colleagues.

In addition to the focus on acute depression, Dr. Qaseem and colleagues highlighted the new guidelines' “consideration of patient values and preferences, and costs,” as well as responses to therapy.

Recommendations were derived from a network meta-analysis that included studies evaluating nonpharmacologic and pharmacologic therapies, the authors wrote in Annals of Internal Medicine. They compared effectiveness across a range of SGAs, “including selective serotonin reuptake inhibitors; serotonin-norepinephrine reuptake inhibitors; and others such as bupropion, mirtazapine, nefazodone, trazodone, vilazodone, and vortioxetine.”

This analysis yielded three pieces of clinical advice.

First, patients in the acute phase of mild depression should receive CBT alone as their initial treatment.

Dr. Qaseem and colleagues noted that many depression studies for pharmacologic therapies excluded these patients in favor of those with moderate to severe depression, leaving an evidence gap.

“Furthermore, the Clinical Guidelines Committee had concerns about adverse effects of SGAs in these patients and suggests that the use of SGAs as initial treatment of these patients should be based on additional considerations, such as limited access to or cost of CBT, history of moderate or severe major depressive disorder, or patient preferences,” they added.

The committee’s next recommendation, based on moderate-certainty evidence, suggested that CBT alone or an SGA alone should be considered for patients in the acute phase of moderate to severe depression. This call for monotherapy is balanced by a conditional recommendation based on low-certainty evidence that the same group may benefit from initial combination therapy with both CBT and an SGA.

“The informed decision on the options of monotherapy with CBT versus SGAs, or combination therapy, should be personalized and based on discussion of potential treatment benefits, harms, adverse effect profiles, cost, feasibility, patients’ specific symptoms (such as insomnia, hypersomnia, or fluctuation in appetite), comorbidities, concomitant medication use, and patient preferences,” the guidelines state.

The third and final recommendation offers an algorithm for patients who do not respond to initial therapy with an SGA. Multiple pathways are provided: Switch to CBT or augment with CBT; or switch to a different SGA or augment with a second pharmacologic therapy, such as mirtazapine, bupropion, or buspirone.

“These second-line treatment strategies show similar efficacy when compared with each other,” the guidelines committee noted.

Again, the guidelines suggest that second-line choices should be personalized based on the various factors previously discussed.

A timely update

“The new guideline is very different from the last guideline,” said Ryan Mire, MD, president of the ACP and practicing internal medicine physician in Nashville, Tenn. in a written comment. “ACP decided to update the depression guidelines with a focus on acute depression because approximately 70% of patients with major depressive disorder do not achieve remission and remain in the acute phase after the initial pharmacologic treatment attempt. In addition, there is new evidence on second-line treatments since the 2016 ACP guideline was published.”

Neil S. Skolnik, MD, of Thomas Jefferson University, Philadelphia, agreed that the guidelines offer a necessary and fresh perspective on caring for patients with depression.

“These guidelines are a helpful update, assuring us that we are using the latest, evidence-based therapies, and [they] are written in a practical, easy-to-implement manner,” Dr. Skolnik said in a written comment.

“First, the guidelines reaffirm that CBT is an effective first-line option, with or without the concurrent use of an SGA,” Dr. Skolnik said, noting that CBT alone may reduce likelihood of recurrence, compared with an SGA alone. “Many patients do not like the idea of medication, or the potential side effects of medications, and CBT is an evidenced-based approach that can be very helpful for patients.”

Dr. Skolnik also applauded the guidelines authors for offering a clear path forward for patients who do not have full remission after treatment – a common clinical scenario.

Valuable despite the gaps

Other experts expressed mixed impressions of the update, noting both highs and lows.

“Although [this guideline] has some gaps, it is more valuable in several ways than other widely consulted practice guidelines for depression,” wrote Miriam Shuchman, MD and Elia Abi-Jaoude, MSc, MD, PhD, of the University of Toronto, in an accompanying editorial.

Specifically, they praised the publication’s focus on shared decision-making in the treatment planning process.

“This effort to respond to patient preferences is crucial and may even increase the chance that patients will improve with treatment,” they wrote.

They also applauded the ACP’s efforts to recuse any committee members who may have had conflicts of interest “that could affect their judgment about treatments for depression.”

After highlighting these attributes, Dr. Shuchman and Dr. Abi-Jaoude noted that the guidelines still contain “significant gaps.”

Foremost, they pointed out the guidelines' emphasis on CBT to the exclusion of other nonpharmacologic options.

“The guideline does patients a disservice by leaving out several nonmedication treatment options that clinicians can offer as first- or second-line therapies,” they wrote.

This oversight may increase risk that patients simply hop from one SGA to another, which is a common, and often ineffective, strategy, according to Dr. Shuchman and Dr. Abi-Jaoude.

“Patients often go from one drug to the next in the hopes of landing on one that ‘works,’ ” the editorialists wrote. “This narrow clinical approach of pursuing medication-based treatments ignores the ways difficulties in a person’s work or relationships may contribute to their struggles with depression. At a time when the COVID-19 pandemic has underscored the importance of the social context of mental health, clinicians may need to consider other forms of support and tailor prescribing to what is most relevant and accessible for a particular patient.”

Dr. Shuchman and Dr. Abi-Jaoude went on to suggest several nonpharmacologic options beyond CBT, including interpersonal therapy, psychodynamic therapy, problem solving, behavioral activation, and guided self-help.

The other key gap they pointed out relates to withdrawal.

Although the guideline does advise physicians to taper antidepressants to reduce risk of withdrawal, the editorialists suggested that this recommendation lacked sufficient emphasis, as it can be a particularly difficult period in the treatment process.

“Tapering of an antidepressant may need to be done over months or years, not weeks, and a patient may need to visit a compounding pharmacy to obtain doses of a second-generation antidepressant not marketed by drug manufacturers so that prescriptions can be tapered even more slowly,” they suggested.

Financial costs remain unclear

Beyond the above medical considerations, one other piece of the depression puzzle remains unsolved: cost.

In a simultaneously published rapid review, Andreea Dobrescu, MD, PhD, of Cochrane Austria, and colleagues evaluated the relative cost-effectiveness of first- and second-step treatment strategies.

For most comparisons, evidence was insufficient to reach a conclusion, although they suggested that CBT may be more cost effective at the 5-year mark.

“For most pharmacologic and nonpharmacologic interventions for major depressive disorder, evidence was missing or was insufficient to draw conclusions about the cost-effectiveness of first- or second-step treatments for MDD,” Dr. Dobrescu and colleagues wrote. “The strongest evidence (albeit still low certainty of evidence) was for the cost-effectiveness of CBT compared with SGA as a first-step treatment over a 5-year time horizon from the societal and health care sector perspectives. However, this evidence should also be interpreted cautiously considering it is based on a single study.”

When asked about the financial findings, Dr. Mire agreed that more data are needed, especially because CBT and SGA costs range widely. He suggested that cost, for each patient, should be considered in the personalized approach now highlighted by the new guidelines.

The guidelines and the Cochrane cost-effectiveness study were supported by the ACP. The guidelines' authors and other individuals quoted in this article reported no conflicts of interest.

Patients with borderline personality disorder and major depressive episodes had a longer time to depression remission than patients with major depressive disorder or bipolar disorder who had major depressive episodes, based on data from 95 individuals.

Major depressive episodes (MDEs) occur in major depressive disorder (MDD) and bipolar disorder (BD), John J. Söderholm, MD, of the University of Helsinki and colleagues wrote. Borderline personality disorder (BPD) includes an increased risk for depression, but data on the relationship between BPD symptoms and depressive illness are limited. In particular, they noted “a lack of studies prospectively comparing the presence of (hypo)manic symptoms over time during the recovery process from MDE between MDD, MDE/BD, and MDE/BPD patients.”

John J. Söderholm

In a cohort study published in the Journal of Affective Disorders, the researchers collected data from 39 adult MDE patients with MDD, 33 with BD, and 23 with BPD. The patients were diagnosed with MDE using the SCID-I/P and SCID-II interviews, mixed symptoms were identified using the Mix-MDE scale, and borderline symptoms were identified using the Borderline Personality Disorder Severity Index.

Over a 6-month follow-up period, the participants completed biweekly online assessments. The primary outcomes were time to first full remission of symptoms and duration and nature of mood episodes.

Overall, the mean number of distinct mood states was 5.75, and the median duration was 60.9 days. When identified by subcohorts, the median number of mood state periods for MDD, BD, and BPD was 4.49, 8.05, and 4.67, respectively. The median durations were 69.2 days, 40.30 days, and 75.6 days, respectively.

The rates of remission for depressive symptoms were similar for MDD, MDE/BD, and MDE/BPD patients. However, MDE/BD patients had a significantly shorter time to first remission (hazard ratio, 2.44). Patients in the BPD group had a significantly longer time to first remission (HR, 0.95).

“When the cohort was divided into quintiles according to BPD feature severity, there was an approximately 1-month difference in time to first period of remission between the first and third and between the third and fifth quintiles, with longer times seen in patients with more severe BPD symptoms,” the researchers wrote.

The study findings were limited by several factors including the small sample size and short follow-up period that prevented investigation of depressive recurrence, the researchers noted. Other limitations included the lack of diagnostic blinding and variation in patients’ treatment schedules.

However, the results were strengthened by the representative samples of subjects with various disorders, the prospective and multimodal assessment of affective states, and the comparison of three patient groups in a single study.

As BPD was associated with a longer time to remission from depressive symptoms, the results suggest that BPD severity may be an indicator of more severe disease in patients with MDD in the context of depression, the researchers concluded.

The study was supported by the Finska Lakaresallskapet, the City of Helsinki, the Hospital District of Helsinki and Uusimaa, and the Finnish Psychiatric Association. The researchers had no financial conflicts to disclose.

Patients with borderline personality disorder and major depressive episodes had a longer time to depression remission than patients with major depressive disorder or bipolar disorder who had major depressive episodes, based on data from 95 individuals.

Major depressive episodes (MDEs) occur in major depressive disorder (MDD) and bipolar disorder (BD), John J. Söderholm, MD, of the University of Helsinki and colleagues wrote. Borderline personality disorder (BPD) includes an increased risk for depression, but data on the relationship between BPD symptoms and depressive illness are limited. In particular, they noted “a lack of studies prospectively comparing the presence of (hypo)manic symptoms over time during the recovery process from MDE between MDD, MDE/BD, and MDE/BPD patients.”

John J. Söderholm

In a cohort study published in the Journal of Affective Disorders, the researchers collected data from 39 adult MDE patients with MDD, 33 with BD, and 23 with BPD. The patients were diagnosed with MDE using the SCID-I/P and SCID-II interviews, mixed symptoms were identified using the Mix-MDE scale, and borderline symptoms were identified using the Borderline Personality Disorder Severity Index.

Over a 6-month follow-up period, the participants completed biweekly online assessments. The primary outcomes were time to first full remission of symptoms and duration and nature of mood episodes.

Overall, the mean number of distinct mood states was 5.75, and the median duration was 60.9 days. When identified by subcohorts, the median number of mood state periods for MDD, BD, and BPD was 4.49, 8.05, and 4.67, respectively. The median durations were 69.2 days, 40.30 days, and 75.6 days, respectively.

The rates of remission for depressive symptoms were similar for MDD, MDE/BD, and MDE/BPD patients. However, MDE/BD patients had a significantly shorter time to first remission (hazard ratio, 2.44). Patients in the BPD group had a significantly longer time to first remission (HR, 0.95).

“When the cohort was divided into quintiles according to BPD feature severity, there was an approximately 1-month difference in time to first period of remission between the first and third and between the third and fifth quintiles, with longer times seen in patients with more severe BPD symptoms,” the researchers wrote.

The study findings were limited by several factors including the small sample size and short follow-up period that prevented investigation of depressive recurrence, the researchers noted. Other limitations included the lack of diagnostic blinding and variation in patients’ treatment schedules.

However, the results were strengthened by the representative samples of subjects with various disorders, the prospective and multimodal assessment of affective states, and the comparison of three patient groups in a single study.

As BPD was associated with a longer time to remission from depressive symptoms, the results suggest that BPD severity may be an indicator of more severe disease in patients with MDD in the context of depression, the researchers concluded.

The study was supported by the Finska Lakaresallskapet, the City of Helsinki, the Hospital District of Helsinki and Uusimaa, and the Finnish Psychiatric Association. The researchers had no financial conflicts to disclose.

Patients with borderline personality disorder and major depressive episodes had a longer time to depression remission than patients with major depressive disorder or bipolar disorder who had major depressive episodes, based on data from 95 individuals.

Major depressive episodes (MDEs) occur in major depressive disorder (MDD) and bipolar disorder (BD), John J. Söderholm, MD, of the University of Helsinki and colleagues wrote. Borderline personality disorder (BPD) includes an increased risk for depression, but data on the relationship between BPD symptoms and depressive illness are limited. In particular, they noted “a lack of studies prospectively comparing the presence of (hypo)manic symptoms over time during the recovery process from MDE between MDD, MDE/BD, and MDE/BPD patients.”

John J. Söderholm

In a cohort study published in the Journal of Affective Disorders, the researchers collected data from 39 adult MDE patients with MDD, 33 with BD, and 23 with BPD. The patients were diagnosed with MDE using the SCID-I/P and SCID-II interviews, mixed symptoms were identified using the Mix-MDE scale, and borderline symptoms were identified using the Borderline Personality Disorder Severity Index.

Over a 6-month follow-up period, the participants completed biweekly online assessments. The primary outcomes were time to first full remission of symptoms and duration and nature of mood episodes.

Overall, the mean number of distinct mood states was 5.75, and the median duration was 60.9 days. When identified by subcohorts, the median number of mood state periods for MDD, BD, and BPD was 4.49, 8.05, and 4.67, respectively. The median durations were 69.2 days, 40.30 days, and 75.6 days, respectively.

The rates of remission for depressive symptoms were similar for MDD, MDE/BD, and MDE/BPD patients. However, MDE/BD patients had a significantly shorter time to first remission (hazard ratio, 2.44). Patients in the BPD group had a significantly longer time to first remission (HR, 0.95).

“When the cohort was divided into quintiles according to BPD feature severity, there was an approximately 1-month difference in time to first period of remission between the first and third and between the third and fifth quintiles, with longer times seen in patients with more severe BPD symptoms,” the researchers wrote.

The study findings were limited by several factors including the small sample size and short follow-up period that prevented investigation of depressive recurrence, the researchers noted. Other limitations included the lack of diagnostic blinding and variation in patients’ treatment schedules.

However, the results were strengthened by the representative samples of subjects with various disorders, the prospective and multimodal assessment of affective states, and the comparison of three patient groups in a single study.

As BPD was associated with a longer time to remission from depressive symptoms, the results suggest that BPD severity may be an indicator of more severe disease in patients with MDD in the context of depression, the researchers concluded.

The study was supported by the Finska Lakaresallskapet, the City of Helsinki, the Hospital District of Helsinki and Uusimaa, and the Finnish Psychiatric Association. The researchers had no financial conflicts to disclose.