This is a sequential multiple assignment randomized trial for adults (ages \> 18) with a bipolar disorder type 1 and type 2 diagnosis currently experiencing a depressive episode. It is a randomized pragmatic trial that will compare four commonly prescribed treatments for bipolar depression, which includes three FDA-approved medications (Cariprazine, Quetiapine and Lurasidone) and one antipsychotic/antidepressant combination (Aripiprazole/Escitalopram).
This is a comparative effectiveness study to address the critical questions of how best to treat people with bipolar disorder who have a major depressive episode: how to get them well, provide second-line treatment when they don't initially get well, and keep them well after they get well. This is a multisite Sequential Multiple Assignment Randomized Trial (SMART) comparative effectiveness design. Investigators will recruit 2726 participants who have BD I or II with a current major depressive episode lasting at least 2 weeks. In Stage 1, investigators will compare four treatment arms, including three FDA approved monotherapies and the most widely used, but understudied, treatment for BD major depressive episode (i.e., a non-FDA approved combination of an antipsychotic and antidepressant). In Stage 2, participants who do not remit will be re-randomized to treatments not used in Stage 1. Investigators will follow all participants for a total of 52 weeks. This study will be conducted in two phases, a feasibility phase and a full study phase. In the feasibility phase, investigators will recruit at 8 of the 19 study sites based on readiness and interest, to ensure the efficacy of the study design before launching the full study phase. Feasibility Aim 1: To ensure that 8 of the 19 selected sites can recruit, randomize, and retain participants. During the feasibility phase, the selected sites will recruit 133 participants, administer baseline assessments, randomize the participants (at baseline and again at 6-weeks for non-remitters), and conduct follow-up assessments at the end of Stage 1 (6-weeks) and the end of Stage 2 (12-weeks) and end of study (52 weeks or end of feasibility phase, whichever is sooner) and all other scheduled visits. Feasibility Aim 2: To refine and finalize all study standard operating procedures for the full-scale study. After Aim 1 is complete, any changes in standard operating procedures will be made as needed to be implemented in the full study phase. Full Scale Study Full-Scale Study Aim 1: To compare the effectiveness, tolerability, and safety of the four treatments for BD major depressive episodes. Hypothesis 1a: There will be significant differences across the Stage 1 treatments in the proportion of remitters at week 6 (primary endpoint, effectiveness) and in the average adverse event burden and suicidal ideation/behavior at week 6 (secondary endpoints, tolerability and safety). Hypothesis 1b: Among non-remitters of a given Stage 1 treatment (i.e., participants who do not remit by week 6), there will be significant differences across the three remaining Stage 2 treatments in the proportion of remitters at week 12 (primary endpoint, effectiveness) and the average side effect burden and suicidal ideation/behavior at week 12 (secondary endpoints, tolerability and safety). Full-Scale Study Aim 2: To characterize the effectiveness, tolerability, and safety of the 12 adaptive interventions for BD major depressive episodes embedded within the SMART design. Hypothesis 2: On average, there will be significant differences across the 12 embedded adaptive interventions in the proportion of remitters at week 12 (primary endpoint, effectiveness) and in the average side effect burden and suicidal ideation/behavior at week 12 (secondary endpoints, tolerability and safety). Full-Scale Study Aim 3: To determine individual-level characteristics that predict heterogeneity of treatment effect (HTE) across the 12 adaptive interventions for BD major depressive episodes embedded within the SMART design. Hypothesis 3a: Individual-level characteristics and symptoms assessed at baseline as well as symptom changes and side effect profiles at week 6 will predict HTE at weeks 12 and 52. Hypothesis 3b: Investigators hypothesize that an optimal personalized adaptive intervention will perform significantly better than the best aggregate embedded adaptive intervention identified in Aim 2 in terms of the proportion of remitters at week 12 (primary endpoint, effectiveness) and the side effect burden and suicidal ideation/behavior at week 12 (secondary endpoints, tolerability and safety).
1. Cariprazine monotherapy outperformed placebo in improving depressive symptoms in most large randomized control trials (RCT). Pooled data showed higher remission rates (30.2%) with cariprazine (1.5 mg and 3 mg/day) compared to placebo (20.9%). Its efficacy extends to bipolar I depression, including mixed features and anxiety. 2. Common adverse effects include nausea (8%) and akathisia (7%). Somnolence and sedation were slightly more common with cariprazine than placebo. 3. Results from a large RCT evaluating cariprazine for bipolar disorder maintenance treatment (NCT03573297) are awaited. An open-label trial reported reduced manic symptoms over 16 weeks. 4. Cariprazine is a D3-preferring partial agonist for D3 and D2 receptors. It antagonizes 5-HT2A and 5-HT2B receptors and partially agonizes 5-HT1A receptors. Affinity for 5-HT1C and histamine 1 receptors is low to moderate.
1. 40-70% of bipolar patients use antidepressants, often with antipsychotics or mood stabilizers. Aripiprazole lacks efficacy in bipolar depression but is used for mania. Escitalopram, studied alongside mood stabilizers, showed some efficacy. 2. Aripiprazole in bipolar depression trials led to higher rates of akathisia, insomnia, nausea, fatigue, and impulse control disorders. Escitalopram's is generally safe but adverse effects include nausea, diarrhea, insomnia, dry mouth, ejaculatory dysfunction and dizziness. 3. Aripiprazole monotherapy in bipolar I patients reduced relapse rates and delayed relapse time, but not for depressive episodes. 4. Aripiprazole acts as a partial agonist at D2, D3, 5-HT1A, and 5-HT2C receptors, with antagonistic effects on α1 and possibly H1 receptors. Escitalopram is highly selective for the serotonin transporter, with no significant activity at other receptors.
University of Alabama Birmingham
Birmingham, Alabama, United States
Steve Strakowski
Bloomington, Indiana, United States
The Remission from Depression Questionnaire
RDQ is a 41 items self report questionnaire used to assess the seven domains found in extensive previous research to be important to patients: depressive symptoms, anxiety, coping ability, positive mental health, functioning, life satisfaction and a general sense of well-being. Using a score of 27 as the cutoff, the RDQ scale has a sensitivity of 83.7% and specificity of 77.9% in predicting self-reported remission status. The RDQ has excellent internal consistency reliability (Cronbach's alpha of 0.97 for the total scale and above 0.80 for each of the 7 subscales with test-retest reliability of the total scale = 0.85 and \> 0.60 for each subscale). The primary outcome will be remission as defined by a RDQ score \< 27. This test will be administered in all assessment visits. The RDQ scale ranges from 0-27 per domain, with higher scores indicating greater remission rates.
Time frame: Investigators will administer this measure every 2 weeks for the first 12 weeks (weeks:0,2,4,6,8,10,12), and then at each study visit during the follow up phase until they are discharged from the study (weeks:20,28,36,44,52 ).
Safety: Concise Health Risk Tracking Scale
CHRT is a 14 item self-report measure of suicidal ideation and behavior in individuals with mood disorders. The CHRT has excellent psychometric properties, with an internal consistency reliability (Cronbach's alpha) of 0.78 and a consistent factor structure with 3 independent factors (current suicidal thoughts and plans, perceived lack of social support, and hopelessness). The range is from 14-70, higher scores reflect an increase in suicidality behaviors.
Time frame: Investigators will administer this measure every 2 weeks for the first 12 weeks (weeks:0,2,4,6,8,10,12), and then at each study visit during the follow up phase until they are discharged from the study (weeks:20,28,36,44,52 ).
Frequency and Intensity of Side Effects Ratings - Intensity
This subscale of the FIBSER scale is a reliable self-report measure of the intensity of side effects from medications in a population receiving treatment for depression. This scale measures the participants side effects intensity from the previous week and has them rate each on a scale from 0-6. The results will help the clinician determine the appropriate level of response. The range is from 0-6, higher scores reflect an greater intensity in medication side effects.
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Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
2,726
1. Both immediate and extended-release quetiapine monotherapies showed superiority over placebo in acute BD depression across three 8-week randomized trials, confirmed by meta-analysis. Quetiapine exhibited significantly higher remission rates (52.8%) compared to placebo (34.7%) and improved various aspects of life, including quality of life, clinical global impression, sleep, functioning, and anxiety. 2. Common adverse events of quetiapine include sedation, hypotension, increased appetite, weight gain, dyslipidemia, and elevated glucose levels, particularly in a population already at risk. 3. Four studies examined quetiapine's maintenance effects in patients with manic, mixed, or depressive episodes. Overall, quetiapine prolonged the time to recurrence for both depressive and manic episodes.
1. Lurasidone, either alone or with lithium/valproate, proved more effective than placebo for acute BD depression in two 6-week randomized trials. Remission rates were significantly higher with lurasidone monotherapy (40.9%) and in combination (50.3%) compared to placebo (24.7% and 35.4% respectively). Lurasidone also improved anxiety, quality of life, and disability. 2. Common mild adverse events included nausea, headache, akathisia, somnolence, sedation, dry mouth, and vomiting. Weight gain, dyslipidemia, and increased glucose levels were not observed. 3. In a 6-month double-blind discontinuation study post-acute treatment response, lurasidone combined with lithium/valproate prolonged time to depressive episode recurrence compared to placebo (hazard ratio: 0.68). Although not statistically significant due to low placebo recurrence and shorter follow-up, it hints at maintenance efficacy.
John Hopkins
Baltimore, Maryland, United States
McLean Hospital
Belmont, Massachusetts, United States
Massachusetts General Hospital
Boston, Massachusetts, United States
University of Michigan
Ann Arbor, Michigan, United States
Nagy Youssef
Grand Rapids, Michigan, United States
University of New Mexico Health Sciences Center Albuquerque
Albuquerque, New Mexico, United States
New York University Grossman School of Medicine NYU
New York, New York, United States
Montefiore Medical Center and Albert Einstein College of Medicine
New York, New York, United States
...and 8 more locations
Time frame: Investigators will administer this measure every 2 weeks for the first 12 weeks (weeks:0,2,4,6,8,10,12), and then at each study visit during the follow up phase until they are discharged from the study (weeks:20,28,36,44,52 ).
Frequency and Intensity of Side Effects Ratings - Frequency
This subscale of the FIBSER scale is a reliable and valid self-report measure on the frequency of medication side effects in a population receiving treatment for depression. This scale measures the participants side effects frequency from the previous week and has them rate each on a scale from 0-6. The results will help the clinician determine the appropriate level of response. The range is from 0-6, higher scores reflect an greater frequency in medication side effects.
Time frame: Investigators will administer this measure every 2 weeks for the first 12 weeks (weeks:0,2,4,6,8,10,12), and then at each study visit during the follow up phase until they are discharged from the study (weeks:20,28,36,44,52 ).
Frequency and Intensity of Side Effects Ratings - Burden
This subscale of the FIBSER scale is a reliable self-report measure of the side effects burden of medications in a population receiving treatment for depression. This scale measures the participants side effects burden from the previous week and has them rate each on a scale from 0-6. The results will help the clinician determine the appropriate level of response. The range is from 0-6, higher scores reflect an greater burden in medication side effects.
Time frame: Investigators will administer this measure every 2 weeks for the first 12 weeks (weeks:0,2,4,6,8,10,12), and then at each study visit during the follow up phase until they are discharged from the study (weeks:20,28,36,44,52 ).