A Study of Aticaprant 10 Milligrams (mg) as Adjunctive Therapy in Adult Participants With MDD With Moderate-to-severe Anhedonia and Inadequate Response to Current Antidepressant Therapy

Study Overview
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Brief Summary
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The purpose of this study is to evaluate the efficacy of aticaprant compared with placebo as adjunctive therapy to an antidepressant in improving depressive symptoms in adult participants with major depressive disorder (MDD) with moderate to severe anhedonia (ANH+) who have had an inadequate response to current antidepressant therapy with a selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI).

Detailed Description
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Depression is a common and serious psychiatric disorder which is a leading cause of disability worldwide and is associated with elevated mortality and suicide risk. Aticaprant (JNJ-67953964) is a once daily, highly selective kappa opioid receptor (KOR) antagonist, with demonstrated selectivity over mu opioid receptor (MOR) and delta opioid receptor (DOR) being developed for adjunctive treatment of MDD with ANH+. The total duration of the study will be up to 87 days. Safety evaluation including adverse events, physical examinations, urine drug test, alcohol breath tests and clinical laboratory tests will be assessed at specific time points during this study.

Official Title
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A Randomized, Double-blind, Multicenter, Parallel-group, Placebo-controlled Study to Evaluate the Efficacy, Safety, and Tolerability of Aticaprant 10 mg as Adjunctive Therapy in Adult Participants With Major Depressive Disorder (MDD) With Moderate-to-severe Anhedonia and Inadequate Response to Current Antidepressant Therapy

Conditions
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Depressive Disorder, Major, Anhedonia

Intervention / Treatment
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* Drug: Aticaprant
* Other: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Be medically stable on the basis of physical examination, medical history, vital signs, and 12-lead electrocardiogram (ECG) performed at screening and baseline Have a Hamilton depression rating Scale 17 item (HDRS-17) total score of 20 or higher at the first and second screening interviews and must not demonstrate a clinically significant improvement (that is, an improvement of more than 20 percent [%] on their HDRS-17 total score) between the first and the second independent HDRS-17 assessments Meet Diagnostic and Statistical Manual of Mental Disorders-5th edition (DSM-5) diagnostic criteria for recurrent or single episode major depressive disorder (MDD), without psychotic features, based upon clinical assessment and confirmed by the structural interview for DSM-5 Axis I disorders-clinical trials version (SCID-CT). Participants 65 years of age or older must have had the first onset of depression prior to 55 years of age Is currently receiving and tolerating well any one of the following selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI) for depressive symptoms at screening, in any approved formulation and available in the participating country/territory: citalopram, duloxetine, escitalopram, fluvoxamine, fluoxetine, milnacipran, levomilnacipran, paroxetine, sertraline, venlafaxine, desvenlafaxine at a stable dose (at or above the minimum therapeutic dose per Massachusetts General Hospital Antidepressant Treatment Response Questionnaire [MGH-ATRQ] for at least 6 weeks. The current antidepressant cannot be the first antidepressant treatment for the first lifetime episode of depression Participant's current major depressive episode, and antidepressant treatment response in the current depressive episode, must all be confirmed by the Site Independent Qualification Assessment Exclusion Criteria: Have had in the current depressive episode, no response (treatment failure) to 5 or more antidepressant treatments including the current SSRI/SNRI (that is, the one presumed to be continued in the treatment phase) assessed using the MGH-ATRQ Has a history or evidence of clinically meaningful noncompliance with current antidepressant therapy Has a history of moderate-to-severe substance use disorder including alcohol use disorder according to diagnostic and statistical manual of mental disorders-5th edition (DSM-5) criteria within 6 months before screening Has had in the current episode an inadequate response to adequate course of intravenous or intranasal ketamine or esketamine, electroconvulsive therapy (that is, at least 7 treatments), vagal nerve stimulation, or deep brain stimulation device Has current, or a history (past 6 months), of seizures Has a current homicidal ideation/intent, per the investigator's clinical judgment, or has suicidal ideation with some intent to act within 3 months prior to the start of the Screening Phase, per the investigator's clinical judgment or based on the Columbia Suicide Severity Rating Scale (C-SSRS), corresponding to a response of Yes on Item 4 (active suicidal ideation with some intent to act, without specific plan) or Item 5 (active suicidal ideation with specific plan and intent), or a history of suicidal behavior within the past 6 months prior to the start of the Screening Phase. Participants reporting suicidal ideation with intent to act or suicidal behavior at baseline should be excluded Has one or more of the following diagnoses: a) A diagnostic and statistical manual of mental disorders-5th edition (DSM-5) diagnosis (which has been the primary focus of psychiatric treatment within the past 2 years) of any of the following: panic disorder, generalized anxiety disorder social anxiety disorder, specific phobia; b) A current (in the past year) DSM-5 diagnosis of: obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), anorexia nervosa, bulimia nervosa; c) A current or prior (lifetime) DSM-5 diagnosis of: a psychotic disorder or major depressive disorder (MDD) with psychotic features, bipolar or related disorders, intellectual disability, autism spectrum disorder, borderline personality disorder, antisocial personality disorder, histrionic personality disorder, narcissistic personality disorders, somatoform disorders

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 74 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Aticaprant<br>Participants will receive Aticaprant 10 milligrams (mg) tablet orally, once daily for 42 days during double-blind (DB) treatment phase in addition to their current antidepressant selective serotonin reuptake inhibitor/serotonin-norepinephrine reuptake inhibitor (SSRI/SNRI) therapy. Participants who will complete the DB treatment phase (Day 43) may be eligible to participate in a separate 52-week open-label long-term safety study 67953964MDD3003. | Drug: Aticaprant<br>* Aticaprant tablet will be administered orally.<br>* Other names: JNJ-67953964;|
| Placebo Comparator: Placebo<br>Participants will receive matching placebo tablet orally, once daily for 42 days during DB treatment phase in addition to their current antidepressant SSRI/SNRI therapy. Participants who will complete the DB treatment phase (Day 43) may be eligible to participate in a separate 52-week open-label long-term safety study 67953964MDD3003. | Other: Placebo<br>* Placebo tablet will be administered orally.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change From Baseline in Montgomery-Asberg Depression Rating Scale (MADRS) Total Score to Day 43 | Change from baseline in MADRS total score to Day 43 will be reported. The MADRS is a clinician-rated scale designed to measure depression severity and detects changes due to antidepressant treatment. The scale consists of 10 items, each of which is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score of 60. Higher scores represent a more severe condition. | Baseline to Day 43 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change From Baseline in Dimensional Anhedonia Rating Scale (DARS) Total Score to Day 43 | Change from baseline in DARS total score to Day 43 will be reported. DARS is a 17-item self-report questionnaire that is designed to assess anhedonia in major depressive disorder (MDD), and particularly to increase scale generalizability while maintaining specificity. Respondents provide their own examples of rewarding experiences across the domains of hobbies, social activities, food/drink, and sensory experience. Participants answer a set of standardized questions about desire, motivation, effort and consummatory pleasure with a recall period of right now for the examples provided. The instrument is scored on 0 (not at all) to 4 (very much) and the total score is calculated as a sum of all items (range 0-68) with higher scores reflecting increased motivation, effort and pleasure (that is, less anhedonia). | Baseline to Day 43 | 
| Change From Baseline in MADRS Total Score over Time | Change from baseline in MADRS total score over time will be reported. The MADRS is a clinician-rated scale designed to measure depression severity and detects changes due to antidepressant treatment. The scale consists of 10 items, each of which is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score of 60. Higher scores represent a more severe condition. | Baseline up to Day 57 | 
| Percentage of Responders on Depressive Symptoms Scale from Baseline to Day 43 as Assessed by MADRS Total Score | Percentage of responders on depressive symptoms scale, defined as a greater than or equal to (>=) 50 percent (%) improvement in MADRS total score from baseline to Day 43 will be reported. The MADRS is a clinician-rated scale designed to measure depression severity and detects changes due to antidepressant treatment. The scale consists of 10 items, each of which is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score of 60. Higher scores represent a more severe condition. | Baseline to Day 43 | 
| Percentage of Participants With Remission of Depressive Symptoms at Day 43 as Assessed by MADRS Total Score | Percentage of participants with remission of depressive symptoms, defined as a MADRS total score of less than or equal to (<=) 10 at Day 43 will be reported. The MADRS is a clinician-rated scale designed to measure depression severity and detects changes due to antidepressant treatment. The scale consists of 10 items, each of which is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score of 60. Higher scores represent a more severe condition. | Day 43 | 
| Change From Baseline in Patient Health Questionnaire, 9-item (PHQ-9) Total Score to Day 43 | Change from baseline in PHQ-9 total score to Day 43 will be reported. The 9-item PHQ-9 scale scores each of the 9 symptom domains of the diagnostic and statistical manual of mental disorders-5th edition (DSM-5) MDD criteria and it is used both as a screening tool and a measure of response to treatment for depression. Each item is rated on a 4-point scale (0=not at all, 1=several days, 2=more than half the days, and 3=nearly every day). The participant's item responses are summed to provide a total score (range of 0 to 27), with higher scores indicating greater severity of depressive symptoms. | Baseline to Day 43 | 
| Change From Baseline in DARS Total Score Over Time | Change from baseline in DARS total score over time will be reported. DARS is a 17-item self-report questionnaire that was designed to assess anhedonia in MDD, and particularly to increase scale generalizability while maintaining specificity. Respondents provide their own examples of rewarding experiences across the domains of hobbies, social activities, food/drink, and sensory experience. Participants answer a set of standardized questions about desire, motivation, effort and consummatory pleasure with a recall period of right now for the examples provided. The instrument is scored on 0 (not at all) to 4 (very much) and the total score is calculated as a sum of all items (range 0-68) with higher scores reflecting increased motivation, effort and pleasure (that is, less anhedonia). | Baseline up to Day 57 | 
| Change from Baseline in the PHQ-9 Anhedonia-specific Item (PHQ-9, Item 1) Over Time | Change from baseline in the PHQ-9 Anhedonia-specific item (PHQ-9, Item 1) over time will be reported. The 9-item PHQ-9 scale scores each of the 9 symptom domains of the DSM-5 MDD criteria and it is used both as a screening tool and a measure of response to treatment for depression: Each item is rated on a 4-point scale (0=not at all, 1=several days, 2=more than half the days, and 3=nearly every day). The participant's item responses are summed to provide a total score (range of 0 to 27), with higher scores indicating greater severity of depressive symptoms. | Baseline up to Day 57 | 
| Percentage of Participants With a Score Less than (<) 2 in the PHQ-9 Anhedonia-specific Item (PHQ-9, Item 1) at Day 43 | Percentage of participants with a score < 2 in the PHQ-9 Anhedonia-specific Item (PHQ-9, Item 1) at Day 43 will be reported. The 9-item PHQ-9 scale scores each of the 9 symptom domains of the DSM-5 MDD criteria and it is used both as a screening tool and a measure of response to treatment for depression. Each item is rated on a 4-point scale (0=not at all, 1=several days, 2=more than half the days, and 3=nearly every day). The participant's item responses are summed to provide a total score (range of 0 to 27), with higher scores indicating greater severity of depressive symptoms. | Day 43 | 
| Change From Baseline Over Time in the Patient-Reported Outcomes Measurement Information System (PROMIS) Short Form - Ability to Participate in Social Roles and Activities 8a (PROMIS-APS 8a) | The PROMIS-APS 8a includes items selected from the PROMIS item bank to provide an assessment of the current degree of involvement in one's usual social roles, activities, and responsibilities, including work, family, friends, and leisure. The 8-item short form will be used in this study, and responses to every item are in a 5-point ordinal scale ranging from 1 = Always to 5 = Never, with higher scores indicating better social functioning. The total scores of PROMIS-APS 8a are scaled on a T-score metric with a mean of 50 and a standard deviation (SD) of 10. | Baseline up to Day 57 |