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A Study to Compare the Efficacy, Safety, and Tolerability of JNJ-42847922 Versus Quetiapine Extended-Release as Adjunctive Therapy to Antidepressants in Adult Participants With Major Depressive Disorder Who Have Responded Inadequately to Antidepressant Therapy

A 6-Month, Multicenter, Double-Blind, Randomized, Flexible-Dose, Parallel-Group Study to Compare the Efficacy, Safety, and Tolerability of JNJ-42847922 Versus Quetiapine Extended-Release as Adjunctive Therapy to Antidepressants in Adult Subjects With Major Depressive Disorder Who Have Responded Inadequately to Antidepressant Therapy

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03321526
Enrollment
107
Registered
2017-10-25
Start date
2017-12-12
Completion date
2019-06-27
Last updated
2025-04-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Depressive Disorder, Major

Brief summary

The purpose of this study is to assess the efficacy of flexibly dosed JNJ-42847922 (20 milligram \[mg\] or 40 mg) compared to flexibly dosed quetiapine extended-release (XR) (150 mg or 300 mg) as adjunctive therapy to an antidepressant drug in delaying time to all-cause discontinuation of study drug over a 6-months (24 weeks) treatment period, in participants with major depressive disorder (MDD) who have had an inadequate response to current antidepressant therapy with a selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI).

Interventions

Participants will receive JNJ-42847922 capsule orally.

DRUGPlacebo Matching to JNJ-42847922

Participants will receive placebo capsule matching to JNJ-42847922 orally.

DRUGQuetiapine XR

Participants will receive quetiapine XR capsule orally.

DRUGPlacebo Matching to Quetiapine XR

Participants will receive placebo capsule matching to quetiapine XR orally.

Participants will receive SSRI antidepressant (such as, citalopram, escitalopram, fluvoxamine, fluoxetine, paroxetine, sertraline, vilazodone or vortioxetine) as a part of background therapy (at the same dose, without change, every day and at approximately the same time as prior to entering the study) throughout the screening, double-blind, and follow-up phases (approximately up to Week 26).

DRUGSerotonin-Norepinephrine Reuptake Inhibitor (SNRI)

Participants will receive SNRI antidepressant (such as duloxetine, milnacipran, levomilnacipran, venlafaxine, desvenlafaxine) as a part of background therapy (at the same dose, without change, every day and at approximately the same time as prior to entering the study) throughout the screening, double-blind, and follow-up phases (approximately up to Week 26).

Sponsors

Janssen Research & Development, LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* Male or female of non-childbearing potential (WONCBP) outpatients, aged 18 to 70 years (inclusive). A WONCBP is defined as: a).Postmenopausal: A postmenopausal state is defined as no menses for 12 months without an alternative medical cause. b). Permanently sterile: Permanent sterilization methods include hysterectomy, bilateral salpingectomy, bilateral tubal occlusion/ligation procedures, and bilateral oophorectomy. c). If reproductive status is questionable, additional evaluation should be considered * Meet Diagnostic and Statistical Manual of Mental Disorders-5th Edition (DSM-5) diagnostic criteria for major depressive disorder (MDD), without psychotic features, based upon clinical assessment and confirmed by the Structured Clinical Interview for DSM-5 Axis I Disorders- Clinical Trials Version (SCID-CT). The length of the current depressive episode must be less than or equal to (\<=) 18 months * Have had an inadequate response to at least 1 but no more than 3 antidepressants, administered at an adequate dose and duration in the current episode of depression, as assessed by the Massachusetts General Hospital-Antidepressant Treatment Response Questionnaire (MGH-ATRQ). An inadequate response is defined as less than (\<)50 percent (%) reduction in depressive symptom severity, as assessed by the MGH-ATRQ. An adequate trial is defined as an antidepressant treatment for at least 4 weeks at or above the minimum therapeutic dose, as specified in the MGH-ATRQ, for any particular antidepressant. The inadequate response must include the participant's current antidepressant treatment * Be receiving monotherapy treatment for depressive symptoms with 1 of the following selective serotonin reuptake inhibitor (SSRI)/serotonin-norepinephrine reuptake inhibitor (SNRI) antidepressants, in any formulation: citalopram, duloxetine, escitalopram, fluvoxamine, fluoxetine, milnacipran, levomilnacipran, paroxetine, sertraline, venlafaxine, desvenlafaxine, vilazodone, or vortioxetine at a stable dose (at or above the minimum therapeutic dose level) for at least 4 weeks, and for no greater than 12 months, at screening. Modification of an effective preexisting therapy should not be made for the explicit purpose of entering a participant into the study * Have a Montgomery-Asberg Depression Rating Scale (MADRS) total score greater than or equal to (\>=)25 (performed by independent, centralized remote raters) at screening and must not demonstrate a clinically significant improvement (that is, an improvement of greater than (\>)20% on their MADRS total score) from the screening to baseline visit * Have a Body Mass Index (BMI) between 18 and 35 kilogram per meter square (kg/m\^2) inclusive (BMI equal to \[=\] weight/height\^2) * Must be otherwise healthy on the basis of physical examination, medical history, vital signs, 12-lead electrocardiogram (ECG), and clinical laboratory tests performed at screening. If there are abnormalities, they must be consistent with the underlying illness in the study population. If the results of the clinical laboratory tests are outside the normal reference ranges, the participant may be included only if the investigator judges the abnormalities or deviations from normal to be not clinically significant or to be appropriate and reasonable for the population under study. This determination must be recorded in the participant's source documents and initialed by the investigator

Exclusion criteria

* Have Cushing's Disease, Addison's Disease, primary amenorrhea, or other evidence of significant medical disorders of the hypothalamic-pituitary-adrenal (HPA) axis * Have a history of epilepsy, neuroleptic malignant syndrome (NMS) or Tardive Dyskinesia * Have a history of previous non-response to an adequate trial of quetiapine as an adjunctive treatment for MDD (adequate trial defined as \>=150 mg for 4 weeks or more) and/or a history of lack of response to 3 or more adequate antidepressant treatments and/or a history or evidence of noncompliance with current antidepressant therapy * Have taken a known moderate or strong inhibitor/inducer of cytochrome P450 (CYP)3A4 and CYP2C9 or a dual inhibitor/inducer of CYP3A4 and CYP2C9 within 14 days (or after washout that is, duration of 5 times the drug's half-life) before the first study drug administration on Day 1 until the follow-up visit. Fluvoxamine is a moderate CYP2C9 inhibitor and a mild CYP3A inhibitor, and will not be excluded from the study * Have a history or current diagnosis of a psychotic disorder, bipolar disorder, intellectual disability, autism spectrum disorder, borderline personality disorder, somatoform disorders, or fibromyalgia

Design outcomes

Primary

MeasureTime frameDescription
Time to All-Cause Discontinuation of Study DrugUp to Week 24Time to all-cause discontinuation of study drug is defined as the number of days from the first dose of study drug to the last dose of study drug. Participants who completed double-blind treatment were not considered to have discontinued.

Secondary

MeasureTime frameDescription
Percentage of Participants With Shifts in Triglycerides From Normal to HighUp to Week 24Percentage of participants with shifts in triglycerides from normal to high (\<150 milligrams per deciliter \[mg/dL\] at baseline to \>=200 mg/dL at any post-baseline assessment) were reported.
Percentage of Participants With Sustained Response up to Week 24Up to Week 24A participant was defined as having achieved a sustained response if there was at least a 50% improvement from baseline in the MADRS total score at Week 12, and that response was maintained at Week 18 and Week 24. Participants who did not meet such criterion were considered as non-sustained responders. MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition.
Change From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline Insomnia Severity Index [ISI] Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score Less Than [<] 15) at Week 12Baseline and Week 12MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition. The ISI has 7 questions, each rated on a 5-point Likert scale ranging from 0 to 4. The total score is calculated as the sum of the 7 items ranging from 0 to 28. Higher scores represent a more severe condition.
Change From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISI Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score <15) at Week 18Baseline and Week 18MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition. The ISI has 7 questions, each rated on a 5-point Likert scale ranging from 0 to 4. The total score is calculated as the sum of the 7 items ranging from 0 to 28. Higher scores represent a more severe condition.
Change From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISIscore >=15) Versus Those Without Significant Insomnia (Baseline ISI Score 15) at Week 24Baseline and Week 24MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition. The ISI has 7 questions, each rated on a 5-point Likert scale ranging from 0 to 4. The total score is calculated as the sum of the 7 items ranging from 0 to 28. Higher scores represent a more severe condition.
Change From Baseline in the Hamilton Anxiety Rating Scale (HAM-A) Total Score at Weeks 12, 18, and 24Baseline, Weeks 12, 18, and 24HAM-A is a 14-item scale designed to measure anxiety in individuals. Each question reflects a symptom of anxiety and physical as well as mental symptoms are represented. Each of the 14-items in the scale is scored on a 5-point scale, ranging from 0 (a complete lack of that symptom) to 4 (a very severe show of anxiety with that symptom). The total score ranges from 0 to 56 which is calculated by adding the scores of all 14 items, where 0-13 indicates normal range, 14-17 indicates mild severity, 18 -24: mild to moderate severity, 25 -30: moderate to severe, and \>=31: severe. Higher score indicates worsening. Negative change in score indicates improvement.
Percentage of Participants With Weight Gain of >=7% of Baseline Body Weight at Week 24At Week 24Percentage of participants with weight gain of \>=7% of baseline body weight at Week 24 were reported.
Percentage of Participants With Shifts in Triglycerides From Borderline to HighUp to Week 24Percentage of participants with shifts in triglycerides from borderline to high (\>=150 to \<200 mg/dL at baseline to \>=200 mg/dL at any post-baseline assessment) were reported.
Percentage of Participants With Shifts in Triglycerides From Normal to Very HighUp to Week 24Percentage of participants with shifts in triglycerides from normal to very high (\<150 mg/dL at baseline to \>=500 mg/dL at any post-baseline assessment) were reported.
Percentage of Participants With Shifts in Triglycerides From Borderline to Very HighUp to Week 24Percentage of participants with shifts in triglycerides from borderline to very high (\>=150 mg/dL to \<200 mg/dL at baseline to \>=500 mg/dL at any post-baseline assessment) were reported.
Percentage of Participants With Shifts in Triglycerides From High to Very HighUp to Week 24Percentage of participants with shifts in triglycerides from high to very high (\>=200 mg/dL to \<500 mg/dL at baseline to \>=500 mg/dL at any post-baseline assessment) were reported.
Percentage of Participants With Shifts in Fasting Blood Glucose From Normal to BorderlineUp to Week 24Percentage of participants with shifts in fasting blood glucose from normal to borderline (\<100 mg/dL at baseline to between \>=100 and \<126 mg/dL at any post-baseline assessment) were reported.
Percentage of Participants With Shifts in Fasting Blood Glucose From Borderline to HighUp to Week 24Percentage of participants with shifts in fasting blood glucose from borderline to high (\>=100 to \<126 mg/dL at baseline to \>=126 mg/dL at any post-baseline assessment) were reported.
Percentage of Participants With Shifts in Fasting Blood Glucose From Normal to HighUp to Week 24Percentage of participants with shifts in fasting blood glucose from normal to high (\<100 mg/dL at baseline to \>=126 mg/dL at any post-baseline assessment) were reported.
Change From Baseline in the Clinical Global Impression-Severity (CGI-S) Scale Score at Weeks 12 and 24Baseline, Weeks 12 and 24The CGI-S provides an overall clinician-determined summary measure of the severity of the participant's illness that takes into account all available information, including knowledge of the participant's history, psychosocial circumstances, symptoms, behavior, and the impact of the symptoms on the participant's ability to function. The CGI-S is a 7-point global assessment scale that measures the clinician's impression of the severity of illness exhibited by a participant, rating according to: 1=normal (not at all ill); 2=borderline ill; 3=mildly ill; 4=moderately ill; 5=markedly ill; 6=severely ill; and 7=among the most extremely ill participants. Higher scores indicate worsening. Negative change in score indicates improvement.
Change From Baseline in the Patient Global Impression Severity (PGI-S) Scale Score at Weeks 12 and 24Baseline, Weeks 12 and 24The PGI-S is a self-report scale to measure severity of illness (1=none, 2=mild, 3=moderate, 4=severe). Higher score indicates more illness severity. Negative change in score indicates improvement.
Change From Baseline in Quality of Life in Depression Scale (QLDS) Score at Weeks 12 and 24Baseline, Weeks 12 and 24The QLDS is a disease specific patient-reported outcome (PRO) designed to assess health related quality of life in participants with major depressive disorder (MDD). The instrument has a recall period of at the present time, contains 34-items with true/not true response options. Each statement on the QLDS is given a score of 1 (adverse quality of life) or 0 good quality of life. All item scores are summed to give a total score that ranges from 0 (good quality of life) to 34 (very poor quality of life). A higher score indicates a more severe condition. Negative change indicates improvement.
Change From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Disturbance (PROMIS-SD) Short Form 8a at Weeks 12 and 24Baseline, Weeks 12 and 24The PROMIS-SD Short Form 8a subscale consists of a static 8 item questionnaire. It assesses the concepts of sleep initiation (2 items), quality of sleep (3 items), early morning feelings (2 items) and worrying about sleep (1 item). Responses to each of the 8 items range from 1 to 5, and the range of possible summed raw scores is 8 to 40. Higher scores on the PROMIS-SD indicate more of the concept measured (disturbed sleep). Negative change in score indicates improvement.
Percentage of Participants With Sustained Remission up to Week 24Up to Week 24Remission is defined as Montgomery-Asberg Depression Rating Scale (MADRS) total score of less than or equal to (\<=) 12. A participant was defined as having achieved sustained remission if the MADRS total score was ≤12 at Week 12 and was sustained at Weeks 18 and 24. Participants with missing values at a given time point were imputed as non-evaluable for remission. MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition.
Change From Baseline in Symptoms of Major Depressive Disorder Scale (SMDDS) Score at Weeks 12 and 24Baseline, Weeks 12 and 24The SMDDS assesses participant-reported symptoms associated with MDD. This 16-item instrument has a 7-day recall period, and participants respond to each question using a rating scale between 0 (Not at all or Never) to 4 (Extremely or Always). Before summing the items to create a total score, item 11 (how often did you have a poor appetite) and item 12 (how often did you over eat) are combined into a single score by selecting the highest severity on either item. The total score is then created by summing the responses on the 15 items. The total score ranges from 0 to 60 with a higher score indicating more severe depressive symptomatology. Negative change in score indicates improvement.
Change From Baseline in Symbol Digit Modalities Test (SDMT) at Weeks 6, 12, and 24Baseline, Weeks 6, 12, and 24SDMT is a widely used, paper-and-pencil assessment of complex scanning and visual tracking, requiring elements of attention, visuoperceptual processing, working memory, and cognitive/psychomotor speed. The test is viewed as a robust screening test for adult neuropsychological impairment and is sensitive to impairments in cognitive function associated with MDD. The SDMT measured the time to pair abstract symbols with specific numbers. The test included a coding key consisting of 9 abstract symbols, each paired with a number ranging from 1 to 9. Following the key, the participant was presented with randomly ordered symbols and was required to write the number corresponding to each symbol as fast as possible. The number of correct substitutions within 90 seconds was recorded and total score derived from the total number of correct responses with a minimum possible score of 0 and maximum of 110 where high scores indicate better outcome. Positive change in score indicates improvement.
Change From Baseline in Trail Making Test - Part B (TMT-Part B) at Weeks 6, 12, and 24Baseline, Weeks 6, 12, and 24The TMT-Part B measures divided attention and executive function (tracking and sequencing). The participant is instructed to draw a line to connect a set of 25 consecutively numbered and lettered circles, alternating sequentially between numbers and letters (that is, 1 A 2 B). The participant is instructed to work as quickly as possible while still maintaining accuracy. Score included time (seconds) to completion and number of errors in performing the test which ranges from 0 (no errors) to 25 (more errors), where shorter time and less number of errors indicates better performance. The TMT-Part B is sensitive to cognitive decline associated with MDD. Negative change in score indicates improvement.
Change From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Baseline, Weeks 6, 12, and 24The HVLT-R measures performance in verbal memory, learning, and long-term recall in which a list of words is read up to three times. Approximately 20-25 minutes later, a delayed recall trial and a recognition trial are completed. The delayed recall requires free recall of any words remembered. The recognition trial is composed of 24 words, including the 12 target words and 12 false-positives. When scoring the HVLT, the three learning trials are combined to calculate a total recall score (0-36); the delayed recall trial creates the delayed recall score (0 -12); the total number of true-positive errors (0-12); and the recognition discrimination index is comprised by subtracting the total number of false positives from the total number of true positives. A higher score indicates higher cognition.
Change From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24Baseline, Weeks 6 and 24Change from baseline in salivary cortisol levels as measured upon awakening and at home during the evening at Weeks 6 and 24 were reported.
Percentage of Participants With Treatment-emergent Adverse Events as a Measure of Safety and TolerabilityUp to 24 weeksAn adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. Treatment-emergent AEs were AEs with onset during the double-blind treatment phase or that were a consequence of a preexisting condition that worsened since baseline.
Percentage of Participants With Treatment-emergent Serious Adverse Events (SAEs) and Events of Special InterestUp to 24 weeksAn adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence that at any dose may result in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, is a suspected transmission of any infectious agent via a medicinal product. AESIs were significant AEs that were judged to be of special interest because of clinical importance, known or suspected class effects, or based on nonclinical signals. Adverse events of special interest were cataplexy, sleep paralysis, complex, and sleep-related behaviors (parasomnias).
Percentage of Participants With Abnormalities in Vital Sign ParametersUp to 24 weeksPercentage of participants with abnormalities in vital sign parameters (pulse, supine and standing blood pressure \[systolic and diastolic\], body temperature, and body weight) were reported. Abnormally low values for parameters included pulse (beats per minute)- decrease value from baseline (\>=) 15 to \<=50; Systolic Blood Pressure (BP) (mmHg \[Millimeter of mercury\])- decrease value from baseline \>=20 to \<=90; Diastolic BP- decrease value from baseline \>=15 to \<=50; weight (Kilogram\[Kg\])- decrease from baseline of \>=7%; Body temperature (Celsius \[C\])- \<35.5. Abnormally high values for parameters included pulse- increase value from baseline \>=15 to \>=100; Systolic BP(mmHg)- increase from baseline of \>=20 to \>=180; Diastolic BP- increase value from baseline \>=15 to \>=105; weight(Kg)- increase from baseline of \>=7%; body temperature (C)- \>37.5.
Percentage of Participants With Abnormalities in Electrocardiogram (ECG) ParametersUp to 24 weeksPercentage of participants with abnormalities in ECG parameters were reported.
Percentage of Participants With Abnormalities in Clinical Laboratory ParametersUp to 24 weeksPercentage of participants with abnormalities in clinical laboratory parameters were reported.
Percentage of Participants With Sexual Dysfunction as Determined by Arizona Sexual Experiences Scale (ASEX) Total ScoreUp to Endpoint (Up to 24 weeks)Sexual dysfunction is defined as an ASEX total score of 19 or greater, or a score of 5 or greater on any item, or a score of 4 or greater on any 3 items. ASEX is a five-item rating scale that quantifies sex drive, arousal, vaginal lubrication/penile erection, ability to reach orgasm, and satisfaction from orgasm. Each of the 5 items is rated on a 6-point Likert scale, ranging from 1 to 6. The 5 items are summed to create a total score, ranging from 5 to 30, with the higher scores indicating more sexual dysfunction.
Percentage of Participants With Clinically Relevant Changes in Extrapyramidal Symptoms Assessed by the Extrapyramidal Symptom Rating Scale-Abbreviated (ESRS-A) ScoreUp to Endpoint (Up to 24 weeks)The ESRS-A is an abbreviated manualized version of the ESRS, a semi-structured interview that rates parkinsonian symptoms, dystonia, dyskinesias, and akathisia over the previous 7 days. The ratings include a motor examination for rigidity, tremor, reduced facial expression or speech, impaired gait/posture, postural instability, and bradykinesia/hypokinesia. Twenty-four individual items are rated on a 6-point scale: 0=Absent, 1=Minimal, 2=Mild, 3=Moderate, 4=Severe, or 5=Extreme. Frequency is included as an index of severity.
Percentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) ScoreUp to Endpoint (Up to 24 weeks)C-SSRS is a clinician-rated instrument that reports severity and frequency of suicide-related ideation and behaviors. Suicidal ideation was classified on a 5-item scale: 1 (wish to be dead), 2 (non-specific active suicidal thoughts), 3 (active suicidal ideation with any methods \[not plan\] without intent to act), 4 (active suicidal ideation with some intent to act, without specific plan), and 5 (active suicidal ideation with specific plan and intent). Suicidal behavior is classified on a 5-item scale: 6 (preparatory acts or behavior), 7 (aborted attempt), 8 (interrupted attempt), 9 (actual attempt \[non-fatal\]), and 10 (completed suicide \[only applicable for post baseline\]). Minimum total score 0, maximum total score 10; higher total scores indicate more suicidal ideation and/or suicidal behavior. If no events qualify for score of 1 to 10, score of 0 was assigned (0= no event that can be assessed on the basis of C-SSRS). Higher scores indicate greater severity.
Percentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Up to 26 weeksIntensity of discontinuation symptoms was assessed (anxiety-nervousness, dysphoric mood/depression, Depersonalization-Derealization, , Diaphoresis, Diarrhea, Difficulty Concentrating, Remember, Dizziness-Lightheadedness, Fatigue-Lethargy-Lack of Energy, Headaches, Increased Acuity Sound Smell Touch, Irritability, Loss of Appetite, Muscle Aches or Stiffness, Nausea-Vomiting, Paresthesias, Poor Coordination, Restlessness-Agitation, Tremor-Tremulousness, Weakness), using the Physician Withdrawal Checklist (PWC-20) administered by a trained clinician/rater. Symptoms are rated on a scale of 0 (no symptom present), 1 (mild), 2 (moderate), and 3 (severe). Total scores range from 0 (no symptom) to 24 (severe symptom) calculated by adding the scores of following 8 items: Nausea-Vomiting, Diarrhea, Poor Coordination, Diaphoresis, Tremor-Tremulousness, Dizziness-Lightheadedness, Increased Acuity Sound Smell Touch, Paresthesias. Higher scores indicates more severe symptoms.
Change From Baseline in MADRS Total Score Over TimeBaseline, Weeks 2, 4, 6, 12, 18, 24MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition.
Change From Baseline in MADRS Total Score Over Time, by Mode DoseBaseline, Weeks 2, 4, 6, 12, 18, 24, and 26MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition. Negative change in score indicates improvement.
Change From Baseline in MADRS-6 Score Over TimeBaseline, Weeks 2, 4, 6, 12, 18, 24, and 26MADRS-6 is the depression subscale of the full MADRS, including the following 6 items: apparent sadness, reported sadness, inner tension, lassitude, inability to feel, pessimistic thoughts. Each item is scored from 0 (absence of symptom) to 6 (severe symptom); the overall score ranges from 0 to 36 which is calculated by adding the scores of all 6 items. Higher scores represent a more severe condition.
Change From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Related Impairment (PROMIS-SRI) Short Form 8a at Weeks 12 and 24Baseline, Weeks 12 and 24The PROMIS-SRI Short Form 8a subscale consists of a static 8 item questionnaire and use five-point likert scale to capture the participant's impressions. It assesses sleep-related impairment over the past 7 days. Responses to each of the 8 items range from 1 (less impairment) to 5 (more impairment), and the range of possible summed raw scores is 8 to 40. Lower scores indicate less sleep related impairment. Negative change in score indicates improvement.

Countries

United States

Participant flow

Participants by arm

ArmCount
Seltorexant
Participants in the double-blind treatment phase received seltorexant 20 milligrams (mg) tablet orally once daily as the starting dose on Day 1. From Day 14, participants received either seltorexant 20 mg or 40 mg up to Day 168 (Week 24) while continuing their current selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI) antidepressant on which they had an inadequate response at the time of screening. Participants had a follow-up visit within 7 to 14 days after double-blind treatment phase. During the follow-up phase, participants were followed-up for the safety assessments on Day 182 (Week 26).
52
Quetiapine XR
Participants in the double-blind treatment phase received quetiapine XR 50 mg once daily for the first two days and then 150 mg tablets orally once daily from Day 3 to Day 14. From Day 14, participants received either quetiapine XR 150 mg or 300 mg up to Day 168 (Week 24) while continuing their current selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI) antidepressant on which they had an inadequate response at the time of screening. Participants had a follow-up visit within 7 to 14 days after double-blind treatment phase. During the follow-up phase, participants were followed-up for the safety assessments on Day 182 (Week 26).
52
Total104

Withdrawals & dropouts

PeriodReasonFG000FG001
Double-blind Treatment Phase (24 Weeks)Adverse Event78
Double-blind Treatment Phase (24 Weeks)Death10
Double-blind Treatment Phase (24 Weeks)Lack of Efficacy13
Double-blind Treatment Phase (24 Weeks)Lost to Follow-up22
Double-blind Treatment Phase (24 Weeks)Non-Compliance with Study Drug36
Double-blind Treatment Phase (24 Weeks)Other14
Double-blind Treatment Phase (24 Weeks)Withdrawal by Subject93
Follow-up Phase (2 Weeks)Other2424

Baseline characteristics

CharacteristicSeltorexantQuetiapine XRTotal
Age, Continuous55.3 years
STANDARD_DEVIATION 9.67
53.6 years
STANDARD_DEVIATION 10.83
54.5 years
STANDARD_DEVIATION 10.26
Age, Customized
85 years and over
0 Participants0 Participants0 Participants
Age, Customized
Adults (18-64 years)
43 Participants43 Participants86 Participants
Age, Customized
From 65 to 84 years
9 Participants9 Participants18 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
17 Participants10 Participants27 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
34 Participants41 Participants75 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants1 Participants2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
14 Participants14 Participants28 Participants
Race (NIH/OMB)
More than one race
0 Participants2 Participants2 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
2 Participants0 Participants2 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
36 Participants36 Participants72 Participants
Region of Enrollment
UNITED STATES
52 Participants52 Participants104 Participants
Sex: Female, Male
Female
34 Participants35 Participants69 Participants
Sex: Female, Male
Male
18 Participants17 Participants35 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
1 / 520 / 520 / 520 / 52
other
Total, other adverse events
21 / 5232 / 521 / 522 / 52
serious
Total, serious adverse events
1 / 522 / 520 / 520 / 52

Outcome results

Primary

Time to All-Cause Discontinuation of Study Drug

Time to all-cause discontinuation of study drug is defined as the number of days from the first dose of study drug to the last dose of study drug. Participants who completed double-blind treatment were not considered to have discontinued.

Time frame: Up to Week 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective investigational products (IPs) and were subsequently discontinued early because of the IP issues.

ArmMeasureValue (MEDIAN)
SeltorexantTime to All-Cause Discontinuation of Study DrugNA days
Quetiapine XRTime to All-Cause Discontinuation of Study DrugNA days
p-value: 0.5355Log Rank
Secondary

Change From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24

The HVLT-R measures performance in verbal memory, learning, and long-term recall in which a list of words is read up to three times. Approximately 20-25 minutes later, a delayed recall trial and a recognition trial are completed. The delayed recall requires free recall of any words remembered. The recognition trial is composed of 24 words, including the 12 target words and 12 false-positives. When scoring the HVLT, the three learning trials are combined to calculate a total recall score (0-36); the delayed recall trial creates the delayed recall score (0 -12); the total number of true-positive errors (0-12); and the recognition discrimination index is comprised by subtracting the total number of false positives from the total number of true positives. A higher score indicates higher cognition.

Time frame: Baseline, Weeks 6, 12, and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Delayed Recall: Week 60.2 units on a scaleStandard Deviation 2.07
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Recognition Discrimination Index: Week 12-0.3 units on a scaleStandard Deviation 4.67
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Delayed Recall: Week 120.5 units on a scaleStandard Deviation 2.54
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total Recall: Week 242.0 units on a scaleStandard Deviation 5.22
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total Recall: Week 121.9 units on a scaleStandard Deviation 5.24
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Delayed Recall: Week 241.3 units on a scaleStandard Deviation 2.74
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total True-Positive Errors: Week 240.5 units on a scaleStandard Deviation 3.03
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total True-Positive Errors: Week 60.5 units on a scaleStandard Deviation 4.21
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total True-Positive Errors: Week 120.2 units on a scaleStandard Deviation 3.99
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Recognition Discrimination Index: Week 60.8 units on a scaleStandard Deviation 4.03
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Recognition Discrimination Index: Week 240.9 units on a scaleStandard Deviation 2.91
SeltorexantChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total Recall: Week 60.6 units on a scaleStandard Deviation 4.6
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Recognition Discrimination Index: Week 24-0.3 units on a scaleStandard Deviation 4.69
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total Recall: Week 6-0.1 units on a scaleStandard Deviation 5.51
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total Recall: Week 121.3 units on a scaleStandard Deviation 5.25
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total Recall: Week 241.4 units on a scaleStandard Deviation 5.09
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total True-Positive Errors: Week 6-0.4 units on a scaleStandard Deviation 2.71
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total True-Positive Errors: Week 12-0.1 units on a scaleStandard Deviation 3.59
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Recognition Discrimination Index: Week 61.0 units on a scaleStandard Deviation 3.8
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Recognition Discrimination Index: Week 120.1 units on a scaleStandard Deviation 5.29
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Delayed Recall: Week 60.6 units on a scaleStandard Deviation 2.57
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Delayed Recall: Week 121.0 units on a scaleStandard Deviation 2.52
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Delayed Recall: Week 241.4 units on a scaleStandard Deviation 2.39
Quetiapine XRChange From Baseline in Hopkins Verbal Learning Test-Revised (HVLT-R) at Weeks 6, 12, and 24Total True-Positive Errors: Week 24-0.7 units on a scaleStandard Deviation 3.07
Secondary

Change From Baseline in MADRS-6 Score Over Time

MADRS-6 is the depression subscale of the full MADRS, including the following 6 items: apparent sadness, reported sadness, inner tension, lassitude, inability to feel, pessimistic thoughts. Each item is scored from 0 (absence of symptom) to 6 (severe symptom); the overall score ranges from 0 to 36 which is calculated by adding the scores of all 6 items. Higher scores represent a more severe condition.

Time frame: Baseline, Weeks 2, 4, 6, 12, 18, 24, and 26

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in MADRS-6 Score Over TimeWeek 26-9.1 score on a scaleStandard Deviation 8.97
SeltorexantChange From Baseline in MADRS-6 Score Over TimeWeek 18-7.2 score on a scaleStandard Deviation 10.6
SeltorexantChange From Baseline in MADRS-6 Score Over TimeWeek 2-4.4 score on a scaleStandard Deviation 6.76
SeltorexantChange From Baseline in MADRS-6 Score Over TimeWeek 4-5.8 score on a scaleStandard Deviation 7.18
SeltorexantChange From Baseline in MADRS-6 Score Over TimeWeek 6-6.7 score on a scaleStandard Deviation 7.69
SeltorexantChange From Baseline in MADRS-6 Score Over TimeWeek 12-7.5 score on a scaleStandard Deviation 8.18
SeltorexantChange From Baseline in MADRS-6 Score Over TimeWeek 24-9.1 score on a scaleStandard Deviation 9.4
Quetiapine XRChange From Baseline in MADRS-6 Score Over TimeWeek 12-10.4 score on a scaleStandard Deviation 7.68
Quetiapine XRChange From Baseline in MADRS-6 Score Over TimeWeek 6-7.5 score on a scaleStandard Deviation 6.95
Quetiapine XRChange From Baseline in MADRS-6 Score Over TimeWeek 26-8.4 score on a scaleStandard Deviation 7.83
Quetiapine XRChange From Baseline in MADRS-6 Score Over TimeWeek 24-10.3 score on a scaleStandard Deviation 8.59
Quetiapine XRChange From Baseline in MADRS-6 Score Over TimeWeek 2-4.1 score on a scaleStandard Deviation 5.6
Quetiapine XRChange From Baseline in MADRS-6 Score Over TimeWeek 18-9.2 score on a scaleStandard Deviation 8.62
Quetiapine XRChange From Baseline in MADRS-6 Score Over TimeWeek 4-6.9 score on a scaleStandard Deviation 6.79
Secondary

Change From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline Insomnia Severity Index [ISI] Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score Less Than [<] 15) at Week 12

MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition. The ISI has 7 questions, each rated on a 5-point Likert scale ranging from 0 to 4. The total score is calculated as the sum of the 7 items ranging from 0 to 28. Higher scores represent a more severe condition.

Time frame: Baseline and Week 12

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, N (number of participants analyzed) signifies number of participants that were evaluable for this outcome measure and n (number analyzed) signifies those participants who were evaluable for specific categories.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline Insomnia Severity Index [ISI] Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score Less Than [<] 15) at Week 12Baseline ISI score <15-10.4 score on a scaleStandard Deviation 12.68
SeltorexantChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline Insomnia Severity Index [ISI] Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score Less Than [<] 15) at Week 12Baseline ISI score >=15-13.4 score on a scaleStandard Deviation 10.73
Quetiapine XRChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline Insomnia Severity Index [ISI] Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score Less Than [<] 15) at Week 12Baseline ISI score <15-12.8 score on a scaleStandard Deviation 9.67
Quetiapine XRChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline Insomnia Severity Index [ISI] Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score Less Than [<] 15) at Week 12Baseline ISI score >=15-17.3 score on a scaleStandard Deviation 9.7
Secondary

Change From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISI Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score <15) at Week 18

MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition. The ISI has 7 questions, each rated on a 5-point Likert scale ranging from 0 to 4. The total score is calculated as the sum of the 7 items ranging from 0 to 28. Higher scores represent a more severe condition.

Time frame: Baseline and Week 18

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, N (number of participants analyzed) signifies number of participants that were evaluable for this outcome measure and n (number analyzed) signifies those participants who were evaluable for specific categories.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISI Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score <15) at Week 18Baseline ISI score <15-13.9 score on a scaleStandard Deviation 16.66
SeltorexantChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISI Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score <15) at Week 18Baseline ISI score >=15-10.3 score on a scaleStandard Deviation 14.96
Quetiapine XRChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISI Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score <15) at Week 18Baseline ISI score <15-16.2 score on a scaleStandard Deviation 10.46
Quetiapine XRChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISI Score >=15) Versus Those Without Significant Insomnia (Baseline ISI Score <15) at Week 18Baseline ISI score >=15-12.9 score on a scaleStandard Deviation 11.58
Secondary

Change From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISIscore >=15) Versus Those Without Significant Insomnia (Baseline ISI Score 15) at Week 24

MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition. The ISI has 7 questions, each rated on a 5-point Likert scale ranging from 0 to 4. The total score is calculated as the sum of the 7 items ranging from 0 to 28. Higher scores represent a more severe condition.

Time frame: Baseline and Week 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, N (number of participants analyzed) signifies number of participants that were evaluable for this outcome measure. and n (number analyzed) signifies those participants who were evaluable for specific categories.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISIscore >=15) Versus Those Without Significant Insomnia (Baseline ISI Score 15) at Week 24Baseline ISI score <15-14.3 score on a scaleStandard Deviation 14.47
SeltorexantChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISIscore >=15) Versus Those Without Significant Insomnia (Baseline ISI Score 15) at Week 24Baseline ISI score >=15-13.5 score on a scaleStandard Deviation 14.32
Quetiapine XRChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISIscore >=15) Versus Those Without Significant Insomnia (Baseline ISI Score 15) at Week 24Baseline ISI score >=15-15.4 score on a scaleStandard Deviation 11.76
Quetiapine XRChange From Baseline in MADRS Total Score in Participants With Significant Insomnia (Baseline ISIscore >=15) Versus Those Without Significant Insomnia (Baseline ISI Score 15) at Week 24Baseline ISI score <15-15.6 score on a scaleStandard Deviation 8.78
Secondary

Change From Baseline in MADRS Total Score Over Time

MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition.

Time frame: Baseline, Weeks 2, 4, 6, 12, 18, 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in MADRS Total Score Over TimeWeek 24-13.8 score on a scaleStandard Deviation 14.13
SeltorexantChange From Baseline in MADRS Total Score Over TimeWeek 2-6.7 score on a scaleStandard Deviation 9
SeltorexantChange From Baseline in MADRS Total Score Over TimeWeek 4-8.7 score on a scaleStandard Deviation 9.71
SeltorexantChange From Baseline in MADRS Total Score Over TimeWeek 6-9.9 score on a scaleStandard Deviation 9.98
SeltorexantChange From Baseline in MADRS Total Score Over TimeWeek 12-12.3 score on a scaleStandard Deviation 11.41
SeltorexantChange From Baseline in MADRS Total Score Over TimeWeek 18-11.7 score on a scaleStandard Deviation 15.48
Quetiapine XRChange From Baseline in MADRS Total Score Over TimeWeek 12-15.6 score on a scaleStandard Deviation 9.8
Quetiapine XRChange From Baseline in MADRS Total Score Over TimeWeek 24-15.4 score on a scaleStandard Deviation 10.57
Quetiapine XRChange From Baseline in MADRS Total Score Over TimeWeek 6-11.4 score on a scaleStandard Deviation 9.4
Quetiapine XRChange From Baseline in MADRS Total Score Over TimeWeek 2-6.4 score on a scaleStandard Deviation 8
Quetiapine XRChange From Baseline in MADRS Total Score Over TimeWeek 18-14.1 score on a scaleStandard Deviation 11.41
Quetiapine XRChange From Baseline in MADRS Total Score Over TimeWeek 4-10.8 score on a scaleStandard Deviation 9.6
Secondary

Change From Baseline in MADRS Total Score Over Time, by Mode Dose

MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition. Negative change in score indicates improvement.

Time frame: Baseline, Weeks 2, 4, 6, 12, 18, 24, and 26

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 26-16.3 score on a scaleStandard Deviation 7.52
SeltorexantChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 4-7.7 score on a scaleStandard Deviation 8.05
SeltorexantChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 2-7.3 score on a scaleStandard Deviation 7.28
SeltorexantChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 24-14.9 score on a scaleStandard Deviation 7.93
SeltorexantChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 6-9.1 score on a scaleStandard Deviation 9.26
SeltorexantChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 12-11.8 score on a scaleStandard Deviation 9.34
SeltorexantChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 18-12.8 score on a scaleStandard Deviation 9.98
Quetiapine XRChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 12-5.3 score on a scaleStandard Deviation 6.69
Quetiapine XRChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 18-3.8 score on a scaleStandard Deviation 9.64
Quetiapine XRChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 24-5.2 score on a scaleStandard Deviation 8.38
Quetiapine XRChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 26-9.3 score on a scaleStandard Deviation 8.98
Quetiapine XRChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 4-4.4 score on a scaleStandard Deviation 6.25
Quetiapine XRChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 6-5.2 score on a scaleStandard Deviation 6.26
Quetiapine XRChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 2-2.4 score on a scaleStandard Deviation 5.66
Quetiapine XR 150 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 6-7.3 score on a scaleStandard Deviation 5.67
Quetiapine XR 150 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 26-8.3 score on a scaleStandard Deviation 7.1
Quetiapine XR 150 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 2-4.5 score on a scaleStandard Deviation 5.8
Quetiapine XR 150 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 4-6.9 score on a scaleStandard Deviation 6.99
Quetiapine XR 150 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 24-11.9 score on a scaleStandard Deviation 6.06
Quetiapine XR 150 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 12-12.5 score on a scaleStandard Deviation 6.87
Quetiapine XR 150 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 18-6.0 score on a scaleStandard Deviation 8.26
Quetiapine XR 300 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 26-8.6 score on a scaleStandard Deviation 8.45
Quetiapine XR 300 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 4-6.9 score on a scaleStandard Deviation 6.79
Quetiapine XR 300 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 2-3.6 score on a scaleStandard Deviation 5.49
Quetiapine XR 300 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 6-7.6 score on a scaleStandard Deviation 7.82
Quetiapine XR 300 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 18-10.5 score on a scaleStandard Deviation 8.61
Quetiapine XR 300 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 24-9.7 score on a scaleStandard Deviation 9.53
Quetiapine XR 300 mgChange From Baseline in MADRS Total Score Over Time, by Mode DoseWeek 12-9.3 score on a scaleStandard Deviation 7.99
Secondary

Change From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Disturbance (PROMIS-SD) Short Form 8a at Weeks 12 and 24

The PROMIS-SD Short Form 8a subscale consists of a static 8 item questionnaire. It assesses the concepts of sleep initiation (2 items), quality of sleep (3 items), early morning feelings (2 items) and worrying about sleep (1 item). Responses to each of the 8 items range from 1 to 5, and the range of possible summed raw scores is 8 to 40. Higher scores on the PROMIS-SD indicate more of the concept measured (disturbed sleep). Negative change in score indicates improvement.

Time frame: Baseline, Weeks 12 and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Disturbance (PROMIS-SD) Short Form 8a at Weeks 12 and 24Week 12-8.22 units on a scaleStandard Deviation 10.073
SeltorexantChange From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Disturbance (PROMIS-SD) Short Form 8a at Weeks 12 and 24Week 24-11.45 units on a scaleStandard Deviation 11.722
Quetiapine XRChange From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Disturbance (PROMIS-SD) Short Form 8a at Weeks 12 and 24Week 12-11.87 units on a scaleStandard Deviation 10.717
Quetiapine XRChange From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Disturbance (PROMIS-SD) Short Form 8a at Weeks 12 and 24Week 24-12.91 units on a scaleStandard Deviation 7.878
Secondary

Change From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Related Impairment (PROMIS-SRI) Short Form 8a at Weeks 12 and 24

The PROMIS-SRI Short Form 8a subscale consists of a static 8 item questionnaire and use five-point likert scale to capture the participant's impressions. It assesses sleep-related impairment over the past 7 days. Responses to each of the 8 items range from 1 (less impairment) to 5 (more impairment), and the range of possible summed raw scores is 8 to 40. Lower scores indicate less sleep related impairment. Negative change in score indicates improvement.

Time frame: Baseline, Weeks 12 and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Related Impairment (PROMIS-SRI) Short Form 8a at Weeks 12 and 24Week 12-7.25 units on a scaleStandard Deviation 9.449
SeltorexantChange From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Related Impairment (PROMIS-SRI) Short Form 8a at Weeks 12 and 24Week 24-11.02 units on a scaleStandard Deviation 11.061
Quetiapine XRChange From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Related Impairment (PROMIS-SRI) Short Form 8a at Weeks 12 and 24Week 12-9.09 units on a scaleStandard Deviation 7.992
Quetiapine XRChange From Baseline in Patient Reported Outcomes Measurement Information System-Sleep Related Impairment (PROMIS-SRI) Short Form 8a at Weeks 12 and 24Week 24-10.74 units on a scaleStandard Deviation 6.97
Secondary

Change From Baseline in Quality of Life in Depression Scale (QLDS) Score at Weeks 12 and 24

The QLDS is a disease specific patient-reported outcome (PRO) designed to assess health related quality of life in participants with major depressive disorder (MDD). The instrument has a recall period of at the present time, contains 34-items with true/not true response options. Each statement on the QLDS is given a score of 1 (adverse quality of life) or 0 good quality of life. All item scores are summed to give a total score that ranges from 0 (good quality of life) to 34 (very poor quality of life). A higher score indicates a more severe condition. Negative change indicates improvement.

Time frame: Baseline, Weeks 12 and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in Quality of Life in Depression Scale (QLDS) Score at Weeks 12 and 24Week 12-8.1 units on a scaleStandard Deviation 9.2
SeltorexantChange From Baseline in Quality of Life in Depression Scale (QLDS) Score at Weeks 12 and 24Week 24-9.5 units on a scaleStandard Deviation 10.32
Quetiapine XRChange From Baseline in Quality of Life in Depression Scale (QLDS) Score at Weeks 12 and 24Week 12-8.3 units on a scaleStandard Deviation 8.68
Quetiapine XRChange From Baseline in Quality of Life in Depression Scale (QLDS) Score at Weeks 12 and 24Week 24-9.9 units on a scaleStandard Deviation 10.43
Secondary

Change From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24

Change from baseline in salivary cortisol levels as measured upon awakening and at home during the evening at Weeks 6 and 24 were reported.

Time frame: Baseline, Weeks 6 and 24

Population: The biomarker analysis set included all randomized participants who received at least 1 dose of study drug during the double-blind (DB) treatment phase and had biomarker data at baseline. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24Awakening: Week 61.3 nanomoles per liter (nmol/L)Standard Deviation 9.07
SeltorexantChange From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24Awakening: Week 241.4 nanomoles per liter (nmol/L)Standard Deviation 9.42
SeltorexantChange From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24Evening: Week 6-0.7 nanomoles per liter (nmol/L)Standard Deviation 4.59
SeltorexantChange From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24Evening: Week 241.4 nanomoles per liter (nmol/L)Standard Deviation 6.85
Quetiapine XRChange From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24Evening: Week 240.9 nanomoles per liter (nmol/L)Standard Deviation 2.73
Quetiapine XRChange From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24Awakening: Week 6-2.8 nanomoles per liter (nmol/L)Standard Deviation 8.27
Quetiapine XRChange From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24Evening: Week 60.5 nanomoles per liter (nmol/L)Standard Deviation 5.96
Quetiapine XRChange From Baseline in Salivary Cortisol Levels as Measured at Home Upon Awakening and During the Evening at Weeks 6 and 24Awakening: Week 24-1.7 nanomoles per liter (nmol/L)Standard Deviation 6.86
Secondary

Change From Baseline in Symbol Digit Modalities Test (SDMT) at Weeks 6, 12, and 24

SDMT is a widely used, paper-and-pencil assessment of complex scanning and visual tracking, requiring elements of attention, visuoperceptual processing, working memory, and cognitive/psychomotor speed. The test is viewed as a robust screening test for adult neuropsychological impairment and is sensitive to impairments in cognitive function associated with MDD. The SDMT measured the time to pair abstract symbols with specific numbers. The test included a coding key consisting of 9 abstract symbols, each paired with a number ranging from 1 to 9. Following the key, the participant was presented with randomly ordered symbols and was required to write the number corresponding to each symbol as fast as possible. The number of correct substitutions within 90 seconds was recorded and total score derived from the total number of correct responses with a minimum possible score of 0 and maximum of 110 where high scores indicate better outcome. Positive change in score indicates improvement.

Time frame: Baseline, Weeks 6, 12, and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in Symbol Digit Modalities Test (SDMT) at Weeks 6, 12, and 24Week 65.0 units on a scaleStandard Deviation 14.45
SeltorexantChange From Baseline in Symbol Digit Modalities Test (SDMT) at Weeks 6, 12, and 24Week 125.5 units on a scaleStandard Deviation 17.61
SeltorexantChange From Baseline in Symbol Digit Modalities Test (SDMT) at Weeks 6, 12, and 24Week 244.7 units on a scaleStandard Deviation 18.78
Quetiapine XRChange From Baseline in Symbol Digit Modalities Test (SDMT) at Weeks 6, 12, and 24Week 120.1 units on a scaleStandard Deviation 14.07
Quetiapine XRChange From Baseline in Symbol Digit Modalities Test (SDMT) at Weeks 6, 12, and 24Week 240.0 units on a scaleStandard Deviation 9.83
Quetiapine XRChange From Baseline in Symbol Digit Modalities Test (SDMT) at Weeks 6, 12, and 24Week 6-2.9 units on a scaleStandard Deviation 11.72
Secondary

Change From Baseline in Symptoms of Major Depressive Disorder Scale (SMDDS) Score at Weeks 12 and 24

The SMDDS assesses participant-reported symptoms associated with MDD. This 16-item instrument has a 7-day recall period, and participants respond to each question using a rating scale between 0 (Not at all or Never) to 4 (Extremely or Always). Before summing the items to create a total score, item 11 (how often did you have a poor appetite) and item 12 (how often did you over eat) are combined into a single score by selecting the highest severity on either item. The total score is then created by summing the responses on the 15 items. The total score ranges from 0 to 60 with a higher score indicating more severe depressive symptomatology. Negative change in score indicates improvement.

Time frame: Baseline, Weeks 12 and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in Symptoms of Major Depressive Disorder Scale (SMDDS) Score at Weeks 12 and 24Week 12-13.9 units on a scaleStandard Deviation 10.92
SeltorexantChange From Baseline in Symptoms of Major Depressive Disorder Scale (SMDDS) Score at Weeks 12 and 24Week 24-15.6 units on a scaleStandard Deviation 13.07
Quetiapine XRChange From Baseline in Symptoms of Major Depressive Disorder Scale (SMDDS) Score at Weeks 12 and 24Week 24-19.6 units on a scaleStandard Deviation 11.59
Quetiapine XRChange From Baseline in Symptoms of Major Depressive Disorder Scale (SMDDS) Score at Weeks 12 and 24Week 12-15.7 units on a scaleStandard Deviation 11.16
Secondary

Change From Baseline in the Clinical Global Impression-Severity (CGI-S) Scale Score at Weeks 12 and 24

The CGI-S provides an overall clinician-determined summary measure of the severity of the participant's illness that takes into account all available information, including knowledge of the participant's history, psychosocial circumstances, symptoms, behavior, and the impact of the symptoms on the participant's ability to function. The CGI-S is a 7-point global assessment scale that measures the clinician's impression of the severity of illness exhibited by a participant, rating according to: 1=normal (not at all ill); 2=borderline ill; 3=mildly ill; 4=moderately ill; 5=markedly ill; 6=severely ill; and 7=among the most extremely ill participants. Higher scores indicate worsening. Negative change in score indicates improvement.

Time frame: Baseline, Weeks 12 and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in the Clinical Global Impression-Severity (CGI-S) Scale Score at Weeks 12 and 24Week 12-1.2 units on a scaleStandard Deviation 1.39
SeltorexantChange From Baseline in the Clinical Global Impression-Severity (CGI-S) Scale Score at Weeks 12 and 24Week 24-1.4 units on a scaleStandard Deviation 1.65
Quetiapine XRChange From Baseline in the Clinical Global Impression-Severity (CGI-S) Scale Score at Weeks 12 and 24Week 12-1.7 units on a scaleStandard Deviation 1.23
Quetiapine XRChange From Baseline in the Clinical Global Impression-Severity (CGI-S) Scale Score at Weeks 12 and 24Week 24-1.7 units on a scaleStandard Deviation 1.1
Secondary

Change From Baseline in the Hamilton Anxiety Rating Scale (HAM-A) Total Score at Weeks 12, 18, and 24

HAM-A is a 14-item scale designed to measure anxiety in individuals. Each question reflects a symptom of anxiety and physical as well as mental symptoms are represented. Each of the 14-items in the scale is scored on a 5-point scale, ranging from 0 (a complete lack of that symptom) to 4 (a very severe show of anxiety with that symptom). The total score ranges from 0 to 56 which is calculated by adding the scores of all 14 items, where 0-13 indicates normal range, 14-17 indicates mild severity, 18 -24: mild to moderate severity, 25 -30: moderate to severe, and \>=31: severe. Higher score indicates worsening. Negative change in score indicates improvement.

Time frame: Baseline, Weeks 12, 18, and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints for specific timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in the Hamilton Anxiety Rating Scale (HAM-A) Total Score at Weeks 12, 18, and 24Week 12-8.7 units on a scaleStandard Deviation 6.05
SeltorexantChange From Baseline in the Hamilton Anxiety Rating Scale (HAM-A) Total Score at Weeks 12, 18, and 24Week 24-10.9 units on a scaleStandard Deviation 6.55
SeltorexantChange From Baseline in the Hamilton Anxiety Rating Scale (HAM-A) Total Score at Weeks 12, 18, and 24Week 18-8.5 units on a scaleStandard Deviation 6.66
Quetiapine XRChange From Baseline in the Hamilton Anxiety Rating Scale (HAM-A) Total Score at Weeks 12, 18, and 24Week 18-10.0 units on a scaleStandard Deviation 5.69
Quetiapine XRChange From Baseline in the Hamilton Anxiety Rating Scale (HAM-A) Total Score at Weeks 12, 18, and 24Week 24-9.5 units on a scaleStandard Deviation 7.26
Quetiapine XRChange From Baseline in the Hamilton Anxiety Rating Scale (HAM-A) Total Score at Weeks 12, 18, and 24Week 12-6.6 units on a scaleStandard Deviation 6.75
Secondary

Change From Baseline in the Patient Global Impression Severity (PGI-S) Scale Score at Weeks 12 and 24

The PGI-S is a self-report scale to measure severity of illness (1=none, 2=mild, 3=moderate, 4=severe). Higher score indicates more illness severity. Negative change in score indicates improvement.

Time frame: Baseline, Weeks 12 and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in the Patient Global Impression Severity (PGI-S) Scale Score at Weeks 12 and 24Week 12-1.0 units on a scaleStandard Deviation 1.07
SeltorexantChange From Baseline in the Patient Global Impression Severity (PGI-S) Scale Score at Weeks 12 and 24Week 24-1.2 units on a scaleStandard Deviation 1.1
Quetiapine XRChange From Baseline in the Patient Global Impression Severity (PGI-S) Scale Score at Weeks 12 and 24Week 12-1.1 units on a scaleStandard Deviation 1.02
Quetiapine XRChange From Baseline in the Patient Global Impression Severity (PGI-S) Scale Score at Weeks 12 and 24Week 24-1.5 units on a scaleStandard Deviation 1.09
Secondary

Change From Baseline in Trail Making Test - Part B (TMT-Part B) at Weeks 6, 12, and 24

The TMT-Part B measures divided attention and executive function (tracking and sequencing). The participant is instructed to draw a line to connect a set of 25 consecutively numbered and lettered circles, alternating sequentially between numbers and letters (that is, 1 A 2 B). The participant is instructed to work as quickly as possible while still maintaining accuracy. Score included time (seconds) to completion and number of errors in performing the test which ranges from 0 (no errors) to 25 (more errors), where shorter time and less number of errors indicates better performance. The TMT-Part B is sensitive to cognitive decline associated with MDD. Negative change in score indicates improvement.

Time frame: Baseline, Weeks 6, 12, and 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints.

ArmMeasureGroupValue (MEAN)Dispersion
SeltorexantChange From Baseline in Trail Making Test - Part B (TMT-Part B) at Weeks 6, 12, and 24Week 60.4 units on a scaleStandard Deviation 3.26
SeltorexantChange From Baseline in Trail Making Test - Part B (TMT-Part B) at Weeks 6, 12, and 24Week 120.2 units on a scaleStandard Deviation 3.39
SeltorexantChange From Baseline in Trail Making Test - Part B (TMT-Part B) at Weeks 6, 12, and 24Week 240.5 units on a scaleStandard Deviation 4.54
Quetiapine XRChange From Baseline in Trail Making Test - Part B (TMT-Part B) at Weeks 6, 12, and 24Week 120.6 units on a scaleStandard Deviation 2.93
Quetiapine XRChange From Baseline in Trail Making Test - Part B (TMT-Part B) at Weeks 6, 12, and 24Week 24-0.3 units on a scaleStandard Deviation 1.54
Quetiapine XRChange From Baseline in Trail Making Test - Part B (TMT-Part B) at Weeks 6, 12, and 24Week 60.0 units on a scaleStandard Deviation 2.59
Secondary

Percentage of Participants With Abnormalities in Clinical Laboratory Parameters

Percentage of participants with abnormalities in clinical laboratory parameters were reported.

Time frame: Up to 24 weeks

Population: The safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Abnormalities in Clinical Laboratory Parameters0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Clinical Laboratory Parameters0 percentage of participants
Secondary

Percentage of Participants With Abnormalities in Electrocardiogram (ECG) Parameters

Percentage of participants with abnormalities in ECG parameters were reported.

Time frame: Up to 24 weeks

Population: The safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Abnormalities in Electrocardiogram (ECG) Parameters0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Electrocardiogram (ECG) Parameters0 percentage of participants
Secondary

Percentage of Participants With Abnormalities in Vital Sign Parameters

Percentage of participants with abnormalities in vital sign parameters (pulse, supine and standing blood pressure \[systolic and diastolic\], body temperature, and body weight) were reported. Abnormally low values for parameters included pulse (beats per minute)- decrease value from baseline (\>=) 15 to \<=50; Systolic Blood Pressure (BP) (mmHg \[Millimeter of mercury\])- decrease value from baseline \>=20 to \<=90; Diastolic BP- decrease value from baseline \>=15 to \<=50; weight (Kilogram\[Kg\])- decrease from baseline of \>=7%; Body temperature (Celsius \[C\])- \<35.5. Abnormally high values for parameters included pulse- increase value from baseline \>=15 to \>=100; Systolic BP(mmHg)- increase from baseline of \>=20 to \>=180; Diastolic BP- increase value from baseline \>=15 to \>=105; weight(Kg)- increase from baseline of \>=7%; body temperature (C)- \>37.5.

Time frame: Up to 24 weeks

Population: The safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable for specified categories.

ArmMeasureGroupValue (NUMBER)
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Pulse Rate: Abnormally high2.0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Systolic Blood Pressure: Abnormally high0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersTemperature: Abnormally low0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Systolic Blood Pressure: Abnormally high0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersTemperature: Abnormally high6.0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersWeight: Abnormally low4.3 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Diastolic Blood Pressure: Abnormally low0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersWeight: Abnormally high4.3 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Systolic Blood Pressure: Abnormally low0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Pulse Rate: Abnormally low0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Diastolic Blood Pressure: Abnormally high0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Pulse Rate: Abnormally high2.0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Systolic Blood Pressure: Abnormally low0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Diastolic Blood Pressure: Abnormally low0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Diastolic Blood Pressure: Abnormally high2.0 percentage of participants
SeltorexantPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Pulse Rate: Abnormally low0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersTemperature: Abnormally high0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Pulse Rate: Abnormally high5.9 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Systolic Blood Pressure: Abnormally low0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Systolic Blood Pressure: Abnormally high0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Systolic Blood Pressure: Abnormally low2.0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Systolic Blood Pressure: Abnormally high0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Diastolic Blood Pressure: Abnormally low0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Diastolic Blood Pressure: Abnormally high0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Diastolic Blood Pressure: Abnormally low0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Diastolic Blood Pressure: Abnormally high0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersTemperature: Abnormally low0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersWeight: Abnormally low0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersWeight: Abnormally high8.5 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Pulse Rate: Abnormally low2.0 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersSupine Pulse Rate: Abnormally high3.9 percentage of participants
Quetiapine XRPercentage of Participants With Abnormalities in Vital Sign ParametersStanding Pulse Rate: Abnormally low0 percentage of participants
Secondary

Percentage of Participants With Clinically Relevant Changes in Extrapyramidal Symptoms Assessed by the Extrapyramidal Symptom Rating Scale-Abbreviated (ESRS-A) Score

The ESRS-A is an abbreviated manualized version of the ESRS, a semi-structured interview that rates parkinsonian symptoms, dystonia, dyskinesias, and akathisia over the previous 7 days. The ratings include a motor examination for rigidity, tremor, reduced facial expression or speech, impaired gait/posture, postural instability, and bradykinesia/hypokinesia. Twenty-four individual items are rated on a 6-point scale: 0=Absent, 1=Minimal, 2=Mild, 3=Moderate, 4=Severe, or 5=Extreme. Frequency is included as an index of severity.

Time frame: Up to Endpoint (Up to 24 weeks)

Population: The safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. End Point (DB) is the last post baseline observation during the double blind phase.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Clinically Relevant Changes in Extrapyramidal Symptoms Assessed by the Extrapyramidal Symptom Rating Scale-Abbreviated (ESRS-A) Score0 percentage of participants
Quetiapine XRPercentage of Participants With Clinically Relevant Changes in Extrapyramidal Symptoms Assessed by the Extrapyramidal Symptom Rating Scale-Abbreviated (ESRS-A) Score0 percentage of participants
Secondary

Percentage of Participants With Sexual Dysfunction as Determined by Arizona Sexual Experiences Scale (ASEX) Total Score

Sexual dysfunction is defined as an ASEX total score of 19 or greater, or a score of 5 or greater on any item, or a score of 4 or greater on any 3 items. ASEX is a five-item rating scale that quantifies sex drive, arousal, vaginal lubrication/penile erection, ability to reach orgasm, and satisfaction from orgasm. Each of the 5 items is rated on a 6-point Likert scale, ranging from 1 to 6. The 5 items are summed to create a total score, ranging from 5 to 30, with the higher scores indicating more sexual dysfunction.

Time frame: Up to Endpoint (Up to 24 weeks)

Population: The safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure. End point double-blind (DB) is the last post baseline observation during the double blind phase.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Sexual Dysfunction as Determined by Arizona Sexual Experiences Scale (ASEX) Total Score64.3 percentage of participants
Quetiapine XRPercentage of Participants With Sexual Dysfunction as Determined by Arizona Sexual Experiences Scale (ASEX) Total Score75.6 percentage of participants
Secondary

Percentage of Participants With Shifts in Fasting Blood Glucose From Borderline to High

Percentage of participants with shifts in fasting blood glucose from borderline to high (\>=100 to \<126 mg/dL at baseline to \>=126 mg/dL at any post-baseline assessment) were reported.

Time frame: Up to Week 24

Population: Safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Shifts in Fasting Blood Glucose From Borderline to High9.1 percentage of participants
Quetiapine XRPercentage of Participants With Shifts in Fasting Blood Glucose From Borderline to High25.0 percentage of participants
Secondary

Percentage of Participants With Shifts in Fasting Blood Glucose From Normal to Borderline

Percentage of participants with shifts in fasting blood glucose from normal to borderline (\<100 mg/dL at baseline to between \>=100 and \<126 mg/dL at any post-baseline assessment) were reported.

Time frame: Up to Week 24

Population: Safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Shifts in Fasting Blood Glucose From Normal to Borderline38.7 percentage of participants
Quetiapine XRPercentage of Participants With Shifts in Fasting Blood Glucose From Normal to Borderline36.0 percentage of participants
Secondary

Percentage of Participants With Shifts in Fasting Blood Glucose From Normal to High

Percentage of participants with shifts in fasting blood glucose from normal to high (\<100 mg/dL at baseline to \>=126 mg/dL at any post-baseline assessment) were reported.

Time frame: Up to Week 24

Population: Safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Shifts in Fasting Blood Glucose From Normal to High3.2 percentage of participants
Quetiapine XRPercentage of Participants With Shifts in Fasting Blood Glucose From Normal to High4.0 percentage of participants
Secondary

Percentage of Participants With Shifts in Triglycerides From Borderline to High

Percentage of participants with shifts in triglycerides from borderline to high (\>=150 to \<200 mg/dL at baseline to \>=200 mg/dL at any post-baseline assessment) were reported.

Time frame: Up to Week 24

Population: Safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Shifts in Triglycerides From Borderline to High25.0 percentage of participants
Quetiapine XRPercentage of Participants With Shifts in Triglycerides From Borderline to High37.5 percentage of participants
Secondary

Percentage of Participants With Shifts in Triglycerides From Borderline to Very High

Percentage of participants with shifts in triglycerides from borderline to very high (\>=150 mg/dL to \<200 mg/dL at baseline to \>=500 mg/dL at any post-baseline assessment) were reported.

Time frame: Up to Week 24

Population: Safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Shifts in Triglycerides From Borderline to Very High0 percentage of participants
Quetiapine XRPercentage of Participants With Shifts in Triglycerides From Borderline to Very High0 percentage of participants
Secondary

Percentage of Participants With Shifts in Triglycerides From High to Very High

Percentage of participants with shifts in triglycerides from high to very high (\>=200 mg/dL to \<500 mg/dL at baseline to \>=500 mg/dL at any post-baseline assessment) were reported.

Time frame: Up to Week 24

Population: Safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Shifts in Triglycerides From High to Very High16.7 percentage of participants
Quetiapine XRPercentage of Participants With Shifts in Triglycerides From High to Very High0 percentage of participants
Secondary

Percentage of Participants With Shifts in Triglycerides From Normal to High

Percentage of participants with shifts in triglycerides from normal to high (\<150 milligrams per deciliter \[mg/dL\] at baseline to \>=200 mg/dL at any post-baseline assessment) were reported.

Time frame: Up to Week 24

Population: Safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Shifts in Triglycerides From Normal to High7.1 percentage of participants
Quetiapine XRPercentage of Participants With Shifts in Triglycerides From Normal to High13.6 percentage of participants
Secondary

Percentage of Participants With Shifts in Triglycerides From Normal to Very High

Percentage of participants with shifts in triglycerides from normal to very high (\<150 mg/dL at baseline to \>=500 mg/dL at any post-baseline assessment) were reported.

Time frame: Up to Week 24

Population: Safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies number of participants evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Shifts in Triglycerides From Normal to Very High0 percentage of participants
Quetiapine XRPercentage of Participants With Shifts in Triglycerides From Normal to Very High0 percentage of participants
Secondary

Percentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score

C-SSRS is a clinician-rated instrument that reports severity and frequency of suicide-related ideation and behaviors. Suicidal ideation was classified on a 5-item scale: 1 (wish to be dead), 2 (non-specific active suicidal thoughts), 3 (active suicidal ideation with any methods \[not plan\] without intent to act), 4 (active suicidal ideation with some intent to act, without specific plan), and 5 (active suicidal ideation with specific plan and intent). Suicidal behavior is classified on a 5-item scale: 6 (preparatory acts or behavior), 7 (aborted attempt), 8 (interrupted attempt), 9 (actual attempt \[non-fatal\]), and 10 (completed suicide \[only applicable for post baseline\]). Minimum total score 0, maximum total score 10; higher total scores indicate more suicidal ideation and/or suicidal behavior. If no events qualify for score of 1 to 10, score of 0 was assigned (0= no event that can be assessed on the basis of C-SSRS). Higher scores indicate greater severity.

Time frame: Up to Endpoint (Up to 24 weeks)

Population: The safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. End Point (DB) is the last post baseline observation during the double blind phase.

ArmMeasureGroupValue (NUMBER)
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score0=No Event100 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score6 = Preparatory Acts or Behavior0 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score7 = Aborted Attempt0 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score9 = Actual Attempt0 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score10 = Completed Suicide0 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score3 = Suicidal Ideation Without Plan and Intent0 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score4 = Suicidal Ideation Intent to Act Without Plan0 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score5 = Suicidal Ideation With Plan and Intent0 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score8 = Interrupted Attempt0 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score1=Wish to be Dead0 percentage of participants
SeltorexantPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score2 = Non-Specific Active Suicidal Thoughts0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score10 = Completed Suicide0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score0=No Event100 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score2 = Non-Specific Active Suicidal Thoughts0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score3 = Suicidal Ideation Without Plan and Intent0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score4 = Suicidal Ideation Intent to Act Without Plan0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score6 = Preparatory Acts or Behavior0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score7 = Aborted Attempt0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score8 = Interrupted Attempt0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score1=Wish to be Dead0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score9 = Actual Attempt0 percentage of participants
Quetiapine XRPercentage of Participants With Suicidality Assessed Using Columbia Suicide Severity Rating Scale (C-SSRS) Score5 = Suicidal Ideation With Plan and Intent0 percentage of participants
Secondary

Percentage of Participants With Sustained Remission up to Week 24

Remission is defined as Montgomery-Asberg Depression Rating Scale (MADRS) total score of less than or equal to (\<=) 12. A participant was defined as having achieved sustained remission if the MADRS total score was ≤12 at Week 12 and was sustained at Weeks 18 and 24. Participants with missing values at a given time point were imputed as non-evaluable for remission. MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition.

Time frame: Up to Week 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, N (number of participants analyzed) signifies number of participants that were evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Sustained Remission up to Week 2413.2 percentage of participants
Quetiapine XRPercentage of Participants With Sustained Remission up to Week 2419.4 percentage of participants
Secondary

Percentage of Participants With Sustained Response up to Week 24

A participant was defined as having achieved a sustained response if there was at least a 50% improvement from baseline in the MADRS total score at Week 12, and that response was maintained at Week 18 and Week 24. Participants who did not meet such criterion were considered as non-sustained responders. MADRS is a clinician-administered scale designed to measure depression severity and detects changes due to antidepressant treatment. The MADRS evaluates the following 10 items: apparent sadness, reported sadness, inner tension, reduced sleep, reduced appetite, concentration difficulties, lassitude, inability to feel, pessimistic thoughts, and suicidal thoughts. Each item is scored from 0 (item not present or normal) to 6 (severe or continuous presence of the symptoms), for a total possible score range of 0-60 which is calculated by adding the scores of all 10 items. Higher scores represent a more severe condition.

Time frame: Up to Week 24

Population: Full analysis set included all randomized participants who received at least 1 dose of study drug except 2 participants who received potentially defective IPs and were subsequently discontinued early because of the IP issues. Here, N (number of participants analyzed) signifies number of participants that were evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Sustained Response up to Week 2413.2 percentage of participants
Quetiapine XRPercentage of Participants With Sustained Response up to Week 2422.2 percentage of participants
Secondary

Percentage of Participants With Treatment-emergent Adverse Events as a Measure of Safety and Tolerability

An adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. Treatment-emergent AEs were AEs with onset during the double-blind treatment phase or that were a consequence of a preexisting condition that worsened since baseline.

Time frame: Up to 24 weeks

Population: The safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Treatment-emergent Adverse Events as a Measure of Safety and Tolerability65.4 percentage of participants
Quetiapine XRPercentage of Participants With Treatment-emergent Adverse Events as a Measure of Safety and Tolerability80.8 percentage of participants
Secondary

Percentage of Participants With Treatment-emergent Serious Adverse Events (SAEs) and Events of Special Interest

An adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. SAE was any untoward medical occurrence that at any dose may result in death, is life-threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity, is a congenital anomaly/birth defect, is a suspected transmission of any infectious agent via a medicinal product. AESIs were significant AEs that were judged to be of special interest because of clinical importance, known or suspected class effects, or based on nonclinical signals. Adverse events of special interest were cataplexy, sleep paralysis, complex, and sleep-related behaviors (parasomnias).

Time frame: Up to 24 weeks

Population: The safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP.

ArmMeasureGroupValue (NUMBER)
SeltorexantPercentage of Participants With Treatment-emergent Serious Adverse Events (SAEs) and Events of Special InterestSAEs1.9 percentage of participants
SeltorexantPercentage of Participants With Treatment-emergent Serious Adverse Events (SAEs) and Events of Special InterestAESIs13.5 percentage of participants
Quetiapine XRPercentage of Participants With Treatment-emergent Serious Adverse Events (SAEs) and Events of Special InterestAESIs5.8 percentage of participants
Quetiapine XRPercentage of Participants With Treatment-emergent Serious Adverse Events (SAEs) and Events of Special InterestSAEs3.8 percentage of participants
Secondary

Percentage of Participants With Weight Gain of >=7% of Baseline Body Weight at Week 24

Percentage of participants with weight gain of \>=7% of baseline body weight at Week 24 were reported.

Time frame: At Week 24

Population: Safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies number of participants evaluable for this outcome measure with at least one post-baseline value.

ArmMeasureValue (NUMBER)
SeltorexantPercentage of Participants With Weight Gain of >=7% of Baseline Body Weight at Week 244.3 percentage of participants
Quetiapine XRPercentage of Participants With Weight Gain of >=7% of Baseline Body Weight at Week 248.5 percentage of participants
Secondary

Percentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)

Intensity of discontinuation symptoms was assessed (anxiety-nervousness, dysphoric mood/depression, Depersonalization-Derealization, , Diaphoresis, Diarrhea, Difficulty Concentrating, Remember, Dizziness-Lightheadedness, Fatigue-Lethargy-Lack of Energy, Headaches, Increased Acuity Sound Smell Touch, Irritability, Loss of Appetite, Muscle Aches or Stiffness, Nausea-Vomiting, Paresthesias, Poor Coordination, Restlessness-Agitation, Tremor-Tremulousness, Weakness), using the Physician Withdrawal Checklist (PWC-20) administered by a trained clinician/rater. Symptoms are rated on a scale of 0 (no symptom present), 1 (mild), 2 (moderate), and 3 (severe). Total scores range from 0 (no symptom) to 24 (severe symptom) calculated by adding the scores of following 8 items: Nausea-Vomiting, Diarrhea, Poor Coordination, Diaphoresis, Tremor-Tremulousness, Dizziness-Lightheadedness, Increased Acuity Sound Smell Touch, Paresthesias. Higher scores indicates more severe symptoms.

Time frame: Up to 26 weeks

Population: The safety analysis set included all randomized participants who received at least 1 dose of study drug including the 2 participants who received the potentially defective IP. Here, 'N' (numbers of participants analyzed) signifies numbers of participants evaluable for this outcome measure; 'n' (number analyzed) signifies those participants who were evaluable at specified timepoints. End Point (DB) is the last post baseline observation during the double blind phase.

ArmMeasureGroupValue (NUMBER)
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Fatigue-Lethargy-Lack of Energy present (Endpoint[DB])50.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Diarrhea present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Depersonalization-Derealization present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Paresthesias present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Paresthesias present (Follow-up)3.3 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Headaches present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Poor Coordination present (Endpoint [DB])25.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Diaphoresis present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Poor Coordination present (Follow-up)10.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Difficulty Concentrating, Remembering present (Follow-up)26.7 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Restlessness-Agitation present (Endpoint [DB])25.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Tremor-Tremulousness present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Increased Acuity for Sound, Smell, Touch, or Pain present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Tremor-Tremulousness present (Follow-up)3.3 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Weakness present (Endpoint [DB])25.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Weakness present (Follow-up)3.3 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Anxiety-Nervousness present (Follow-up)33.3 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Anxiety-Nervousness present (Endpoint [DB])75.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Diarrhea present (Follow-up)0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Dizziness-Lightheadedness present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Difficulty Concentrating, Remembering present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Dysphoric Mood-Depression present (Endpoint [DB])50.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Insomnia present (Endpoint [DB])75.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Fatigue-Lethargy-Lack of Energy present (Follow-up)33.3 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Headaches present (Follow-up)16.7 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Insomnia present (Follow-up)33.3 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Diaphoresis present (Follow-up)6.7 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Restlessness-Agitation present (Follow-up)26.7 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Irritability present (Endpoint [DB])75.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Dizziness-Lightheadedness present (Follow-up)23.3 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Irritability present (Follow-up)23.3 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Increased Acuity for Sound, Smell, Touch, or Pain present (Follow-up)6.7 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Depersonalization-Derealization present (Follow-up)6.7 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Loss of Appetite present (Endpoint [DB])25.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Muscle Aches or Stiffness present (Endpoint [DB])50.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Muscle Aches or Stiffness present (Follow-up)16.7 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Dysphoric Mood-Depression present (Follow-up)40.0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Nausea-Vomiting present (Endpoint [DB])0 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Nausea-Vomiting present (Follow-up)3.3 percentage of participants
SeltorexantPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Loss of Appetite present (Follow-up)10.0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Paresthesias present (Endpoint [DB])0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Anxiety-Nervousness present (Endpoint [DB])33.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Depersonalization-Derealization present (Endpoint [DB])0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Depersonalization-Derealization present (Follow-up)0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Diaphoresis present (Endpoint [DB])0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Diaphoresis present (Follow-up)10.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Diarrhea present (Endpoint [DB])0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Difficulty Concentrating, Remembering present (Endpoint [DB])0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Difficulty Concentrating, Remembering present (Follow-up)39.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Dizziness-Lightheadedness present (Endpoint [DB])33.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Dizziness-Lightheadedness present (Follow-up)85.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Fatigue-Lethargy-Lack of Energy present (Endpoint[DB])66.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Fatigue-Lethargy-Lack of Energy present (Follow-up)39.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Headaches present (Endpoint [DB])33.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Headaches present (Follow-up)32.1 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Increased Acuity for Sound, Smell, Touch, or Pain present (Endpoint [DB])0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Increased Acuity for Sound, Smell, Touch, or Pain present (Follow-up)7.1 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Insomnia present (Follow-up)46.4 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Irritability present (Endpoint [DB])66.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Irritability present (Follow-up)25.0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Loss of Appetite present (Endpoint [DB])66.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Muscle Aches or Stiffness present (Endpoint [DB])33.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Nausea-Vomiting present (Endpoint [DB])0 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Nausea-Vomiting present (Follow-up)17.9 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Paresthesias present (Follow-up)3.6 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Poor Coordination present (Endpoint [DB])33.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Poor Coordination present (Follow-up)85.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Tremor-Tremulousness present (Endpoint [DB])33.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Weakness present (Follow-up)14.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Diarrhea present (Follow-up)14.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Dysphoric Mood-Depression present (Endpoint [DB])66.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Dysphoric Mood-Depression present (Follow-up)60.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Restlessness-Agitation present (Endpoint [DB])33.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Restlessness-Agitation present (Follow-up)10.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Tremor-Tremulousness present (Follow-up)14.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Weakness present (Endpoint [DB])33.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Insomnia present (Endpoint [DB])66.7 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Loss of Appetite present (Follow-up)21.4 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Muscle Aches or Stiffness present (Follow-up)14.3 percentage of participants
Quetiapine XRPercentage of Participant With Potential Withdrawal Effects Assessed by the Physician Withdrawal Checklist (PWC)Anxiety-Nervousness present (Follow-up)53.6 percentage of participants

Source: ClinicalTrials.gov · Data processed: Mar 11, 2026