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Showing 1–24 of 112 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Adjunctive Treatment of Major Depressive Disorder Clear all
Completed Phase 2 Interventional Results available

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

NCT03321526
View directory record Official record
Conditions
Depressive Disorder, Major
Interventions
JNJ-42847922, Placebo Matching to JNJ-42847922, Quetiapine XR, Placebo Matching to Quetiapine XR, Selective Serotonin Reuptake Inhibitor (SSRI), Serotonin-Norepinephrine Reuptake Inhibitor (SNRI)
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 70 Years
Enrollment
107 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
50
States / cities
Phoenix, Arizona • Tempe, Arizona • Rogers, Arkansas + 41 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2025 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

Clinical Trial Evaluating ITI-007 as an Adjunctive Therapy to Lithium or Valproate for the Treatment of Bipolar Depression

NCT02600507
View directory record Official record
Conditions
Bipolar Depression
Interventions
Lumateperone (ITI-007), Placebo
Drug
Lead sponsor
Intra-Cellular Therapies, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
529 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
42
States / cities
Rogers, Arkansas • Cerritos, California • Costa Mesa, California + 39 more
Source: ClinicalTrials.gov public record
Updated May 16, 2023 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Efficacy and Safety of JNJ-42847922 as Adjunctive Therapy to Antidepressants in Adult Participants With Major Depressive Disorder Who Have Responded Inadequately to Antidepressant Therapy

NCT03227224
View directory record Official record
Conditions
Depressive Disorder, Major
Interventions
Placebo, JNJ-42847922
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 70 Years
Enrollment
287 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
33
States / cities
Anaheim, California • Chino, California • Lemon Grove, California + 24 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2025 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

A Study to Assess the Efficacy and Safety of REL-1017 as Adjunctive Treatment for Major Depressive Disorder (MDD)

NCT04688164
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
REL-1017, Placebo
Drug
Lead sponsor
Relmada Therapeutics, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
227 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
11
States / cities
Miami, Florida • Miami Springs, Florida • Palm Bay, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 26, 2024 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

Study of the Safety and Efficacy of Fixed Dose OPC-34712 as Adjunctive Therapy in the Treatment of Adults With Major Depressive Disorder (the Pyxis Trial)

NCT01360645
View directory record Official record
Conditions
Depressive Disorder, Depression, Depressive Disorder, Major, Mood Disorders, Mental Disorders
Interventions
OPC-34712 + ADT, Placebo + ADT
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
826 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
37
States / cities
Arcadia, California • Beverly Hills, California • Fresno, California + 34 more
Source: ClinicalTrials.gov public record
Updated Nov 25, 2015 · Synced Jul 23, 2026, 10:39 PM EDT
Terminated Phase 3 Interventional Results available

Quetiapine Extended Release (XR) Treatment of Major Depressive Disorder With Comorbid Generalized Anxiety Disorder

NCT00868374
View directory record Official record
Conditions
Major Depressive Disorder, Generalized Anxiety Disorder
Interventions
Quetiapine XR, Placebo
Drug
Lead sponsor
Keming Gao
Other
Eligibility
18 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 28, 2016 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 2 Interventional Results available

A Study of JNJ-61393215 in the Treatment of Depression

NCT04080752
View directory record Official record
Conditions
Major Depressive Disorder With Anxious Distress
Interventions
JNJ-61393215, Placebo
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 64 Years
Enrollment
222 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
9
States / cities
Garden Grove, California • Alpharetta, Georgia • Atlanta, Georgia + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2025 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

A Long-Term Safety Study of ALKS 5461

NCT02141399
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
ALKS 5461
Drug
Lead sponsor
Alkermes, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
1,485 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
123
States / cities
Birmingham, Alabama • Tucson, Arizona • Little Rock, Arkansas + 105 more
Source: ClinicalTrials.gov public record
Updated Dec 13, 2018 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

Clinical Trial of Lumateperone as Adjunctive Therapy in the Treatment of Patients With Major Depressive Disorder

NCT04985942
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Lumateperone, Placebo
Drug
Lead sponsor
Intra-Cellular Therapies, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
485 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
15
States / cities
Phoenix, Arizona • Glendale, California • Oceanside, California + 12 more
Source: ClinicalTrials.gov public record
Updated May 1, 2025 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 2 Interventional Results available

Study of Safety & Tolerability of OPC-34712 as Adjunctive Therapy in Treatment of Adult Patients With Major Depressive Disorder

NCT01447576
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
ADT, OPC-34712
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,036 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
32
States / cities
Arcadia, California • San Diego, California • Sherman Oaks, California + 28 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2015 · Synced Jul 23, 2026, 10:39 PM EDT
Recruiting Phase 2 Interventional

A Study to Evaluate the Effectiveness of DT-101 as an Adjunctive Treatment in Patients With Depression

NCT07610473
View directory record Official record
Conditions
Major Depressive Disorder (MDD)
Interventions
DT-101, Placebo
Drug
Lead sponsor
Draig Therapeutics Ltd
Industry
Eligibility
18 Years to 75 Years
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
11
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Lafayette, California + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 2 Interventional

ARTDeCo Study: A Study of RO4995819 in Patients With Major Depressive Disorder And Inadequate Response to Ongoing Antidepressant Treatment

NCT01457677
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Placebo, RO4995819
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 65 Years
Enrollment
357 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
43
States / cities
Phoenix, Arizona • Oakland, California • Redlands, California + 37 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2016 · Synced Jul 23, 2026, 10:39 PM EDT
Terminated Phase 3 Interventional Results available

Study of Adjunctive or Monotherapy Rapastinel Treatment in Patients With Major Depressive Disorder (MDD)

NCT03668600
View directory record Official record
Conditions
Depressive Disorder, Major
Interventions
Rapastinel
Drug
Lead sponsor
Naurex, Inc, an affiliate of Allergan plc
Industry
Eligibility
18 Years to 75 Years
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
74
States / cities
Birmingham, Alabama • Dothan, Alabama • Phoenix, Arizona + 67 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2020 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

A Study of Rapastinel as Adjunctive Therapy in Major Depressive Disorder (RAP-MD-02)

NCT02943564
View directory record Official record
Conditions
Depressive Disorder, Major
Interventions
Rapastinel, Placebo
Drug
Lead sponsor
Naurex, Inc, an affiliate of Allergan plc
Industry
Eligibility
18 Years to 65 Years
Enrollment
658 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
66
States / cities
Birmingham, Alabama • Tucson, Arizona • Little Rock, Arkansas + 56 more
Source: ClinicalTrials.gov public record
Updated Dec 26, 2019 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 2 Interventional

A Clinical Trial of Adjunctive and Monotherapy PRAX-114 in Participants With Major Depressive Disorder

NCT04969510
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
10 mg PRAX-114, 20 mg PRAX-114, 40 mg PRAX-114, 60 mg PRAX-114, Placebo
Drug
Lead sponsor
Praxis Precision Medicines
Industry
Eligibility
18 Years to 65 Years
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
23
States / cities
Lafayette, California • Lemon Grove, California • Oceanside, California + 20 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2022 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

A Study of Seltorexant as Adjunctive Therapy to Antidepressants in Adult and Elderly Participants With Major Depressive Disorder With Insomnia Symptoms Who Have Responded Inadequately to Antidepressant and Long-term Safety Extension Treatment With Seltorexant

NCT04533529
View directory record Official record
Conditions
Depressive Disorder, Major
Interventions
Seltorexant, Placebo
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 74 Years
Enrollment
588 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
51
States / cities
Anaheim, California • Cerritos, California • Irvine, California + 42 more
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

Brexpiprazole (OPC-34712) as an Adjunctive Treatment in Adults With Major Depressive Disorder and Anxiety Symptoms

NCT02013531
View directory record Official record
Conditions
Major Depressive Disorder, Anxiety
Interventions
Brexpiprazole
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
21
States / cities
Tuscon, Arizona • Garden Grove, California • Oceanside, California + 18 more
Source: ClinicalTrials.gov public record
Updated Mar 28, 2016 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 2 Interventional

MARIGOLD Study: A Study of RO4917523 Versus Placebo as Adjunctive Therapy in Patients With Major Depressive Disorder and an Inadequate Response to Ongoing Antidepressant Therapy

NCT01437657
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Placebo, RO4917523 0.5 mg, RO4917523 1.5 mg
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 70 Years
Enrollment
319 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
28
States / cities
Little Rock, Arkansas • Costa Mesa, California • Garden Grove, California + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 1, 2016 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of Armodafinil Treatment as Adjunctive Therapy in Adults With Major Depression Associated With Bipolar I Disorder

NCT01072929
View directory record Official record
Conditions
Depression
Interventions
Armodafinil, Placebo
Drug
Lead sponsor
Cephalon
Industry
Eligibility
18 Years to 65 Years
Enrollment
433 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
40
States / cities
Birmingham, Alabama • Beverly Hills, California • Garden Grove, California + 36 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2016 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

A Study of ALKS 5461 for the Treatment of Major Depressive Disorder (MDD) - the FORWARD-4 Study

NCT02158533
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
High Dose ALKS 5461, Low Dose ALKS 5461, Placebo
Drug
Lead sponsor
Alkermes, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
385 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
42
States / cities
Birmingham, Alabama • Tucson, Arizona • Carson, California + 37 more
Source: ClinicalTrials.gov public record
Updated Aug 13, 2019 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

Efficacy, Safety and Tolerability of Cariprazine as an Adjunctive Treatment to Antidepressant Therapy (ADT) in Patients With Major Depressive Disorder (MDD)

NCT01715805
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Cariprazine, Placebo, Antidepressant Therapy (ADT)
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,022 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
83
States / cities
Tucson, Arizona • Little Rock, Arkansas • Cerritos, California + 68 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2019 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Not applicable Interventional

Triple Chronotherapy in Adolescents

NCT03679962
View directory record Official record
Conditions
Depressive Disorder, Major, Bipolar Depression, Suicidal Ideation
Interventions
Triple Chronotherapy, Treatment as Usual
Behavioral
Lead sponsor
Billings Clinic
Other
Eligibility
12 Years to 17 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Billings, Montana
Source: ClinicalTrials.gov public record
Updated Aug 15, 2023 · Synced Jul 23, 2026, 10:39 PM EDT
Terminated Phase 2 Interventional Results available

A Study to Evaluate the Safety and Efficacy of TS-121 as an Adjunctive Treatment for Major Depressive Disorder

NCT03093025
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
TS-121 10 mg, TS-121 50 mg, Placebo
Drug
Lead sponsor
Taisho Pharmaceutical R&D Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
22
States / cities
Little Rock, Arkansas • Rogers, Arkansas • Garden Grove, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2020 · Synced Jul 23, 2026, 10:39 PM EDT
Completed Phase 3 Interventional Results available

A Study of Rapastinel as Adjunctive Therapy in the Prevention of Relapse in Patients With Major Depressive Disorder

NCT02951988
View directory record Official record
Conditions
Depressive Disorder, Major
Interventions
Rapastinel, Placebo-matching Rapastinel
Drug
Lead sponsor
Naurex, Inc, an affiliate of Allergan plc
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,304 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
137
States / cities
Birmingham, Alabama • Dothan, Alabama • Phoenix, Arizona + 112 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2020 · Synced Jul 23, 2026, 10:39 PM EDT