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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Treatment Resistant Major Depression Clear all
Completed Phase 2 Interventional

Mechanistic Evaluation of Response in TRD (MERIT)

NCT04608396
View directory record Official record
Conditions
Treatment Resistant Depression, Major Depressive Disorder
Interventions
AXS-05, Placebo
Drug
Lead sponsor
Axsome Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
20
States / cities
Little Rock, Arkansas • Redlands, California • Sherman Oaks, California + 17 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2022 · Synced Jun 27, 2026, 3:56 AM EDT
Recruiting Not applicable Interventional

Treatment ResistAnt Depression Subcallosal CingulatE Network DBS (TRANSCEND)

NCT06423430
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
Sham-stimulation, Active-stimulation
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
22 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
24
States / cities
Birmingham, Alabama • Los Angeles, California • Sacramento, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Treatment Resistant Geriatric Depression in Primary Care

NCT01392287
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Memantine
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
55 Years to 89 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 31, 2017 · Synced Jun 27, 2026, 3:56 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Placebo-controlled Trial of 5-hydroxytryptophan and Creatine for SSRI or SNRI Augmentation in Treatment Resistant Depression in Females

NCT02922725
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
5-hydroxytryptophan and Creatine, Placebo control
Drug · Other
Lead sponsor
Brent Michael Kious, MD, PhD
Other
Eligibility
25 Years to 40 Years · Female only
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 30, 2022 · Synced Jun 27, 2026, 3:56 AM EDT
Not yet recruiting Phase 1 Interventional

Ketamine Biomarker Validation

NCT07307768
View directory record Official record
Conditions
Treatment Resistant Depression (TRD)
Interventions
Ketamine (0.25 mg/kg), Ketamine (0.5 mg/kg), Ketamine (0.75 mg/kg)
Drug
Lead sponsor
Soterix Medical
Industry
Eligibility
18 Years to 59 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 28, 2025 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Phase 2 Interventional Results available

Study of Efficacy, Safety, Tolerability and Pharmacokinetics of MIJ821 in Participants With Treatment- Resistant Depression (TRD)

NCT05454410
View directory record Official record
Conditions
Treatment-Resistant Depression
Interventions
MIJ821 Subcutaneous Injection 1 mg, MIJ821 Subcutaneous Injection 4 mg, MIJ821 Subcutaneous Injection 10 mg, Placebo Subcutaneous Injection
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
3
States / cities
Birmingham, Alabama • Oakland Park, Florida • Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Apr 12, 2025 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Not applicable Interventional

Pivotal Trial (D02) of Vagus Nerve Stimulation (VNS) for Treatment-Resistant Depression (TRD)

NCT00533832
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
vagus nerve stimulation (VNS)
Device
Lead sponsor
Cyberonics, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
266 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2005
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 23, 2007 · Synced Jun 27, 2026, 3:56 AM EDT
Recruiting Phase 2 Interventional

A Study to Assess the Efficacy, Safety and Tolerability of VLS-01 Buccal Film, Compared to Placebo in Patients With Treatment Resistant Depression (ELUMINA)

NCT06524830
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
VLS-01-203 BU, VLS-01-BU Placebo
Drug
Lead sponsor
atai Therapeutics, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
142 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
34
States / cities
Tucson, Arizona • Little Rock, Arkansas • Rogers, Arkansas + 30 more
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Jun 27, 2026, 3:56 AM EDT
Recruiting Phase 1 Interventional

Mechanism of Action Underlying Ketamine's Antidepressant Effects: The AMPA Throughput Theory in Patients With Treatment-Resistant Major Depression

NCT03973268
View directory record Official record
Conditions
Depression, Major Depressive Disorder, Major Depression
Interventions
Arm 1, 2, 3 device interventions, Arm 2 Interventions, Arm 1, 2, 3 drug Interventions, Arm 1 and 2 Interventions
Device · Other · Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 70 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Jun 27, 2026, 3:56 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Ketamine Frequency Treatment for Major Depressive Disorder

NCT00646087
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
Ketamine, Ketamine/Saline
Drug
Lead sponsor
Essentia Health
Other
Eligibility
30 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2008
U.S. locations
1
States / cities
Duluth, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 5, 2011 · Synced Jun 27, 2026, 3:56 AM EDT
Recruiting Phase 2 Interventional

Ketamine Alcohol (in Treatment-Resistant Depression)

NCT02122562
View directory record Official record
Conditions
Magnetic Resonance Imaging, Major Depression, Alcoholism
Interventions
Ketamine
Drug
Lead sponsor
Mark Niciu
Other
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2028
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jun 27, 2026, 3:56 AM EDT
Recruiting Not applicable Interventional

RESISTance Exercise for Depression Trial

NCT06110897
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
High Dose Resistance Exercise Training, Low Dose Resistance Exercise Training Group
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 65 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
2
States / cities
Ames, Iowa • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Phase 2 Interventional Results available

eIMPACT-DM Pilot Trial: Depression Treatment to Reduce Diabetes Risk

NCT04437485
View directory record Official record
Conditions
Depression, Major Depressive Disorder, Dysthymic Disorder, Depressive Symptoms, Type 2 Diabetes, PreDiabetes, Insulin Resistance
Interventions
Good Days Ahead (GDA), Problem Solving Treatment in Primary Care (PST-PC), Antidepressant Medications, Active Control
Behavioral · Drug · Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Nov 1, 2023 · Synced Jun 27, 2026, 3:56 AM EDT
Withdrawn Phase 2 Interventional

N2O for Acute Suicidality and Depression in the ED

NCT05710887
View directory record Official record
Conditions
Suicidal Ideation, Major Depressive Disorder, Treatment Resistant Depression
Interventions
Nitrous oxide gas for inhalation, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Phase 2 Interventional Results available

Pioglitazone for the Treatment of Major Depressive Disorder Comorbid With Metabolic Syndrome

NCT00671515
View directory record Official record
Conditions
Depressive Disorder, Major, Metabolic Syndrome X
Interventions
Pioglitazone
Drug
Lead sponsor
Joseph Calabrese, MD
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 Jan 25, 2017 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Not applicable Interventional

Cognitive Behavioral Therapy for Insomnia with RTMS

NCT04258618
View directory record Official record
Conditions
Depression, Insomnia
Interventions
CBT-I (Cognitive Behavioral Therapy for Insomnia) with rTMS, Repetitive Transcranial Magnetic Stimulation
Behavioral · Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 85 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 23, 2024 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Phase 1 Interventional Results available

Slow Wave Induction by Propofol to Eliminate Depression (SWIPED) I

NCT04680910
View directory record Official record
Conditions
Treatment-resistant Depression
Interventions
Propofol, Electroencephalography (EEG), Slow-Wave Activity
Drug · Diagnostic Test
Lead sponsor
Washington University School of Medicine
Other
Eligibility
60 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Jun 27, 2026, 3:56 AM EDT
Terminated Phase 2 Interventional Results available

The UTHealth Ketamine Project

NCT02882711
View directory record Official record
Conditions
Treatment Resistant Depression, Major Depressive Disorder, Bipolar Disorder
Interventions
Ketamine
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 23, 2020 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Not applicable Interventional

Dose-Optimized and Spaced Transcranial Direct Current Stimulation for Treatment-Resistant Depression

NCT06730841
View directory record Official record
Conditions
Treatment Resistant Depression, Major Depressive Disorder
Interventions
Dose-Optimized and Spaced Transcranial Direct Current Stimulation, Spaced Transcranial Direct Current Stimulation, Sham Transcranial Direct Current Stimulation
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 85 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Nov 19, 2025 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Not applicable Interventional Results available

Ketamine Versus Placebo for Treatment Resistant Major Depressive Disorder

NCT01667926
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Ketamine, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Phase 4 Interventional Results available

Optimizing Outcomes of Treatment-Resistant Depression in Older Adults

NCT02960763
View directory record Official record
Conditions
Treatment Resistant Depression, Major Depressive Disorder, Treatment-Refractory Depression, Late Life Depression, Geriatric Depression
Interventions
Aripiprazole Augmentation, Bupropion Augmentation, Switch to bupropion, Lithium Augmentation, Switch to nortriptyline
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
60 Years and older
Enrollment
742 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
4
States / cities
Los Angeles, California • St Louis, Missouri • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2024 · Synced Jun 27, 2026, 3:56 AM EDT
Terminated Phase 4 Interventional Results available

N-methyl-D-aspartate Antagonist (Ketamine) Augmentation of Electroconvulsive Treatment for Severe Major Depression

NCT01260649
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
ketamine, IV Saline, ECT, Muscle Relaxant, Anesthetic Agents
Drug · Other · Procedure
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 21, 2017 · Synced Jun 27, 2026, 3:56 AM EDT
Recruiting Not applicable Interventional

Brain Stimulation for Severe Depression

NCT05393622
View directory record Official record
Conditions
Depression Severe
Interventions
INTRACALVARIAL PREFRONTAL CORTICAL STIMULATION (IpCS) IN SEVERE TREATMENT-RESISTANT DEPRESSION
Device
Lead sponsor
Inner Cosmos Inc
Industry
Eligibility
21 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
2
States / cities
Boston, Massachusetts • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Jun 27, 2026, 3:56 AM EDT
Completed Not applicable Interventional Results available

Administration of Subanesthetic Dose of Ketamine and Electroconvulsive Treatment for Treatment Resistant Depression

NCT02522377
View directory record Official record
Conditions
Treatment Resistant Depression, Major Depressive Disorder, Severe Depression
Interventions
Ketamine, Midazolam
Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 28, 2019 · Synced Jun 27, 2026, 3:56 AM EDT