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Showing 1–24 of 163 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Treatment Resistant Major Depressive Disorder Clear all
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 10, 2026, 9:21 PM 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 10, 2026, 9:21 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

NMDA Receptor Antagonist Nitrous Oxide Targets Affective Brain Circuits

NCT02994433
View directory record Official record
Conditions
Depressive Disorder, Major, Depressive Disorder, Treatment-Resistant
Interventions
Nitrous Oxide, Placebo gas, MRI
Drug · Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Jun 10, 2026, 9:21 PM EDT
Completed Phase 4 Interventional

Sequenced Treatment Alternatives to Relieve Depression (STAR*D)

NCT00021528
View directory record Official record
Conditions
Depression
Interventions
citalopram, BuproprionSR, buspirone, Lithium, mirtazapine, nortriptyline, sertraline, tranylcypromine, VenlafaxineXR, Cognitive Therapy, T3 (Triiodothyronine)
Drug · Behavioral
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 75 Years
Enrollment
4,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
41
States / cities
Birmingham, Alabama • Tuscaloosa, Alabama • Chula Vista, California + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2009 · Synced Jun 10, 2026, 9:21 PM EDT
Active, not recruiting Not applicable Interventional

DBS for TRD With the Medtronic Summit RC+S

NCT04106466
View directory record Official record
Conditions
Major Depressive Disorder, Treatment Resistant Depression
Interventions
Medtronic Summit RC+S DBS system
Device
Lead sponsor
Helen Mayberg, MD
Other
Eligibility
25 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Jun 10, 2026, 9:21 PM EDT
Terminated Not applicable Interventional Results available

Cysteamine Therapy for Major Depressive Disorder

NCT00715559
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
cysteamine bitartrate
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 65 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Jun 10, 2026, 9:21 PM EDT
Completed No phase listed Observational Results available

Treatment-Resistant Depression Registry

NCT00320372
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Not listed
Lead sponsor
Cyberonics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
795 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
55
States / cities
Tucson, Arizona • Beverly Hills, California • Garden Grove, California + 46 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2015 · Synced Jun 10, 2026, 9:21 PM EDT
Completed Phase 4 Interventional Results available

A Study of Infliximab for Treatment Resistant Major Depression

NCT00463580
View directory record Official record
Conditions
Depression
Interventions
Infliximab, Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
25 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 7, 2025 · Synced Jun 10, 2026, 9:21 PM EDT
Not listed Phase 2 Interventional

An Evaluation of AXS-05 for the Treatment of TRD in Treatment-Adherent Patients

NCT04971291
View directory record Official record
Conditions
Major Depressive Disorder, Treatment Resistant Depression
Interventions
AXS-05, Bupropion SR
Drug
Lead sponsor
Axsome Therapeutics, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 25, 2021 · Synced Jun 10, 2026, 9:21 PM EDT
Recruiting Phase 2 Interventional

Investigation of the Antidepressant Effects of (2R,6R)-HNK, an Enhancer of Synaptic Glutamate Release, in Treatment-Resistant Depression

NCT06511908
View directory record Official record
Conditions
Suicide, Depressive Disorder, Treatment-Resistant, Ketamine, Molecular Mechanisms of Pharmacological Action, Neurotransmitter Agents, Excitatory Amino Acid Agents, Physiological Effects of Drugs, Depressive Disorder, Major, Depressive Disorder, Depression, Mental Disorders, Mood Disorders, Behavioral Symptoms
Interventions
(2R,6R)-hydroxynorketamine (0.25 to 2.0 mg/kg), Placebo
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Jun 10, 2026, 9:21 PM 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 10, 2026, 9:21 PM EDT
Completed Phase 4 Interventional Results available

Aripiprazole Augmentation of SSRI Therapy in Treatment Refractory Depression

NCT00608543
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Aripiprazole
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 25, 2012 · Synced Jun 10, 2026, 9:21 PM 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 10, 2026, 9:21 PM EDT
Completed Not applicable Interventional

Practicing Alternative Techniques to Heal From Depression: The PATH-D Study

NCT00871299
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Mindfulness Based Cognitive Therapy, Health Enhancement Program and medication management
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 1, 2014 · Synced Jun 10, 2026, 9:21 PM EDT
Completed Phase 2 Interventional Results available

Buprenorphine for Late-Life Treatment Resistant Depression

NCT01071538
View directory record Official record
Conditions
Depression
Interventions
Buprenorphine
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
50 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 8, 2018 · Synced Jun 10, 2026, 9:21 PM EDT
Completed Phase 2 Interventional Results available

Ketamine Plus Lithium in Treatment-Resistant Depression

NCT01880593
View directory record Official record
Conditions
Depression
Interventions
Lithium, Ketamine, Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
21 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 30, 2018 · Synced Jun 10, 2026, 9:21 PM EDT
Terminated Phase 4 Interventional

Sequential Tranylcypromine (TC), TC + Dextroamphetamine and TC + Triiodothyronine for Refractory Depression

NCT00296686
View directory record Official record
Conditions
Major Depression
Interventions
Tranylcypromine, Dextroamphetamine, Triiodothyronine
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 26, 2012 · Synced Jun 10, 2026, 9:21 PM EDT
Recruiting Not applicable Interventional

rTMS to Target Neural Connectivity and Rumination in Treatment-Resistant Depression

NCT06511544
View directory record Official record
Conditions
Depression, Treatment Resistant
Interventions
Transcranial magnetic stimulation
Device
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Sep 28, 2025 · Synced Jun 10, 2026, 9:21 PM EDT
Completed Phase 1 Interventional Results available

Antidepressant Effects of NR2B in Major Depression

NCT00472576
View directory record Official record
Conditions
Major Depression
Interventions
MK-0657, Placebo
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 55 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 2, 2012 · Synced Jun 10, 2026, 9:21 PM EDT
Completed Phase 2 Interventional Results available

Ketamine for Depression and Suicide Risk

NCT02094898
View directory record Official record
Conditions
Depression, Suicide
Interventions
Ketamine
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 10, 2017 · Synced Jun 10, 2026, 9:21 PM EDT
Completed Phase 4 Interventional Results available

Abilify as an Adjunctive Treatment for Refractory Depression

NCT00220636
View directory record Official record
Conditions
Depressive Disorder, Major
Interventions
Aripiprazole
Drug
Lead sponsor
St. Luke's-Roosevelt Hospital Center
Other
Eligibility
18 Years to 70 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 25, 2016 · Synced Jun 10, 2026, 9:21 PM EDT
Completed Phase 2 Interventional

An Investigation of the Antidepressant Efficacy of the 5-HT2A Antagonist, M100907, in Combination With Citalopram in Treatment Resistant Depression

NCT00070694
View directory record Official record
Conditions
Depressive Disorder
Interventions
MDL100.907
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jun 10, 2026, 9:21 PM EDT
Completed Phase 2 Interventional Results available

Inhaled Nitrous Oxide for Treatment-Resistant Depression: Optimizing Dosing Strategies

NCT03283670
View directory record Official record
Conditions
Depressive Disorder, Major, Depressive Disorder, Treatment-Resistant
Interventions
Nitrous Oxide 25%, Nitrous Oxide 50%, Placebo Gas
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 3, 2022 · Synced Jun 10, 2026, 9:21 PM EDT
Recruiting Phase 2 Interventional

Psilocybin rTMS for Treatment Resistant Depression

NCT06132178
View directory record Official record
Conditions
Treatment Resistant Depression, MDD, Major Depressive Disorder, Recurrent Depression, Depression
Interventions
Psilocybin, Accelerated intermittent theta burst (aiTBS) rTMS treatment, Low-dose psilocybin, Sham Accelerated intermittent theta burst (aiTBS) rTMS treatment
Drug · Device
Lead sponsor
University of Texas at Austin
Other
Eligibility
22 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Jun 10, 2026, 9:21 PM EDT