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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Refractory Depression Clear all
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 Jul 22, 2026, 1:26 AM EDT
Active, not recruiting Not applicable Interventional

Transcranial Electric Stimulation Therapy (TEST) for Treatment Resistant Depression (TRD)

NCT05172271
View directory record Official record
Conditions
Major Depressive Disorder, Bipolar Disorder, Unipolar Major Depression
Interventions
MagPro TMS Stimulator and coil, Thymatron(R) System IV, Magnetic Resonance Imaging Scanner, ECT device without stimulation
Device · Other
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
25 Years to 64 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 24, 2026 · Synced Jul 22, 2026, 1:26 AM 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 Jul 22, 2026, 1:26 AM EDT
Completed Phase 2 Interventional Results available

A Randomized, Placebo-Controlled, Double-Blind Study to Assess Safety and Efficacy of PCN-101 in TRD

NCT05414422
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
PCN-101, Placebo
Drug
Lead sponsor
Perception Neuroscience
Industry
Eligibility
18 Years to 65 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
13
States / cities
Little Rock, Arkansas • Garden Grove, California • La Jolla, California + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2024 · Synced Jul 22, 2026, 1:26 AM EDT
Completed Phase 3 Interventional

Internet-Based Program With or Without Telephone-Based Problem-Solving Training in Helping Long-Term Survivors of Hematopoietic Stem Cell Transplant Cope With Late Complications

NCT00799461
View directory record Official record
Conditions
Accelerated Phase Chronic Myelogenous Leukemia, Adult Acute Lymphoblastic Leukemia in Remission, Adult Acute Myeloid Leukemia in Remission, Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities, Adult Acute Myeloid Leukemia With Inv(16)(p13;q22), Adult Acute Myeloid Leukemia With t(15;17)(q22;q12), Adult Acute Myeloid Leukemia With t(16;16)(p13;q22), Adult Acute Myeloid Leukemia With t(8;21)(q22;q22), Atypical Chronic Myeloid Leukemia, BCR-ABL Negative, Blastic Phase Chronic Myelogenous Leukemia, Cancer Survivor, Chronic Eosinophilic Leukemia, Chronic Myelomonocytic Leukemia, Chronic Neutrophilic Leukemia, Chronic Phase Chronic Myelogenous Leukemia, de Novo Myelodysplastic Syndromes, Depression, Disseminated Neuroblastoma, Extranodal Marginal Zone B-cell Lymphoma of Mucosa-associated Lymphoid Tissue, Fatigue, Long-term Effects Secondary to Cancer Therapy in Adults, Myelodysplastic/Myeloproliferative Neoplasm, Unclassifiable, Nodal Marginal Zone B-cell Lymphoma, Noncontiguous Stage II Adult Burkitt Lymphoma, Noncontiguous Stage II Adult Diffuse Large Cell Lymphoma, Noncontiguous Stage II Adult Diffuse Mixed Cell Lymphoma, Noncontiguous Stage II Adult Diffuse Small Cleaved Cell Lymphoma, Noncontiguous Stage II Adult Immunoblastic Large Cell Lymphoma, Noncontiguous Stage II Adult Lymphoblastic Lymphoma, Noncontiguous Stage II Grade 1 Follicular Lymphoma, Noncontiguous Stage II Grade 2 Follicular Lymphoma, Noncontiguous Stage II Grade 3 Follicular Lymphoma, Noncontiguous Stage II Mantle Cell Lymphoma, Noncontiguous Stage II Marginal Zone Lymphoma, Noncontiguous Stage II Small Lymphocytic Lymphoma, Previously Treated Myelodysplastic Syndromes, Primary Myelofibrosis, Psychosocial Effects of Cancer and Its Treatment, Recurrent Adult Acute Lymphoblastic Leukemia, Recurrent Adult Acute Myeloid Leukemia, Recurrent Adult Burkitt Lymphoma, Recurrent Adult Diffuse Large Cell Lymphoma, Recurrent Adult Diffuse Mixed Cell Lymphoma, Recurrent Adult Diffuse Small Cleaved Cell Lymphoma, Recurrent Adult Hodgkin Lymphoma, Recurrent Adult Immunoblastic Large Cell Lymphoma, Recurrent Adult Lymphoblastic Lymphoma, Recurrent Cutaneous T-cell Non-Hodgkin Lymphoma, Recurrent Grade 1 Follicular Lymphoma, Recurrent Grade 2 Follicular Lymphoma, Recurrent Grade 3 Follicular Lymphoma, Recurrent Mantle Cell Lymphoma, Recurrent Marginal Zone Lymphoma, Recurrent Small Lymphocytic Lymphoma, Refractory Chronic Lymphocytic Leukemia, Refractory Hairy Cell Leukemia, Refractory Multiple Myeloma, Relapsing Chronic Myelogenous Leukemia, Secondary Acute Myeloid Leukemia, Secondary Myelodysplastic Syndromes, Splenic Marginal Zone Lymphoma, Stage I Multiple Myeloma, Stage II Multiple Myeloma, Stage III Adult Burkitt Lymphoma, Stage III Adult Diffuse Large Cell Lymphoma, Stage III Adult Diffuse Mixed Cell Lymphoma, Stage III Adult Diffuse Small Cleaved Cell Lymphoma, Stage III Adult Hodgkin Lymphoma, Stage III Adult Immunoblastic Large Cell Lymphoma, Stage III Adult Lymphoblastic Lymphoma, Stage III Chronic Lymphocytic Leukemia, Stage III Grade 1 Follicular Lymphoma, Stage III Grade 2 Follicular Lymphoma, Stage III Grade 3 Follicular Lymphoma, Stage III Mantle Cell Lymphoma, Stage III Marginal Zone Lymphoma, Stage III Multiple Myeloma, Stage III Small Lymphocytic Lymphoma, Stage IV Adult Burkitt Lymphoma, Stage IV Adult Diffuse Large Cell Lymphoma, Stage IV Adult Diffuse Mixed Cell Lymphoma, Stage IV Adult Diffuse Small Cleaved Cell Lymphoma, Stage IV Adult Hodgkin Lymphoma, Stage IV Adult Immunoblastic Large Cell Lymphoma, Stage IV Adult Lymphoblastic Lymphoma, Stage IV Chronic Lymphocytic Leukemia, Stage IV Grade 1 Follicular Lymphoma, Stage IV Grade 2 Follicular Lymphoma, Stage IV Grade 3 Follicular Lymphoma, Stage IV Mantle Cell Lymphoma, Stage IV Marginal Zone Lymphoma, Stage IV Small Lymphocytic Lymphoma
Interventions
internet-based intervention, questionnaire administration, psychosocial assessment and care, assessment of therapy complications, management of therapy complications, fatigue assessment and management, counseling intervention
Other · Procedure
Lead sponsor
Fred Hutchinson Cancer Research Center/University of Washington Cancer Consortium
Other
Eligibility
18 Years and older
Enrollment
1,337 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2008
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 6, 2012 · Synced Jul 22, 2026, 1:26 AM EDT
Terminated Phase 4 Interventional

Use of Risperidone in ECT for Treatment Resistant Depression

NCT00203723
View directory record Official record
Conditions
Major Depression
Interventions
Risperidone
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 89 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 17, 2006 · Synced Jul 22, 2026, 1:26 AM 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 Jul 22, 2026, 1:26 AM EDT
Active, not recruiting Phase 3 Interventional

Efficacy, Safety, and Tolerability of Two Administrations of COMP360 in Participants With TRD

NCT05711940
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
Psilocybin
Drug
Lead sponsor
COMPASS Pathways
Industry
Eligibility
18 Years and older
Enrollment
572 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
62
States / cities
Gilbert, Arizona • Bellflower, California • Encino, California + 50 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced Jul 22, 2026, 1:26 AM EDT
Recruiting Not applicable Interventional

Closed-Loop Deep Brain Stimulation for Major Depression

NCT04004169
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Stimulation-ON, Stimulation-OFF, Stimulation-ON Active Control
Device
Lead sponsor
Andrew Krystal
Other
Eligibility
22 Years to 70 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2035
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 30, 2023 · Synced Jul 22, 2026, 1:26 AM EDT
Not listed Not applicable Interventional

Near-Infrared Laser Stimulation for Various Neurological Conditions

NCT04489082
View directory record Official record
Conditions
Refractory Depression, Anxiety Disorders, Neurodegenerative Diseases, Traumatic Brain Injury, Chronic Traumatic Encephalopathy
Interventions
Near Infrared Laser Stimulation
Device
Lead sponsor
Neurological Associates of West Los Angeles
Other
Eligibility
18 Years and older · Female only
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Sep 27, 2022 · Synced Jul 22, 2026, 1:26 AM EDT
Completed Phase 4 Interventional

Combination Therapy in Patients With Depression

NCT00485862
View directory record Official record
Conditions
Depressive Symptoms
Interventions
Atomoxetine Hydrochloride, Sertraline, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 12, 2007 · Synced Jul 22, 2026, 1:26 AM EDT
Completed Phase 4 Interventional

RCT of Brain Longitudinal Biomarker Study (OPT-Neuro RCT)

NCT05531591
View directory record Official record
Conditions
Depression, Dementia, Mild Cognitive Impairment, 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
Centre for Addiction and Mental Health
Other
Eligibility
60 Years and older
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
3
States / cities
Los Angeles, California • St Louis, Missouri • New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 24, 2024 · Synced Jul 22, 2026, 1:26 AM EDT
Completed Not applicable Interventional

Exercise to Augment TMS in Those With Treatment Resistant Depression

NCT05913401
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
Aerobic Exercise, Video Watching
Behavioral
Lead sponsor
Butler Hospital
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jul 22, 2026, 1:26 AM EDT
Completed Not applicable Interventional Results available

Augmentation of Treatment-Resistant Depression With An Analog of the Neuroactive Steroid Allopregnanolone

NCT02900092
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Ganaxolone
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
50 Years to 75 Years · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 17, 2019 · Synced Jul 22, 2026, 1:26 AM EDT
Terminated No phase listed Observational

The RECOVER sUb-study, Which Leverages quaNtitative and Credible Research tOols From Verily, Will providE Assessment measuRes for Depressive Episodes

NCT04753385
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
Not listed
Lead sponsor
LivaNova
Industry
Eligibility
18 Years and older
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
33
States / cities
Birmingham, Alabama • Costa Mesa, California • Los Angeles, California + 29 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Jul 22, 2026, 1:26 AM EDT
Completed Phase 2 Interventional

Nicotinic Receptor Augmentation of SSRI Antidepressants

NCT00319319
View directory record Official record
Conditions
Depressive Disorder
Interventions
Mecamylamine hydrochloride (Inversine)
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 18, 2007 · Synced Jul 22, 2026, 1:26 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

Intravenous Ketamine Effects on Functional Neuroanatomy

NCT04205890
View directory record Official record
Conditions
Depression
Interventions
Ketamine
Drug
Lead sponsor
Neurological Associates of West Los Angeles
Other
Eligibility
18 Years to 70 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated May 31, 2020 · Synced Jul 22, 2026, 1:26 AM EDT
Completed Phase 4 Interventional Results available

Study Comparing Outcomes for Patients With Treatment Resistant Depression Who Receive VNS Therapy at Different Doses

NCT00305565
View directory record Official record
Conditions
Depression
Interventions
VNS Therapy
Device
Lead sponsor
Cyberonics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
331 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
26
States / cities
Tucson, Arizona • Sacramento, California • Marietta, Georgia + 21 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2014 · Synced Jul 22, 2026, 1:26 AM EDT
Active, not recruiting Not applicable Interventional

DBS of the Lateral Habenula in Treatment-Resistant Depression

NCT01798407
View directory record Official record
Conditions
Treatment Resistant Major Depressive Disorder
Interventions
Activa Tremor Control Sys (DBS Implant), Randomized, staggered withdrawal phase
Device · Other
Lead sponsor
Wayne Goodman MD
Other
Eligibility
21 Years to 70 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 27, 2025 · Synced Jul 22, 2026, 1:26 AM 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 Jul 22, 2026, 1:26 AM EDT
Completed Phase 4 Interventional Results available

Comparative Effectiveness Research Trial for Antidepressant Incomplete and Non-responders With TRD

NCT02977299
View directory record Official record
Conditions
Treatment Resistant Major Depressive Disorder
Interventions
Aripiprazole, Repetitive transcranial magnetic stimulation (rTMS), Venlafaxine XR
Drug · Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 80 Years
Enrollment
278 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
11
States / cities
Birmingham, Alabama • Los Angeles, California • Stanford, California + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Jul 22, 2026, 1:26 AM EDT
Completed Not applicable Interventional

Exercise in Treatment Resistant Depression (TRD): A Feasibility Study

NCT01383811
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
Moderate Intensity Aerobic Exercise, Wait-list
Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 5, 2014 · Synced Jul 22, 2026, 1:26 AM EDT
Active, not recruiting Phase 2 Interventional

Mindfulness Engaged Neurostimulation for Depression

NCT06399406
View directory record Official record
Conditions
Depression, Treatment Resistant Depression, Major Depressive Disorder, Depressive Disorder
Interventions
Medi-TBS
Combination Product
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Jul 22, 2026, 1:26 AM EDT
Terminated Phase 2 Interventional Results available

Proof-of-Concept Trial of CERC-501 Augmentation of Antidepressant Therapy in Treatment-Resistant Depression

NCT01913535
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
CERC-501, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
4
States / cities
Chicago, Illinois • Wichita, Kansas • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 1:26 AM EDT