MDD Clinical Trials

89 recruitingLast updated: July 16, 2026

There are 89 actively recruiting mdd clinical trials across 30 countries. Studies span Not Applicable, Phase 2, Phase 3, Phase 4, Phase 1, Early Phase 1. Top locations include New York, New York, United States, Toronto, Ontario, Canada, Prague, Czechia. Updated daily from ClinicalTrials.gov.


MDD Trials at a Glance

89 actively recruiting trials for mdd are listed on ClinicalTrialsFinder across 6 cities in 30 countries. The largest study group is Not Applicable with 37 trials, with the heaviest enrollment activity in New York, Toronto, and Prague. Lead sponsors running mdd studies include Draig Therapeutics Ltd, Emobot, and First Affiliated Hospital of Chongqing Medical University.

Treatments under study

About MDD Clinical Trials

Looking for clinical trials for MDD? There are currently 12 studies actively recruiting participants. Clinical trials offer access to new treatments before they are widely available, and every approved therapy in use today was first tested through a clinical trial.

Below you can browse trials, sign up for alerts when new MDD trials open, and view eligibility criteria for each study. Each listing includes the study phase, locations, and enrollment details.

Frequently Asked Questions

Common questions about MDD clinical trials

A clinical trial is a carefully designed research study that tests new medical treatments, drugs, devices, or approaches in human volunteers. Every approved medication and treatment available today was proven safe and effective through clinical trials.

All clinical trials are reviewed and approved by Institutional Review Boards (IRBs) — independent committees that evaluate patient safety. Trials follow strict protocols, and your health is monitored closely throughout. You can withdraw at any time.

Not necessarily. Many trials compare the new treatment against the current standard of care, meaning all participants receive active treatment. When placebos are used, they are typically combined with standard treatment, not given alone. The trial description will always specify the design.

Under the Affordable Care Act, most private insurers are required to cover routine patient care costs during a clinical trial. The sponsor typically covers the investigational treatment itself. Medicare also covers routine costs for qualifying trials.

Yes. Participation is completely voluntary. You can withdraw at any time, for any reason, without it affecting your access to standard medical care.

Each trial has specific eligibility criteria — including age, diagnosis, disease stage, prior treatments, and general health. Browse the trials listed above and check their eligibility sections. You can also contact the trial site directly to discuss your situation.

Showing 120 of 89 trials

Recruiting
Phase 1

Pattern Separation in Major Depressive Disorder

Major Depressive Disorder (MDD)
Jeffrey Miller30 enrolled1 locationNCT07139834
Recruiting
Not Applicable

Neural-Derived Plasma Exosomal MicroRNAs As Promising Novel Biomarkers for Suicidality and Treatment Outcome in Adolescents

DepressionSuicideMajor Depressive Disorder+6 more
University of Alabama at Birmingham240 enrolled2 locationsNCT05437588
Recruiting
Phase 2

ACP-211 Monotherapy for Major Depressive Disorder With Inadequate Antidepressant Response

Major Depressive Disorder (MDD)Depressive Disorder, Treatment-Resistant
ACADIA Pharmaceuticals Inc.153 enrolled23 locationsNCT07284667
Recruiting
Phase 2

A Study to Evaluate the Efficacy and Safety of SPT-300 (GlyphAllo) in Participants With Major Depressive Disorder, With or Without Anxious Distress (BUOY-1 Study)

Major Depressive Disorder (MDD)Major Depressive Disorder With Anxious Distress
Seaport Therapeutics360 enrolled61 locationsNCT07065240
Recruiting
Phase 2

Inhaled DMT for Major Depressive Disorder

SuicideSuicidal IdeationMajor Depression+2 more
Universidade Federal do Rio Grande do Norte140 enrolled5 locationsNCT07562191
Recruiting

Predictors of Relapse in Major Depressive Disorder (PERFORM-D)

Major Depressive Disorder (MDD)
Abraham Nunes252 enrolled9 locationsNCT06746155
Recruiting
Phase 1Phase 2

Cannabidiol Oil for Treatment-Resistant Major Depression

Major Depressive Disorder (MDD)Treatment Resistant Depression (TRD)
Universidade do Sul de Santa Catarina120 enrolled1 locationNCT07696871
Recruiting
Not Applicable

Repeated Real-time Biofeedback With 7-Tesla MRI for Treatment of Depression

Major Depressive Disorder (MDD)
University of Oxford60 enrolled1 locationNCT07694076
Recruiting
Phase 2

A Study to Evaluate the Effectiveness of DT-101 in Patients With Depression

Major Depressive Disorder (MDD)
Draig Therapeutics Ltd300 enrolled40 locationsNCT07300969
Recruiting
Not Applicable

Efficacy of Bright Light Therapy on Cognitive Impairment in Major Depressive Disorder and Its Neuroimaging Mechanisms: Protocol for a Randomised Controlled Trial

Cognitive ImpairmentMajor Depressive Disorder (MDD)Neuroimaging+1 more
Peking University Sixth Hospital120 enrolled2 locationsNCT07508215
Recruiting
Not Applicable

Transcutaneous Auricular Neurostimulation (tAN) for Premenstrual Dysphoric Disorder (PMDD) and Perimenopause

PerimenopausePMDD
Texas Christian University20 enrolled1 locationNCT07688720
Recruiting
Phase 3

A Study of a Deuterated Psilocin Analog (CYB003) in Humans With Major Depressive Disorder

DepressionDepression - Major Depressive DisorderDepression in Adults+3 more
Cybin IRL Limited330 enrolled68 locationsNCT06793397
Recruiting

To Establish Whether Individuals With Premenstrual Dysphoric Disorder (PMDD) Demonstrate a Different Luteal-phase Sex Hormone Profile and Ratio Compared With Asymptomatic Controls.

Premenstrual Dysphoric Disorder (PMDD)
Lancaster University50 enrolled1 locationNCT07686718
Recruiting
Not Applicable

Feasibility of Home-Based Intermittent 60Hz Light Therapy for Major Depressive Disorder (MDD)

DepressionMajor Depressive DisorderMajor Depressive Episode+1 more
NYU Langone Health40 enrolled1 locationNCT07111390
Recruiting

Type D Personality and Life Satisfaction in Bipolar Disorder Type 2 and Major Depressive Disorder

Major Depressive Disorder (MDD)Bipolar Disorder II
Elazığ Mental Health and Diseases Hospital180 enrolled1 locationNCT07679204
Recruiting
Not Applicable

Lifestyle Interventions to Prevent cOgnitive Deficits in Subjects With Depressive Symptoms: From mEchanisms to Clinical pRactice

Major Depressive Disorder (MDD)
National Science and Technology Council, Taiwan120 enrolled1 locationNCT07462013
Recruiting
Phase 2

Efficacy and Safety of Sertraline Combined With Lactobacillus Crispatus in Adolescents With Depression

Major Depressive Disorder (MDD)Probiotic Intervention
First Affiliated Hospital of Chongqing Medical University60 enrolled2 locationsNCT07539805
Recruiting
Phase 2

Sertraline Combined With Multi-Strain Probiotics for Adolescent Depression

Major Depressive Disorder (MDD)Probiotic Intervention
First Affiliated Hospital of Chongqing Medical University120 enrolled1 locationNCT07645157
Recruiting
Not Applicable

tDCS: Sleep to Mood in Depression (S2M-D)

DepressionMajor Depressive DisorderMajor Depressive Episode+1 more
NYU Langone Health35 enrolled1 locationNCT07572526
Recruiting
Phase 2

A Study to Evaluate TNX-102 SL Monotherapy Versus Placebo in Participants With Major Depressive Disorder (MDD)

DepressionMajor Depressive Disorder (MDD)Major Depressive Episode (MDE)
Tonix Pharmaceuticals, Inc.360 enrolled25 locationsNCT07621237