Clinical trials
Major Depression Disorder clinical trials
Below are recruiting major depression disorder clinical trials, each written for real people, not researchers. We’re tracking 504 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT03953014Recruiting
Genetic study of antidepressant side effects in young people
This trial studies whether genes (using a saliva sample) can help explain why some young people feel more “disinhibited” after taking antidepressants like SSRIs. If you’ve had depression, anxiety, or OCD and have used an SSRI, your information and genetics may help improve how antidepressants are chosen and monitored.
Calgary, AlbertaAges 6–17 - NCT04004169Recruiting
Closed-loop deep brain stimulation for long-lasting depression
This study tests a special kind of brain stimulation that can adjust to your brain signals while treating major depression that has not improved with standard treatments. It may help people with severe, long-term treatment-resistant depression, but it requires brain surgery and frequent visits.
San Francisco, CaliforniaAges 22–70 - NCT03736538Enrolling by invitationPhase 1
Nitrous oxide for suicidal thoughts in depression
This Phase 1 study tests whether breathing nitrous oxide can safely reduce suicidal thoughts in adults with major depression. It may help people whose depression is causing moderate to severe suicidal thinking, by studying a fast-acting treatment approach.
St Louis, MissouriAges 18–65 - NCT03537794Recruiting
Brain scan study in treatment-resistant depression
This study compares brain synaptic density in people with treatment-resistant depression, people with depression that responds to treatment, and healthy controls. It uses a PET scan to measure synaptic density and aims to understand the biological differences.
Toronto, OntarioAges 25–65 - NCT03065335RecruitingPhase 1
Ketamine plus brain imaging to study response in depression
This early-stage study tests how ketamine given once and then repeatedly may change brain signals and related biomarkers in people with major depression. If you’re eligible, the team will use brain imaging and assessments to see who responds and why.
Bethesda, MarylandAges 18–65 - NCT02994433RecruitingPhase 1
Testing nitrous oxide for depression brain circuit activity
This early study tests whether nitrous oxide, aimed at specific brain circuits, can change depression-related brain activity. It is mainly for adults with major depression or treatment-resistant depression, and includes brain imaging during the study.
St Louis, MissouriAges 18–65 - NCT00762866Enrolling by invitation
Study of mental health traits using genetic and brain measurements
This study collects information about mental health symptoms and body/genetic samples to better understand how different mental health conditions are related. Some people may also have brain scans (PET or MRI) if they can safely complete them.
Nashville, TennesseeAges 16–65 - NCT00018057RecruitingPhase 2
Brain study of pediatric anxiety disorders
This study looks at how the brain works in children and adults with anxiety disorders. It uses brain scans (fMRI) and other safe tests to understand anxiety better.
Bethesda, MarylandAges 8–65 - NCT05423275Recruiting
Light treatment to help you stop antidepressants safely
This study tests whether a “light and ion” treatment can help people with major depression (MDD) who are doing well on antidepressants safely reduce or stop them. You must be in remission and be willing to discontinue for reasons like side effects or personal preference.
Vancouver, British ColumbiaAges 19–65 - NCT07484217RecruitingPhase 3
Testing solriamfetol for depression with daytime sleepiness
This study tests if the drug solriamfetol can help people with major depression who also feel very tired during the day. It aims to improve both mood and daytime sleepiness.
Tucson, ArizonaAges 18–65 - NCT07217444Recruiting
Deep TMS for depression in teens
This trial tests whether a non-invasive brain stimulation technique called deep transcranial magnetic stimulation (dTMS) can help teens with moderate to severe depression feel better. It involves wearing a special magnetic coil on the head during several sessions.
Cincinnati, OhioAges 14–18 - NCT06136546RecruitingPhase 2
Infliximab for depression with cognitive problems
This trial tests if a medicine called infliximab, given through an IV, can help improve thinking and memory problems in people with moderate to severe depression who also have high inflammation levels. It aims to see if lowering inflammation can ease both mood and cognitive symptoms.
Boston, MassachusettsAges 25–50 - NCT07015944Recruiting
Moving on after breast cancer: a depression trial for survivors in Pakistan
This study tests a program called "Moving on After Breast Cancer" for women in Pakistan who have finished breast cancer treatment and now have depression. The goal is to see if this program helps them feel better emotionally.
Karachi, SindhAges 18 years+ - NCT07462013Recruiting
Lifestyle changes to prevent memory loss with depression
This study tests if healthy lifestyle changes can protect memory and thinking skills in people with depression who have no or mild memory problems.
Taichung, TaichungAges 50–80 - NCT06983405Recruiting
Physical therapy for depression and quality of life pilot
This study is testing whether adding physical therapy to your usual depression care can improve your quality of life while you are in the hospital. If you are an adult admitted to the psychiatry unit with major depression, you may be able to join.
Zaragoza, AragonAges 18 years+ - NCT06390462Recruiting
Counseling for teens in school-based primary care
This study tests a brief counseling approach called Interpersonal Counseling for Adolescents (IPC-A) in school settings. It aims to help teens with emotional or social challenges before they become more serious, and it's designed for those who aren't already in mental health treatment.
HämeenlinnaAges 13–16 - NCT06130371Recruiting
Stress, Inflammation & Brain in Depression vs. Severe PMS
This study looks at how stress and inflammation affect the brain in women with major depression compared to women with severe PMS (PMDD). It could help find better ways to understand and treat these mood disorders.
Tübingen, Baden-WurttembergAges 18–40 - NCT03665831Recruiting
Deep TMS for depression and memory problems in older adults
This study tests a type of brain stimulation called Deep TMS to help reduce depression and improve or stabilize memory-related symptoms in older adults with Alzheimer’s disease. It’s mainly for people whose depression did not improve or could not be tolerated with antidepressant medicine.
Toronto, OntarioAges 60 years+ - NCT07462637Recruiting
Light therapy for depression in unipolar and bipolar disorder
This study tests how well light therapy works for moderate to severe depression in people with or without bipolar disorder. It includes a possible MRI brain scan to understand how light affects the brain. You must not have certain eye conditions or high suicide risk.
ParisAges 18–65 - NCT07554755Recruiting
Transcranial Stimulation for Teen Depression with Self-Injury
This trial tests a non-invasive brain stimulation treatment (TIS) for teenagers aged 12–22 with depression who injure themselves without wanting to die. The goal is to reduce depression symptoms and self-injury urges.
Hefei, AnhuiAges 12–22 - NCT06656416RecruitingPhase 2
Study of ALTO-100 for bipolar depression
This study tests an investigational drug called ALTO-100 for people with bipolar disorder who are currently experiencing depression. It aims to see if ALTO-100 can help improve depressive symptoms when added to your current mood stabilizer or antipsychotic medication.
Birmingham, AlabamaAges 18–70 - NCT06537921Recruiting
Testing minocycline for depression with obesity
This trial tests whether adding the antibiotic minocycline to your current antidepressant helps people with both depression and obesity. It aims to see if reducing inflammation can improve mood.
LondonAges 18–65 - NCT06402955RecruitingPhase 2
Imaging depression in Parkinson's disease
This study uses brain imaging (PET scans) to understand depression in people with Parkinson's disease. It may also test a depression treatment called ketamine, but the main goal is to see how the brain changes with depression.
New Haven, ConnecticutAges 40–80 - NCT07252427Recruiting
Gut bacteria in IBD with or without depression
This study looks at how the bacteria in your gut (gut microbiome) may differ between people with IBD who also have depression and those who don't. It aims to help understand the link between gut health and mood.
Jinan, ShandongAges 18 years+
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Common questions
- Are there clinical trials for major depression disorder?
- Yes. Clin2 currently lists 504 recruiting major depression disorder studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a major depression disorder trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a major depression disorder trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.