Clinical trials
Persistent Depressive Disorder clinical trials
Below are recruiting persistent depressive disorder clinical trials, each written for real people, not researchers. We’re tracking 35 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07065240RecruitingPhase 2
Study of SPT-300 for major depression with or without anxiety
This trial tests an experimental oral medication, SPT-300, for people with major depressive disorder, even if they also have mild anxiety. The goal is to see if it helps improve mood safely.
Chino, CaliforniaAges 18–65 - NCT07284667RecruitingPhase 2
A new medicine for depression that hasn't improved with other treatments
This trial tests a new medicine called ACP-211 in adults with major depression who have not gotten enough relief from at least two previous antidepressants. The goal is to see if it can help when other treatments have not worked well.
Birmingham, AlabamaAges 18–65 - NCT04996433Recruiting
Compare two talk therapy programs for treatment-resistant depression
This study compares two psychotherapy programs to help people who have ongoing, difficult-to-treat depression while in inpatient care. If you qualify, you’ll receive one of the therapy programs and be followed to see which approach helps depression symptoms more.
Berlin, State of BerlinAges 18–75 - NCT06311136Recruiting
Mood support through a smartphone app
This trial tests a smartphone-based program designed to help people manage their emotions in the moment. It may be especially helpful if you currently have mild to moderate depression.
HeidelbergAges 18–65 - NCT06804525Recruiting
Adapting a mental health survey in Hong Kong
This study adapts a mental health survey for Hong Kong adults. It is open to adults aged 25 and older who live in randomly selected households and can speak Chinese or English.
Hong KongAges 25 years+ - NCT07028216Recruiting
Mindful Self-Compassion for Anxiety and Depression
This study tests whether a program called Mindful Self-Compassion (MSC) can help people with anxiety or depression who tend to be hard on themselves. You will be assigned to learn MSC either in a group class or online.
Washington D.C., District of ColumbiaAges 18–65 - NCT02752542RecruitingPhase 4
Personalized therapy and antidepressants for depression
This trial studies whether a personalized combination of talk therapy (CBT) and antidepressant medication works better for people with moderate to severe depression. It’s meant to match treatment choices to your situation and to see what helps most.
Halifax, Nova ScotiaAges 18 years+ - NCT07151846Enrolling by invitation
Using phone data to predict depression
This study uses your smartphone and a Fitbit to track mood patterns and see if they can predict depression. You may join as someone with a mood disorder, as a healthy volunteer, or as someone at higher risk for mood problems.
Seoul, Seongbuk-guAges 19–75 - NCT05435222Recruiting
Male-only therapy program for major depression
This study tests a counseling/psychotherapy program designed specifically for men with major depression. If you qualify, you may be offered this structured therapy and followed to see whether it helps depressive symptoms.
Zurich, Canton of ZurichAges 25–50 - NCT06547489RecruitingPhase 2
Testing zelquistinel for major depression
This study tests whether zelquistinel, an investigational drug, can reduce symptoms of major depressive disorder (a type of clinical depression). It is for people who are currently experiencing a moderate to severe depressive episode and are not taking other antidepressants.
Birmingham, AlabamaAges 18–64 - NCT07204314RecruitingPhase 3
Study of vortioxetine for teens with depression in Japan
This trial tests whether vortioxetine helps reduce symptoms of major depression in Japanese teenagers aged 12-17. It compares the study drug to a placebo to see if it is safe and effective.
Nagoya, Aichi-kenAges 12–17 - NCT06911112RecruitingPhase 3
A new pill for depression when current treatment isn't working well enough
This trial tests an investigational medication (NBI-1065845) added to your current antidepressant to see if it can improve depressive symptoms. It is for people with moderate to severe depression who have not fully responded to their current antidepressant.
Huntsville, AlabamaAges 18 years+ - NCT06963021RecruitingPhase 3
Study of NBI-1065845 for depression that hasn't fully responded to treatment
This trial tests an investigational drug called NBI-1065845 added to your current antidepressant. It is for people with moderate to severe depression or persistent depressive disorder who have not improved enough with oral antidepressants alone.
Chino, CaliforniaAges 18 years+ - NCT06966401RecruitingPhase 3
Long-term safety study of a new depression treatment
This study tests a new oral medication (NBI-1065845) added to your current antidepressant to see if it's safe and tolerable over a long period for people with depression that hasn't fully responded to treatment.
Huntsville, AlabamaAges 18 years+ - NCT07196501RecruitingPhase 3
Study of a new add-on treatment for depression maintenance
This trial tests a new medication (NBI-1065845) added to your current antidepressant to see if it helps maintain improvement in depression. It is for people whose depression hasn't fully responded to their current oral antidepressant.
Oceanside, CaliforniaAges 18 years+ - NCT06786624RecruitingPhase 3
Testing a new drug for depression that hasn't fully responded to treatment
This trial tests a new medication called NBI-1065845 added to your current antidepressant for people with depression that hasn't fully responded to treatment. It aims to see if this combination can better improve your symptoms.
Little Rock, ArkansasAges 18 years+ - NCT07363980Enrolling by invitation
Heart CT Study for Rheumatoid Arthritis Patients
This study uses a special heart CT scan to look for early signs of heart disease in people with rheumatoid arthritis. It may help find problems before symptoms start.
AarhusAges 50–75 - NCT06773949Recruiting
Exercise before rTMS for hard-to-treat depression
This trial tests if doing exercise before repetitive transcranial magnetic stimulation (rTMS) can improve depression symptoms in people who haven't gotten better with standard treatments.
Ottawa, OntarioAges 18–75 - NCT07696871RecruitingPhase 1/Phase 2
Cannabidiol oil for treatment-resistant depression
This trial tests if cannabidiol (CBD) oil can help people with major depression that has not improved with standard antidepressants. You will take CBD oil or a placebo while continuing your current antidepressant treatment to see if it improves your symptoms.
Tubarão, Santa CatarinaAges 18–69 - NCT06928480Recruiting
Unified Protocol for Emotional Health in Long COVID
This study tests a program to help people with Long COVID manage emotional difficulties like depression or anxiety. It combines different therapy approaches into one treatment, which you can receive online from home.
Zaragoza, ZaragozaAges 18 years+ - NCT03437928Recruiting
Deep brain stimulation for severe, treatment-resistant depression
This trial tests whether deep brain stimulation (DBS, a surgically placed device that sends signals to the brain) can reduce symptoms of long-lasting major depression that has not improved with many treatments. You may be more likely to qualify if your depression has been present for years, has been resistant to multiple medications and therapies, and if you meet specific safety and testing requirements.
Dallas, TexasAges 22–70 - NCT05813093Recruiting
Brain stimulation and brain scans for hard-to-treat depression
This trial tests an alternating combination of brain stimulation and brain imaging to see if it helps people with depression that hasn’t improved with usual treatments. The goal is to find a safer, more effective approach for people whose depression has been very difficult to treat.
Toronto, OntarioAges 20–65 - NCT07167849Recruiting
Digital help while waiting for therapy
This trial tests a brief digital program for people waiting for outpatient therapy. It aims to provide support during the wait and see if it helps improve mental health symptoms.
BernAges 18 years+ - NCT07217223Recruiting
Home-based brain stimulation for treatment-resistant depression
This study tests whether a gentle brain stimulation technique called tDCS can help people with depression that hasn't improved with medication. It can be done at home using a special headset and an internet connection.
San Diego, CaliforniaAges 18–85
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Common questions
- Are there clinical trials for persistent depressive disorder?
- Yes. Clin2 currently lists 35 recruiting persistent depressive 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 persistent depressive 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 persistent depressive 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.