Clinical trials · Washington
Major Depressive Disorder clinical trials in Washington
We’re tracking 24 recruiting major depressive disorder studies with a site in Washington — including Phase 2, Phase 3 and Phase 4 studies, each written for real people, not researchers.
Recruiting studies in Washington
- NCT07775300RecruitingPhase 3
Study of an injectable drug for major depressive disorder
This study tests an investigational drug called brenipatide for major depressive disorder. It is given as a self-injection and is being compared to a placebo to see if it helps improve depression symptoms in people who are already on standard treatment.
Bellevue, WashingtonAges 18–75 - NCT06005194Recruiting
Exercise therapy via telehealth for depression after brain injury
This study tests whether an exercise program delivered through video calls can help treat major depression in people who have had a traumatic brain injury. If you are at least one year past your injury and have symptoms of depression, you may be able to join.
Seattle, WashingtonAges 18–64 - NCT07610473RecruitingPhase 2
Testing DT-101 as an add-on for depression
This trial tests if a new medication, DT-101, can help when added to your current depression treatment. It's for adults with recurrent depression who may need extra support.
Bellevue, WashingtonAges 18–75 - NCT07592689RecruitingPhase 3
DT120 Treatment for Major Depression
This study tests whether a new medication called DT120 can help people with moderate-to-severe depression feel better. You'd take the medication for several weeks while doctors track your mood and symptoms.
Seattle, WashingtonAges 18–74 - NCT07573176RecruitingPhase 3
Seltorexant for Depression in Adults and Older Adults
This study tests a new medication called seltorexant as a standalone treatment for major depression. The trial is for adults and older adults who have depression that hasn't improved with other antidepressants or who haven't tried them yet.
Bellevue, WashingtonAges 18–74 - NCT06223880RecruitingPhase 4
AXS-05 vs Bupropion to prevent depression relapse
This study tests whether a new drug called AXS-05 can prevent depression from coming back, compared to an older drug called bupropion. If you have major depression and are at risk of relapse, this trial may help you stay well.
Everett, WashingtonAges 18–65 - NCT07412756RecruitingPhase 3
Brenipatide for major depressive disorder
This trial tests a new medication, Brenipatide, to see if it helps people with major depression who are already on a stable treatment. You would need to inject the study drug yourself and complete questionnaires.
Bellevue, WashingtonAges 18–75 - NCT07300969RecruitingPhase 2
Testing DT-101 for adults with depression
This trial tests a new medicine called DT-101 to see if it helps people with depression. It is for adults who have had more than one depressive episode in their life.
Bellevue, WashingtonAges 18–75 - NCT07276997RecruitingPhase 2
Study of Icalcaprant for major depressive disorder
This trial tests an oral medication called icalcaprant for adults with major depressive disorder (MDD). It aims to see if the drug can reduce depression symptoms and what side effects may occur.
Bellevue, WashingtonAges 18–65 - 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.
Everett, WashingtonAges 18–65 - 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.
Everett, WashingtonAges 18 years+ - NCT06830044RecruitingPhase 3
Adding an experimental drug for major depression
This trial tests if adding a new medicine called milsaperidone can help people with major depression who haven't gotten enough relief from their current antidepressant. It aims to see if the combination works better than the antidepressant alone.
Bellevue, WashingtonAges 18–65 - NCT06793397RecruitingPhase 3
Study of an experimental psychedelic-like drug for depression (CYB003)
This study tests an investigational medication (CYB003) for people with major depression whose current antidepressant isn't working well enough. It looks at whether this treatment can help improve depression symptoms.
Everett, WashingtonAges 18–85 - 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.
Everett, WashingtonAges 18 years+ - NCT06633016RecruitingPhase 2
ABX-002 for major depression (add-on treatment)
This trial tests a new medication called ABX-002 as an add-on to your current antidepressant. It's for people with moderate to severe depression who haven't gotten enough help from their current antidepressant alone.
Bellevue, WashingtonAges 18–65 - NCT06559306RecruitingPhase 3
Seltorexant for depression with insomnia symptoms
This trial tests if adding seltorexant to your current antidepressant can improve depression and sleep problems. It is for people with major depressive disorder who still have symptoms, especially insomnia, despite trying at least one antidepressant.
Everett, WashingtonAges 18–74 - 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.
Bellevue, WashingtonAges 18–64 - NCT06093906Recruiting
Positive processes and transition to health (PATH) study
This study tests a new therapy that may help people recover after a stressful life event. Over about 6 weeks, you'll work with a coach to retrain your brain's patterns and feel more in control again, as well as reconnect with positive activities.
Seattle, WashingtonAges 18–65 - NCT06002100Enrolling by invitation
Predicting depression treatment response with brain imaging
This study uses a special headband (TD-fNIRS) that measures brain activity to see if it can predict how well different depression treatments work. You would be starting a new treatment for depression (like ketamine, SPRAVATO, TMS, or antidepressants) and wear the headband before and during treatment.
Bellevue, WashingtonAges 18–75 - NCT05850689RecruitingPhase 3
Lumateperone add-on for major depression that didn’t improve
This study tests whether adding lumateperone to an antidepressant helps adults with major depressive disorder (MDD) who haven’t improved enough after trying at least two different antidepressants. It may help reduce depressive symptoms more than antidepressants alone.
Bellevue, WashingtonAges 18–65 - 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.
Bellevue, WashingtonAges 18–70 - NCT06725277Recruiting
Observing ketamine and Spravato for depression
This study follows people who are already taking or about to start IV ketamine or Spravato® for hard-to-treat depression. Researchers want to learn more about how these treatments work in real life.
Seattle, WashingtonAges Any age - NCT07226232RecruitingPhase 3
Psilocybin for veterans with treatment-resistant depression
This study tests whether psilocybin (a psychedelic substance) can help veterans with depression that hasn't improved with standard treatments.
Seattle, WashingtonAges 18–75 - NCT07716098RecruitingPhase 3
Esketamine nasal spray for treatment-resistant depression
This study tests esketamine nasal spray versus a placebo in adults with depression that has not improved after trying at least two other antidepressants. It aims to see if the spray can help when standard pills have not worked.
Bellevue, WashingtonAges 18 years+
Major Depressive Disorder trials by city in Washington
Where these studies are running in Washington
Institutions with a site for the recruiting major depressive disorder studies listed above.
- Northwest Clinical Research Center · 6 studies
- Seattle Neuropsychiatric Treatment Center · 3 studies
- Core Clinical Research · 2 studies
- Draig Clinical Site · 2 studies
- Neurocrine Clinical Site · 2 studies
- Autobahn Site #143
- Clinical Research Site
- Core Clinical Research /ID# 277518
What taking part in a major depressive disorder study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Major Depressive Disorder trials in other states
Common questions
- Are there major depressive disorder clinical trials in Washington?
- Yes. We're currently tracking 24 recruiting major depressive disorder studies with a site in Washington, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a major depressive disorder study in Washington?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in Washington to take part?
- Not necessarily. These studies have a site in Washington, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a major depressive disorder trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New major depressive disorder studies open in Washington regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
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.