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10-Year depression study aims to unlock personalized treatment clues

NCT ID NCT02919280

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 16, 2026 · Updated 2 times

Summary

This study follows 2,500 people aged 10 and older with depression or bipolar depression over 10 years. Researchers collect data on symptoms, brain scans, genetics, and lifestyle to find patterns that predict how someone will respond to different treatments. No experimental drugs or therapies are given—the goal is to better understand depression and improve future care.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could reveal biological and behavioral markers that help predict which depression treatments work best for each person.
What could go wrong
This is an observational study, not a treatment trial. It may take years to yield actionable results, and findings may not apply to all forms of depression.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 2,500 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jun 2016

Expected to finish

Sep 2036

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The following group is being targeted for this observational study: 1. Depressed patients 2. Lifetime or Current Diagnosis of a Mood Disorder 3. Bipolar Disorder 4. Health Controls with NO Psychiatric Diagnosis ( For Comparison Purposes)

Ages

10 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Criteria for Inclusion of participants: A potential participant will be eligible for participation in this study if the following criteria are met: 1. Male and female adult or youth aged 10 and older of any race or ethnicity. 2. Ability to speak, read, and understand English. However, the parent(s) or legal guardians of minors may either speak English or Spanish as the consenting process can be conducted bilingually. 3. A lifetime or a current diagnosis of a mood disorder based upon a semi-structured diagnostic interview. 4. Adults age 18 and older must be able to provide written informed consent; for youth younger than age 18, a parent or legal guardian must provide written informed consent, and the child or teen must provide written informed assent. Eligibility for Healthy Controls For comparison purposes, potential health control participants who do NOT have a psychiatric diagnosis will be enrolled as part of the healthy control arm of this study. 1. Male and female adult or youth aged 10 and older of any race or ethnicity. 2. Ability to speak, read, and understand English. However, the parent(s) or legal guardians of minors may either speak English or Spanish as the consenting process can be conducted bilingually. 3. Adults age 18 and older must be able to provide written informed consent; for youth younger than age 18, a parent or legal guardian must provide written informed consent, and the child or teen must provide written informed assent. Criteria for Exclusion of Participants A potential participant will NOT be eligible for participation in this study if any of the following criteria are met: 1. History of schizophrenia, schizoaffective disorders or chronic psychotic disorders based upon a semi-structured diagnostic interview. 2. Diagnosis of human immunodeficiency virus (HIV) or hepatitis B or C (human immunodeficiency virus (HIV) testing is not required for this study). 3. Unable to provide a stable home address and contact information. 4. Has any condition for which, in the opinion of the investigator or designee, study participation would not be in their best interest (including but not limited to cognitive impairment, unstable general medical condition, intoxication, active psychosis) or that could prevent, limit, or confound the protocol-specified assessments. 5. Requires immediate hospitalization for psychiatric disorder or suicidal risk as assessed by a licensed study clinician. Eligibility for Healthy Controls A potential Healthy Control participant will NOT be eligible for participation in this study if any of the following criteria are met: 1. A lifetime or a current history of a mood disorder based upon a semi-structured diagnostic interview. 2. Meets any exclusion criteria as part of the main D2K study interview.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • University of Texas Southwestern Medical Center

    Dallas, Texas, 75390, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.