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Massive study aims to unlock secrets of depression, bipolar, and psychosis

NCT ID NCT00762866

Knowledge-focused Sponsor: Vanderbilt University Source: ClinicalTrials.gov ↗

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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study is collecting DNA, brain scans, and other biological samples from 2,000 people with major depression, bipolar disorder, or psychotic disorders, as well as healthy volunteers. The goal is to better understand the physical and genetic factors behind these conditions, which could help tailor treatments to individual needs. Participants will undergo a detailed clinical assessment, two blood draws, an MRI scan, and provide urine and saliva samples over two visits.

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 2,000 people

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

Started

Sep 2008

Expected to finish

Dec 2027

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

Outpatient Mental Health Clinic, Inpatient Psychiatric Hospital, Research Volunteers

Ages

16 to 65 years

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.

Inclusion Criteria: 1. Between the ages of 16 and 65 2. Able and willing to provide informed consent 3. Able to read and speak English sufficiently to provide consent and answer questions 4. Diagnosis of one of the following: * Unipolar Major Depressive Disorder of any subtype * Bipolar I, Bipolar II Disorder, or Bipolar Disorder NOS * Axis I Psychotic Disorder, which can include the diagnoses of Schizophrenia, Schizoaffective Disorder, Major Depression or Mania with Psychotic Features, Schizophreniform Disorder, Brief Psychotic Episode, or Psychotic Disorder NOS * Normal volunteer controls, individuals with no personal history of any Axis I disorder. Exclusion Criteria: 1. Reported pregnancy or breastfeeding 2. Dementia or delirium 3. Any medical condition that would interfere with participation in the study. This would include, but not be limited to: * uncontrolled diabetes, hypothyroidism, Cushing's disease, or other significant endocrine condition (treated endocrine condition is allowed) * demyelinating disease * HIV infection * active hepatitis * CNS infection * clinically significant and unstable cardiovascular disease * any cancer involving the CNS (including metastatic disease) 4. Exclusion criteria for normal control subjects include any history of mental illness or psychotropic drug abuse. 5. Participants will be excluded from the imaging portion of the study if they have any condition deemed to interfere with PET or MRI scanning, such as but not restricted to extreme obesity, metal fragments in eyes, metal implants in the head, or cochlear implant. These participants may still take part in the portion of the study involving the clinical assessment and providing biological samples.

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Conditions

The condition(s) this trial relates to.

bipolar disorder Depression major depressive disorder psychotic disorder Psychotic Disorders schizoaffective disorder schizophrenia

As listed by the trial registrant

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

Bipolar disorder Depressive disorder, major Psychotic disorders

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Vanderbilt University Medical Center

    Nashville, Tennessee, 37212, United States

More trials for these conditions

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