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Gene test could predict antidepressant success

NCT ID NCT00308893

Knowledge-focused Sponsor: University Hospital, Tours 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at whether a specific gene (BDNF) influences how well people with major depression respond to antidepressants. Researchers compared the gene variations in 188 patients who either improved or did not improve after 3 to 6 weeks of treatment. The goal is to better understand why some people don't respond to standard antidepressants and potentially guide more personalized treatment in the future.

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.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

188 people

The number who actually took part.

Start date

Jul 2006

Finished

Jun 2012

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.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Patient suffering a severe depressive episode (according to DSM-IV), evolving since at least 2 weeks before entering the study * Age superior to 18 years * Caucasian type * In absence of any medicinal treatment that could enhance depression: methyldopa, beta-blockers, reserpine, * In absence of hypothyroidia or anaemia * Without comorbidity that could affect therapy response : e.g. food disorder, substance abuse or dependence syndrome Exclusion Criteria: \- Will be excluded from the study the patients for which a modification of the depression diagnosis (according to the DSM-IV criteria) takes place during the period of study

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Conditions

The condition(s) this trial relates to.

Depression depressive disorder major depressive disorder

As listed by the trial registrant

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

Depression

Contacts and locations

Locations

  • CPU CHRU de Tours

    Tours, 37044, France

More trials for these conditions

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