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Could a virus trigger mental illness? new study investigates

NCT ID NCT02878408

Knowledge-focused Sponsor: Pr. Marion Leboyer Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study is collecting blood samples and questionnaires from 1,100 people with bipolar disorder or schizophrenia. Researchers are looking for links between genetics, inflammation, and a dormant virus called HERV-W. The goal is to find new biomarkers and pave the way for future treatments.

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 research could identify new biomarkers and point toward treatments that target the HERV-W virus, potentially slowing or stopping psychosis progression.
What could go wrong
This is an observational study focused on understanding disease mechanisms, not testing a treatment. Any potential therapies are still in early preclinical stages and may not work in humans.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 1,100 people

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

Started

Nov 2014

Expected to finish

Nov 2028

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.

Ages

16 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.

Inclusion Criteria: * Bipolar disorder or Schizophrenia (according to Diagnostic and Statistical Manual of Mental Disorders IV) Exclusion Criteria: * pregnant women * Vaccination within 4 precedent weeks * Severe neurologic illness * Immunosuppressing or immuno-modulating treatment. * Infectious disease within 4 precedent weeks (including HIV 1 et 2, Hepatite B, C) * Refuse to have HIV and hepatite B et C tests or to be informed of their results

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Conditions

The condition(s) this trial relates to.

bipolar disorder schizophrenia

As listed by the trial registrant

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

Bipolar disorder Schizophrenia

How to take part

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

  1. The places running it

    6 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    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

  • Clinical Investigations Center of Mondor Hospital

    RECRUITING

    Créteil, 94000, France

  • EPS Maison Blanche

    RECRUITING

    Paris, 75020, France

  • Psychiatry Department of Mondor Hospital

    RECRUITING

    Créteil, France, 94000, France

  • Psychiatry Department of Perrens Hospital

    NOT_YET_RECRUITING

    Bordeaux, France

  • Psychiatry Department of R. Dubos Hospital

    RECRUITING

    Pontoise, France

  • Psychiatry Department of Widal Hospital

    RECRUITING

    Paris, 75010, France

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