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Scientists ask: is BPD really a 'Relationship use Disorder'?

NCT ID NCT07337889

Knowledge-focused Sponsor: University Hospital, Montpellier 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a new idea: that Borderline Personality Disorder (BPD) may be a form of addiction to close relationships, similar to substance use disorders. Researchers will give a special questionnaire to 194 people—those with BPD, those with bipolar disorder, and healthy volunteers—to see if relationship addiction is stronger in BPD. The goal is to better understand BPD and reduce stigma, not to test a treatment.

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 this study confirms the addiction model, it could lead to new treatment approaches for BPD that focus on relationship patterns, similar to addiction therapies.
What could go wrong
This is an early observational study, not a treatment trial. The questionnaire is experimental, and the findings may not change current care or apply to all people with BPD.

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 194 people

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

Started

Jun 2026

Expected to finish

Aug 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

18 to 45 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: * General : aged 18-45 * Specific : * Borderline personality disorder (BPD)assessed by SCID, without bipolar disorder * Bipolar disorder (assessed by SCID), without BPD (evaluated by SCID) * Healthy controls with no psychiatric disorders (screened by SCID). Exclusion Criteria: * Psychotic disorders (evaluated by SCID) * lack of informed consent * Not affiliated with social security * Under judicial or administrative confinement or involuntary hospitalization * Protected by law (e.g., under guardianship) * Pregnancy or breastfeeding * Inability to understand, speak, or write in French * Inability to understand the study's purpose or methodology * Excluded from another study during the exclusion period * Participants who have received over €6000 in annual indemnities * For Bipolar Participants (without BPD) : Current moderate or severe depressive episode (BDI score \> 18) or Current hypomanic/manic episode (YMRS \< 12)

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Conditions

The condition(s) this trial relates to.

bipolar disorder borderline personality disorder

As listed by the trial registrant

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

Bipolar disorder (BD) Borderline personality disorder Borderline personality disorder (BPD)

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

    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

  • CHU Montpellier

    RECRUITING

    Montpellier, 34000, France

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