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10 years later: how does psychotherapy for BPD hold up?

NCT ID NCT07509216

Knowledge-focused Sponsor: De Viersprong 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 checks in with people who received mentalization-based treatment (MBT) for borderline personality disorder more than 10 years ago. Researchers want to see how they are functioning now, whether symptoms have changed, and if the type of MBT they received matters. Participants will fill out questionnaires and some will do interviews. No new treatment is given.

What this could mean

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

Active substance
mentalization-based treatment (MBT) - a type of psychotherapy
What this could lead to
If successful, this study could reveal how well MBT works in the long run for BPD and which treatment intensity is more effective, helping guide future care.
What could go wrong
This is an observational follow-up, not a new treatment trial. Results depend on participants' memory and may not apply to everyone with BPD. There is no new intervention being tested.

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 113 people

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

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Jun 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

The study population consists of individuals who previously participated in the randomized controlled trial comparing MBT-DH with MBT-IOP for BPD in the Netherlands. Inclusion criteria were: a BPD diagnosis (SCID-II); age 18 years or older; adequate Dutch language skills; travel time to the MBT clinic of less than one hour. Exclusion criteria: autism spectrum disorder, chronic psychotic disorder or organic brain disorder that significantly interfered with mentalizing; intellectual impairment (IQ \< 80), or antisocial personality disorder with a history of severe physical violence. For this follow-up, all 113 individuals who did not decline future contact will be approached. No new age or diagnostic limits apply. This is a non-probability sample because it consists of the entire available cohort from the original RCT. Participants will initially be invited consecutively to the qualitative substudy; if response permits, purposive sampling will be used to ensure variation.

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: * Participation in the original randomized controlled trial of mentalization-based treatment (MBT-DH versus MBT-IOP) * Did not decline to be contacted for future research * Able to provide informed consent at the time of the long-term follow-up assessment (No separate exclusion criteria are specified, as exclusion follows directly from these inclusion criteria.)

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Conditions

The condition(s) this trial relates to.

borderline personality disorder Patient Acceptance of Health Care

As listed by the trial registrant

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

Borderline personality disorder

How to take part

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

  1. The places running it

    2 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

  • Arkin - NPI

    Amsterdam, 1093MB, Netherlands

  • De Viersprong

    Halsteren, 4660AA, Netherlands

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