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Scientists probe why some opioid users struggle more: new study looks at mind, body, and society

NCT ID NCT06021548

Knowledge-focused Sponsor: University Hospital, Strasbourg, France 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 26, 2026 · Updated 3 times

Summary

This study aims to understand why some people with opioid use disorder have more severe addiction than others. Researchers will collect blood, saliva, and hair samples from 350 participants and combine that with detailed interviews about their social and mental health. The goal is to find biological markers that, together with life experiences, could better predict how the disease progresses.

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 could lead to better ways to measure opioid addiction severity and predict its course, helping tailor treatments.
What could go wrong
This is an observational study, not testing a treatment. It may not directly improve patient outcomes, and results may not apply to all opioid users.

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 300 people

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

Started

Feb 2024

Expected to finish

May 2029

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

Participants will be recruited from Supervised Drug Consumption Facilities (SCMRs) and Addiction Care, Prevention and Support Centers (CSAPAs) located in Paris, Strasbourg and Lyon, France.

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: * Male, female, or transgender person, age \> 18 years * French speaking subject, able to understand the objectives and risks of the research * Informed signed consent form by the curator (subject under curatorship) / guardian (subject under guardianship), if applicable * Subject who has written "I consent" on the consent form * Subject using psychoactive substances and who attends a low-risk consumption room (SCMR), or a Center for Care, Accompaniment and Prevention in Addictology (CSAPA) * Subject who used one or more illegal opioid drugs or one or more medications (with or without a prescription) at least once in the last 3 months (heroin, buprenorphine, morphine sulfate, methadone, morphine derivatives, oxycontin, oxycodone, oxynorm, Subutex® (Sub), Temgesic®, Suboxone®, Orobupre®, Skenan®, Moscontin®, opium, pethidine, codeine, dinacode, neocodion, codeine efferalgan, Lamaline®, tramadol, durogesic patches, fentanyl...) Exclusion Criteria: * Inability to give the subject informed information (subject with difficulties in understanding) * Subject in an emergency or life-threatening situation * Subject under court protection (upon subject's declaration) * Subject participating in an investigational drug study (upon subject's declaration)

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Conditions

The condition(s) this trial relates to.

opiate dependence

As listed by the trial registrant

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

Opioid use disorder

How to take part

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

  1. The places running it

    3 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

  • Centre d'étude des mouvements sociaux (CEMS) UMR8044/INSERM U1276 - École des Hautes Etudes en Sciences Sociales (EHESS)

    RECRUITING

    Paris, 75006, France

  • Service Universitaire d'Addictologie, Hospices Civils de Lyon

    RECRUITING

    Bron, 69678, France

  • Service d'Addictologie, Hôpitaux Universitaires de Strasbourg

    RECRUITING

    Strasbourg, 67091, France

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