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New study aims to uncover how ADHD and addiction interact

NCT ID NCT06232226

Knowledge-focused Sponsor: Nantes University Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 is collecting information from 80 adults who have both ADHD and an addiction. Researchers will track their symptoms and daily functioning over 12 months to better understand how these conditions affect each other. The goal is to gather data that could improve future treatments, not to test a new therapy.

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 80 people

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

Started

Apr 2024

Expected to finish

Dec 2026

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 99 years

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 : * Patients aged over 18 years * For whom a diagnosis of ADHD has been confirmed less than 12 weeks ago * For whom the diagnosis of one or more addictive disorder(s) (substance use disorder or behavioral addiction) has been confirmed * Meeting the indication for treatment with MPH according to European recommendations (Kooij et al., 2019) * For patients who can actually benefit from MPH: who have not yet started taking MPH * Social security affiliates Exclusion Criteria : * Presenting disorders of higher cognitive functions (at the discretion of the referring clinician or the investigator making the inclusion), making data collection impossible * Presenting difficulties in reading or writing the French language making data collection impossible * Unable to commit to being available for the 2 visits planned as part of the cohort * Under guardianship or legal protection * Patients who have used psychoactive substances within 12 hours prior to their visit

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Conditions

The condition(s) this trial relates to.

attention deficit hyperactivity disorder, inattentive type attention deficit-hyperactivity disorder psychiatric disorder Spasm substance-related disorder

As listed by the trial registrant

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

Attention deficit hyperactivity disorder Behavior disorders Behavior hyperactive

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

  • CHRU de Brest

    RECRUITING

    Brest, 29000, France

  • CHRU de Tours

    RECRUITING

    Tours, 37000, France

  • Nantes University Hospital

    RECRUITING

    Nantes, Loire-Atlantique, 44093, France

More trials for these conditions

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