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Teen brain scans may predict cannabis treatment success

NCT ID NCT07340554

Knowledge-focused Sponsor: Indiana University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at whether brain activity related to learning can predict how well teens respond to a program aimed at reducing cannabis use. Teens aged 14-17 get a brain scan, then attend 10 weekly virtual sessions where they report use and take drug tests. They can earn prizes for staying cannabis-free.

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

Jun 2026

Expected to finish

May 2030

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

14 to 17 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: * 14-17 year old youth * Guardian 18 years or older * Youth is MRI-eligible: No metal implants, prosthetics, orthodontic devices, transdermal medication patches, piercings and/or hair or eyelash extensions that cannot easily be removed, metallic ink tattoos on the neck or face, or claustrophobia, and are not pregnant * Youth must endorse having used cannabis at least once per week over the past month OR youth must have been diagnosed with cannabis use disorder within the past three months Exclusion Criteria: * Youth has a history of Fetal Alcohol Spectrum Disorder, intellectual disorders, pervasive development disorder or autism spectrum disorder, psychotic disorders, history of neurological problems (epilepsy, traumatic brain injury, brain tumor, cerebrovascular disease) by parent/guardian report * Youth or caretaker who is monolingual non-English speaker * Youth who is currently experiencing active psychosis symptoms or suicidal/homicidal ideation or who has been hospitalized within the past 6 months for psychosis or suicidality/homicidality * Youth who is currently undergoing contingency management treatment for cannabis use disorder

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Conditions

The condition(s) this trial relates to.

Behavior, Addictive cannabis dependence Marijuana Smoking Marijuana Use substance abuse substance dependence substance withdrawal syndrome substance-related disorder

As listed by the trial registrant

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

Addiction Addiction, substance Cannabis abuse Cannabis abuse, episodic use Cannabis abuse, in remission Cannabis dependence Cannabis intoxication Cannabis smoking Cannabis use Cannabis use disorder Cannabis withdrawal Cannabis-related disorder Marijuana Marijuana abuse Marijuana dependence Marijuana smoking Marijuana use Marijuana use disorder Marijuana user Marijuana-related disorder Substance abuse Substance abuse drug chronic Substance dependence Substance related problem Substance use Substance use disorders

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

  • Indiana University School of Medicine

    RECRUITING

    Indianapolis, Indiana, 46202, United States

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