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A smartphone app may help foster youth avoid drugs and alcohol

NCT ID NCT06875323

Prevention Sponsor: University of California, San Francisco 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
Registered, but not yet taking participants.
By invitation only This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 29, 2026 · Last updated Jul 30, 2026 · Updated 1 time

Summary

This trial tests whether a digital app called FostrSpace can reduce substance use among youth aged 13 to 20 who are in foster care. The app is delivered through training sessions for CASA volunteers, who then support the youth in using it. Researchers will measure changes in drug, cigarette, and alcohol use over time. The goal is to see if a simple, scalable digital tool can make a difference in this high-risk group.

What this could mean

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

Active substance
a digital health application (app) called FostrSpace, delivered via ECHO training sessions for CASA volunteers
What this could lead to
If effective, this digital tool could offer a scalable, low-cost way to prevent substance use among a vulnerable population of foster youth.
What could go wrong
This is a relatively small trial testing a behavioral intervention, so results may not generalize widely. The app's success depends on consistent use and engagement by youth and volunteers.

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 400 people

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

Started

Mar 2024

Expected to finish

Mar 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.

Ages

13 to 20 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: * Adolescents and young adults will be eligible if they are age 13-20, are proficient in English, have an assigned CASA worker, and have a device with web access. * CASAs (ages 18 and over) will be eligible if they are assigned to a youth between the ages of 13- 20. Exclusion Criteria: * Youth: Exclusion criteria include being non-English speaking, being within 3 months of ending with CASA services, cognitive impairment that precludes ability to provide informed consent. * CASA: Exclusion criteria include being non-English speaking and working with a youth who is within 3 months of ending with CASA services.

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Conditions

The condition(s) this trial relates to.

substance-related disorder substance abuse prevention target

As listed by the trial registrant

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

Substance use

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

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    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

  • UCSF Zuckerberg San Francisco General Hospital

    San Francisco, California, 94131, United States

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