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Brain training study for cocaine use disorder falls through

NCT ID NCT05910749

Knowledge-focused Sponsor: University of Puerto Rico 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
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 Results may not be published yet.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 This study
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This status has not been confirmed recently, so it may be out of date.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 aimed to see if a brain training method called ZQLN could improve brain activity and thinking skills in people with cocaine use disorder. It planned to enroll adults aged 21 to 51 who had completed detox. However, the study was withdrawn before any participants were enrolled, so no results are available.

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.

Started

Apr 2025

Expected to finish

May 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

21 to 51 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 * Age limit: 21 to 51 * Cocaine as a primary drug of selection * Be stable (such as not having reading or movement problems preventing them from using a computer keyboard or iPad). * Have completed the first stage of treatment in the program (this first phase consists of the stabilization and detoxification period of the program participants) Exclusion criteria * History of brain injury. * Previous experience with neurofeedback training. * Being unavailable to complete assessments.

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Conditions

The condition(s) this trial relates to.

cocaine dependence substance-related disorder

As listed by the trial registrant

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

Substance use disorders

Contacts and locations

Locations

  • Administración de Servicios de Salud Mental y Contra la Adicción. Centro Residencial de Mujeres y Varones

    San Juan, PR, 00935, Puerto Rico

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