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Can a simple test track ADHD med effects in kids with intellectual disability?

NCT ID NCT05301361

Symptom relief Sponsor: University of California, Davis 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at whether a set of thinking and memory tests can detect changes caused by a stimulant medication in children aged 6 to 17 who have both intellectual disability and ADHD. About 68 participants will receive either the medication or a placebo, then switch after a break. The goal is to see if the tests are sensitive enough to measure the medication's effects on attention and behavior.

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

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 68 people

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

Started

Feb 2023

Expected to finish

Sep 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

6 to 24 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: * IQ below 80 * Mental age 3.0 or higher (Stanford Binet) * Diagnosis of Intellectual Disability * Diagnosis of ADHD * Ability to complete valid NIHTB-CB tests at screening/baseline Exclusion Criteria: * stimulant use within 2 weeks prior to randomization * history of a sensitivity reaction to stimulants * presence of significant comorbid psychiatric or medical disorder/illness deemed by the site physician as inappropriate for stimulant use (uncontrolled epilepsy, bipolar disorder, psychosis, severe OCD, hypertension, tachycardia hypertension, failure to thrive, psychosis for example) * a household resident with a current substance abuse disorder

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Conditions

The condition(s) this trial relates to.

attention deficit hyperactivity disorder, inattentive type attention deficit-hyperactivity disorder Down syndrome fragile X syndrome intellectual disability

As listed by the trial registrant

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

Attention deficit hyperactivity disorder Down syndrome Fragile X syndrome Intellectual disability

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

    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

  • Cincinnati Children's Hospital

    Cincinnati, Ohio, 45229, United States

  • Rush University

    Chicago, Illinois, 60612, United States

  • UC Davis MIND Institute

    Sacramento, California, 95817, United States

More trials for these conditions

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