Down syndrome hyperactivity drug trial stalls after just 3 kids enrolled

NCT ID NCT06042257

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested the drug guanfacine to see if it could reduce hyperactivity and impulsivity in children aged 6 to 12 with Down syndrome. The plan was to give the drug or a placebo for 8 weeks and measure behavior changes. However, the trial was stopped early after only 3 children joined, so we don't have enough data to know if it works.

What this could mean

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

Active substance

Guanfacine (immediate-release capsules)

What this could lead to

If it had worked, this could have pointed toward a medication to ease hyperactivity and impulsivity in children with Down syndrome.

What could go wrong

The trial was terminated early with only 3 participants, so no reliable conclusions can be drawn. Guanfacine may also cause side effects like drowsiness or low blood pressure.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

Down syndrome Impulsive Behavior Spasm

As listed by the trial registrant

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

Contacts and locations

Locations

  • Akron Children's Hospital

    Akron, Ohio, 44308, United States

  • Ann and Robert H. Lurie Hospital of Chicago

    Chicago, Illinois, 60611, United States

  • Atrium Health-Wake Forest School of Medicine

    Charlotte, North Carolina, 28204, United States

  • Boston Children's Hospital

    Boston, Massachusetts, 02115, United States

  • Cincinnati Children's Hospital

    Cincinnati, Ohio, 45229, United States

  • Duke University Hospital

    Durham, North Carolina, 27705, United States

  • Emory University

    Atlanta, Georgia, 30322, United States

  • Kennedy Krieger Institute

    Baltimore, Maryland, 21205, United States

  • Massachusetts General Hospital

    Lexington, Massachusetts, 02421, United States

  • Phoenix Childrens Hospital

    Phoenix, Arizona, 85016, United States

  • University of Iowa

    Iowa City, Iowa, 52242, United States

  • University of Washington

    Seattle, Washington, 98195, United States

  • University of Wisconsin Madison

    Madison, Wisconsin, 53792, United States

  • Virginia Center for Children

    Richmond, Virginia, 23220, United States