Clinical trial Recruiting at 3 sites Phase 3 Interventional Ages 5 to 17

KarXT + KarX-EC for irritability in kids and teens with autism

Official title: A Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled Study to Assess the Efficacy, Safety, and Tolerability of KarXT + KarX-EC in Children and Adolescents (5 to 17 Years of Age) With Irritability Associated With Autism Spectrum Disorder

Run by Bristol-Myers Squibb · NCT07285798 · Data updated 2026-11-12

This study tests whether KarXT plus KarX-EC can reduce irritability in children and adolescents with autism.

Quick facts

PhasePhase 3
Study typeInterventional
Ages5 Years to 17 Years
SexAll
Enrollment176 (estimated)
SponsorBristol-Myers Squibb
Industry-sponsored
Locations67 sites (Phoenix, Arizona and 66 other locations)
StatusRecruiting
StartedOctober 6, 2026
Main results expectedAugust 6, 2029
Study endsAugust 6, 2029
Registry record updatedNovember 10, 2026
Trial IDNCT07285798 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Children and adolescents with a confirmed ASD diagnosis who show irritability and meet the specified ABC-I and CGIS thresholds at screening/baseline.

Probably not a fit

Some eligible participants may not experience a noticeable reduction in irritability or may experience intolerable side effects.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This Phase 3 interventional trial evaluates the combination of KarXT and KarX-EC, and a matching placebo, for treating irritability associated with autism spectrum disorder in participants aged pediatric to adolescent. Eligible participants must have an ASD diagnosis with irritability and meet specific behavioral scale thresholds. The study compares the combination treatment to placebo to determine its effect on irritability while monitoring safety in a real-world clinical setting.

Why it matters

Potential benefit: If successful, participants could experience reduced irritability and improved daily functioning.

How similar studies have gone: Previous studies in related neuropsychiatric domains have shown signals of efficacy with similar multi-drug approaches, but this exact combination in ASD irritability is novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria

* Participants must have a confirmed diagnosis of ASD, as defined by the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, Text Revision (DSM-5-TR) criteria, confirmed by the K-SADS-PL and must be experiencing symptoms of irritability.
* Participants must have an ABC-I ≥18 (Irritability subscale of the ABC) and CGIS specific to irritability ≥4, at screening and baseline (Day 1).

Exclusion Criteria

* Participants must not have a current primary DSM-5 diagnosis of bipolar disorder, including bipolar II disorder, schizophrenia, schizoaffective disorder, major depressive episode as determined by clinical instrument, or post-traumatic stress disorder (PTSD).
* Exception Include: Participants with comorbid ADHD, provided that attention deficit/hyperactivity disorder (ADHD) is not the primary disorder, the participant is adequately treated and based on the investigator judgment the disorder is clinically stable.
* Participants must not have history/presence of clinically significant disease or disorder that would jeopardize participant safety or validity of study results.
* Participants must not have a risk for suicidal behavior, and any clinically significant abnormal laboratory test.
* Other protocol-defined Inclusion/Exclusion criteria may apply.

Where it's running

  • Cortica - Glendale
    Glendale, California, United States
    Recruiting
  • Cortica - Marin
    San Rafael, California, United States
    Recruiting
  • EmVenio Research - Chicago
    Chicago, Illinois, United States
    Recruiting
  • Local Institution - 0062
    Phoenix, Arizona, United States
    Not yet recruiting
  • Local Institution - 0117
    Los Angeles, California, United States
    Not yet recruiting
  • Local Institution - 0126
    Orange, California, United States
    Not yet recruiting
Show 44 more locations
  • Local Institution - 0132
    San Diego, California, United States
    Not yet recruiting
  • Local Institution - 0115
    San Juan Capistrano, California, United States
    Not yet recruiting
  • Local Institution - 0130
    New Haven, Connecticut, United States
    Not yet recruiting
  • Local Institution - 0048
    Gainesville, Florida, United States
    Not yet recruiting
  • Local Institution - 0080
    Orlando, Florida, United States
    Not yet recruiting
  • Local Institution - 0072
    Decatur, Georgia, United States
    Not yet recruiting
  • Local Institution - 0026
    Chicago, Illinois, United States
    Withdrawn
  • Local Institution - 0051
    Lexington, Massachusetts, United States
    Not yet recruiting
  • Local Institution - 0140
    Bloomfield Hills, Michigan, United States
    Not yet recruiting
  • Local Institution - 0016
    Columbia, Missouri, United States
    Not yet recruiting
  • Local Institution - 0036
    Saint Charles, Missouri, United States
    Not yet recruiting
  • Local Institution - 0046
    Lincoln, Nebraska, United States
    Not yet recruiting
  • Local Institution - 0114
    Neptune City, New Jersey, United States
    Not yet recruiting
  • Local Institution - 0038
    Staten Island, New York, United States
    Not yet recruiting
  • Local Institution - 0052
    Cincinnati, Ohio, United States
    Not yet recruiting
  • Local Institution - 0003
    Pittsburgh, Pennsylvania, United States
    Not yet recruiting
  • Local Institution - 0125
    Spring, Texas, United States
    Not yet recruiting
  • Local Institution - 0009
    Orem, Utah, United States
    Not yet recruiting
  • Local Institution - 0019
    Everett, Washington, United States
    Not yet recruiting
  • Local Institution - 0088
    Bordeaux, France
    Withdrawn
  • Local Institution - 0102
    Bron, France
    Not yet recruiting
  • Local Institution - 0089
    Paris, France
    Not yet recruiting
  • Local Institution - 0103
    Gdansk, Germany
    Not yet recruiting
  • Local Institution - 0111
    Budapest, Hungary
    Withdrawn
  • Local Institution - 0127
    Budapest, Hungary
    Not yet recruiting
  • Local Institution - 0110
    Szeged, Hungary
    Not yet recruiting
  • Local Institution - 0096
    Kozhikode, Kerala, India
    Not yet recruiting
  • Local Institution - 0136
    Nashik, Maharashtra, India
    Not yet recruiting
  • Local Institution - 0139
    Pune, Maharashtra, India
    Not yet recruiting
  • Local Institution - 0101
    Sakri, Maharashtra, India
    Not yet recruiting
  • Local Institution - 0138
    Kanpur, Uttar Pradesh, India
    Not yet recruiting
  • Local Institution - 0099
    Nagpur, India
    Not yet recruiting
  • Local Institution - 0137
    New Delhi, India
    Not yet recruiting
  • Local Institution - 0094
    Miyakonojō, Miyazaki, Japan
    Not yet recruiting
  • Local Institution - 0128
    Kashihara, Nara, Japan
    Not yet recruiting
  • Local Institution - 0090
    Hirakata, Osaka, Japan
    Not yet recruiting
  • Local Institution - 0095
    Yoshinogari-cho, Kanzaki-gun, Saga-ken, Japan
    Not yet recruiting
  • Local Institution - 0091
    Ōta-ku, Tokyo, Japan
    Not yet recruiting
  • Local Institution - 0093
    Yokohama, Kanagawa, Japan
    Not yet recruiting
  • Local Institution - 0108
    Poznan, Greater Poland Voivodeship, Poland
    Not yet recruiting
  • Local Institution - 0105
    Wroclaw, Lower Silesian Voivodeship, Poland
    Withdrawn
  • Local Institution - 0107
    Warsaw, Masovian Voivodeship, Poland
    Withdrawn
  • Local Institution - 0106
    Gdansk, Pomeranian Voivodeship, Poland
    Not yet recruiting
  • Local Institution - 0113
    Szczecin, West Pomeranian Voivodeship, Poland
    Withdrawn

+17 more sites. See ClinicalTrials.gov for the full list.

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.