Clinical trial Recruiting at 28 sites Phase 3 Interventional Ages 5 to 17

Treatment of irritability in children with Autism Spectrum Disorder using Lumateperone

Official title: A Randomized, Double-blind, Placebo-controlled, Multicenter Study to Assess the Efficacy and Safety of Lumateperone in the Treatment of Irritability Associated With Autism Spectrum Disorder in Pediatric Patients 5 to 17 Years of Age

Run by Intra-Cellular Therapies, Inc. · NCT06706674 · Data updated 2026-11-12

This study is testing if a medication called Lumateperone can help reduce irritability in children with Autism Spectrum Disorder aged 5 to 17.

More Irritability Associated With Autism Spectrum Disorder trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages5 Years to 17 Years
SexAll
Enrollment160 (estimated)
SponsorIntra-Cellular Therapies, Inc.
Industry-sponsored
Locations41 sites (Little Rock, Arkansas and 40 other locations)
StatusRecruiting
StartedDecember 6, 2024
Main results expectedJune 21, 2027
Study endsJune 21, 2027
Registry record updatedNovember 3, 2026
Trial IDNCT06706674 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are pediatric patients aged 13 to 17 years with a confirmed diagnosis of irritability associated with Autism Spectrum Disorder.

Probably not a fit

Patients outside the age range of 5 to 17 years or those without a diagnosis of irritability associated with Autism Spectrum Disorder may not benefit from this study.

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

What this trial studies

This multicenter, randomized, double-blind, placebo-controlled study aims to evaluate the efficacy of Lumateperone in treating irritability associated with Autism Spectrum Disorder (ASD) in pediatric patients aged 5 to 17 years. The study consists of a screening period to assess eligibility, a 6-week double-blind treatment phase where participants receive either a high dose, low dose of Lumateperone, or a placebo, and a safety follow-up period. The primary diagnosis of ASD will be confirmed using standardized assessment tools. The goal is to determine the safety and effectiveness of Lumateperone in reducing irritability symptoms in this population.

Why it matters

Potential benefit: If successful, this treatment could significantly reduce irritability symptoms in children with Autism Spectrum Disorder, improving their quality of life.

How similar studies have gone: Other studies have shown promise in using similar pharmacological approaches for managing irritability in ASD, indicating potential for success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. All patients must have a legally authorized representative LAR (eg, parent or legal guardian) who is willing and able to be responsible for the safety and well-being of the patient, provide information about the patient's condition, and accompany the patient to study visits.
2. Able to provide consent as follows:

   1. The patient's LAR must provide written, informed consent.
   2. When developmentally appropriate based on Investigator judgment, the patient should provide written assent.
3. Male or female patients 5 to 17 years of age. Currently, only patients aged 13 to 17 years will be eligible for enrollment.
4. Meet Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition Text Revision (DSM-5-TR) primary diagnosis of ASD as confirmed by the Kiddie Schedule for Affective Disorders and Schizophrenia for School-Age Children-Present and Lifetime Version (K-SADS-PL);
5. ABC-I subscale score of \>18 at Screening and Baseline;
6. CGI-S score \> 4 with respect to irritability associated with ASD at Screening and Baseline.

Exclusion Criteria:

1. Has a primary psychiatric diagnosis other than ASD. Exceptions include:

   1. Attention Deficit Hyperactivity Disorder (ADHD). If a patient is taking medication(s) for ADHD, they must be on a stable treatment regimen of these medication(s) for 30 days prior to screening and the treatment regimen is expected to remain stable throughout the study. This must be confirmed by the Investigator and noted in the source records.
   2. Mild and moderate intellectual disability based on Investigator judgment and DSM-5 criteria (severe and profound intellectual disability are excluded).
2. History or current diagnosis of Rett syndrome or Fragile X syndrome;
3. In the opinion of the Investigator, the patient has a significant risk for suicidal behavior during their participation in the study or

   1. At Screening, the patient scores "yes" on Suicidal Ideation Items 3, 4, or 5 of the Columbia-Suicide Severity Rating Scale (CSSRS) within 6 months prior to Screening or, at Baseline, the patient scores "yes" on Suicidal Ideation Items 3, 4, or 5 since the Screening Visit;
   2. At Screening, the patient has had 1 or more suicidal attempts within the 2 years prior to Screening; or
   3. The patient is considered to be an imminent danger to themselves or others.

Where it's running

  • Pillar Clinical Research, LLC
    Little Rock, Arkansas, United States
    Recruiting
  • University Of California - Davis
    Sacramento, California, United States
    Recruiting
  • California Neuroscience Research
    Sherman Oaks, California, United States
    Recruiting
  • Yale University School Of Medicine
    New Haven, Connecticut, United States
    Recruiting
  • United Research Institute
    Hialeah, Florida, United States
    Recruiting
  • Care Research Center Inc
    Miami, Florida, United States
    Recruiting
Show 35 more locations
  • Blue Medical Research
    Miami, Florida, United States
    Recruiting
  • AP Medical Research
    Miami, Florida, United States
    Recruiting
  • New Med Research Inc
    Miami Gardens, Florida, United States
    Recruiting
  • APG Research LLC
    Orlando, Florida, United States
    Recruiting
  • Clinical Research Center of Florida
    Pompano Beach, Florida, United States
    Recruiting
  • University of South Florida Rothman Center of Neuropsychiatry
    St. Petersburg, Florida, United States
    Recruiting
  • EmVenio Research at Chicago
    Chicago, Illinois, United States
    Recruiting
  • Baber Research Group
    Naperville, Illinois, United States
    Recruiting
  • Louisiana State University Health Sciences Center Shreveport
    Shreveport, Louisiana, United States
    Recruiting
  • Neurobehavioral Medicine Group
    Bloomfield Hills, Michigan, United States
    Recruiting
  • Alivation Research LLC
    Lincoln, Nebraska, United States
    Recruiting
  • Nathan Kline Institute
    Orangeburg, New York, United States
    Recruiting
  • Richmond Behavioral Associates
    Staten Island, New York, United States
    Recruiting
  • Albert Einstein College Of Medicine
    The Bronx, New York, United States
    Recruiting
  • Advantage Clinical Trials
    The Bronx, New York, United States
    Recruiting
  • Sooner Clinical Research
    Norman, Oklahoma, United States
    Recruiting
  • SP Research, PLLC (dba Rivus Wellness & Research Institute)
    Oklahoma City, Oklahoma, United States
    Recruiting
  • Medical University of South Carolina
    Charleston, South Carolina, United States
    Recruiting
  • Texas Research Group
    Coppell, Texas, United States
    Recruiting
  • North Texas Clinical Trials
    Fort Worth, Texas, United States
    Recruiting
  • Virginia Commonwealth University
    Richmond, Virginia, United States
    Recruiting
  • Core Clinical Research
    Everett, Washington, United States
    Recruiting
  • Advanced Research Institute of Miami
    Homestead, Florida, United States
    Suspended
  • Vital Care Research
    Miami, Florida, United States
    Suspended
  • GTL Medical and Research Group
    Miami, Florida, United States
    Completed
  • Riveldi Biomedical Research
    Miami Lakes, Florida, United States
    Suspended
  • Orlando Psychiatric Associates
    Orlando, Florida, United States
    Completed
  • Advanced Discovery Research
    Atlanta, Georgia, United States
    Completed
  • Salveo Integrative Health Inc
    Lawrenceville, Georgia, United States
    Completed
  • Riley Hospital for Children at Indiana University Health
    Indianapolis, Indiana, United States
    Completed
  • NYU Child Study Center
    New York, New York, United States
    Suspended
  • Quest Therapeutics of Avon Lake
    Avon Lake, Ohio, United States
    Completed
  • BioBehavioral Research of Austin PC
    Austin, Texas, United States
    Completed
  • Future Search Trials of Dallas
    Dallas, Texas, United States
    Completed
  • Red Oak Psychiatry Associates
    Houston, Texas, United States
    Completed

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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.