Clinical trial Recruiting at 32 sites Phase 3 Interventional Ages 5 to 17

Treatment of irritability in children with autism 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. · NCT06690398 · Data updated 2026-11-12

This study is testing if a medication called lumateperone can help reduce irritability in children with autism, ages 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
Locations39 sites (Dothan, Alabama and 38 other locations)
StatusRecruiting
StartedNovember 22, 2024
Main results expectedJune 21, 2027
Study endsJuly 19, 2027
Registry record updatedNovember 3, 2026
Trial IDNCT06690398 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are pediatric patients aged 13 to 17 years diagnosed with irritability associated with Autism Spectrum Disorder.

Probably not a fit

Patients outside the age range of 5 to 17 years or those without a confirmed 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, followed by a 6-week double-blind treatment phase where participants will receive either a high dose, low dose of lumateperone, or a placebo. After treatment, there will be a safety follow-up period to monitor any adverse effects. The study is designed to provide robust data on the safety and effectiveness of lumateperone for this specific condition.

Why it matters

Potential benefit: If successful, this treatment could significantly reduce irritability 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 treating irritability in ASD, suggesting potential for success in this trial.

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 (C-SSRS) 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

  • Harmonex Neuroscience Research
    Dothan, Alabama, United States
    Recruiting
  • Southwest Autism Research and Resource Center
    Phoenix, Arizona, United States
    Recruiting
  • Advanced Research Center Inc
    Anaheim, California, United States
    Recruiting
  • Excell Research Inc
    Oceanside, California, United States
    Recruiting
  • Inland Psychiatric Medical Group Inc
    Redlands, California, United States
    Recruiting
  • Next Level Clinical Trials, LLC
    West Covina, California, United States
    Recruiting
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    Flower Mound, Texas, United States
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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.