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Can a cannabis compound calm autism irritability? new trial seeks answers

NCT ID NCT03202303

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This Phase 2 trial tests whether cannabidivarin (CBDV), a compound from cannabis, can reduce irritability and repetitive behaviors in children with autism spectrum disorder. About 100 children aged 5 to 18 will receive either CBDV or a placebo daily for several weeks. Researchers will track changes in behavior using parent-reported questionnaires.

What this could mean

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

Active substance
Cannabidivarin (CBDV)
What this could lead to
If it works, this could offer a new option to reduce irritability and repetitive behaviors in children with autism.
What could go wrong
This is an early Phase 2 trial with only 100 participants, so results may not apply to everyone. CBDV may cause side effects or prove no better than placebo.

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 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 100 people

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

Started

Apr 2019

Expected to finish

Feb 2027

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

5 to 18 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 1. Male or Female pediatric outpatients aged between and including ages 5 to 18. Diagnosis of Autism Spectrum Disorder (ASD) confirmed by the ADOS-2 and DSM-5 criteria.\*During special circumstances (e.g. COVID-19 pandemic) where the ADOS-2 cannot be performed due to site restrictions (e.g. mandatory use of face masks), eligibility can be confirmed using the Autism Diagnostic Interview, Revised (ADI-R) 2. Aberrant Behavior Checklist (ABC) - Irritability Subscale (ABC-I) score of 18 or greater at screening visit. 3. Social Responsiveness Scale (SRS) score of 66T or higher at screening visit. 4. Clinical Global Impression Scale - Severity (CGI-S) score of 4 or higher at screening. 5. Stable pharmacologic, educational, behavioral and/or dietary interventions for 4 weeks prior to randomization and for the duration of the study. 6. Physical exam and laboratory results that are within normal range for individuals with ASD. 7. Presence of a parent/caregiver/guardian that is able to consent for their participation and complete assessments regarding the child's development and behavior throughout the study. Child Assent will be obtained if the subject is 7 years of age or older and has the mental capacity to understand and sign a written assent form and/or give verbal assent. Exclusion Criteria 1. Exposure to any investigational agent in the 30 days prior to randomization. 2. Prior chronic treatment with CBD, CBDV or an endocannabinoid treatment. 3. Positive testing for THC or other drugs of abuse via urine testing at the screening visit or baseline visits upon repeat confirmation testing. 4. Recent history of drug abuse including marijuana/cannabis use in the past 3 months. 5. Diagnosis of a known genetic disorder (ie. Prader-Willi Syndrome, Angelman Syndrome etc.). 6. A primary psychiatric diagnosis other than ASD, including bipolar disorder, psychosis, schizophrenia, Post-Traumatic Stress Disorder (PTSD) or Major Depressive Disorder (MDD). These patients will be excluded due to potential confounding results. 7. A medical condition that severely impacts the subject's ability to participate in the study, interferes with the conduct of the study, confounds interpretation of study results or endangers the subject's well-being. 8. A known diagnosis of Rett Syndrome or Childhood Disintegrative Disorder, or marked sensory impairment such as deafness or blindness. 9. Subjects who have had changes in allied health therapies, behavioral or educational interventions within four weeks prior to randomization other than those associated with school holidays. 10. Subjects who have had changes in medications or medication doses within four weeks of randomization. Renal, pancreatic, or hematologic dysfunction as evidenced by values above upper limits of normal for BUN/creatinine, or values twice the upper limit of normal for serum lipase and amylase, platelets \<80,000 /mcL, or WBC\<3.0 103 /mcL 11. Liver dysfunction manifested by \> 2 X UNL values of AST or ALT 12. ECG abnormality at baseline screening or clinically significant postural drop in systolic blood pressure at screening. If the initial screening ECG show a QTcB of greater than 460 msec, then 2 additional ECGs will be conducted in the same sitting, 5 minutes apart. If not recognized at screening, then a full triplicate repeat showing an average QTcB of 460 msec or less to meet all inclusion/exclusion criteria. Female subjects who are pregnant will be excluded from the study. If a female subject is able to become pregnant, she will be given a serum pregnancy test before entry into the study. Female subjects will be informed not to become pregnant while taking CBDV. Female subjects must tell the investigator and consult an obstetrician or maternal-fetal specialist if they become pregnant during the study. 13. Known allergy to sesame oil

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    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

  • Montefiore Medical Center

    RECRUITING

    The Bronx, New York, 10467, United States

  • New York University (NYU) Langone

    COMPLETED

    New York, New York, 10016, United States

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