Clinical trial Recruiting at 10 sites Observational

Natural history study of Angelman Syndrome

Official title: Angelman Syndrome Natural History Study

Run by Boston Children's Hospital · NCT04507997 · Data updated 2026-11-12

This study is trying to learn more about how Angelman Syndrome affects children and adults over time to help improve care and future treatments.

Quick facts

Study typeObservational
SexAll
Enrollment300 (estimated)
SponsorBoston Children's Hospital
Academic / other
Locations11 sites (Los Angeles, California and 10 other locations)
StatusRecruiting
StartedAugust 1, 2018
Main results expectedApril 2031
Study endsApril 2031
Registry record updatedApril 3, 2025
Trial IDNCT04507997 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are individuals with a confirmed molecular diagnosis of Angelman Syndrome.

Probably not a fit

Patients with another neurodevelopmental condition unrelated to Angelman Syndrome 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 observational study aims to gather comprehensive data on the long-term natural history of Angelman Syndrome in children and adults. By utilizing both investigator-observed and parent-reported outcome measures, the study seeks to establish Angelman-specific norms that can inform future clinical trials. The findings will enhance the understanding of the condition and ultimately improve care for individuals affected by Angelman Syndrome.

Why it matters

Potential benefit: If successful, this study could provide valuable insights that lead to improved treatment and care strategies for patients with Angelman Syndrome.

How similar studies have gone: Other studies focusing on the natural history of genetic disorders have shown success in improving understanding and treatment approaches, making this study a valuable addition to the field.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Molecular diagnosis of Angelman syndrome

Exclusion Criteria:

* Presence of another condition, unrelated to Angelman syndrome, that affects neurodevelopment

Where it's running

  • Rady Children's Hospital, San Diego
    San Diego, California, United States
    Recruiting
  • Children's Hospital Colorado, Anschutz Medical Campus
    Aurora, Colorado, United States
    Recruiting
  • Emory University School of Medicine
    Atlanta, Georgia, United States
    Recruiting
  • Rush University Children's Hospital
    Chicago, Illinois, United States
    Recruiting
  • Boston Children's Hospital
    Boston, Massachusetts, United States
    Recruiting
  • The Carolina Institute for Developmental Disabilities
    Carrboro, North Carolina, United States
    Recruiting
Show 5 more locations
  • Monroe Carell Jr. Children's Hospital at Vanderbilt
    Nashville, Tennessee, United States
    Recruiting
  • Alberta Children's Hospital
    Calgary, Alberta, Canada
    Recruiting
  • BC Children's Hospital
    Vancouver, British Columbia, Canada
    Recruiting
  • Children's Hospital of Eastern Ontario
    Ottawa, Ontario, Canada
    Recruiting
  • Cedars-Sinai Guerin Children's
    Los Angeles, California, United States
    Not yet recruiting

Study contacts

Similar studies

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

  • Obudanersen for Angelman Syndrome in UPD/ID patients

    This study tests obudanersen in children and adults with Angelman syndrome caused by UPD or imprinting defects to see if it improves expressive communication.

    Recruiting Phase 3 Ionis Pharmaceuticals, Inc. · Carrboro, North Carolina · NCT07782827

  • Rugonersen in Angelman Syndrome (phase 3)

    This trial tests whether rugonersen given into the spine can help people with Angelman syndrome, compared with a sham procedure.

    Recruiting at 10 sites Phase 3 OHB Pediatrics Ltd. · Los Angeles, California and 9 other locations · NCT07605429

  • Tracking changes in Angelman syndrome over 12 months

    This study will see how developmental skills, behavior, sleep, and brain activity change over one year in children and adults with a genetically confirmed diagnosis of Angelman syndrome.

    Recruiting Massachusetts General Hospital · Lexington, Massachusetts · NCT07417137

  • MVX-220 gene therapy for Angelman syndrome

    This study will try a single dose of MVX-220 gene therapy injected into the cisterna magna for children and adults with Angelman syndrome caused by UBE3A deletion, uniparental disomy, or imprinting center defects.

    Recruiting at 3 sites Phase 1/2 MavriX Bio, LLC · Los Angeles, California and 2 other locations · NCT07181837

  • Using eye tracking to understand social perception in children with Angelman syndrome

    This study is testing how children with Angelman syndrome see and understand social situations compared to healthy kids, using eye tracking technology to help find ways to measure their progress in future treatments.

    Recruiting Assistance Publique - Hôpitaux de Paris · Paris · NCT06737718

  • Understanding brain connectivity in drug-resistant epilepsy and neurodevelopmental syndromes

    This study is testing how the brain connects in people with drug-resistant epilepsy and certain developmental disorders to see if it can help improve their treatment options.

    Recruiting IRCCS Eugenio Medea · Conegliano, Treviso · NCT06353620

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.