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ClinicalTrials.gov public records Last synced May 22, 2026, 2:44 AM EDT

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Showing 25–33 of 9 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Angelman Syndrome Clear all
Completed No phase listed Observational
View directory record Official record
Conditions
Angelman Syndrome
Interventions
Not listed
Lead sponsor
Boston Children's Hospital
Other
Eligibility
1 Day to 60 Years
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
6
States / cities
San Diego, California • Boston, Massachusetts • Cincinnati, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2021 · Synced May 22, 2026, 2:44 AM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Angelman Syndrome
Interventions
Not listed
Lead sponsor
Boston Children's Hospital
Other
Eligibility
Not listed
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2031
U.S. locations
8
States / cities
Los Angeles, California • San Diego, California • Aurora, Colorado + 5 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2025 · Synced May 22, 2026, 2:44 AM EDT
Completed Phase 1Phase 2 Interventional
View directory record Official record
Conditions
Angelman Syndrome
Interventions
GTX-102
Drug
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
4 Years to 17 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
6
States / cities
Los Angeles, California • San Diego, California • Atlanta, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced May 22, 2026, 2:44 AM EDT
Recruiting Phase 1Phase 2 Interventional
View directory record Official record
Conditions
Angelman Syndrome
Interventions
MVX-220
Genetic
Lead sponsor
MavriX Bio, LLC
Industry
Eligibility
4 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
3
States / cities
Los Angeles, California • Chicago, Illinois • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 15, 2026 · Synced May 22, 2026, 2:44 AM EDT
Terminated Phase 3 Interventional Results available
View directory record Official record
Conditions
Angelman Syndrome
Interventions
OV101
Drug
Lead sponsor
Healx AI
Industry
Eligibility
13 Years to 49 Years
Enrollment
141 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
10
States / cities
Phoenix, Arizona • San Diego, California • Atlanta, Georgia + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced May 22, 2026, 2:44 AM EDT
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Angelman Syndrome, Prader-Willi Syndrome
Interventions
Newborn Screening Assay
Diagnostic Test
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
Not listed
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 5, 2023 · Synced May 22, 2026, 2:44 AM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Angelman Syndrome, Nervous System Diseases
Interventions
Betaine, Creatine, Metafolin, Vitamin B12
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
1 Day to 5 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
4
States / cities
San Diego, California • Boston, Massachusetts • Greenwood, South Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2012 · Synced May 22, 2026, 2:44 AM EDT
Recruiting Phase 2 Interventional
View directory record Official record
Conditions
Angelman Syndrome
Interventions
No intervention, GTX-102
Other · Drug
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
1 Year to 64 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
9
States / cities
Los Angeles, California • Chicago, Illinois • Baltimore, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced May 22, 2026, 2:44 AM EDT
Active, not recruiting Phase 3 Interventional
View directory record Official record
Conditions
Angelman Syndrome
Interventions
GTX-102, Sham-LP
Drug · Procedure
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
4 Years to 17 Years
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
14
States / cities
Los Angeles, California • San Diego, California • San Francisco, California + 11 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced May 22, 2026, 2:44 AM EDT