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ClinicalTrials.gov public records Last synced May 21, 2026, 5:32 PM EDT

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Showing 1–24 of 33 matching trials from the live ClinicalTrials.gov search.
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Conditions
Angelman Syndrome
Interventions
GTX-102
Drug
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
Not listed
Enrollment
255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
6
States / cities
Los Angeles, California • San Diego, California • Atlanta, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Sleep Disorders
Interventions
Circadin 2/5/10 mg, Placebo
Drug
Lead sponsor
Neurim Pharmaceuticals Ltd.
Industry
Eligibility
2 Years to 17 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
18
States / cities
Phoenix, Arizona • Miami Lakes, Florida • Orange City, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2024 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Primary Disease or Condition Being Studied: Angelman Syndrome (AS)
Interventions
Gaboxadol, Placebo
Drug
Lead sponsor
Healx AI
Industry
Eligibility
2 Years to 12 Years
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
9
States / cities
Phoenix, Arizona • San Diego, California • Chicago, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2024 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
1 Year and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Lexington, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome, Fragile X Syndrome
Interventions
OV101
Drug
Lead sponsor
Healx AI
Industry
Eligibility
13 Years to 17 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
2
States / cities
Chicago, Illinois • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 29, 2017 · Synced May 21, 2026, 5:32 PM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers
Conditions
Spinal Muscular Atrophy, Fragile X Syndrome, Fragile X - Premutation, Duchenne Muscular Dystrophy, Hyperinsulinemic Hypoglycemia, Familial 1, Diabetes Mellitus, Adrenoleukodystrophy, Neonatal, Medium-chain Acyl-CoA Dehydrogenase Deficiency, Very Long Chain Acyl Coa Dehydrogenase Deficiency, Beta-ketothiolase Deficiency, Severe Combined Immunodeficiency Due to Adenosine Deaminase Deficiency, Primary Hyperoxaluria Type 1, Congenital Bile Acid Synthesis Defect Type 2, Pyridoxine-Dependent Epilepsy, Hereditary Fructose Intolerance, Hypophosphatasia, Hyperargininemia, Mucopolysaccharidosis Type 6, Argininosuccinic Aciduria, Citrullinemia, Type I, Wilson Disease, Maple Syrup Urine Disease, Type 1A, Maple Syrup Urine Disease, Type 1B, Biotinidase Deficiency, Neonatal Severe Primary Hyperparathyroidism, Intrinsic Factor Deficiency, Usher Syndrome Type 1D/F Digenic (Diagnosis), Cystic Fibrosis, Stickler Syndrome Type 2, Stickler Syndrome Type 1, Alport Syndrome, Autosomal Recessive, Alport Syndrome, X-Linked, Carbamoyl Phosphate Synthetase I Deficiency Disease, Carnitine Palmitoyl Transferase 1A Deficiency, Carnitine Palmitoyltransferase II Deficiency, Cystinosis, Chronic Granulomatous Disease, Cerebrotendinous Xanthomatoses, Maple Syrup Urine Disease, Type 2, Severe Combined Immunodeficiency Due to DCLRE1C Deficiency, Thyroid Dyshormonogenesis 6, Thyroid Dyshormonogenesis 5, Supravalvar Aortic Stenosis, Factor X Deficiency, Hemophilia A, Hemophilia B, Tyrosinemia, Type I, Fructose 1,6 Bisphosphatase Deficiency, Glycogen Storage Disease Type I, G6PD Deficiency, Glycogen Storage Disease II, Galactokinase Deficiency, Mucopolysaccharidosis Type IV A, Galactosemias, Guanidinoacetate Methyltransferase Deficiency, Agat Deficiency, Glutaryl-CoA Dehydrogenase Deficiency, Gtp Cyclohydrolase I Deficiency, Hyperinsulinism-Hyperammonemia Syndrome, Primary Hyperoxaluria Type 2, 3-Hydroxyacyl-CoA Dehydrogenase Deficiency, Long-chain 3-hydroxyacyl-CoA Dehydrogenase Deficiency, Mitochondrial Trifunctional Protein Deficiency, Sickle Cell Disease, Beta-Thalassemia, Holocarboxylase Synthetase Deficiency, 3-Hydroxy-3-Methylglutaric Aciduria, Primary Hyperoxaluria Type 3, Hermansky-Pudlak Syndrome 1, Hermansky-Pudlak Syndrome 4, Apparent Mineralocorticoid Excess, HSDB, CBAS1, Mucopolysaccharidosis Type 2, Mucopolysaccharidosis Type 1, Severe Combined Immunodeficiency, X Linked, Severe Combined Immunodeficiency Due to IL-7Ralpha Deficiency, Diabetes Mellitus, Permanent Neonatal, Isovaleric Acidemia, Severe Combined Immunodeficiency T-Cell Negative B-Cell Positive Due to Janus Kinase-3 Deficiency (Disorder), Jervell and Lange-Nielsen Syndrome 2, Hyperinsulinemic Hypoglycemia, Familial, 2, Diabetes Mellitus, Permanent Neonatal, With Neurologic Features, Jervell and Lange-Nielsen Syndrome 1, Lysosomal Acid Lipase Deficiency, CblF, 3-Methylcrotonyl CoA Carboxylase 1 Deficiency, 3-Methylcrotonyl CoA Carboxylase 2 Deficiency, Waardenburg Syndrome Type 2A, Methylmalonic Aciduria cblA Type, Methylmalonic Aciduria cblB Type, Methylmalonic Aciduria and Homocystinuria Type cblC, MAHCD, Methylmalonic Aciduria Due to Methylmalonyl-CoA Mutase Deficiency, Congenital Disorder of Glycosylation Type 1B, Mthfr Deficiency, Methylcobalamin Deficiency Type Cbl G (Disorder), Methylcobalamin Deficiency Type cblE, Usher Syndrome, Type 1B, N-acetylglutamate Synthase Deficiency, Ornithine Transcarbamylase Deficiency, Phenylketonurias, Waardenburg Syndrome Type 1, Congenital Hypothyroidism, Propionic Acidemia, Usher Syndrome, Type 1F, Pancreatic Agenesis 1, Hereditary Hypophosphatemic Rickets, Glycogen Storage Disease IXB, Glycogen Storage Disease IXC, MOWS, Epilepsy, Early-Onset, Vitamin B6-Dependent, Pyridoxal Phosphate-Responsive Seizures, Pituitary Hormone Deficiency, Combined, 1, Ptsd, Dihydropteridine Reductase Deficiency, Severe Combined Immunodeficiency Due to RAG1 Deficiency, Severe Combined Immunodeficiency Due to RAG2 Deficiency, Retinoblastoma, Multiple Endocrine Neoplasia Type 2B, Pseudohypoaldosteronism, Type I, Liddle Syndrome, Biotin-Responsive Basal Ganglia Disease, SCD, DIAR1, GSD1C, Acrodermatitis Enteropathica, Thyroid Dyshormonogenesis 1, Riboflavin Transporter Deficiency, Waardenburg Syndrome, Type 2E, SRD, Congenital Lipoid Adrenal Hyperplasia Due to STAR Deficiency, Barth Syndrome, Adrenocorticotropic Hormone Deficiency, Transcobalamin II Deficiency, Thyroid Dyshormonogenesis 3, Segawa Syndrome, Autosomal Recessive, Autosomal Recessive Nonsyndromic Hearing Loss, Thyroid Dyshormonogenesis 2A, Congenital Isolated Thyroid Stimulating Hormone Deficiency, Hypothyroidism Due to TSH Receptor Mutations, Usher Syndrome Type 1C, Usher Syndrome Type 1G (Diagnosis), Von Willebrand Disease, Type 3, Combined Immunodeficiency Due to ZAP70 Deficiency, Adenine Phosphoribosyltransferase Deficiency, Metachromatic Leukodystrophy, Canavan Disease, Menkes Disease, Carbonic Anhydrase VA Deficiency, Developmental and Epileptic Encephalopathy 2, 17 Alpha-Hydroxylase Deficiency, Smith-Lemli-Opitz Syndrome, Krabbe Disease, Glutathione Synthetase Deficiency, Mucopolysaccharidosis Type 7, Rett Syndrome, Molybdenum Cofactor Deficiency, Type A, Niemann-Pick Disease, Type C1, Niemann-Pick Disease Type C2, Ornithine Aminotransferase Deficiency, 3-Phosphoglycerate Dehydrogenase Deficiency, Leber Congenital Amaurosis 2, Dravet Syndrome, Mucopolysaccharidosis Type 3 A, Ornithine Translocase Deficiency, Carnitine-acylcarnitine Translocase Deficiency, Glucose Transporter Type 1 Deficiency Syndrome, Creatine Transporter Deficiency, Niemann-Pick Disease Type A, Pitt Hopkins Syndrome, Tuberous Sclerosis 1, Tuberous Sclerosis 2, Ataxia With Isolated Vitamin E Deficiency, Angelman Syndrome, Prader-Willi Syndrome, Homocystinuria, Permanent Neonatal Diabetes Mellitus, Transient Neonatal Diabetes Mellitus, Factor VII Deficiency, Glycogen Storage Disease Type IXA1, Glycogen Storage Disease, Type IXA2, Glycogen Storage Disease IC, Glycogen Storage Disease Type IB, Central Hypoventilation Syndrome With or Without Hirschsprung Disease
Interventions
Confirmatory Testing
Diagnostic Test
Lead sponsor
RTI International
Other
Eligibility
1 Day to 31 Days
Enrollment
30,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2025
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 3, 2025 · Synced May 21, 2026, 5:32 PM EDT
Completed Phase 2Phase 3 Interventional Results available
Conditions
Angelman Syndrome
Interventions
Levodopa, Placebo Oral Capsule
Drug
Lead sponsor
Wen-Hann Tan
Other
Eligibility
4 Years to 12 Years
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
7
States / cities
San Diego, California • San Francisco, California • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 14, 2020 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome, Chromosome 15q Duplication (dup15q) Syndrome
Interventions
Lumbar Puncture, Blood Collection
Procedure
Lead sponsor
Biogen
Industry
Eligibility
Up to 50 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
5
States / cities
San Diego, California • Chicago, Illinois • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2022 · Synced May 21, 2026, 5:32 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
Conditions
Rett Syndrome, Prader-Willi Syndrome, Angelman Syndrome, Sleep Problems
Interventions
Not listed
Lead sponsor
Baylor College of Medicine
Other
Eligibility
1 Year to 18 Years
Enrollment
804 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
9
States / cities
Birmingham, Alabama • Irvine, California • San Diego, California + 6 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2016 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Trisomy 21, Trisomy 18, Trisomy 13, Sex Chromosome Abnormalities, Microdeletion Syndromes
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,059 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2020
U.S. locations
7
States / cities
San Carlos, California • San Gabriel, California • Washington D.C., District of Columbia + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 29, 2020 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Telomeric 22Q13 Monosomy Syndrome, Tuberous Sclerosis, Hamartoma Syndrome, Multiple, Fragile X Syndrome, Angelman Syndrome, Rett Syndrome, Chromosome 15Q, Partial Deletion, Creatine Deficiency, X-linked
Interventions
Functional Behavioral Training (FBT), Positive Parenting Strategies-Treatment as Usual
Behavioral · Other
Lead sponsor
Rush University Medical Center
Other
Eligibility
2 Years to 12 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Williams Syndrome, Angelman Syndrome, Prader-Willi Syndrome, Shprintzen Syndrome, Smith-Magenis Syndrome, DiGeorge Syndrome, Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
0 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome
Interventions
ION582
Drug
Lead sponsor
Ionis Pharmaceuticals, Inc.
Industry
Eligibility
0 Years to 50 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2029
U.S. locations
6
States / cities
San Diego, California • Aurora, Colorado • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced May 21, 2026, 5:32 PM EDT
Completed Not applicable Interventional Results available
Conditions
Angelman Syndrome
Interventions
minocycline
Drug
Lead sponsor
University of South Florida
Other
Eligibility
4 Years to 12 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Apr 17, 2023 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome
Interventions
Nutritional Formulation Containing Exogenous Ketones, Placebo Formulation
Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
4 Years to 11 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 19, 2020 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome
Interventions
Alogabat
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
5 Years to 17 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
6
States / cities
Chicago, Illinois • Boston, Massachusetts • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome
Interventions
RO7248824
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
1 Year to 12 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
7
States / cities
Los Angeles, California • San Diego, California • Chicago, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 23, 2025 · Synced May 21, 2026, 5:32 PM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers
Conditions
Fragile X Syndrome, Angelman Syndrome, Prader-Willi Syndrome, Dup15Q Syndrome, Duchenne Muscular Dystrophy, Phelan-McDermid Syndrome, Rett Syndrome, Smith Magenis Syndrome, Williams Syndrome, Turner Syndrome, Klinefelter Syndrome, Chromosome 22q11.2 Deletion Syndrome, Tuberous Sclerosis, Down Syndrome
Interventions
Parent-Infant Inter(X)action Intervention (PIXI)
Behavioral
Lead sponsor
RTI International
Other
Eligibility
Up to 99 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced May 21, 2026, 5:32 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
Conditions
22q11 Deletion Syndrome, DiGeorge Syndrome, Trisomy 21, Trisomy 18, Trisomy 13, Monosomy X, Sex Chromosome Abnormalities, Cri-du-Chat Syndrome, Angelman Syndrome, Prader-Willi Syndrome, 1p36 Deletion Syndrome
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years to 48 Years · Female only
Enrollment
20,960 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
16
States / cities
San Francisco, California • Camden, New Jersey • Mount Laurel, New Jersey + 10 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2021 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome
Interventions
ION582, Placebo
Drug
Lead sponsor
Ionis Pharmaceuticals, Inc.
Industry
Eligibility
2 Years to 50 Years
Enrollment
158 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
15
States / cities
Los Angeles, California • San Diego, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced May 21, 2026, 5:32 PM EDT
Completed No phase listed Observational Accepts healthy volunteers
Conditions
Angelman Syndrome
Interventions
Not listed
Lead sponsor
The Emmes Company, LLC
Industry
Eligibility
1 Year and older
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Kingston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 12, 2023 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Microdeletion Syndromes, Trisomy 21, Trisomy 18, Trisomy 13, Sex Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
Not listed
Enrollment
216 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
2
States / cities
San Carlos, California • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 25, 2019 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome
Interventions
OV101 Regimen 1, OV101 regimen 2, Placebo
Drug · Other
Lead sponsor
Healx AI
Industry
Eligibility
13 Years to 49 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
12
States / cities
Phoenix, Arizona • San Diego, California • Gainesville, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2025 · Synced May 21, 2026, 5:32 PM EDT
Conditions
Angelman Syndrome
Interventions
Levodopa/Carbidopa (4:1)
Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
4 Years to 12 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 20, 2016 · Synced May 21, 2026, 5:32 PM EDT