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ClinicalTrials.gov public records Last synced May 21, 2026, 11:27 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Mental Retardation Clear all
Completed No phase listed Observational
View directory record Official record
Conditions
Obstructive Sleep Apnea of Child
Interventions
Adenotonsillectomy, Drug-induced sleep endoscopy directed surgery
Procedure
Lead sponsor
Oregon Health and Science University
Other
Eligibility
2 Years to 18 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 28, 2025 · Synced May 21, 2026, 11:27 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Subglottic Stenosis (SGS), Pierre Robin Sequence (PRS), Micrognathia, Normal Controls From CT Scans of the Upper Airway
Interventions
Not listed
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
Up to 17 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced May 21, 2026, 11:27 PM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Deafness, Hearing Loss
Interventions
cochlear implantation, hearing aids
Device
Lead sponsor
Stanford University
Other
Eligibility
1 Day to 5 Years
Enrollment
303 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2016
U.S. locations
2
States / cities
Stanford, California • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 14, 2016 · Synced May 21, 2026, 11:27 PM EDT
Available No phase listed Expanded access
View directory record Official record
Conditions
Hematologic Malignancies, Inborn Errors of Metabolism Disorders, Immune Deficiencies
Interventions
CliniMACS CD34 Reagent System
Biological
Lead sponsor
Joanne Kurtzberg, MD
Other
Eligibility
Up to 65 Years
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 19, 2025 · Synced May 21, 2026, 11:27 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Down Syndrome
Interventions
Body weight supported harness
Behavioral
Lead sponsor
Boston University Charles River Campus
Other
Eligibility
Up to 2 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced May 21, 2026, 11:27 PM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available
View directory record Official record
Conditions
Down Syndrome, Trisomy 21
Interventions
Not listed
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
10 Years to 20 Years
Enrollment
257 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 30, 2019 · Synced May 21, 2026, 11:27 PM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Rett Syndrome
Interventions
Trofinetide
Drug
Lead sponsor
ACADIA Pharmaceuticals Inc.
Industry
Eligibility
5 Years to 21 Years · Female only
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
21
States / cities
Birmingham, Alabama • Phoenix, Arizona • La Jolla, California + 18 more
Source: ClinicalTrials.gov public record
Updated Apr 10, 2024 · Synced May 21, 2026, 11:27 PM EDT
Completed Phase 4 Interventional Results available
View directory record Official record
Conditions
Hypofibrinogenemia, Afibrinogenemia, Bleeding Disorders
Interventions
RiaStAP, Saline
Drug
Lead sponsor
Nicklaus Children's Hospital f/k/a Miami Children's Hospital
Other
Eligibility
1 Day to 1 Year
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
2
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Sep 15, 2021 · Synced May 21, 2026, 11:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Intellectual Disability, Exercise, Obesity
Interventions
Resistance Training for Empowerment (RT-POWER), A traditional RT intervention
Behavioral
Lead sponsor
University of Delaware
Other
Eligibility
18 Years to 44 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Nov 4, 2020 · Synced May 21, 2026, 11:27 PM EDT
Active, not recruiting Phase 2 Interventional
View directory record Official record
Conditions
Mucopolysaccharidosis Disorders, Hurler Syndrome, Hunter Syndrome, Maroteaux Lamy Syndrome, Sly Syndrome, Alpha-Mannosidosis, Fucosidosis, Aspartylglucosaminuria, Glycoprotein Metabolic Disorders, Sphingolipidoses, Recessive Leukodystrophies, Globoid Cell Leukodystrophy, Metachromatic Leukodystrophy, Niemann-Pick B, Niemann-Pick C Subtype 2, Sphingomyelin Deficiency, Peroxisomal Disorders, Adrenoleukodystrophy With Cerebral Involvement, Zellweger Syndrome, Neonatal Adrenoleukodystrophy, Infantile Refsum Disease, Acyl-CoA Oxidase Deficiency, D-Bifunctional Enzyme Deficiency, Multifunctional Enzyme Deficiency, Alpha-methylacyl-CoA Racmase Deficiency, Mitochondrial Neurogastrointestingal Encephalopathy, Severe Osteopetrosis, Hereditary Leukoencephalopathy With Axonal Spheroids (HDLS; CSF1R Mutation), Inherited Metabolic Disorders
Interventions
Stem Cell Transplantation, IMD Preparative Regimen, Osteopetrosis Only Preparative Regimen, Osteopetrosis Haploidentical Only Preparative Regimen, cALD SR-A (Standard-Risk, Regimen A), cALD SR-B (Standard-Risk, Regimen B), cALD HR-D (High-Risk, Regimen C), cALD HR-D (High-Risk, Regimen D)
Biological · Drug
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
Up to 55 Years
Enrollment
149 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2029
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced May 21, 2026, 11:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Training Group
Interventions
SPECTROM Training
Behavioral
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced May 21, 2026, 11:27 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Down Syndrome (Trisomy 21), Edward's Syndrome (Trisomy 18), Patau Syndrome (Trisomy 13), Klinefelter Syndrome (47, XXY), and Other Chromosome, Abnormalities.
Interventions
Not listed
Lead sponsor
Lenetix Medical Screening Laboratory
Industry
Eligibility
18 Years and older · Female only
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
7
States / cities
Rockville, Maryland • Moristown, New Jersey • Mineola, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 30, 2009 · Synced May 21, 2026, 11:27 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Prader-Willi Syndrome, Obesity
Interventions
NBT-NM108
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 35 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 15, 2024 · Synced May 21, 2026, 11:27 PM EDT
Withdrawn No phase listed Observational
View directory record Official record
Conditions
Autism, Autism Spectrum Disorder, Autistic Disorder, Autism, Akinetic, Autism; Atypical, Autism; Psychopathy, Autism Fragile Syndrome X, Autism With High Cognitive Abilities, Autism-Related Speech Delay, Autism, Susceptibility to, 6, Autism Spectrum Disorder High-Functioning, Autistic Thinking, Autism, Susceptibility to, X-Linked 6, Autistic Behavior
Interventions
No Intervention
Other
Lead sponsor
ProgenaBiome
Other
Eligibility
6 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2030
U.S. locations
1
States / cities
Ventura, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced May 21, 2026, 11:27 PM EDT
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
DCCR, Placebo for DCCR
Drug
Lead sponsor
Soleno Therapeutics, Inc.
Industry
Eligibility
4 Years and older
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
20
States / cities
Orange, California • Palo Alto, California • San Diego, California + 17 more
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced May 21, 2026, 11:27 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Self-Injurious Behavior, Problem Behavior, Intellectual Disability, Autism Spectrum Disorder, Restricted Behavior
Interventions
AUTOSIB across time, AUTOSIB diminished reinforcement
Behavioral
Lead sponsor
University of Georgia
Other
Eligibility
2 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Randolph, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 26, 2024 · Synced May 21, 2026, 11:27 PM EDT
Active, not recruiting Phase 3 Interventional Results available
View directory record Official record
Conditions
Acute Myeloid Leukemia, Down Syndrome, Myelodysplastic Syndrome, Myeloid Leukemia Associated With Down Syndrome, Myeloproliferative Neoplasm
Interventions
Asparaginase, Asparaginase Erwinia chrysanthemi, Cytarabine, Daunorubicin Hydrochloride, Etoposide, Laboratory Biomarker Analysis, Mitoxantrone Hydrochloride, Thioguanine
Drug · Other
Lead sponsor
Children's Oncology Group
Network
Eligibility
91 Days to 3 Years
Enrollment
280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2026
U.S. locations
169
States / cities
Birmingham, Alabama • Anchorage, Alaska • Mesa, Arizona + 131 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2025 · Synced May 21, 2026, 11:27 PM EDT
Not yet recruiting Phase 2 Interventional
View directory record Official record
Conditions
Cornelia de Lange Syndrome
Interventions
N-acetyl cysteine, Placebo
Drug · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
13 Years to 35 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 5, 2026 · Synced May 21, 2026, 11:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Hyperphagia, Prader-Willi Syndrome
Interventions
tDCS
Device
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 64 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
3
States / cities
Kansas City, Kansas • Boston, Massachusetts • Dousman, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 25, 2019 · Synced May 21, 2026, 11:27 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Developmental Disability, Intellectual Disability, Dental Anxiety
Interventions
Sensory Adapted Dental Environment (SADE)
Behavioral
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
6 Years to 21 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 17, 2018 · Synced May 21, 2026, 11:27 PM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
AZD7325 (High-Dose), AZD7325 (Low-Dose), Placebo oral capsule
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years to 50 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 7, 2021 · Synced May 21, 2026, 11:27 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Intellectual Disabilities, Speech Delay, Language Disorder
Interventions
Pivotal Response Treatment (PRT)
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
2 Years to 17 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jan 11, 2021 · Synced May 21, 2026, 11:27 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Phelan-McDermid Syndrome, Autism Spectrum Disorder, Intellectual Disability
Interventions
Not listed
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Months and older
Enrollment
205 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2026
U.S. locations
5
States / cities
Stanford, California • Chicago, Illinois • Bethesda, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2025 · Synced May 21, 2026, 11:27 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Down Syndrome
Interventions
Parent Supported Behavioral Intervention, Nutrition/Activity Education (NAE)
Behavioral
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
13 Years to 26 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Waltham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 17, 2017 · Synced May 21, 2026, 11:27 PM EDT