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Showing 1–24 of 361 matching trials from the live ClinicalTrials.gov search.
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Recruiting Phase 3 Interventional

Compassionate Use Study of Epi-ON Corneal Collagen Crosslinking Performed Using UVA Exposure on Eyes With Ectatic Corneal Diseases for Subjects With Down Syndrome

NCT07135167
View directory record Official record
Conditions
Down Syndrome (DS), Keratoconus, Pellucid Marginal Degeneration, Forme Fruste Keratoconus (FFK)
Interventions
Epi-ON corneal cross-linking (CXL)
Combination Product
Lead sponsor
Woolfson Eye Institute
Other
Eligibility
8 Years and older
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
12
States / cities
Atlanta, Georgia • Canton, Georgia • Cumming, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2026 · Synced Sep 5, 2026, 5:29 PM EDT
Terminated Phase 3 Interventional Results available

Evaluating The Efficacy And Safety Of Donepezil Hydrochloride (Aricept) In The Treatment Of The Cognitive Dysfunction Exhibited By Children With Down Syndrome, Aged 11 To 17

NCT00754052
View directory record Official record
Conditions
Down Syndrome, Cognitive Dysfunction
Interventions
Aricept (donepezil hydrochloride), Placebo
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
11 Years to 17 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
2
States / cities
San Antonio, Texas • Herndon, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 22, 2018 · Synced Sep 5, 2026, 5:29 PM EDT
Recruiting Phase 1Phase 2 Interventional

A Study to Assess the Effects of ACI-24.060 in Alzheimer's Disease and in Down Syndrome (ABATE Study)

NCT05462106
View directory record Official record
Conditions
Amyloid Plaque, Beta-Amyloid, DSAD, Prodromal Alzheimer's Disease, Alzheimer's Disease
Interventions
Placebo (Study Part 1a), ACI-24.060 at Dose A in Study Part 1a, ACI-24.060 at Dose B in Study Part 1a, ACI-24.060 at Dose C in Study Part 1a, ACI-24.060 with an additional adjuvant at Dose D in Study Part 1b, Placebo (Study Part 2), ACI-24.060 at Dose A in Study Part 2, ACI-24.060 at Dose B in Study Part 2, ACI-24.060 at Dose C in Study Part 2, Placebo (Study Part 1b), ACI-24.060 with an additional adjuvant at Dose E in Study Part 1b
Biological
Lead sponsor
AC Immune SA
Industry
Eligibility
35 Years to 85 Years
Enrollment
304 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
13
States / cities
Phoenix, Arizona • Lady Lake, Florida • Orlando, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Sep 5, 2026, 5:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Phenotypic Specific Communication Intervention for Children With Down Syndrome

NCT02158390
View directory record Official record
Conditions
Language Impairment, Down Syndrome
Interventions
Jasper-EMT with words and AAC
Behavioral
Lead sponsor
Vanderbilt University
Other
Eligibility
30 Months to 54 Months
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
2
States / cities
Los Angeles, California • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 11, 2018 · Synced Sep 5, 2026, 5:29 PM EDT
Completed Not applicable Interventional

Life Skills Improved in Children With Down Syndrome After Using Assistive Technology

NCT05343468
View directory record Official record
Conditions
Down Syndrome, Adaptive Behavior, Quality of Life
Interventions
The MapHabit System
Device
Lead sponsor
MapHabit, Inc.
Industry
Eligibility
7 Years to 17 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 23, 2023 · Synced Sep 5, 2026, 5:29 PM EDT
Not listed Not applicable Interventional

Transcranial Photobiomodulation With Near-Infrared Light for Language in Individuals With Down Syndrome

NCT04668001
View directory record Official record
Conditions
Down Syndrome
Interventions
Near-Infrared Transcranial Photobiomodulation, Sham Transcranial Photobiomodulation
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
16 Years to 35 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Charlestown, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 30, 2024 · Synced Sep 5, 2026, 5:29 PM EDT
Recruiting Not applicable Interventional

Blood Flow Restriction And Veterans With MS

NCT05433103
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Low-Load Exercise with Blood Flow Restriction, Low-Load Exercise Control Group
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 75 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Sep 5, 2026, 5:29 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Understanding the Role of Gut Microbiota in Hyperphagia in Prader-Willi Syndrome

NCT05541003
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 Sep 5, 2026, 5:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Parent Supported Weight Reduction in Down Syndrome

NCT01256112
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 Sep 5, 2026, 5:29 PM EDT
Recruiting No phase listed Observational

Patterns of Neurodevelopmental Disorders

NCT06213090
View directory record Official record
Conditions
Neurodevelopmental Disorders, Autism Spectrum Disorder, Pediatric Autoimmune Neuropsychiatric Disorder Associated With Streptococcal Infection, Pediatric Acute-Onset Neuropsychiatric Syndrome, Down Syndrome, Epilepsy, Mitochondrial Encephalomyopathies, Cerebral Folate Deficiency
Interventions
Not listed
Lead sponsor
Richard Frye
Other
Eligibility
Not listed
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Sep 5, 2026, 5:29 PM EDT
Completed Not applicable Interventional

Delivering Early Intervention to Children With Down Syndrome

NCT03935620
View directory record Official record
Conditions
Down Syndrome
Interventions
Enhanced Milieu teaching
Behavioral
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Months to 36 Months
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 1, 2022 · Synced Sep 5, 2026, 5:29 PM EDT
Completed Phase 1 Interventional

Clinical Study to Assess the Pharmacokinetics, Safety and Tolerability of Single and Multiple Oral Doses of AFQ056 in Children With Fragile X Syndrome (FXS)

NCT01482143
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
AFQ056
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
3 Years to 11 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
3
States / cities
Sacramento, California • Chicago, Illinois • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 7, 2020 · Synced Sep 5, 2026, 5:29 PM EDT
Active, not recruiting Phase 2 Interventional

A Study of Setmelanotide in Patients With Prader-Willi Syndrome

NCT06772597
View directory record Official record
Conditions
Prader-Willi Syndrome, Obesity, Hyperphagia
Interventions
Setmelanotide
Drug
Lead sponsor
Rhythm Pharmaceuticals, Inc.
Industry
Eligibility
6 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Sep 5, 2026, 5:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Restoration of Walking in Multiple Sclerosis Using Treadmill Training.

NCT00156676
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Body-weight supported treadmill, Lokomat
Device
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 19, 2013 · Synced Sep 5, 2026, 5:29 PM EDT
Completed Not applicable Interventional

Intensive Dysarthria Sessions in Adults and Children With Down Syndrome

NCT01684670
View directory record Official record
Conditions
Dysarthria, Down Syndrome
Interventions
Speech sessions
Behavioral
Lead sponsor
Duke University
Other
Eligibility
8 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 22, 2016 · Synced Sep 5, 2026, 5:29 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

RASopathy Biorepository

NCT04395495
View directory record Official record
Conditions
RAS Mutation, Neurofibromatosis 1, Noonan Syndrome, Noonan Syndrome With Multiple Lentigines, Noonan Neurofibromatosis Syndrome, Cardiofaciocutaneous Syndrome, Costello Syndrome, Legius Syndrome, Smith-Kingsmore Syndrome, MTOR Gene Mutation, GATOR-1 Gene Mutation, SYNGAP1-Related Intellectual Disability, DLG4, MAPK1 Gene Mutation
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
Not listed
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2065
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Sep 5, 2026, 5:29 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sleep Abnormalities in Rare Genetic Disorders: AS, RTT, and PW

NCT02670694
View directory record Official record
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 Sep 5, 2026, 5:29 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Social Support and Stress Reduction for Caregivers of Young Adults With IDD

NCT05938998
View directory record Official record
Conditions
Burden, Caregiver
Interventions
Yoga; Support Group
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Sep 5, 2026, 5:29 PM EDT
Recruiting Not applicable Interventional

Impact of the Cionic Neural Sleeve on Mobility in Multiple Sclerosis

NCT05964829
View directory record Official record
Conditions
Multiple Sclerosis, Multiple Sclerosis, Relapsing-Remitting, Multiple Sclerosis, Chronic Progressive
Interventions
Cionic Neural Sleeve NS-100, Walking Program
Device · Behavioral
Lead sponsor
Cionic, Inc.
Industry
Eligibility
22 Years to 75 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Sep 5, 2026, 5:29 PM EDT
Completed Not applicable Interventional Results available

Decreasing Alzheimer's Risk Through oNline Choreographed Exercise - Down Syndrome

NCT06537648
View directory record Official record
Conditions
Down Syndrome, Physical Inactivity
Interventions
Decreasing Alzheimer's Risk Through oNline Choreographed Exercise - Down Syndrome Program
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 64 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 5, 2026, 5:29 PM EDT
Enrolling by invitation No phase listed Observational

Observational Study of VYKAT™ XR in Patients With Prader-Willi Syndrome

NCT07450664
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
VYKAT XR
Drug
Lead sponsor
Soleno Therapeutics, Inc.
Industry
Eligibility
4 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
24
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 21 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 5, 2026, 5:29 PM EDT
Recruiting No phase listed Observational

Online Study of People Who Have Genetic Changes and Features of Autism: Simons Searchlight

NCT01238250
View directory record Official record
Conditions
16P11.2 Deletion Syndrome, 16p11.2 Duplications, 1Q21.1 Deletion, 1Q21.1 Microduplication Syndrome (Disorder), ACTL6B, ADNP, AHDC1, ANK2, ANKRD11, ARID1B, ASH1L, BCL11A, CHAMP1, CHD2, CHD8, CSNK2A1, CTBP1, CTNNB1 Gene Mutation, CUL3, DDX3X, DNMT3A, DSCAM, DYRK1A, FOXP1, GRIN2A, GRIN2B, HIVEP2-Related Intellectual Disability, HNRNPH2, KATNAL2, KDM5B, KDM6B, KMT2C Gene Mutation, KMT2E, KMT5B, MBD5, MED13L, PACS1, PPP2R5D-Related Intellectual Disability, PTCHD1, REST, SCN2A Encephalopathy, SETBP1 Gene Mutation, SETD5, SMARCA4 Gene Mutation, SMARCC2, STXBP1 Encephalopathy With Epilepsy, SYNGAP1-Related Intellectual Disability, TBR1, ARHGEF9, HNRNPU, PPP3CA, PPP2R1A, SLC6A1, 2p16.3 Deletions, 5q35 Deletions, 5q35 Duplications, 7q11.23 Duplications, 15Q13.3 Deletion Syndrome, 16p11.2 Triplications, 16P12.2 Microdeletion, 16P13.11 Microdeletion Syndrome (Disorder), 17Q12 Microdeletion Syndrome (Disorder), 17Q12 Duplication Syndrome, 17Q21.31 Deletion Syndrome, 17q21.3 Duplications, ACTB, ADSL, AFF2, ALDH5A1, ANK3, ARX, ATRX Gene Mutation, AUTS2 Syndrome, BCKDK, BRSK2, CACNA1C, CAPRIN1, CASK, CASZ1, CHD3, CIC, CNOT3, CREBBP Gene Mutation, CSDE1, CTCF, DEAF1, DHCR7, DLG4, EBF3, EHMT1, EP300 Gene Mutation, GIGYF1, GRIN1, GRIN2D, IQSEC2-Related Syndromic Intellectual Disability, IRF2BPL, KANSL1, KCNB1, KDM3B, NEXMIF, KMT2A, MBOAT7, MEIS2, MYT1L, NAA15, NBEA, NCKAP1, NIPBL, NLGN2, NLGN3, NLGN4X, NR4A2, NRXN1, NRXN2, NSD1 Gene Mutation, PHF21A, PHF3, PHIP, PSMD12, RELN, RERE, RFX3, RIMS1, RORB, SCN1A, SETD2 Gene Mutation, SHANK2, SIN3A, SLC9A6, SON, SOX5, SPAST, SRCAP, TAOK1, TANC2, TCF20, TLK2, TRIO, TRIP12, UPF3B, USP9X, VPS13B, WAC, WDFY3, ZBTB20, ZNF292, ZNF462, 2Q37 Deletion Syndrome, 9q34 Duplications, 15q15 Deletions, 15Q24 Deletion, NR3C2, SYNCRIP, 2q37.3 Deletion, 6q16 Deletion, 15q11.2 BP1-BP2 Deletion, 16p13.3 Deletion, 17Q11.2 Microduplication Syndrome (Disorder), 17p13.3, Xq28 Duplication, CLCN4, CSNK2B, DYNC1H1, EIF3F, GNB1, MED13, MEF2C, RALGAPB, SCN1B, YY1, Xp11.22 Duplication, PACS2, MAOA, MAOB, HNRNPC, HNRNPD, HNRNPK, HNRNPR, HNRNPUL2, 5P Deletion Syndrome, TCF7L2 Gene Mutation, HECW2, PPM1D, RNU4-2, SNAP25, FOXP2, ITSN1
Interventions
Not listed
Lead sponsor
Simons Searchlight
Other
Eligibility
Not listed
Enrollment
100,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2050
U.S. locations
2
States / cities
Boston, Massachusetts • Lewisburg, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Sep 5, 2026, 5:29 PM EDT
Completed Not applicable Interventional Results available

Treadmill Training and Orthotic Use in Infants With Down Syndrome

NCT00825175
View directory record Official record
Conditions
Down Syndrome
Interventions
Treadmill Training, Supramalleolar Orthoses
Behavioral · Device
Lead sponsor
University of Michigan
Other
Eligibility
6 Months to 36 Months
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 3, 2017 · Synced Sep 5, 2026, 5:29 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

High Risk Multiple Gestation Study

NCT02278874
View directory record Official record
Conditions
Trisomy 13, Trisomy 18, Trisomy 21, Sex Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older
Enrollment
99 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
4
States / cities
Boston, Massachusetts • Glen Cove, New York • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2019 · Synced Sep 5, 2026, 5:29 PM EDT