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ClinicalTrials.gov public records Last synced Oct 4, 2026, 2:41 AM EDT

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Showing 1–24 of 211 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Down Syndrome, Trisomy 21 Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Comparison of a Demand Oxygen Delivery

NCT06609694
View directory record Official record
Conditions
Obstructive Apnea
Interventions
Portable oxygen concentrator Inogen G5 model
Device
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
5 Years to 17 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Not applicable Interventional Results available

Promotion of Physical Activity in Adolescents With Intellectual and Developmental Disabilities

NCT03684512
View directory record Official record
Conditions
Adolescent Behavior, Intellectual Disability, Down Syndrome, Physical Activity
Interventions
Group Exercise Sessions, Individual Support Sessions, Facebook Group
Behavioral
Lead sponsor
University of Kansas
Other
Eligibility
10 Years to 21 Years
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Lawrence, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 3, 2023 · Synced Oct 4, 2026, 2:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluating Cognitive Outcomes in Down Syndrome

NCT04208685
View directory record Official record
Conditions
Down Syndrome
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
6 Years to 35 Years
Enrollment
202 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
2
States / cities
Fort Collins, Colorado • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Oct 4, 2026, 2:41 AM EDT
Not yet recruiting Not applicable Interventional

Executive Function Play Opportunities for Children With Down Syndrome

NCT07792382
View directory record Official record
Conditions
Down Syndrome, Trisomy 21
Interventions
EXPO, EXPO Extended, EXPO Foundations
Behavioral
Lead sponsor
Colorado State University
Other
Eligibility
36 Months to 72 Months
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Depressed AIRE Gene Expression Causes Immune Cell Dysfunction & Autoimmunity in Down Syndrome

NCT02421276
View directory record Official record
Conditions
Down Syndrome, Polyendocrinopathies, Autoimmune, Respiratory Tract Infections, Autoimmunity
Interventions
Phlebotomy
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
Up to 22 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 19, 2022 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

An Online Health Tool About Down Syndrome: Down Syndrome Clinic to You

NCT04227197
View directory record Official record
Conditions
Down Syndrome
Interventions
Down Syndrome Clinic to You (DSC2U)
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
1 Year and older
Enrollment
281 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 14, 2022 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Phase 2 Interventional Results available

Evaluating The Efficacy And Safety Of Donepezil Hydrochloride (HCl) (Aricept) In Treating Cognitive Dysfunction Exhibited By Children With Down Syndrome

NCT00570128
View directory record Official record
Conditions
Down Syndrome
Interventions
Donepezil HCl, Placebo
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
10 Years to 17 Years
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
31
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 25 more
Source: ClinicalTrials.gov public record
Updated Apr 19, 2021 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Not applicable Interventional Results available

Promoting Health Through Parent Empowerment and the Activation of Routines (PrO-PEAR)

NCT05020366
View directory record Official record
Conditions
Down Syndrome
Interventions
Promoting Health through Parent Empowerment and the Activation of Routines, Enhanced Usual Care
Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
12 Months and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 15, 2024 · Synced Oct 4, 2026, 2:41 AM EDT
Completed No phase listed Observational

A Screening Protocol to Assess Adults and Adolescents With Down Syndrome for Eligibility For Upcoming Study of RG1662 (Study BP27832)

NCT01920633
View directory record Official record
Conditions
Down Syndrome
Interventions
Not listed
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
12 Years to 30 Years
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
9
States / cities
La Jolla, California • Decatur, Georgia • Chicago, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 19, 2017 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Phase 3 Interventional

Chemotherapy in Treating Children With Down Syndrome and Myeloproliferative Disorder, Acute Myelogenous Leukemia, or Myelodysplastic Syndrome

NCT00003593
View directory record Official record
Conditions
Leukemia, Myelodysplastic Syndromes, Myelodysplastic/Myeloproliferative Neoplasms
Interventions
asparaginase, cytarabine, daunorubicin hydrochloride, methotrexate, therapeutic hydrocortisone, thioguanine
Drug
Lead sponsor
Children's Oncology Group
Network
Eligibility
Up to 21 Years
Enrollment
254 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2012
U.S. locations
209
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 151 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2013 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Not applicable Interventional

Proactive Speech and Language Intervention for Infants With Down Syndrome

NCT06450509
View directory record Official record
Conditions
Down Syndrome
Interventions
Babble Boot Camp
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
0 Months to 12 Months
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 4, 2026, 2:41 AM EDT
Active, not recruiting Phase 1 Interventional Results available

Highest Dose of Uproleselan in Combination With Fludarabine and Cytarabine for Patients With Acute Myeloid Leukemia, Myelodysplastic Syndrome, or Mixed Phenotype Acute Leukemia Relapsed or Refractory That Expresses E-selectin Ligand on the Cell Membrane

NCT05146739
View directory record Official record
Conditions
Acute Myeloid Leukemia Post Cytotoxic Therapy, Myelodysplastic Syndrome Post Cytotoxic Therapy, Myeloid Leukemia Associated With Down Syndrome, Recurrent Acute Myeloid Leukemia, Recurrent Mixed Phenotype Acute Leukemia, Recurrent Myelodysplastic Syndrome, Refractory Acute Myeloid Leukemia, Refractory Mixed Phenotype Acute Leukemia, Refractory Myelodysplastic Syndrome
Interventions
Cytarabine, Fludarabine, Leucovorin, Triple Intrathecal Chemotherapy, Uproleselan
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Up to 17 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
19
States / cities
Birmingham, Alabama • Los Angeles, California • Orange, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Oct 4, 2026, 2:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Down Syndrome Metabolic Health Study

NCT01821300
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 31, 2019 · Synced Oct 4, 2026, 2:41 AM EDT
Active, not recruiting Phase 2 Interventional

Medications for Obstructive Sleep Apnea to Improve Cognition in Children With Down Syndrome

NCT05933603
View directory record Official record
Conditions
Obstructive Sleep Apnea, Down Syndrome
Interventions
Atomoxetine and Oxybutynin (ato-oxy)
Drug
Lead sponsor
University of Arizona
Other
Eligibility
6 Years to 17 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Oct 4, 2026, 2:41 AM EDT
Recruiting No phase listed Observational

Intensive Multimodal Neurorehabilitation Targeting Neuroplasticity in Pediatric Neurodevelopmental and Chromosomal Disorders

NCT07493096
View directory record Official record
Conditions
Neurodevelopmental Disorders, Neurodevelopmental Disorders (NDD), Neurodevelopmental Disorders and Developmental Abnormalities, Developmental Delay (Disorder), Cerebral Palsy (CP), Cerebral Palsy Hemiparetic Cerebral Palsy Spasticity Gait Disorders, Neurologic Postural Balance Impairment, Cerebral Palsy Infantile, Cerebral Palsy Spastic Hemiplegic, Cerebral Palsy, Dyskinetic, Autism Spectrum Disorder, Autism Spectrum Disorder (ASD, Hypoxic Ischemic Encephalopathy, Hypoxic Ischemic Encephalopathy (HIE), Traumatic Brain Injury (TBI), Sensory Processing Disorder, Chromosomal Abnormalities, Genetic Disorders, Down Syndrome (Trisomy 21), Fragile X Syndrome (FXS), RETT Syndrome With Proven MECP2 Mutation, Williams Syndrome, 22q11.2 Deletion Syndrome, Sensorimotor Integration
Interventions
Not listed
Lead sponsor
Healing Hope International
Other
Eligibility
4 Years to 12 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2036
U.S. locations
1
States / cities
The Woodlands, Texas
Source: ClinicalTrials.gov public record
Updated Mar 25, 2026 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Down Syndrome Memantine Follow-up Study

NCT02304302
View directory record Official record
Conditions
Down Syndrome, Intellectual Disability
Interventions
Memantine, Placebo
Drug
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
15 Years to 32 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

An Interactive Informed Consent and Education Program for Pregnant Women

NCT01176019
View directory record Official record
Conditions
Pregnancy, Down Syndrome
Interventions
Information about Prenatal Screening and Diagnosis
Device
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 7, 2014 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Parents as the Primary Sexuality Educators for Their Young Adults With Down Syndrome

NCT03135236
View directory record Official record
Conditions
Down Syndrome, Intellectual Disability, Sexuality, Parent-Child Relations
Interventions
Parent training
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
Not listed
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Park Ridge, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 4, 2024 · Synced Oct 4, 2026, 2:41 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Digital Dysmorphology Project

NCT02651493
View directory record Official record
Conditions
Down Syndrome
Interventions
photographs
Device
Lead sponsor
Kevin Cleary
Other
Eligibility
Up to 18 Years
Enrollment
750 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2023
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 1, 2023 · Synced Oct 4, 2026, 2:41 AM EDT
Completed No phase listed Observational

Prenatal Screening for Down Syndrome With DNAFirst

NCT01966991
View directory record Official record
Conditions
Trisomy 21, Trisomy 18, Trisomy 13, Monosomy X
Interventions
Not listed
Lead sponsor
Women and Infants Hospital of Rhode Island
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Feb 22, 2018 · Synced Oct 4, 2026, 2:41 AM EDT
Completed No phase listed Observational

Expanded Noninvasive Genomic Medical Assessment: The Enigma Study

NCT02787486
View directory record Official record
Conditions
Down Syndrome, Edwards Syndrome, Patau Syndrome, Klinefelter Syndrome, Turner Syndrome, DiGeorge Syndrome, Chromosome Deletion, Aneuploidy
Interventions
Blood sampling for Laboratory Developed Test (LDT) analysis
Other
Lead sponsor
Progenity, Inc.
Industry
Eligibility
18 Years to 54 Years · Female only
Enrollment
760 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
8
States / cities
Scottsdale, Arizona • Eunice, Louisiana • Brooklyn, New York + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Oct 4, 2026, 2:41 AM EDT
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 2, 2026 · Synced Oct 4, 2026, 2:41 AM EDT
Completed No phase listed Observational

Neurocognitive and Psychosocial Outcomes in Survivors of Childhood Leukemia With Down Syndrome

NCT02859389
View directory record Official record
Conditions
Leukemia, Down Syndrome
Interventions
Not listed
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
Not listed
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 18, 2019 · Synced Oct 4, 2026, 2:41 AM EDT
Completed Not applicable Interventional

The Impact of an 8-week Supported Exercise Program on Fitness and Symptoms in Adolescents With Down Syndrome

NCT03192540
View directory record Official record
Conditions
Down Syndrome
Interventions
Exercise
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
10 Years to 17 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 26, 2022 · Synced Oct 4, 2026, 2:41 AM EDT