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ClinicalTrials.gov public records Last synced Oct 20, 2026, 6:16 PM EDT

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Showing 49–72 of 212 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Trisomy 21 Clear all
Recruiting Phase 2 Interventional

Down Syndrome Obstructive Sleep Apnea

NCT06043440
View directory record Official record
Conditions
Down Syndrome, Obstructive Sleep Apnea
Interventions
Oxygen
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
5 Years to 18 Years
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
7
States / cities
Los Angeles, California • Ann Arbor, Michigan • Cincinnati, Ohio + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2026 · Synced Oct 20, 2026, 6:16 PM EDT
Not listed No phase listed Observational

Pulmonary Health in Children With Down Syndrome

NCT04398862
View directory record Official record
Conditions
Down Syndrome, Dysphagia, Oropharyngeal
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
3 Years to 18 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 26, 2024 · Synced Oct 20, 2026, 6:16 PM EDT
Completed Not applicable Interventional

Self-Monitoring Shopping Intervention

NCT04020302
View directory record Official record
Conditions
Intellectual Disability, Down Syndrome
Interventions
Self-monitoring shopping intervention
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Hillsborough, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 23, 2020 · Synced Oct 20, 2026, 6:16 PM EDT
Terminated Not applicable Interventional Results available

Down Syndrome Speech Intelligibility Diagnostic Treatment Study

NCT04059354
View directory record Official record
Conditions
Down Syndrome
Interventions
Speech therapy addressing phonology and motor learning
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
7 Years to 16 Years · Male only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 7, 2025 · Synced Oct 20, 2026, 6:16 PM EDT
Completed Not applicable Interventional Results available

Treatment Trial of Subclinical Hypothyroidism in Down Syndrome

NCT01832753
View directory record Official record
Conditions
Down Syndrome, Subclinical Hypothyroidism
Interventions
Levothyroxine
Drug
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
8 Years to 20 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 6, 2019 · Synced Oct 20, 2026, 6:16 PM EDT
Recruiting Not applicable Interventional

Pediatric Down Syndrome Post-Approval Study

NCT06851338
View directory record Official record
Conditions
Pediatric Obstructive Sleep Apnea, Down Syndrome (DS)
Interventions
Hypoglossal Nerve Stimulation
Device
Lead sponsor
Inspire Medical Systems, Inc.
Industry
Eligibility
13 Years to 18 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
6
States / cities
Phoenix, Arizona • Orange, California • Tampa, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 28, 2025 · Synced Oct 20, 2026, 6:16 PM EDT
Completed No phase listed Observational

Non-Invasive Screening for Fetal Aneuploidy: A New Maternal Plasma Marker

NCT00770458
View directory record Official record
Conditions
Down Syndrome (Trisomy 21), Edwards Syndrome (Trisomy 18), Patau Syndrome (Trisomy 13), Turner Syndrome
Interventions
Not listed
Lead sponsor
Sequenom, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
7
States / cities
La Jolla, California • San Diego, California • San Jose, California + 4 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2010 · Synced Oct 20, 2026, 6:16 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 10, 2026 · Synced Oct 20, 2026, 6:16 PM EDT
Completed Phase 1 Interventional

A Study of RG1662 in Individuals With Down Syndrome

NCT01436955
View directory record Official record
Conditions
Down Syndrome
Interventions
Placebo, RG1662
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 30 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
8
States / cities
Phoenix, Arizona • Little Rock, Arkansas • La Jolla, California + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 3, 2015 · Synced Oct 20, 2026, 6:16 PM 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 20, 2026, 6:16 PM EDT
Completed No phase listed Observational

MatErnal BLood IS Source to Accurately Diagnose Fetal Aneuploidy

NCT01122524
View directory record Official record
Conditions
Pregnant Women, Prenatal Care
Interventions
Not listed
Lead sponsor
Verinata Health, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
10,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
11
States / cities
Los Angeles, California • San Francisco, California • Fort Collins, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 10, 2011 · Synced Oct 20, 2026, 6:16 PM EDT
Completed No phase listed Observational

A New Prenatal Blood Test for Down Syndrome

NCT00877292
View directory record Official record
Conditions
Down Syndrome, Trisomy 21
Interventions
Not listed
Lead sponsor
Women and Infants Hospital of Rhode Island
Other
Eligibility
18 Years and older · Female only
Enrollment
4,664 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
12
States / cities
Birmingham, Alabama • Los Angeles, California • New Haven, Connecticut + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2015 · Synced Oct 20, 2026, 6:16 PM EDT
Completed Not applicable Interventional

The Effects of Virtual Zumba® in Individuals With Developmental Disabilities

NCT05198232
View directory record Official record
Conditions
Developmental Disability, Autism Spectrum Disorder, Down Syndrome, Cerebral Palsy
Interventions
Zumba High Tempo, Zumba Low Tempo
Behavioral
Lead sponsor
Auburn University
Other
Eligibility
18 Years to 75 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Auburn, Alabama
Source: ClinicalTrials.gov public record
Updated May 5, 2022 · Synced Oct 20, 2026, 6:16 PM EDT
Completed No phase listed Observational

Non-Invasive Screening for Fetal Aneuploidy

NCT00847990
View directory record Official record
Conditions
Down Syndrome, Edwards Syndrome
Interventions
Maternal blood screening test for fetal aneuploidy
Other
Lead sponsor
Sequenom, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
25
States / cities
Mesa, Arizona • Phoenix, Arizona • Tucson, Arizona + 18 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2011 · Synced Oct 20, 2026, 6:16 PM EDT
Recruiting No phase listed Observational

The ADVANCE (Assay Development and Validation for Pre-Natal and Obstetric Conditions) Study is the Largest U.S.-Based Prospective Study Demonstrating a Circulating Fetal Cell (CFC) Based Approach to Non-invasive Fetal Risk Assessment

NCT07643896
View directory record Official record
Conditions
Pregnant Individuals, Aneuploidy, Down Syndrome (Trisomy 21), 22q11.2 Deletion Syndrome, Trisomy 13, Trisomy 18, Sex Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
BillionToOne Inc.
Industry
Eligibility
Female only
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
9
States / cities
Phoenix, Arizona • Riverside, California • West Covina, California + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2026 · Synced Oct 20, 2026, 6:16 PM EDT
Completed Phase 4 Interventional Results available

Fluoxetine Treatment of Depression in Down Syndrome

NCT05458479
View directory record Official record
Conditions
Down Syndrome, Depression
Interventions
Fluoxetine
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Lexington, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 30, 2025 · Synced Oct 20, 2026, 6:16 PM EDT
Recruiting Phase 2 Interventional

Treatment of Atopic Dermatitis and Alopecia Areata With Abrocitinib in Individuals With Down Syndrome

NCT07242638
View directory record Official record
Conditions
Atopic Dermatitis, Alopecia Areata
Interventions
Abrocitinib
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
12 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 20, 2026, 6:16 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Human Trisome Project

NCT02864108
View directory record Official record
Conditions
Down Syndrome, Trisomy 21
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 89 Years
Enrollment
2,500 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2036
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 24, 2025 · Synced Oct 20, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Balance Bike Training in Down Syndrome

NCT03677245
View directory record Official record
Conditions
Down Syndrome, Postural Balance
Interventions
Strider Balance Bike
Other
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
5 Years to 17 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Flowood, Mississippi
Source: ClinicalTrials.gov public record
Updated Apr 21, 2020 · Synced Oct 20, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Assessing Malleability of Spatial Abilities in Down Syndrome

NCT05332912
View directory record Official record
Conditions
Down Syndrome
Interventions
Spatial Ability Experience
Behavioral
Lead sponsor
University of Alabama, Tuscaloosa
Other
Eligibility
4 Years to 25 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Tuscaloosa, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Oct 20, 2026, 6:16 PM EDT
Completed Not applicable Interventional Results available

Investigating the Experience of Living With Down Syndrome and Obstructive Sleep Apnea Syndrome (Stage 1)

NCT04124471
View directory record Official record
Conditions
Down Syndrome, Obstructive Sleep Apnea
Interventions
Open-ended semi-structured interviews
Behavioral
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
6 Years to 17 Years
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 25, 2023 · Synced Oct 20, 2026, 6:16 PM EDT
Completed No phase listed Observational

Healthy Sleep for Children With Down Syndrome

NCT03922165
View directory record Official record
Conditions
Down Syndrome, Sleep Disordered Breathing
Interventions
Adenotonsillectomy
Procedure
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
3 Years to 13 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
6
States / cities
Ann Arbor, Michigan • Cincinnati, Ohio • Cleveland, Ohio + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2022 · Synced Oct 20, 2026, 6:16 PM EDT
Recruiting No phase listed Observational

Specimen Collection From Pregnant Women at Increased Risk for Fetal Aneuploidy

NCT01429389
View directory record Official record
Conditions
Down Syndrome, Fetal Aneuploidy
Interventions
Not listed
Lead sponsor
Sequenom, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2028
U.S. locations
12
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 6 more
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 20, 2026, 6:16 PM 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 20, 2026, 6:16 PM EDT