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ClinicalTrials.gov public records Last synced May 21, 2026, 9:41 PM EDT

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Showing 1–3 of 3 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Hyperactivity in Children With Down Syndrome Clear all
Terminated Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Hyperactivity in Children With Down Syndrome, Impulsivity in Children With Down Syndrome
Interventions
Guanfacine Hydrochloride Immediate Release, Placebo
Drug
Lead sponsor
Rachel G. Greenberg, MD, MB, MHS
Other
Eligibility
6 Years to 12 Years
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
14
States / cities
Phoenix, Arizona • Atlanta, Georgia • Chicago, Illinois + 11 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced May 21, 2026, 9:41 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Coronavirus Infection (COVID-19), Pulmonary Arterial Hypertension, Urinary Tract Infections in Children, Hypertension, Pain, Hyperphosphatemia, Primary Hyperaldosteronism, Edema, Hypokalemia, Heart Failure, Hemophilia, Menorrhagia, Insomnia, Pneumonia, Skin Infection, Arrythmia, Asthma in Children, Bronchopulmonary Dysplasia, Adrenal Insufficiency, Fibrinolysis; Hemorrhage, Attention Deficit Hyperactivity Disorder, Multisystem Inflammatory Syndrome in Children (MIS-C), Kawasaki Disease, Coagulation Disorder, Down Syndrome
Interventions
The POP02 study is collecting bodily fluid samples (i.e., whole blood, effluent samples) of children prescribed the following drugs of interest per standard of care:
Drug
Lead sponsor
Duke University
Other
Eligibility
0 Years to 20 Years
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
48
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 40 more
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced May 21, 2026, 9:41 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Down Syndrome, ADHD
Interventions
Quillivant XR, Placebo
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
6 Years to 17 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
4
States / cities
Sacramento, California • Boston, Massachusetts • Cincinnati, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 14, 2025 · Synced May 21, 2026, 9:41 PM EDT