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ClinicalTrials.gov public records Last synced May 22, 2026, 2:45 AM EDT

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Showing 1–13 of 13 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Smith-Magenis Syndrome Clear all
Completed Phase 3 Interventional Results available
View directory record Official record
Conditions
Sleep Disorders
Interventions
Circadin 2/5/10 mg, Placebo
Drug
Lead sponsor
Neurim Pharmaceuticals Ltd.
Industry
Eligibility
2 Years to 17 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
18
States / cities
Phoenix, Arizona • Miami Lakes, Florida • Orange City, Florida + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2024 · Synced May 22, 2026, 2:45 AM EDT
Completed Phase 2Phase 3 Interventional
View directory record Official record
Conditions
Smith-Magenis Syndrome, Circadian
Interventions
tasimelteon, placebo
Drug
Lead sponsor
Vanda Pharmaceuticals
Industry
Eligibility
3 Years to 65 Years
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
4
States / cities
Santa Monica, California • Baltimore, Maryland • Chevy Chase, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 17, 2022 · Synced May 22, 2026, 2:45 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Circadian Rhythm Sleep Disorders, Non-24 Hour Sleep-Wake Disorder, Autism Spectrum Disorder, Smith-Magenis Syndrome
Interventions
tasimelteon
Drug
Lead sponsor
Vanda Pharmaceuticals
Industry
Eligibility
3 Years to 17 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 20, 2024 · Synced May 22, 2026, 2:45 AM EDT
Not listed No phase listed Observational
View directory record Official record
Conditions
Smith Magenis Syndrome
Interventions
Not listed
Lead sponsor
Vanda Pharmaceuticals
Industry
Eligibility
6 Years to 50 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 24, 2016 · Synced May 22, 2026, 2:45 AM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Developmental Delay Disorders, Chromosome Deletion, Mental Retardation, Sleep Disorders, Circadian Rhythm, Self Injurious Behavior
Interventions
dTR Melatonin (NIH CC PDS), Phototherapy (Bright Light), Melatonin CR
Drug · Device
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
3 Years to 45 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 11, 2019 · Synced May 22, 2026, 2:45 AM EDT
Active, not recruiting No phase listed Observational
View directory record Official record
Conditions
Smith-Magenis Syndrome (SMS)
Interventions
Not listed
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
1 Month to 115 Years
Enrollment
593 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2001
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced May 22, 2026, 2:45 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
RAI1 Gene 17P11.2 Deletion+Duplication
Interventions
Electroencephalography/Polysomnography (EEG/PSG), Skin Biopsy, Blood draw
Diagnostic Test · Procedure
Lead sponsor
Baylor College of Medicine
Other
Eligibility
1 Month to 80 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 24, 2025 · Synced May 22, 2026, 2:45 AM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Genetic Obesity, Obesity, Obesity Due to Melanocortin 4 Receptor Deficiency
Interventions
Setmelanotide
Drug
Lead sponsor
Rhythm Pharmaceuticals, Inc.
Industry
Eligibility
6 Years and older
Enrollment
213 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
43
States / cities
Birmingham, Alabama • Chandler, Arizona • Mesa, Arizona + 37 more
Source: ClinicalTrials.gov public record
Updated Aug 17, 2023 · Synced May 22, 2026, 2:45 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Williams Syndrome, Angelman Syndrome, Prader-Willi Syndrome, Shprintzen Syndrome, Smith-Magenis Syndrome, DiGeorge Syndrome, Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
0 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1999
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced May 22, 2026, 2:45 AM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Sleep Disturbances in Smith-Magenis Syndrome
Interventions
Data collection of sleep disturbances in individuals with SMS
Other
Lead sponsor
Vanda Pharmaceuticals
Industry
Eligibility
3 Years to 65 Years
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2030
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced May 22, 2026, 2:45 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Chromosome Disorders
Interventions
Melatonin, Enviro-light artificial light box
Dietary Supplement · Device
Lead sponsor
Oregon Health and Science University
Other
Eligibility
3 Years to 85 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2009
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced May 22, 2026, 2:45 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Fragile X Syndrome, Angelman Syndrome, Prader-Willi Syndrome, Dup15Q Syndrome, Duchenne Muscular Dystrophy, Phelan-McDermid Syndrome, Rett Syndrome, Smith Magenis Syndrome, Williams Syndrome, Turner Syndrome, Klinefelter Syndrome, Chromosome 22q11.2 Deletion Syndrome, Tuberous Sclerosis, Down Syndrome
Interventions
Parent-Infant Inter(X)action Intervention (PIXI)
Behavioral
Lead sponsor
RTI International
Other
Eligibility
Up to 99 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced May 22, 2026, 2:45 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Microdeletion Syndromes, Trisomy 21, Trisomy 18, Trisomy 13, Sex Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
Not listed
Enrollment
216 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
2
States / cities
San Carlos, California • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 25, 2019 · Synced May 22, 2026, 2:45 AM EDT