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ClinicalTrials.gov public records Last synced May 21, 2026, 6:32 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Fragile X Syndrome Clear all
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Fragile X Syndrome (FXS)
Interventions
Paper and Pencil Informed Consent, Digital Informed Consent Tool
Other
Lead sponsor
RTI International
Other
Eligibility
12 Years to 40 Years
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 6, 2019 · Synced May 21, 2026, 6:32 PM EDT
Recruiting Phase 2 Interventional
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
Low dose of MRM-3379, Middle Dose of MRM-3379, High dose of MRM-3379, Placebo, Low dose of MRM-3379 Open-Label
Drug
Lead sponsor
Mirum Pharmaceuticals, Inc.
Industry
Eligibility
13 Years to 45 Years · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
15
States / cities
Phoenix, Arizona • Irvine, California • Orange, California + 12 more
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 2 Interventional
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
Placebo, RO4917523 0.5 mg, RO4917523 1.5 mg
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
14 Years to 50 Years
Enrollment
185 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
20
States / cities
Phoenix, Arizona • Long Beach, California • Sacramento, California + 17 more
Source: ClinicalTrials.gov public record
Updated Jul 10, 2016 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
STX107
Drug
Lead sponsor
Seaside Therapeutics, Inc.
Industry
Eligibility
18 Years to 50 Years · Male only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 7, 2010 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
AFQ056, Placebo, Language Intervention
Drug · Other
Lead sponsor
Elizabeth Berry-Kravis
Other
Eligibility
32 Months to 6 Years
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
14
States / cities
Davis, California • Denver, Colorado • New Haven, Connecticut + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2023 · Synced May 21, 2026, 6:32 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy, Fragile X Syndrome
Interventions
Follicle Aspiration
Procedure
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 5, 2013 · Synced May 21, 2026, 6:32 PM EDT
Withdrawn Phase 2 Interventional
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
Sulindac (HLX-0201), dose strength 1, Sulindac (HLX-0201), dose strength 2, Placebo, Gaboxadol (HLX-0206)
Drug
Lead sponsor
Healx Limited
Industry
Eligibility
13 Years to 40 Years · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
7
States / cities
Aurora, Colorado • Miami, Florida • Atlanta, Georgia + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 7, 2022 · Synced May 21, 2026, 6:32 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Intellectual Disability, Neurodevelopmental Disorders, Autism Spectrum Disorder, Down Syndrome, Fragile X Syndrome, Cri-du-Chat Syndrome, De Lange Syndrome, Mental Retardation, X-Linked, Prader-Willi Syndrome, Rubinstein-Taybi Syndrome, Trisomy 13 Syndrome, WAGR Syndrome, Williams Syndrome
Interventions
PACE Program
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
376 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
2
States / cities
Fayetteville, Arkansas • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced May 21, 2026, 6:32 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Fragile X Syndrome, Autism Spectrum Disorder, Autistic Disorder, Asperger Syndrome
Interventions
Alpha Auditory Entrainment, Sham
Other
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
5 Years to 10 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced May 21, 2026, 6:32 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Fragile X-Associated Tremor/Ataxia Syndrome, Fragile X Premutation Carriers
Interventions
Memantine, Placebo
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
30 Years to 80 Years
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
2
States / cities
Sacramento, California • Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced May 21, 2026, 6:32 PM EDT
Completed Not applicable Interventional Results available
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
minocycline hydrochloride, Placebo
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
42 Months to 16 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Fragile X-associated Tremor/Ataxia Syndrome
Interventions
Allopregnanolone
Drug
Lead sponsor
Randi J. Hagerman, MD
Other
Eligibility
50 Years to 85 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2018 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 2Phase 3 Interventional
View directory record Official record
Conditions
Fragile X Syndrome, Fragile X Mental Retardation Syndrome, Mental Retardation, X Linked, Genetic Diseases, X-Linked, Trinucleotide Repeat Expansion, Fra(X) Syndrome, Intellectual Disability, FXS, Neurobehavioral Manifestations, Sex Chromosome Disorders
Interventions
Placebo Medication, Metformin
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
6 Years to 25 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jan 16, 2025 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 3 Interventional
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
ZYN002 - transdermal gel, Placebo
Drug
Lead sponsor
Zynerba Pharmaceuticals, Inc.
Industry
Eligibility
3 Years to 29 Years
Enrollment
215 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
18
States / cities
Phoenix, Arizona • Culver City, California • Irvine, California + 15 more
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced May 21, 2026, 6:32 PM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Telomeric 22Q13 Monosomy Syndrome, Tuberous Sclerosis, Hamartoma Syndrome, Multiple, Fragile X Syndrome, Angelman Syndrome, Rett Syndrome, Chromosome 15Q, Partial Deletion, Creatine Deficiency, X-linked
Interventions
Functional Behavioral Training (FBT), Positive Parenting Strategies-Treatment as Usual
Behavioral · Other
Lead sponsor
Rush University Medical Center
Other
Eligibility
2 Years to 12 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Fragile X Syndrome, Autism Spectrum Disorders
Interventions
Acamprosate
Drug
Lead sponsor
Indiana University
Other
Eligibility
5 Years to 17 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 29, 2019 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
5-Hydroxytryptophan, Ergoloid Mesylates, Matching placebo for Ergoloid mesylates, Matching placebo for 5-Hydroxytryptophan
Drug
Lead sponsor
Elizabeth Berry-Kravis
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 2Phase 3 Interventional Results available
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
ZYN002 - Cannabidiol Transdermal Gel, Placebo Transdermal Gel
Drug · Other
Lead sponsor
Zynerba Pharmaceuticals, Inc.
Industry
Eligibility
3 Years to 17 Years
Enrollment
212 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
17
States / cities
Phoenix, Arizona • Sacramento, California • Denver, Colorado + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2022 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 1 Interventional
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
donepezil
Drug
Lead sponsor
Stanford University
Other
Eligibility
14 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 12, 2012 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 3 Interventional
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
arbaclofen, Placebo
Drug
Lead sponsor
Seaside Therapeutics, Inc.
Industry
Eligibility
5 Years to 11 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
28
States / cities
Phoenix, Arizona • Long Beach, California • Sacramento, California + 24 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2013 · Synced May 21, 2026, 6:32 PM EDT
Not yet recruiting Phase 2 Interventional
View directory record Official record
Conditions
Aggressive Behavior in Fragile X Syndome
Interventions
SRX246, Placebo
Drug
Lead sponsor
Azevan Pharmaceuticals
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
3
States / cities
Sacramento, California • Chicago, Illinois • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
STX209, Placebo
Drug
Lead sponsor
Seaside Therapeutics, Inc.
Industry
Eligibility
6 Years to 40 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
12
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 9 more
Source: ClinicalTrials.gov public record
Updated May 5, 2013 · Synced May 21, 2026, 6:32 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
placebo, oxytocin 24IU, oxytocin 48IU
Drug
Lead sponsor
Stanford University
Other
Eligibility
13 Years to 29 Years · Male only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 17, 2020 · Synced May 21, 2026, 6:32 PM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
STX209
Drug
Lead sponsor
Seaside Therapeutics, Inc.
Industry
Eligibility
6 Years to 40 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
11
States / cities
Phoenix, Arizona • Los Angeles, California • Sacramento, California + 8 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2013 · Synced May 21, 2026, 6:32 PM EDT