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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 2 Interventional

Safety and Efficacy of AFQ056 in Adult Patients With Fragile X Syndrome

NCT01253629
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
AFQ056, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 45 Years
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
12
States / cities
Phoenix, Arizona • Sacramento, California • Decatur, Georgia + 9 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2020 · Synced Jul 23, 2026, 2:21 PM EDT
Active, not recruiting Not applicable Interventional

Web Intervention for Parents of Youth With Genetic Syndromes (WINGS)

NCT06139172
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 Jul 12, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Long-term, Safety and Tolerability Study of AFQ056 in Adolescent Patients With Fragile X Syndrome (Open-label)

NCT01433354
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
AFQ056
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
12 Years to 18 Years
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
7
States / cities
Sacramento, California • Decatur, Georgia • Chicago, Illinois + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2016 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 4 Interventional Results available

Combining Lovastatin and a Parent-Implemented Language Intervention for Fragile X Syndrome

NCT02642653
View directory record Official record
Conditions
Fragile X Syndrome, Genetic Diseases
Interventions
Lovastatin, Placebo
Drug · Other
Lead sponsor
University of California, Davis
Other
Eligibility
10 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Sep 10, 2019 · Synced Jul 23, 2026, 2:21 PM EDT
Recruiting Phase 1Phase 2 Interventional

ATTUNE: A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Intrathecally-Administered ION440 in Participants With Methyl CpG Binding Protein 2 (MECP2) Duplication Syndrome (MDS)

NCT06430385
View directory record Official record
Conditions
Methyl CpG Binding Protein 2 (MECP2) Duplication Syndrome
Interventions
ION440, Sham procedure
Drug · Procedure
Lead sponsor
Ionis Pharmaceuticals, Inc.
Industry
Eligibility
2 Years to 65 Years · Male only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
8
States / cities
San Diego, California • Aurora, Colorado • Baltimore, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Jul 23, 2026, 2:21 PM 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 24, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 2 Interventional Results available

Double-blind Placebo Controlled Study of Oxytocin in Fragile X Syndrome

NCT01254045
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 Jul 23, 2026, 2:21 PM EDT
Terminated Phase 2 Interventional Results available

Long-term, Safety, Tolerability and Efficacy Study of AFQ056 in Adult Patients With Fragile X Syndrome

NCT01348087
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
AFQ056
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
10
States / cities
Phoenix, Arizona • Sacramento, California • Decatur, Georgia + 7 more
Source: ClinicalTrials.gov public record
Updated May 24, 2016 · Synced Jul 23, 2026, 2:21 PM EDT
Completed No phase listed Observational Results available

An Observational Study Evaluating Anti-Idursulfase Serum Antibody Response in Hunter Syndrome Patients

NCT00882921
View directory record Official record
Conditions
Hunter Syndrome
Interventions
Idursulfase
Biological
Lead sponsor
Shire
Industry
Eligibility
5 Years and older · Male only
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
2
States / cities
Oakland, California • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 7, 2021 · Synced Jul 23, 2026, 2:21 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Evaluation of the Efficacy, Safety, and Tolerability of Sarizotan in Rett Syndrome With Respiratory Symptoms

NCT02790034
View directory record Official record
Conditions
Rett Syndrome
Interventions
Sarizotan low dose, Sarizotan high dose, Placebo
Drug
Lead sponsor
Newron Pharmaceuticals SPA
Industry
Eligibility
4 Years and older
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
5
States / cities
Birmingham, Alabama • San Diego, California • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2021 · Synced Jul 23, 2026, 2:21 PM EDT
Recruiting Phase 1Phase 2 Interventional

NORTHERA (DROXIDOPA) for Dysautonomia in Pediatric Survivors of Menkes Disease

NCT07398508
View directory record Official record
Conditions
Menkes Disease
Interventions
Droxidopa Oral Product, Placebo Control
Drug · Other
Lead sponsor
Stephen G. Kaler
Other
Eligibility
7 Years to 17 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Active, not recruiting Phase 2Phase 3 Interventional

Open Label Extension to Assess the Long-Term Safety and Tolerability of ZYN002 in Children and Adolescents With FXS

NCT03802799
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
ZYN002 - Cannabidiol Transdermal Gel
Drug
Lead sponsor
Zynerba Pharmaceuticals, Inc.
Industry
Eligibility
3 Years to 29 Years
Enrollment
476 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
19
States / cities
Phoenix, Arizona • Culver City, California • Irvine, California + 16 more
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Study of Long Term Safety and Clinical Outcomes of Idursulfase IT and Elaprase Treatment in Pediatric Participants Who Have Completed Study HGT-HIT-094

NCT02412787
View directory record Official record
Conditions
Hunter Syndrome
Interventions
Idursulfase-IT, Elaprase
Drug
Lead sponsor
Shire
Industry
Eligibility
Up to 18 Years · Male only
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2024
U.S. locations
3
States / cities
Oakland, California • Chicago, Illinois • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 18, 2025 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 3 Interventional

A Study of BPN14770 in Male Adults (Aged 18 to 45) With Fragile X Syndrome

NCT05358886
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
BPN14770/ zatolmilast, Placebo
Drug
Lead sponsor
Tetra Discovery Partners
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
17
States / cities
Irvine, California • Orange, California • Sacramento, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 1Phase 2 Interventional Results available

NORTHERA (DROXIDOPA) for Dysautonomia in Adult Survivors of Menkes Disease and Occipital Horn Syndrome

NCT04977388
View directory record Official record
Conditions
Menkes Disease, Occipital Horn Syndrome
Interventions
Droxidopa, Placebo
Drug · Other
Lead sponsor
Stephen G. Kaler, MD
Other
Eligibility
18 Years to 50 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Suspended Phase 2 Interventional

A Study to Assess the Tolerability of a Single Dose of STX107 in Adults With Fragile X Syndrome

NCT01325740
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
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
5
States / cities
Los Angeles, California • Sacramento, California • Aurora, Colorado + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2012 · Synced Jul 23, 2026, 2:21 PM EDT
Completed No phase listed Observational

Biomarker Testing and DNA Collection in Subjects Participating in Protocol 22001

NCT00823368
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 Jul 23, 2026, 2:21 PM EDT
Completed Phase 1Phase 2 Interventional

Phase I/II Study of Retroviral-Mediated Transfer of Iduronate-2-Sulfatase Gene Into Lymphocytes of Patients With Mucopolysaccharidosis II (Mild Hunter Syndrome)

NCT00004454
View directory record Official record
Conditions
Mucopolysaccharidosis II
Interventions
lymphocyte gene therapy
Genetic
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1996
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 2 Interventional

A Study of RO4917523 in Patients With Fragile X Syndrome

NCT01517698
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 Jul 23, 2026, 2:21 PM EDT
Completed Phase 1 Interventional

Clinical Study to Assess the Pharmacokinetics, Safety and Tolerability of Single and Multiple Oral Doses of AFQ056 in Children With Fragile X Syndrome (FXS)

NCT01482143
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
AFQ056
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
3 Years to 11 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
3
States / cities
Sacramento, California • Chicago, Illinois • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 7, 2020 · Synced Jul 23, 2026, 2:21 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Speech-in-noise Perception in Autism and Fragile X

NCT06088589
View directory record Official record
Conditions
Autism Spectrum Disorder, Fragile X Syndrome
Interventions
Mismatch negativity
Behavioral
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
15 Years to 35 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Jul 23, 2026, 2:21 PM EDT
Terminated Phase 1 Interventional

An Exploratory Trial of Ketamine for the Treatment of Rett Syndrome

NCT02562820
View directory record Official record
Conditions
Rett Syndrome
Interventions
Intravenous infusion
Procedure
Lead sponsor
The Cleveland Clinic
Other
Eligibility
5 Years to 25 Years · Female only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 29, 2017 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 3 Interventional Results available

Compassionate Treatment of Patients With Inborn Errors of Bile Acid Metabolism With Cholic Acid

NCT00007020
View directory record Official record
Conditions
Infantile Refsum's Disease, Zellweger Syndrome, Adrenoleukodystrophy, Peroxisomal Disorders, Cholestasis
Interventions
Cholic Acids
Drug
Lead sponsor
Mirum Pharmaceuticals, Inc.
Industry
Eligibility
Not listed
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1992 – 2009
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 2, 2023 · Synced Jul 23, 2026, 2:21 PM EDT
Completed Phase 1 Interventional

Single Dose Pharmacokinetic (PK) Study

NCT03109756
View directory record Official record
Conditions
Angelman Syndrome, Fragile X Syndrome
Interventions
OV101
Drug
Lead sponsor
Healx AI
Industry
Eligibility
13 Years to 17 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017
U.S. locations
2
States / cities
Chicago, Illinois • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 29, 2017 · Synced Jul 23, 2026, 2:21 PM EDT