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Showing 1–24 of 113 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Neurodevelopmental Disorders and Developmental Abnormalities Clear all
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 21, 2026, 9:51 AM EDT
Completed No phase listed Observational

Pediatric Patients With Metabolic or Other Genetic Disorders

NCT02769949
View directory record Official record
Conditions
Genetic Disorder, Asperger Disorder, Autism Spectrum Disorder, Fragile X Syndrome, Developmental Delay
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
1 Year to 99 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2025
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Jul 21, 2026, 9:51 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Neurodevelopmental Outcomes in Craniosynostosis Repair

NCT04072783
View directory record Official record
Conditions
Craniosynostoses
Interventions
MRI,DTI, functional MRI
Diagnostic Test
Lead sponsor
University of Arkansas
Other
Eligibility
Up to 4 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Jul 21, 2026, 9:51 AM EDT
Completed No phase listed Observational

Etiology and Early Diagnosis of Neurodevelopmental Disorders

NCT02003170
View directory record Official record
Conditions
Neurodevelopmental Disorders
Interventions
Not listed
Lead sponsor
University of Arkansas
Other
Eligibility
0 Months to 99 Years
Enrollment
576 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2024
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Jul 7, 2024 · Synced Jul 21, 2026, 9:51 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Developmental Delay in Children Exposed During Pregnancy to Either Lamotrigine,Sodium Valproate, or Carbamazepine

NCT01097720
View directory record Official record
Conditions
Autism, Developmental Delay, Birth Defects
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
36 Months to 83 Months
Enrollment
298 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 1, 2010 · Synced Jul 21, 2026, 9:51 AM EDT
Completed Not applicable Interventional Results available

Promotion of Physical Activity in Adolescents With Intellectual and Developmental Disabilities

NCT03684512
View directory record Official record
Conditions
Adolescent Behavior, Intellectual Disability, Down Syndrome, Physical Activity
Interventions
Group Exercise Sessions, Individual Support Sessions, Facebook Group
Behavioral
Lead sponsor
University of Kansas
Other
Eligibility
10 Years to 21 Years
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Lawrence, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 2, 2023 · Synced Jul 21, 2026, 9:51 AM EDT
Completed Phase 2 Interventional

A Safety Study of NNZ-2566 in Patients With Rett Syndrome

NCT01703533
View directory record Official record
Conditions
Rett Syndrome
Interventions
NNZ-2566, Placebo
Drug
Lead sponsor
Neuren Pharmaceuticals Limited
Industry
Eligibility
16 Years to 45 Years · Female only
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
3
States / cities
Birmingham, Alabama • Saint Paul, Minnesota • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 4, 2018 · Synced Jul 21, 2026, 9:51 AM EDT
Enrolling by invitation No phase listed Observational

Intranasal Insulin for Autism Spectrum Disorder in Children and Young Adults Aged 4 to 21 Years

NCT07521371
View directory record Official record
Conditions
Autism Spectrum Disorder, Autism Spectrum Disorder (ASD), Autism Spectrum Disorder High-Functioning, Autism Spectrum Disorder With Absence of Functional Language, Autism Spectrum Disorder With Impaired Functional Language, Autistic Disorder of Childhood Onset With Full Syndrome, Autistic Disorders Spectrum, Autistic Disorder, Autistic Disorder in Children and Adolescents, Neurodevelopmental Disorders, Neurodevelopmental Disorders (NDD), Neurodevelopmental Disorders and Developmental Abnormalities
Interventions
Not listed
Lead sponsor
Healing Hope International
Other
Eligibility
4 Years to 21 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Spring, Texas
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Jul 21, 2026, 9:51 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Sensorimotor and Psychosocial Trajectories in Adolescents With Tic Disorder

NCT06576726
View directory record Official record
Conditions
Tourette Syndrome, Tic Disorder
Interventions
This study involves no intervention.
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
11 Years to 17 Years
Enrollment
351 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2030
U.S. locations
1
States / cities
Nashvile, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Jul 21, 2026, 9:51 AM EDT
Completed No phase listed Observational

Studies of Children With Metabolic and Other Genetic Disorders

NCT00025870
View directory record Official record
Conditions
Genetic Disorder, Metabolic Disease
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
Up to 18 Years
Enrollment
1,090 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 3, 2019 · Synced Jul 21, 2026, 9:51 AM EDT
Completed Not applicable Interventional Results available

North Carolina Genomic Evaluation by Next-generation Exome Sequencing, 2

NCT03548779
View directory record Official record
Conditions
Epilepsy; Seizure, Neuromuscular Diseases, Brain Malformation, Intellectual Disability, Autism Spectrum Disorder, Hypotonia, Inborn Errors of Metabolism, Movement Disorders, Genetic Disease, Development Delay, Chromosome Abnormality, Hearing Loss, Dysmorphic Features, Skeletal Dysplasia, Congenital Abnormality, Microcephaly, Macrocephaly
Interventions
Pre-visit prep, usual care + exome seq
Behavioral · Diagnostic Test
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
0 Years and older
Enrollment
548 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
3
States / cities
Asheville, North Carolina • Chapel Hill, North Carolina • Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated May 12, 2025 · Synced Jul 21, 2026, 9:51 AM EDT
Completed Not applicable Interventional

RCT for Intermittent Versus Continuous Propofol Sedation for Pediatric Brain and Spine MRI Studies

NCT00515359
View directory record Official record
Conditions
Encephalopathy, Developmental Delay and Behavioral Changes, Cord Tumor Compression or Instability, Cord Tethering or Malformation
Interventions
Intermittent Propofol Sedation, Continuous Propofol Sedation
Procedure
Lead sponsor
Corewell Health West
Other
Eligibility
1 Month to 18 Years
Enrollment
276 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Grand Rapids, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 18, 2024 · Synced Jul 21, 2026, 9:51 AM EDT
Not listed Not applicable Interventional

Ready, Set, Go! A Physical Fitness Intervention for Children With Mobility Challenges

NCT04789746
View directory record Official record
Conditions
Cerebral Palsy, Myelomeningocele, Arthrogryposis, Motor Skills Disorders, Gross Motor Development Delay
Interventions
adapted Chicago Run running program
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
6 Years to 18 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Chicago Heights, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 14, 2024 · Synced Jul 21, 2026, 9:51 AM EDT
Not listed Not applicable Interventional

JASPER Early Intervention for Tuberous Sclerosis

NCT03422367
View directory record Official record
Conditions
Tuberous Sclerosis
Interventions
JASPER
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months to 40 Months
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
2
States / cities
Los Angeles, California • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 5, 2020 · Synced Jul 21, 2026, 9:51 AM EDT
Completed No phase listed Observational

Studies in Patients With Tuberous Sclerosis Complex

NCT03276195
View directory record Official record
Conditions
Tuberous Sclerosis Complex
Interventions
Not listed
Lead sponsor
Translational Genomics Research Institute
Other
Eligibility
Not listed
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Nov 28, 2023 · Synced Jul 21, 2026, 9:51 AM EDT
Completed Phase 2 Interventional

A Safety Study of NNZ-2566 in Patients With Fragile X Syndrome

NCT01894958
View directory record Official record
Conditions
Fragile X Syndrome
Interventions
NNZ-2566, Placebo
Drug
Lead sponsor
Neuren Pharmaceuticals Limited
Industry
Eligibility
12 Years to 45 Years · Male only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
17
States / cities
Sacramento, California • Denver, Colorado • Washington D.C., District of Columbia + 14 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2018 · Synced Jul 21, 2026, 9:51 AM EDT
Not listed No phase listed Observational

Brain Development Research Program

NCT00305305
View directory record Official record
Conditions
Brain Disorders, Aicardi Syndrome
Interventions
Not listed
Lead sponsor
University of California, San Francisco
Other
Eligibility
Not listed
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 9, 2023 · Synced Jul 21, 2026, 9:51 AM EDT
Completed No phase listed Observational

The Utility of MRI Scoring to Predict Neurodevelopmental Outcomes in Survivors of Twin-to-Twin Transfusion Syndrome

NCT02249624
View directory record Official record
Conditions
Fetofetal Transfusion
Interventions
Not listed
Lead sponsor
Catherine Cibulskis, MD
Other
Eligibility
Up to 3 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 23, 2024 · Synced Jul 21, 2026, 9:51 AM EDT
Enrolling by invitation Phase 3 Interventional

A Study to Investigate LP352 in Children and Adults With Developmental and Epileptic Encephalopathy (DEE)

NCT06908226
View directory record Official record
Conditions
Developmental and Epileptic Encephalopathy
Interventions
LP352
Drug
Lead sponsor
Longboard Pharmaceuticals
Industry
Eligibility
2 Years to 66 Years
Enrollment
324 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
19
States / cities
Little Rock, Arkansas • Los Angeles, California • Palo Alto, California + 15 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 21, 2026, 9:51 AM EDT
Active, not recruiting No phase listed Observational

Natural History Study of Smith-Magenis Syndrome

NCT00013559
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 21, 2026 · Synced Jul 21, 2026, 9:51 AM EDT
Completed Phase 1 Interventional

Study of the Pharmacokinetics and Safety of Tasimelteon in Children and Adolescents

NCT02776215
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 Jul 21, 2026, 9:51 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

10-Week Physical Activity Program for Mothers of Children With Developmental Disabilities

NCT07182071
View directory record Official record
Conditions
Caregiver Burden
Interventions
Physical Activity Program, Waitlist for Physical Activity Program
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
25 Years to 50 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Jul 21, 2026, 9:51 AM EDT
Completed Phase 2 Interventional Results available

Acamprosate in Youth With Fragile X Syndrome

NCT01300923
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 Jul 21, 2026, 9:51 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Genetics, Brain Structure and Thinking Skills in Autism

NCT01451983
View directory record Official record
Conditions
Autism Spectrum Disorders
Interventions
Not listed
Lead sponsor
The Cleveland Clinic
Other
Eligibility
2 Years to 50 Years
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 13, 2015 · Synced Jul 21, 2026, 9:51 AM EDT