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Showing 1–24 of 33 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Intellectual Development Assessment Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Resurgence as Choice: Basic and Clinical Studies

NCT03423940
View directory record Official record
Conditions
Problem Behavior, Self-injury, Communication
Interventions
Functional communication training
Behavioral
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
3 Years to 19 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Somerset, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 2, 2024 · Synced Sep 2, 2026, 4:35 AM EDT
Not listed No phase listed Observational

Validation of a Salivary miRNA Diagnostic Test for ASD

NCT05418023
View directory record Official record
Conditions
Autism Spectrum Disorder, Developmental Delay
Interventions
Salivary Collection, Adaptive Assessment, Medical and Demographic questionnaire, Autism Assessment, Intellectual Development Assessment
Other
Lead sponsor
Quadrant Biosciences Inc.
Industry
Eligibility
18 Months to 7 Years
Enrollment
6,604 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
16
States / cities
Santa Ana, California • Atlanta, Georgia • Chicago, Illinois + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 7, 2023 · Synced Sep 2, 2026, 4:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effectiveness of a Parent Training Program for Parents of Children Adopted Internationally

NCT00816621
View directory record Official record
Conditions
Attachment Disorders
Interventions
ABC for Children Adopted Internationally, DEF for Children Adopted Internationally
Behavioral
Lead sponsor
University of Delaware
Other
Eligibility
12 Months to 36 Months
Enrollment
220 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2021
U.S. locations
1
States / cities
Newark, Delaware
Source: ClinicalTrials.gov public record
Updated Jun 1, 2021 · Synced Sep 2, 2026, 4:35 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Improving Treatment for Children With Intellectual and Developmental Disabilities and Problem Behavior in Schools

NCT05445596
View directory record Official record
Conditions
Problem Behavior, Intellectual Disability, Developmental Disorder
Interventions
Functional communication training
Behavioral
Lead sponsor
Western Kentucky University
Other
Eligibility
3 Years to 11 Years
Enrollment
1 participant
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Bowling Green, Kentucky
Source: ClinicalTrials.gov public record
Updated Mar 13, 2023 · Synced Sep 2, 2026, 4:35 AM EDT
Completed No phase listed Observational

DDX3X Syndrome -The Seaver Autism Center for Research and Treatment is Characterizing DDX3X-related Neurodevelopmental Disorders Using Genetic, Medical, and Neuropsychological Measures.

NCT03718910
View directory record Official record
Conditions
DDX3X, Mental Retardation, X-linked 102, Autism Spectrum Disorder
Interventions
Not listed
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
2 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Completed Not applicable Interventional Results available

Written Language Intervention for Adults With Intellectual and Developmental Disabilities

NCT05851937
View directory record Official record
Conditions
Intellectual Disability, Developmental Disability
Interventions
Written language intervention
Behavioral
Lead sponsor
Baylor University
Other
Eligibility
18 Years to 26 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Waco, Texas
Source: ClinicalTrials.gov public record
Updated Jan 13, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Active, not recruiting Phase 3 Interventional

Safety and Preliminary Efficacy of TSHA-102 Gene Therapy in Pediatric Females Aged >2 to <4 Years With Rett Syndrome

NCT07480564
View directory record Official record
Conditions
Rett Syndrome
Interventions
TSHA-102
Genetic
Lead sponsor
Taysha Gene Therapies, Inc.
Industry
Eligibility
2 Years to 3 Years · Female only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
3
States / cities
Birmingham, Alabama • Chicago, Illinois • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Withdrawn Phase 4 Interventional

Valbenazine Treatment of Tardive Dyskinesia in Adults With Intellectual/Developmental Disabilities

NCT06107829
View directory record Official record
Conditions
Tardive Dyskinesia, Intellectual Disability, Developmental Disabilities
Interventions
Valbenazine Oral Capsule
Drug
Lead sponsor
Stephen Ruedrich
Other
Eligibility
18 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 23, 2024 · Synced Sep 2, 2026, 4:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Supporting the Health and Well-being of Children With Intellectual and Developmental Disability During COVID-19 Pandemic

NCT04565509
View directory record Official record
Conditions
Covid19, Intellectual Disability, Developmental Disability, Child Development Disorder
Interventions
Standard Messaging, Enhanced Messaging, COVID-19 Testing, Focus Groups, Fuzzy Cognitive Mapping
Behavioral · Diagnostic Test
Lead sponsor
Washington University School of Medicine
Other
Eligibility
5 Years to 90 Years
Enrollment
1,143 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
3
States / cities
Baltimore, Maryland • Kansas City, Missouri • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Recruiting No phase listed Observational

FOXP1 Syndrome: The Seaver Autism Center for Research and Treatment is Characterizing FOXP1-related Neurodevelopmental Disorders Using Genetic, Medical, and Neuropsychological Measures.

NCT03718923
View directory record Official record
Conditions
FOXP1, Mental Retardation With Language Impairment and With or Without Autistic Features, Autism Spectrum Disorder
Interventions
Not listed
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
2 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Congenital Heart Disease: Impact on Learning and Development in Down Syndrome (CHILD-DS)

NCT05312177
View directory record Official record
Conditions
Down Syndrome, Congenital Heart Disease
Interventions
Stanford Binet Intelligence Scales, Fifth Edition, Vineland Adaptive Behavior Scales Third Edition, Peabody Picture Vocabulary Test, Fifth Edition, Expressive Vocabulary Test, Third Edition, Leiter International Performance Scale, Third Edition, Social Communication Questionnaire, Current Form, Aberrant Behavior Checklist, Repetitive Behavior Scale, Revised
Other
Lead sponsor
Carelon Research
Other
Eligibility
60 Months to 155 Months
Enrollment
273 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
13
States / cities
Wilmington, Delaware • Washington D.C., District of Columbia • Atlanta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Jan 10, 2024 · Synced Sep 2, 2026, 4:35 AM EDT
Enrolling by invitation Not applicable Interventional

Community Mobility Plans: Improving Community Participation Through Travel Interventions for Adolescents and Young Adults With Intellectual and Developmental Disabilities

NCT07401563
View directory record Official record
Conditions
Intellectual and Developmental Disability
Interventions
Community Mobility Planning Process (CMPP)
Behavioral
Lead sponsor
Temple University
Other
Eligibility
16 Years to 30 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Recruiting Not applicable Interventional

A Pilot Project to Facilitate Dental Care and Reduce Barriers For Youth With Disabilities

NCT06710483
View directory record Official record
Conditions
Intellectual Disability, Variable
Interventions
Pre-Dental Telehealth (PDT)
Behavioral
Lead sponsor
Boston University
Other
Eligibility
12 Years to 18 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Healthy Lifestyles for People With Intellectual Disabilities

NCT00597948
View directory record Official record
Conditions
Mental Retardation, Developmental Disabilities, Intellectual Disabilities
Interventions
Healthy Lifestyles Curriculum
Behavioral
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 65 Years
Enrollment
131 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Feb 26, 2012 · Synced Sep 2, 2026, 4:35 AM EDT
Recruiting Phase 4 Interventional

Deutetrabenazine Treatment for Tardive Dyskinesia in Intellectual/Developmental Disabilities

NCT06997198
View directory record Official record
Conditions
Tardive Dyskinesia, Intellectual Disability, Developmental Disabilities
Interventions
Deutetrabenazine Oral Capsule
Drug
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years to 89 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Recruiting Not applicable Interventional

Use of a Digital Snapshot to Reduce Use of Restraints During Emergency Department Visits and Improve Experience of Care for PWIDD

NCT06986863
View directory record Official record
Conditions
Intellectual and Developmental Disabilities
Interventions
Always Uniquely Me mobile phone application
Other
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
1,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
New Hyde Park, New York
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Socialization To Enrich Participation & Support Sexuality for Young People With I/DD

NCT06231485
View directory record Official record
Conditions
Knowledge, Behavior
Interventions
STEPS2, STYH
Behavioral
Lead sponsor
City University of New York, School of Public Health
Other
Eligibility
16 Years to 27 Years
Enrollment
856 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 29, 2024 · Synced Sep 2, 2026, 4:35 AM EDT
Enrolling by invitation Not applicable Interventional Accepts healthy volunteers

BEhavioral Health Stratified Treatment (BEST) Study for Youth With Intellectual and/or Developmental Disabilities (IDD)

NCT05520983
View directory record Official record
Conditions
Depression, Anxiety, Transition
Interventions
Adapted Teens Achieving Mastery over Stress (TEAMS) Treatment, Adapted Teens Achieving Mastery over Stress (TEAMS) Prevention, Adapted Competent Adulthood Transition with Cognitive-behavioral & Interpersonal Training (CATCH-IT), Strengthening Families, Virtual psycho-educational discussion groups for caregivers and participants, Maternal Child Health Bureau (MCHB) Care Coordination
Behavioral · Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
13 Years to 20 Years
Enrollment
780 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Sep 2, 2026, 4:35 AM EDT
Completed Not applicable Interventional Results available

Weight Management for Adolescents With IDD

NCT02561754
View directory record Official record
Conditions
Developmental Disabilities, Weight Loss, Body Weight, Down Syndrome, Body Weight Changes, Intellectual Disability
Interventions
Enhanced Stop Light Diet (eSLD), Conventional Diet (CD), Face-to-face (FTF), Technology (TECH), iPad with FaceTime
Dietary Supplement · Behavioral · Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
13 Years to 21 Years
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
2
States / cities
Kansas City, Kansas • Lawrence, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 9, 2023 · Synced Sep 2, 2026, 4:35 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Oral Health Promotion Strategy for Persons With Intellectual/Developmental Disabilities

NCT03834064
View directory record Official record
Conditions
Oral Health
Interventions
Oral health promotion strategy
Behavioral
Lead sponsor
University of Louisville
Other
Eligibility
18 Years to 75 Years
Enrollment
412 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 16, 2023 · Synced Sep 2, 2026, 4:35 AM EDT
Active, not recruiting Not applicable Interventional

Evaluation of Telehealth Services on Mental Health Outcomes for People With Intellectual and Developmental Disabilities

NCT05336955
View directory record Official record
Conditions
Mental Health Conditions, Developmental Disability
Interventions
Intake and quarterly assessment:, Consultation & coping skills coaching:, 24-hour urgent crisis response and intervention:, Service linkages, referrals, outreach, & training:
Other
Lead sponsor
University of New Hampshire
Other
Eligibility
12 Years to 45 Years
Enrollment
339 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Concord, North Carolina
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 2, 2026, 4:35 AM EDT
Not yet recruiting No phase listed Observational

PGx Medication Safety Reviews of Persons With IDD

NCT07092852
View directory record Official record
Conditions
Intellectual Disability, Mild, Intellectual Disability, Mild to Moderate, Developmental Disability
Interventions
Cheek swab for PGx testing, Medication safety review
Other
Lead sponsor
GalenusRx, Inc.
Industry
Eligibility
21 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
2
States / cities
Montverde, Florida • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Sep 2, 2026, 4:35 AM EDT
Completed Not applicable Interventional

Intervention Utilizing a Computerized Cognitive Rehabilitation Program (D-kit/EF1)

NCT05933005
View directory record Official record
Conditions
Mild Intellectual Disability, Borderline Intellectual Functioning
Interventions
D-kit/EF1, Sham group program
Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
4 Years to 8 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 2, 2025 · Synced Sep 2, 2026, 4:35 AM EDT
Completed Not applicable Interventional Results available

Remote Delivery of Weight Management for Adults With IDD

NCT03291509
View directory record Official record
Conditions
Obesity
Interventions
Video Conference Meetings, In-person Meetings, Enhanced Stop Light Diet, Physical Activity
Behavioral
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 6, 2023 · Synced Sep 2, 2026, 4:35 AM EDT