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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT02461459
Other study ID # IRB-P00013585
Secondary ID 1U54NS092090
Status Recruiting
Phase
First received
Last updated
Start date May 2015
Est. completion date December 2026

Study information

Verified date November 2023
Source Boston Children's Hospital
Contact Rajna Filip-Dhima, MS
Phone 617-919-7068
Email Rajna.Filip-Dhima@childrens.harvard.edu
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

The purpose of this study is to characterize the developmental phenotype of ASD and ID and to identify biomarkers using advanced MRI methodology and electrophysiological biomarkers of synaptic function and connectivity predictive of ASD and ID presence and severity in patients with TSC. In addition, this study will be establishing infrastructure for the collection and storage of human bio-specimens, including genetic material, from TSC patients and their family members with ASD.


Description:

Tuberous Sclerosis Complex (TSC) is a multi-system disease that usually exhibits a high variability in clinical findings both among and within families. About 50% of individuals with TSC develop intellectual disability (ID) and/or autism spectrum disorder (ASD). The purpose of this research study is to learn more information about ASD/ID in individuals with TSC through neurobehavioral assessments, electroencephalogram (EEG) data, and magnetic resonance imaging so that ultimately effective treatments and interventions for ASD/ID can be realized. Individuals with TSC will be asked to participate in this study if they are 18 months or older at the time of enrollment and have been diagnosed with suspected or confirmed autism spectrum disorder and/or intellectual disability, as well as healthy controls. Both males and females will be asked to participate. Additionally, to be eligible for study participation, individuals' primary communicative language must be English. The participant and at least one biological parent will be asked to provide biological specimens including DNA and RNA for inclusion in the TSC RDCRN Biorepository. The study involves 3 on site visits over the course of two years. Study visits will vary in length from about 4 hours to 6 hours. Study visits involve a physical exam, medical history questions, and neuropsychological assessments. A subset of participants between the ages of 2 and 11 years old will take part in the EEG portion of the study. At one point during the study, a blood draw will be done for future research studies. Individuals who have a clinically indicated MRI will have an option to provide routine clinical scans for analysis.


Recruitment information / eligibility

Status Recruiting
Enrollment 195
Est. completion date December 2026
Est. primary completion date December 2025
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Months and older
Eligibility Inclusion Criteria: - Meets genetic or clinical diagnostic criteria for TSC (Tuberous Sclerosis), the latter based on current recommendations for diagnostic evaluation, such as physical exam, neuroimaging, and echocardiogram. - Age criteria: over 18 months of age at time of enrollment. - Is diagnosed or suspected to have ASD and/or ID. - Primary communicative language is English Exclusion Criteria: - Has taken an investigational drug as part of another research study, within 30 days prior to study enrollment. - For subjects involved in imaging biomarker assessment: contraindications to 3T MRI scanning, such as metal implants/non-compatible medical devices or medical conditions, including vagus nerve stimulator. - For subjects involved in EEG/ERP biomarker assessment: contraindications to EEG/ERP, such as uncooperative or destructive behaviors preventing lead placement or capture by ERP/VEP equipment. Under age 2 or above age 11 at the time of enrollment. - Unwilling or unable to comply with study procedures and assessments.

Study Design


Locations

Country Name City State
United States University of Alabama at Birmingham Birmingham Alabama
United States Boston Children's Hospital Boston Massachusetts
United States Cincinnati Children's Hospital Medical Center Cincinnati Ohio
United States University of Texas at Houston Houston Texas
United States University of California at Los Angeles Los Angeles California
United States Stanford University Palo Alto California

Sponsors (7)

Lead Sponsor Collaborator
Boston Children's Hospital Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Center for Advancing Translational Sciences (NCATS), National Institute of Neurological Disorders and Stroke (NINDS), National Institutes of Health (NIH), Office of Rare Diseases (ORD), Tuberous Sclerosis Alliance

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Change in ADOS-2 scores at end of study Using standardized composite score for ADOS-2 performed yearly to determine ASD 24 months
Primary Change in SBIS-5 scores or Mullen Scales of Early Learning (MSEL) at end of study Using standardized IQ score from the Stanford-Binet Intelligence Scales Fifth Edition (SBIS-5) or Mullen Scales of Early Learning (MSEL) performed yearly to determine ID 24 months
Primary Change in Fractional anisotropy (FA) at 12 months To determine cerebellum white matter structural integrity, the primary outcome measures will be fractional anisotropy (FA) determined by MRI diffusion tensor imaging (DTI) with tractography at 12 months radial diffusivity (RD), axial diffusivity (AD), and mean diffusivity (MD) of cerebellar fascicles corresponding to the neuroanatomically-defined excitatory and inhibitory projections cerebellar Purkinje neurons, 12 months
Primary Change in fractional anisotropy (FA) at 24 months To determine cerebellum white matter structural integrity, the primary outcome measures will be fractional anisotropy (FA) determined by MRI diffusion tensor imaging (DTI) with tractography at 24 months 24 months
Primary Change in radial diffusivity (RD) at 12 months To determine cerebellum white matter structural integrity, the primary outcome measures will be radial diffusivity (RD) determined by MRI diffusion tensor imaging (DTI) with tractography at 12 months 12 months
Primary Change in radial diffusivity (RD) at 24 months To determine cerebellum white matter structural integrity, the primary outcome measures will be radial diffusivity (RD) determined by MRI diffusion tensor imaging (DTI) with tractography at 24 months 24 months
Primary Change in mean diffusivity (MD) of cerebellar fascicles at 12 months To determine cerebellum white matter structural integrity, the primary outcome measures will be mean diffusivity (MD) of cerebellar fascicles determined by MRI diffusion tensor imaging (DTI) with tractography at 12 months 12 months
Primary Change in mean diffusivity (MD) of cerebellar fascicles at 24 months To determine cerebellum white matter structural integrity, the primary outcome measures will be mean diffusivity (MD) of cerebellar fascicles determined by MRI diffusion tensor imaging (DTI) with tractography at 24 months 24 months
Primary Change in axial diffusivity (AD) at 12 months To determine cerebellum white matter structural integrity, the primary outcome measures will be axial diffusivity (AD) determined by MRI diffusion tensor imaging (DTI) with tractography at 12 months 12 months
Primary Change in axial diffusivity (AD) at 24 months To determine cerebellum white matter structural integrity, the primary outcome measures will be axial diffusivity (AD) determined by MRI diffusion tensor imaging (DTI) with tractography at 24 months 24 months
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