Molecular Characterization of Patients Affected by Williams Syndrome and Autism. — WBA  

Autism Spectrum Disorder Clinical Trial

Official title: Molecular Investigation, Using Chromosomal Microarray and Whole Exome Sequencing, of Patients Affected by Williams Beuren Syndrome and Autism Spectrum Disorder

Status Completed

Clinical Trial Summary

Williams Beuren syndrome (WBS) is a multiple malformations/intellectual disability (ID) syndrome caused by 7q11.23 microdeletion and clinically characterized by a typical neurocognitive profile including excessive talkativeness and social disinhibition, often defined as "overfriendliness" and "hypersociability". WBS is generally considered as the polar opposite phenotype to Autism Spectrum Disorder (ASD). Surprisingly, the prevalence of ASD has been reported to be significantly higher in WBS (12%) than in general population (1%). This study aims to investigate the molecular basis of the peculiar association of ASD and WBS. The investigator performed chromosomal microarray analysis and whole exome sequencing in six patients presenting with WBS and ASD, in order to evaluate the possible presence of chromosomal or gene variants considered as pathogenic.

Clinical Trial Description

n/a

Related Conditions & MeSH terms

• Autism Spectrum Disorder
• Autistic Disorder
• Child Development Disorders, Pervasive
• Syndrome
• Williams Beuren Syndrome
• Williams Syndrome

• NCT number: NCT04095585
• Study type: Observational
• Source: Hospices Civils de Lyon
• Status: Completed
• Start date: September 2014
• Completion date: December 2015