Phenotypic Exploration of Autism Spectrum Disorders Retrospective and Prospective Data

Autism Spectrum Disorders (ASD) are a heterogeneous group of severe developmental abnormalities of the nervous system characterized by deficits in social interaction and verbal and nonverbal communication affecting approximately 1% of the general population. In 5-40% of cases, genetic factors are identified as the cause of these disorders. Despite this unique definition and the advancement of techniques, ASD is still a clinically and genetically heterogeneous condition, as several hundred genes have been identified to date. Primary Objective and Endpoint Primary Objective: Exploration of phenotypic heterogeneity in patients with ASD. Primary endpoint: * Routine Care Clinical Investigation Criteria. * Scores on assessment scales,