Delineating the Molecular Spectrum and the Clinical, Imaging and Neuronal Phenotype of Chopra-Amiel-Gordon Syndrome

The purpose of this study is to establish the longitudinal natural history of individuals with confirmed or suspected Chopra-Amiel-Gordon Syndrome (CAGS) to learn more about the range of symptoms, changes in the structure of the brain seen on imaging, and learning difficulties that individuals with this disorder may experience. The investigators will obtain medical history, family history, MRI records, patient photographs, genetic test results, neurobehavioral and quality of life questionnaires from individuals with confirmed or suspected CAGS at annual research visits. Participants may also complete standardized research neurobehavioral assessments, research EEGs, and sample collections at each visit. This data will be maintained on a secure research database. Samples collected will be used for functional testing and the generation of iPSC cell lines, for neuronal reprogramming and phenotyping.