| Syndrome with significant variations in manifestations even among members of the same family. Some affected individuals have no apparent signs or symptoms or only mild features, while others may have intellectual disability, delayed development and a wide range of physical abnormalities. Seizures are common and autistic spectrum disorder, schizophrenia, aggression, self-injury have been reported. Microcephaly, abnormalities of the eyes, heart, kidneys and brain are also associated features. |