I just became a registered nurse, and my ten-year-old son is infant-like, has frequent meltdowns, and cannot stand without support. He is missing a piece of DNA (chromosome 9q22.2) but we are unsure if it made him disabled. He has a diagnosis of severely multiply impaired, paucity of white brain matter, partial agenesis of the corpus callosum, microcephaly, deformities of the ankle and foot, and Autism.