autosomal recessive intellectual developmental disorder neurodevelopmental disorder with poor growth and behavioral abnormalities DOID:0081444 disease_ontology An autosomal recessive intellectual developmental disorder that is characterized by global developmental delay, moderately to severely impaired intellectual development, often with absent speech, and behavioral abnormalities, including hyperactivity, short attention span, and ADHD and that has_material_basis_in homozygous or compound heterozygous mutation in the ATP9A gene on chromosome 20q13. MIM:620242