has material basis in autosomal dominant disease developmental and epileptic encephalopathy 91 disease_ontology MIM:617711 DOID:0080472 A developmental and epileptic encephalopathy characterized by onset of refractory multifocal seizures in the first weeks or years of life, delayed psychomotor development, poor or absent speech, and severe to profound intellectual disability that has_material_basis_in heterozygous mutation in the PPP3CA gene on chromosome 4q24. infantile or early childhood epileptic encephalopathy 1 developmental and epileptic encephalopathy autosomal dominant inheritance