has material basis in autosomal recessive disease developmental and epileptic encephalopathy developmental and epileptic encephalopathy 84 disease_ontology DOID:0112219 A developmental and epileptic encephalopathy characterized by onset in the first months or years of life of refractory seizures, severely impaired global development, impaired intellectual development, absent speech, and inability to walk that has_material_basis_in homozygous or compound heterozygous mutation in the UGDH gene on chromosome 4p14. DEE84 Jamuar syndrome MIM:618792 early infantile epileptic encephalopathy 84 autosomal recessive inheritance