has material basis in autosomal recessive disease developmental and epileptic encephalopathy 44 A developmental and epileptic encephalopathy characterized by onset in the first year of life of refractory infantile spasms or myoclonus with developmental stagnation and severe neurologic impairment after seizure onset that has_material_basis_in homozygous or compound heterozygous mutation in the UBA5 gene on chromosome 3q22. disease_ontology DOID:0080424 MIM:617132 DEE44 early infantile epileptic encephalopathy 44 developmental and epileptic encephalopathy autosomal recessive inheritance