has material basis in autosomal recessive disease developmental and epileptic encephalopathy developmental and epileptic encephalopathy 81 disease_ontology A developmental and epileptic encephalopathy characterized by onset in the first days or months of life of severe refractory seizures, little developmental progress, cerebral atrophy, impaired myelination, thin corpus callosum, and progressive leukoencephalopathy that has_material_basis_in homozygous or compound heterozygous mutation in the DMXL2 gene on chromosome 15q21.2. DEE81 MIM:618663 DOID:0112217 early infantile epileptic encephalopathy 81 autosomal recessive inheritance