Monarch Disease Ontology entry MONDO_0014598 (developmental and epileptic encephalopathy, 31A) is any developmental and epileptic encephalopathy in which the cause of the disease is a heterozygous mutation in the DNM1 gene. Also known as: DEE31A, DNM1 early infantile epileptic encephalopathy, developmental and epileptic encephalopathy 31A, autosomal dominant.