Monarch Disease Ontology id MONDO_0010396 (developmental and epileptic encephalopathy, 2) is any early infantile epileptic encephalopathy in which the cause of the disease is a mutation in the CDKL5 gene. Also known as: CDKL5 early infantile epileptic encephalopathy, DEE2, EIEE2, developmental and epileptic encephalopathy 2, X-linked dominant, early infantile epileptic encephalopathy caused by mutation in CDKL5, epileptic encephalopathy, early infantile, 2, epileptic encephalopathy, early infantile, type 2.