Any early infantile epileptic encephalopathy in which the cause of the disease is a mutation in the SLC1A2 gene. The disease is developmental and epileptic encephalopathy, 41 (MONDO_0014916). Also known as: DEE41, EIEE41, SLC1A2 early infantile epileptic encephalopathy, developmental and epileptic encephalopathy 41, early infantile epileptic encephalopathy caused by mutation in SLC1A2, epileptic encephalopathy, early infantile, 41, epileptic encephalopathy, early infantile, 41; EIEE41, epileptic encephalopathy, early infantile, type 41.