Developmental and Epileptic Encephalopathy 39 with Leukodystrophy, also known as hypomyelination, global cerebral, is related to early infantile epileptic encephalopathy and hypotonia, and has symptoms including muscle spasticity and seizures. An important gene associated with Developmental and Epileptic Encephalopathy 39 with Leukodystrophy is SLC25A12 (Solute Carrier Family 25 Member 12), and among its related pathways/superpathways are Metabolism and Regulation of expression of SLITs and ROBOs. Affiliated tissues include brain and eye, and related phenotypes are seizure and spasticity