Developmental and Epileptic Encephalopathy 56, also known as epileptic encephalopathy, early infantile, 56, is related to developmental and epileptic encephalopathy. An important gene associated with Developmental and Epileptic Encephalopathy 56 is YWHAG (Tyrosine 3-Monooxygenase/Tryptophan 5-Monooxygenase Activation Protein Gamma). Affiliated tissues include cortex, and related phenotypes are intellectual disability and seizure