Developmental and Epileptic Encephalopathy 28, also known as epileptic encephalopathy, early infantile, 28, is related to hereditary spastic paraplegia 51 and west syndrome, and has symptoms including muscle rigidity and muscle spasticity. An important gene associated with Developmental and Epileptic Encephalopathy 28 is WWOX (WW Domain Containing Oxidoreductase). Affiliated tissues include brain, and related phenotypes are microcephaly and optic atrophy