Encephalitis, Acute, Infection-Induced 12, also known as encephalopathy, acute, infection-induced, susceptibility to, 12, is related to acute necrotizing encephalitis and familial acute necrotizing encephalopathy. An important gene associated with Encephalitis, Acute, Infection-Induced 12 is RNH1 (Ribonuclease/Angiogenin Inhibitor 1). Affiliated tissues include brain and liver.