Pyruvate Carboxylase Deficiency, also known as leigh necrotizing encephalopathy due to pyruvate carboxylase deficiency, is related to pyruvate dehydrogenase e1-alpha deficiency and propionic acidemia, and has symptoms including periodic lactate elevations, clonus and seizures. An important gene associated with Pyruvate Carboxylase Deficiency is PC (Pyruvate Carboxylase). The drug Pyruvate has been mentioned in the context of this disorder. Affiliated tissues include liver and brain, and related phenotypes are increased serum lactate and lactic acidosis