Hyperammonemia in Women with a Mutation at the Ornithine Carbamoyltransferase Locus

Abstract
ORNITHINE carbamoyltransferase deficiency is an X-linked disorder of urea synthesis. Its clinical manifestations — lethargy, vomiting, coma, and cerebral edema — are related to hyperammonemia and hyperglutaminemia. Other laboratory findings include low plasma levels of arginine, citrulline, and urea. Orotic aciduria also occurs commonly during hyperammonemic episodes.1