Molybdenum Cofactor Deficiency, Complementation Group C, also known as sulfite oxidase deficiency due to molybdenum cofactor deficiency type c, is related to d-glyceric aciduria and cerebral creatine deficiency syndrome. An important gene associated with Molybdenum Cofactor Deficiency, Complementation Group C is GPHN (Gephyrin), and among its related pathways/superpathways are Metabolism and Metabolism of water-soluble vitamins and cofactors. Affiliated tissues include eye and pons, and related phenotypes are hyperreflexia and hypertonia