Purine-Pyrimidine Metabolic Disorder, also known as inborn errors of purine-pyrimidine metabolism, is related to dihydropyrimidine dehydrogenase deficiency and lesch-nyhan syndrome. An important gene associated with Purine-Pyrimidine Metabolic Disorder is HPRT1 (Hypoxanthine Phosphoribosyltransferase 1), and among its related pathways/superpathways are Metabolism and Metabolism of nucleotides. Related phenotypes are renal/urinary system and homeostasis/metabolism