text: <unk> , also known as xanthine oxidase deficiency, is a rare genetic disorder causing the accumulation of xanthine. It is caused by a deficiency of the enzyme xanthine oxidase.
  It was first formally characterized in 1954.
option_0: Xanthinuria
option_1: Lipiduria
option_2: Cystinuria
option_3: Glucosuria
option_4: Beeturia
option_5: Hypocitraturia
option_6: Trimethylaminuria
option_7: Aminoaciduria