<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.
Xanthinuria
Lipiduria
Cystinuria
Iminoglycinuria
Sialuria
Pentosuria
Uricosuria
Hyperuricosuria