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Xanthine oxidase catalyzes the conversion of xanthine to uric acid

Xanthine is on the left, and urate is on the right. Overzealous use of allopurinol can lead to xanthine stones. (Source: Wikimedia Commons. Created by J3D3 on February 4, 2015. Creative Commons Attribution-Share Alike 4.0 International license.)

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  • Choreoathetosis
  • Dystonia
  • Gout
  • Hyperuricemia
  • Intellectual disability
  • Renal stones