All of the following statements are true about 6–mercaptopurine EXCEPT:
All anticancer drugs can result in hyperuricemia by causing the destruction of excess cells.
Azathioprine is an immunosuppressant drug that acts by generating 6-MP.
6-MP is metabolized by xanthine oxidase. Its dose should be reduced when allopurinol is given concurrently.
It is metabolized by xanthine oxidase
It does not cause hyperuricemia
Its dose should be reduced when allopurinol is given  concurrently
It is an active metabolite of azathioprine