<prompt> All of the following statements are true about 6mercaptopurine EXCEPT:It is metabolized by xanthine oxidaseIt does not cause hyperuricemiaIts dose should be reduced when allopurinol is given concurrentlyIt is an active metabolite of azathioprine  <response>: 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. 