Xanthine nephropathy during chemotherapy in deficiency of hypoxanthine-guanine phosphoribosyltransferase

G A Gomez, L Stutzman, T M Chu
Archives of Internal Medicine 1978, 138 (6): 1017-9
We describe an episode of obstructive uropathy produced by xanthine precipitation in the tubules of the kidney of a patient with histiocytic lymphoma during intensive chemotherapy, despite allopurinol therapy. Urinary oxypurine-uric acid ratio suggested a subclinical deficiency of hypoxanthine-guanine phosphoribosyltransferase. Results of an assay of this enzyme confirmed the abnormality. Both parents and three brothers of the patient had normal enzyme activity. The continued importance of adequate hydration for patients who receive allopurinol during initial periods of cancer therapy is emphasized.

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