Except for these case reports of rasburicase, the description of chemotherapy use andits outcomes on G6PD-deficient patients are extremely limited in theliterature.3,10 This may be related to the factthat most patients with cancer are never tested for G6PD deficiency or maybe becausechemotherapy in these patients is uneventful, as in the patient described here. Here, G6PD is linked to hyperinsulinemic hypoglycemia, familial, 4.