The HLA-B*58:01 allele, associated with allopurinol hypersensitivity, was not detected in this patient. Allopurinol can be used per standard dosing guidelines. Patients should be monitored closely for any signs of sensitivity reactions, especially those patients receiving allopurinol (of >300 mg/day), concomitant medications (i.e. thiazide diuretics or penicillin/cephalosporin) or with medical conditions (i.e. chronic kidney disease) that increase the non-genetic risk for allopurinol-related hypersensitivity reactions.