This result signifies that the patient has one or two copies of HLA-B*15:02. Patients with this genotype are at increased risk of severe cutaneous adverse reactions, including Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN), with certain aromatic anticonvulsants (e.g., carbamazepine, oxcarbazepine, phenytoin/fosphenytoin). Alternative therapy may be warranted. Please consult a clinical pharmacist for more information.