HLA-A and toxic epidermal necrolysis: HLA-A*31:01 has also been reported to be a carbamazepine-induced SJS/TEN-susceptibility HLA allele in Japanese and European populations (OR = 9.5, P = 1.1 × 10−16 and OR = 15.0, P = 3.5 × 10−8; respectively)7,8.