Among the 42 cases of CBZ-induced SJS/TEN, HLA-B*15:02 allele was found in all 24 (100.00%) of Chinese, 4 of 5 (80.00%) Thai patients, and 2 of 13 (15.38%) subjects enrolled from Europe (Supplementary Table 1). The gene discussed is HLA-B; the disease is toxic epidermal necrolysis.