HLA-B*1511 is a risk factor for carbamazepine-induced Stevens-Johnson syndrome and toxic epidermal necrolysis in Japanese patients, odds ratio SJS/TEN: 16.3 (p = 0.0004, CI 4.76–55.6). However HLA-B*1502 (which is a common risk-factor in several Asian populations) is no risk factor in Japan (Kaniwa et al., 2010). (n=14 SJS/TEN, n=493).