A recent study utilized next generation sequencing to examine the blister cells of CBZ-induced SJS/TEN patients identifying a public HLA-B*15:02-restricted αβTCR [complementarity determining region (CDR)3 sequence; TCRα VFDNTDKLI and TCRβ ASSLAGELF] that also recognized structural analogs of CBZ (24). The gene discussed is HLA-B; the disease is toxic epidermal necrolysis.