PPIB and toxic epidermal necrolysis: HLA-B*13:01 was observed in 80.00% (4/5) of patients with dapsone-induced SJS-TEN, but only in 10.00% (4/40) of tolerant controls (OR: 36.00; 95% CI: 3.19–405.89 and p-value = 2.1657 × 10−3) and 11.49% (54/470) of general Thai population (OR: 30.82; 95% CI: 3.38–280.78 and p-value = 9.199 × 10−4).