Consistent with the previous study in Iranian pediatric patients, HLA-A*11:01 appeared to have protective effect against drug-related-SJS/TEN with an OR of 0.1 (95% CI = 0.008–0.493, p = 0.001), and the most common causative drug in this previous study was beta-lactam antibiotics (Esmaeilzadeh et al., 2019). The gene discussed is HLA-A; the disease is toxic epidermal necrolysis.