HLA-A and toxic epidermal necrolysis: Carriage of HLA‐B*15:02 has been associated with increased risk of CBZ‐induced Stevens–Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) in patients from South‐East Asia while carriage of HLA‐A*31:01 has been associated with increased susceptibility to all phenotypes of CBZ hypersensitivity in European, Japanese and Korean populations.16