Additionally, the HLA-A34 allele group, which includes HLA-A*34:02, was carried by 5 of 9 HLA-B*58:01–negative patients in a previously published allopurinol-induced SCAR cohort,3 further highlighting the potential significance of this allele in allopurinol-induced SCARs. This evidence concerns the gene HLA-A and Scarring.