In the genotype analysis of HLA-DRB1*15:01, *13:02 and *14:03, a nominally lower frequency of the “*15:01/*13:02 or *14:03” genotype in SLE was observed, although a positive association was revealed for the genotype of “*15:01/alleles other than *13:02 or *14:03” (Table 2). Here, HLA-DRB1 is linked to systemic lupus erythematosus.