HLA-DRB1 and systemic lupus erythematosus: The SNPs rs558702 (intronic C2 region) and rs2187668 (human leukocyte antigen (HLA)-DRB1*0301/HLA-DR3 tag SNP) were associated with SLE in the allelic and dominant model (OR = 2.290; 95% CI = 1.579–3.322; p = 9.63 × 10−6 and OR = 2.231; 95% CI = 1.548–3.216; p = 1.33 × 10−5, respectively), whereas rs3135391 (HLA-DRB1*1501/HLA-DR2 tag SNP) was not associated with SLE overall.