HLA-DRB1 and vitiligo: However, after adjusting for the effect of rs145954018, HLA-DRB1*13:01 was marginally protective against non-vitiligo autoimmunity (Pconditional = 0.05, OR = 0.69, 95% CI: 0.48–1.00), whereas adjusting for the effect of HLA-DRB1*13:01, rs145954018del showed no association (P = 0.88, OR = 1.04, 95% CI: 0.66–1.63) with non-vitiligo autoimmunity.