HLA-DRB1 and psoriasis: Conditional analysis revealed two additional independent loci contributing to psoriasis risk at MICA (MIM 600169, rs201374403, ORPSOfull = 1.65, p = 1.0 × 10−26) and HLA-A (MIM 142800, rs113573479, ORPSOfull = 1.41, p = 2.7 × 10−17), as well as two loci with opposing effects at HLA-C (MIM 142840, rs1793889, ORADfull = 0.6, ORPSOfull = 1.18, p = 1.1 × 10−9) and HLA-DRB1 (MIM 142857, rs28383201, ORADfull = 0.61, ORPSOfull = 1.18, p = 6.5 × 10−9) (Figure 5, Table 3).