HLA-B and psoriasis: First, both HLA-B*57:01 and HLA-B*27:05 remain associated with psoriasis after conditioning on C*06:02 (B*57:01 p = 1.43×10−3, OR = 1.45; B*27:05 p = 4.83×10−4, OR = 1.52) and both remain independently associated with psoriasis in our stepwise regression model (Table 2).