HLA-DPA1 and skin basal cell carcinoma: As previously reported for BCC and SCC, we identified associations in the major histocompatibility complex (MHC) region (rs9271611/HLA-DQA16 in p21.32, and rs9277332/HLA-DPA1 in 6p21.32, rs2507999/HLA-B in 6p21.33) (67,68).