HLA-DPB1 and head and neck squamous cell carcinoma: The Chr6:33046667 variant, near HLA-DPB1 (OR (95% CI) = 1.11 (1.07, 1.14), pmeta = 1.32 × 10−8) and rs28360051 near PSORS1C3 (OR (95% CI) = 1.23 (1.14, 1.34), pmeta = 1.91 × 10−7) both increased HNSCC risk in the cross ancestral meta-analysis.