MUC5AC and neoplasm: MUC5AC was additionally associated with right-sided tumor location (p = 0.01), higher pT (p = 0.0073), more frequent distant metastasis (p = 0.0334), higher tumor grade (p < 0.0001), frequent BRAF mutation (p < 0.0001) and MMR-deficiency (p < 0.0001).