MUC1 and neoplasm: The putative MUC1 was not associated with gender (pooled OR = 0.59, 95% CI: 0.96–1.75, P = 0.09 fixed-effect), tumor size (pooled OR = 1.29, 95% CI: 0.21–1.65, P = 0.32 random-effect), tumor differentiation (OR = 1.58, 95% CI: 1.13–2.21, P = 0.007 fixed-effect), and clinical stage (OR = 0.80, 95% CI: 0.39–1.67, P = 0.59 random-effect) (Figures 2(a), 2(c), 2(d), and 2(e)).