MUC1 and colorectal carcinoma: No evidence of publication bias was found by Begg’s test in the overall meta-analysis of MUC1 expression with CRC node metastasis (p = 0.729), distant metastasis (p = 0.851) or Duke’s stage (p = 0.453), while Egger’s test revealed possible publication bias in the analysis of node metastasis (p = 0.000) but no bias in the analysis of distant metastasis (p = 0.811) or Duke’s stage (p = 0.729).