As a general feature, the expression of epithelial genes (e.g. TJP3, TSPAN13, CLDN7 and EPCAM) was positively correlated with the expression of AGR2/3 and the expression of mesenchymal genes (e.g. VIM and MSN) was negatively correlated, with specific correlations according to cancer type. This evidence concerns the gene AGR2 and cancer.