The expressions of epithelial cell–cell adhesion and polarity markers were assessed in the Norwegian CRC series 1 (TMA1; n = 922, 689 evaluable cases, Table S2) by quantitative fluorescent multiplex immunohistochemistry of ZO‐1, ITGB4, ECAD, and cytokeratins (PanCK) (Fig. 2). Here, ITGB4 is linked to colorectal carcinoma.