CDH1 and neoplasm: The DT cell line established from this model expresses numerous epithelial biomarkers, including E‐cadherin, claudin 4, and pan‐cytokeratin (Oltean et al., 2008), possesses a cobblestone‐like appearance (Oltean et al., 2006; Somarelli et al., 2013, 2016a), and, when implanted back into syngeneic rats, produces an extremely slow‐growing, indolent tumor (Presnell et al., 1998).