In the mouse model dataset, TPCS cancer cells overexpress the luminal markers Xbp1 and Fgfr3 as well as the basal stem cell markers Itga6 and Cd44, the basal marker Egfr, and the EMT‐related marker Cldn4, suggesting that TPCS are of potential to generate multiple lineages. This evidence concerns the gene CLDN4 and cancer.