ZEB1 and lung carcinoma: Recent findings from Takeyama et al. in lung cancer cells lines demonstrated that among four master epithelial-to-mesenchymal transition (EMT)-inducing genes (ZEB1, SIP1, SNAI1, and SNAI2 (SLUG)) ZEB1 was highly expressed in non-EGFR mutated mesenchymal cell lines whereas EGFR mutated cell lines had low ZEB1 expression and an epithelial phenotype [20].