Indeed, the expression of some EMT‐TFs, such as Snail1, has been detected not only in tumor cells but also in activated stromal fibroblasts favoring invasiveness and metastasis (Alba‐Castellon et al., 2016; Franci et al., 2006; Rowe et al., 2009), adding complexity to the histological determination of EMT status based on single EMT markers. This evidence concerns the gene SNAI1 and neoplasm.