Significant downregulation of the miR-200 family, which consists of miR-141, miR-200a, miR-200b, miR-200c, and miR-429, regulates the expressions of mesenchymal markers ZEB1, ZEB2, TWIST1, TWIST2, Snai1, and Snai2 and promotes EMT in breast cancer (Bockmeyer et al., 2011). This evidence concerns the gene SNAI1 and breast carcinoma.