SNAI2 and cancer: Much of EMT research has focused on the upregulation of “core” EMT-TFs in cancer cells, such as zinc-finger E-box-binding (ZEB) 1 and 2, snail family transcriptional repressor 1 (SNAI1, SNAIL), snail family transcriptional repressor 2 (SNAI2, SLUG), and twist-related protein (TWIST) 1 and 2 [10].