The Snail family of zinc-finger transcription factors comprises Snail1 (Snail), Snail2 (Slug), and Snail3 (Smuc), which have been implicated in the regulatory processes involved in cell movement, both during embryonic development and invasive and migratory properties during tumor metastasis [34,35,36,37]. This evidence concerns the gene SNAI2 and neoplasm.