SNAI1 and synovial sarcoma: Significantly, expression of Snail family TFs such as Snail and Slug, have been found to correlate positively with reduced E-cadherin expression, increased invasiveness, dedifferentiation status, and aggressiveness in tumor specimens obtained from patients with breast, gastric, colon and hepatocellular carcinoma (HCC), and synovial sarcoma [20–27].