SASH1 and esophageal squamous cell carcinoma: He et al reported that the overexpression of SASH1 inhibits proliferation, invasion and epithelial‐mesenchymal transition (EMT) in hepatocarcinoma cells.14SASH1 overexpression in lung cancer cells also inhibits the migration/invasion and the protein expression of cyclin D1, matrix metalloproteinase‐1 (MMP‐1), and MMP‐2.15 However, the tumourigenic roles and mechanisms underlying the down‐regulation of SASH1 in ESCC are still largely unknown.