Immunohistochemical staining showed that FIR and FIRΔexon2 (FIR family), Snai1, and BRG1 expressions were increased but FBW7 and E-cadherin expressions were decreased in human gastric cancers (Fig. 6a, Supplementary Figs. S3 and S4a-c); however, the expression of BRG1 was reduced in some cases (cases 1 and 4 in Fig. 2a; cases 6,8,10,12, and 14 in Supplementary Fig. S3). Here, SNAI1 is linked to gastric cancer.