Thus, we examined TGF-β1, SMAD2/3 and its phosphorylated protein (p-SMAD2/3), as well as YAP and its phosphorylated protein (p-YAP) in GC cells to explore their potential involvement in ABL2-mediated EMT, cell migration and invasion, and proliferation. This evidence concerns the gene TGFB1 and gastric cancer.