Yang et al. [97] found that advanced GC patients with a low TGF-β1 expression often had a favorable OS, while the high levels of TGF-β1 were markedly associated with poor OS, and GC patients with a high TGF-β2 expression had a better OS than that of patients with a low TGF-β2 expression, as determined by Cancer Genome Atlas database analysis. Here, TGFB1 is linked to gastric cancer.