TGFB1 and hepatocellular carcinoma: With a random-effect model, a shorter OS was observed in tissues of HCC patients with high TGF-β1 expression compared with those with low TGF-β1 expression (pooling HR = 2.44, 95% CI = 1.40–4.27, p = 0.002; Table 4, Supplementary Figure 6).