TGFB1 and hepatocellular carcinoma: Similarly, with a fixed-effect model in a COX univariate analysis of 2 studies, there was no difference on OS between high and low TGF-β1 expression in urine of HCC patients (pooling HR = 1.29, 95% CI = 0.94–1.75, p = 0.11; Table 3 and Supplementary Figure 3).