TNFRSF1A and hepatocellular carcinoma: Serum TNFR1 showed concomitant upregulation with the HCC stages, and TNFR1 levels increased progressively from the control group (mean, 6.39 μg mL−1; range, 4.65–10.26 μg mL−1) to the early stage group (mean, 10.56 μg mL−1; range, 5.00–32.42 μg mL−1; p = 0.0079 vs control group) and late stage group (mean, 18.06 μg mL−1; range, 6.73–54.77 μg mL−1; p = 0.0179 vs early stage).