POSTN and hepatocellular carcinoma: Notably, 6 proteins showed significant DE (FC ≥ 1, FDR < 0.05) and overexpression (FDR < 0.05), including, POSTN and F5 (FC = 1.2, FDR = 1.5e-08; PRO = 34.2%, FDR = < 1e-100; and FC = 1.1, FDR = 2.3e-14; PRO = 16.5%, FDR = 7.8e-4, respectively), which were also identified in the HCC-Gao cohort.