FGFR4 and hepatocellular carcinoma: To further explore the differences at the gene level among people with different FGFR4 expressions, we divided the HCC patients in TCGA database into two groups, according to FGFR4 gene expression (TPM) of the highest or lowest 25% (93 cases) for futher analysis, and we present the experimental design approach in Figure 2A.