FGFR4 and hepatocellular carcinoma: Then, we divided HCC patients in the TCGA database into High-Exp and Low-Exp groups based on FGFR4 gene expression levels, thoroughly investigated the gene difference between the two groups, re-evaluated the value of FGFR4 in predicting the occurrence and development of HCC, as well as patient prognosis, and revealed some of the pathway mechanisms.