CDKN3 and hepatocellular carcinoma: Combined with ONCOMINE database analysis, CDKN3 was identified as a key hub gene closely correlated with the progression of HCC. cBioPortal was used to identify genes closely related to changes in CDKN3, and Kyoto Encyclopedia of Genes and Genomes (KEGG pathway) analysis was used to analyse the mechanism by which CDKN3 may affect the occurrence and development of HCC.