GCDH and hepatocellular carcinoma: Using the GEPIA2 database, we identified five prognosis‐associated genes (TICRR, DDX52, KIF11, GCDH, MRPL45) from 34 candidate DEGs that correlate with the OS and DFS of HCC (Figure S3), the TCGA‐LIHC database further confirms the differential expression of these five genes in HCC (Figure S4).