As shown in Figure 4D, CCDC25 expression had a strong diagnostic value for HCC (the AUC values of TCGA-LIHC, GSE101685, GSE121248, GSE36376, GSE59259, GSE62232, and GSE76427 were 0.732, 0.823, 0.798, 0.756, 0.875, 0.895, and 0.796). Here, CCDC25 is linked to hepatocellular carcinoma.