By contrast, we found no association between CCDC6 levels and CCA from GEPIA or acquired TCGA data: OS (p=0.64), DFS (p=0.76), DSS (p=0.98), PFI (p=0.93), DFI (p=0.15) (Figure 2I, J and Supplementary Figure 1C). This evidence concerns the gene CCDC6 and cholangiocarcinoma.