PDE6D expression levels were strongly upregulated in several HCC patient datasets (“Roessler Liver” [28]; “Roessler Liver 2” [28]; “Wurmbach Liver” [29]; “Chen Liver” [30]; “Mas Liver” [31]; “Archer Liver” [32]) (Figure 1A). Here, PDE6D is linked to hepatocellular carcinoma.