The database showed that both PDGFB and PDGFRB were highly expressed in Cholangiocarcinoma (CHOL), Liver hepatocellular carcinoma (LIHC), Lymphoid Neoplasm Diffuse Large B-cell Lymphoma (DLBC), Pancreatic adenocarcinoma (PAAD and Head and Neck squamous cell carcinoma (HNSC) (Supplementary Fig. 6C-D). Here, PDGFB is linked to cholangiocarcinoma.