We also evaluated the subcellular location of syncytin 1, CD9, and CD47 with ICC staining, showing that these 3 fusion‐related proteins were expressed mainly in the cytoplasm in control cells and PGCCs (Figure 2B), consistent with the western blotting results (for both HCT116 and LoVo cells). The gene discussed is CD47; the disease is intrahepatic cholangiocarcinoma.