AURKB and cholangiocarcinoma: In the present study, it observed that the protein and mRNA levels of AURKB were high expression in cholangiocarcinoma cells with high metastasis potential (HCCC9810) and low expression in cholangiocarcinoma cells with low metastasis potential (RBE and Huh28) (Fig. 1A, Additional file 1: Fig. S1A).