NEAT1 and cholangiocarcinoma: Ectopic expression of NEAT1 has been reported in many types of cancer including breast cancer (Zhao et al., 2017), thyroid cancer (Li et al., 2017), cholangiocarcinoma (CCA) (Ju et al., 2018), hepatocellular carcinoma (Wang et al., 2017), ovarian cancer (Ding et al., 2017), colorectal cancer (Iguchi et al., 2015), pancreatic cancer (Huang et al., 2017), and osteosarcoma (OS) (Li and Cheng, 2018).