PPFIBP2 and cholangiocarcinoma: Several studies have demonstrated similar findings in different cancer contexts, such as in MG63 cells (osteosarcoma) [41], SW480 cells (colorectal cell line) [42], At-T20 cells (mouse pituitary tumor cells) [43], as well as CCLP-1 and QBC939 cells (Cholangiocarcinoma).