PKD2 and cholangiocarcinoma: Then, in this study, we analyzed the lncRNA and mRNA microarray data, integrated with miRNAs via miRanda (http://www.microrna.org/), to sort the potential lncRNA–miRNA–mRNA regulatory network implicated in CCA pathogenesis, which finally identified a possible ceRNA network (lnc-PKD2-2-3/miR-328/GPAM).