DCDC2 and intrahepatic cholangiocarcinoma: To investigate the molecular mechanism by which DCDC2 exhibits its promoting effects on ICC progression, the RNA-seq dataset of Xenograft derived from Lenti-vector/Lenti-DCDC2 stable cells was analyzed by Gene Set Enrichment Analysis (GSEA), as well as the dataset of TCGA-CHOL classified by DCDC2-High or DCDC2-Low expression was also analyzed.