AKT1 and cholangiocarcinoma: These data indicate that: (i) murine cells derived from Akt-YAP driven tumors have phenotypic features of human CCA; (ii) implantation of murine CCA cells results in development of orthotopic tumors which are morphologically and phenotypically similar to human CCA; (iii) the cell lines exhibit aneuploidy and chromosomal instability with upregulation of FOXM1; (iv) the cell lines are YAP-dependent and FOXM1 pharmacologic inhibition causes CCA cell death.