Huang DW, et al. – The scientists examined CD155 expression and its correlations with clinicopathologic data, angiogenesis, and prognosis in the patients with cholangiocarcinoma (CCA). Their investigations displayed that upregulated CD155 correlated with aggressive clinicopathologic characteristics, angiogenesis, and poor prognosis in CCA. In addition, it might be a promising prognostic biomarker for the CCA patients.