Open Access

PD‑L1 and PD‑1 expression correlate with prognosis in extrahepatic cholangiocarcinoma

  • Authors:
    • Ke Ma
    • Xin Wei
    • Danfeng Dong
    • Yinying Wu
    • Qianqian Geng
    • Enxiao Li
  • View Affiliations

  • Published online on: April 28, 2017     https://doi.org/10.3892/ol.2017.6105
  • Pages: 250-256
  • Copyright: © Ma et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The present study aimed to investigate the clinicopathological significance of programmed cell death ligand‑1 (PD‑L1) and programmed cell death protein 1 (PD‑1) expression in extrahepatic cholangiocarcinoma (ECC). PD‑L1 and PD‑1 expression was detected by immunohistochemical methods in 70 ECC formalin‑fixed, paraffin‑embedded tissue specimens and 50 para‑carcinoma tissue specimens. The associations of PD‑L1 and PD‑1 expression with clinicopathological characteristics and prognosis of ECC patients were explored. Positive rates of PD‑L1 and PD‑1 expression were increased in ECC tissues compared with those in the corresponding para‑carcinoma tissues. Besides, the expression of PD‑L1 was correlated with the expression of PD‑1 (P<0.05). Statistical analysis revealed that the expression of PD‑L1 and PD‑1 in ECC tissues exhibited no correlation with patient age, sex or histological grade, but was significantly correlated with tumor‑node‑metastasis (TNM) stage and lymphatic metastasis. Univariate analysis demonstrated that PD‑L1 expression, PD‑1 expression, TNM stage and lymphatic metastasis were significantly associated with the survival time of patients. Further multivariate analysis revealed the PD‑L1 expression was an independent prognostic factor of patients with ECC. These preliminary results suggested that PD‑L1 or PD‑1 immunodetection may be a valuable prognostic marker for ECC patients, and that PD‑L1 immunodetection may be used as an independent factor to evaluate the prognosis of ECC patients.
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July-2017
Volume 14 Issue 1

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Ma K, Wei X, Dong D, Wu Y, Geng Q and Li E: PD‑L1 and PD‑1 expression correlate with prognosis in extrahepatic cholangiocarcinoma. Oncol Lett 14: 250-256, 2017
APA
Ma, K., Wei, X., Dong, D., Wu, Y., Geng, Q., & Li, E. (2017). PD‑L1 and PD‑1 expression correlate with prognosis in extrahepatic cholangiocarcinoma. Oncology Letters, 14, 250-256. https://doi.org/10.3892/ol.2017.6105
MLA
Ma, K., Wei, X., Dong, D., Wu, Y., Geng, Q., Li, E."PD‑L1 and PD‑1 expression correlate with prognosis in extrahepatic cholangiocarcinoma". Oncology Letters 14.1 (2017): 250-256.
Chicago
Ma, K., Wei, X., Dong, D., Wu, Y., Geng, Q., Li, E."PD‑L1 and PD‑1 expression correlate with prognosis in extrahepatic cholangiocarcinoma". Oncology Letters 14, no. 1 (2017): 250-256. https://doi.org/10.3892/ol.2017.6105