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Expression of programmed death ligand-1 predicts poor outcome in nasopharyngeal carcinoma

  • Authors:
    • Ying‑Fei Li
    • Jian‑Wu Ding
    • Ling‑Min Liao
    • Zhi‑Lin Zhang
    • Shou‑Sheng Liao
    • Ying Wu
    • Dan‑Yang Zhou
    • An‑Wen Liu
    • Long Huang
  • View Affiliations / Copyright

    Affiliations: Department of Oncology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. China, Department of Ultrasound, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. China, Department of Otorhinolaryngology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. China, Department of Pathology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, P.R. China
    Copyright: © Li et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 378-382
    |
    Published online on: July 13, 2017
       https://doi.org/10.3892/mco.2017.1318
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Abstract

Programmed death ligand‑1 (PD‑L1) is a potentially important tumor immunotherapy target. However, whether PD‑L1 expression is associated with survival in nasopharyngeal carcinoma (NPC) remains controversial. The aim of the present study was to investigate the association between PD‑L1 expression and prognosis in NPC. The expression of PD‑L1 was assessed in tumor specimens from 120 patients with NPC using immunohistochemistry. Staining was evaluated using the H‑score method. The associations between PD‑L1 expression and clinical characteristics and prognosis were analyzed. Overall, 78% of the patients had stage I‑III and 22% had stage IV disease. The estimated 5‑year overall survival (OS) and disease‑free survival (DFS) rates for the entire cohort were 87.5 and 70.1%, respectively. PD‑L1 expression was detected in 85 (71%) patients and was localized to the tumor cells. High tumor expression of PD‑L1 (median H‑score ≥5) was associated with significantly poorer OS (P=0.023) and DFS (P=0.002). Univariate analysis indicated that low PD‑L1 expression was associated with better DFS compared with high PD‑L1 expression (HR=0.163, 95% CI: 0.044‑0.600, P=0.006 for DFS). Multivariate analysis revealed that T stage (HR=8.190, 95% CI: 1.355‑18.152; P=0.023) and PD‑L1 expression level (HR=0.124, 95% CI: 0.031‑0.509; P=0.001) served as independent prognostic factors for DFS. In conclusion, tumor PD‑L1 expression was found to be a significant prognostic factor in NPC, and high PD‑L1 expression may be of prognostic value for recurrence and metastasis following conventional treatments.
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Copy and paste a formatted citation
Spandidos Publications style
Li YF, Ding JW, Liao LM, Zhang ZL, Liao SS, Wu Y, Zhou DY, Liu AW and Huang L: Expression of programmed death ligand-1 predicts poor outcome in nasopharyngeal carcinoma. Mol Clin Oncol 7: 378-382, 2017.
APA
Li, Y., Ding, J., Liao, L., Zhang, Z., Liao, S., Wu, Y. ... Huang, L. (2017). Expression of programmed death ligand-1 predicts poor outcome in nasopharyngeal carcinoma. Molecular and Clinical Oncology, 7, 378-382. https://doi.org/10.3892/mco.2017.1318
MLA
Li, Y., Ding, J., Liao, L., Zhang, Z., Liao, S., Wu, Y., Zhou, D., Liu, A., Huang, L."Expression of programmed death ligand-1 predicts poor outcome in nasopharyngeal carcinoma". Molecular and Clinical Oncology 7.3 (2017): 378-382.
Chicago
Li, Y., Ding, J., Liao, L., Zhang, Z., Liao, S., Wu, Y., Zhou, D., Liu, A., Huang, L."Expression of programmed death ligand-1 predicts poor outcome in nasopharyngeal carcinoma". Molecular and Clinical Oncology 7, no. 3 (2017): 378-382. https://doi.org/10.3892/mco.2017.1318
Copy and paste a formatted citation
x
Spandidos Publications style
Li YF, Ding JW, Liao LM, Zhang ZL, Liao SS, Wu Y, Zhou DY, Liu AW and Huang L: Expression of programmed death ligand-1 predicts poor outcome in nasopharyngeal carcinoma. Mol Clin Oncol 7: 378-382, 2017.
APA
Li, Y., Ding, J., Liao, L., Zhang, Z., Liao, S., Wu, Y. ... Huang, L. (2017). Expression of programmed death ligand-1 predicts poor outcome in nasopharyngeal carcinoma. Molecular and Clinical Oncology, 7, 378-382. https://doi.org/10.3892/mco.2017.1318
MLA
Li, Y., Ding, J., Liao, L., Zhang, Z., Liao, S., Wu, Y., Zhou, D., Liu, A., Huang, L."Expression of programmed death ligand-1 predicts poor outcome in nasopharyngeal carcinoma". Molecular and Clinical Oncology 7.3 (2017): 378-382.
Chicago
Li, Y., Ding, J., Liao, L., Zhang, Z., Liao, S., Wu, Y., Zhou, D., Liu, A., Huang, L."Expression of programmed death ligand-1 predicts poor outcome in nasopharyngeal carcinoma". Molecular and Clinical Oncology 7, no. 3 (2017): 378-382. https://doi.org/10.3892/mco.2017.1318
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