The clinicopathological and prognostic value of programmed death-ligand 1 in colorectal cancer: a meta-analysis
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X. Ni [1] ; X. Sun [1] ; D. Wang [1] ; Y. Chen [1] ; Y. Zhang [1] ; W. Li [1] ; L. Wang [1] ; J. Suo [1]
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[1] First Hospital of Jilin University
First Hospital of Jilin University
China
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- Localización: Clinical & translational oncology, ISSN 1699-048X, Vol. 21, Nº. 5 (May), 2019, págs. 674-686
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Introduction Programmed death-ligand 1 (PD-L1) is reportedly expressed in colorectal tumors. However, the prognostic role of PD-L1 in colorectal cancer (CRC) remains controversial. Therefore, we performed a meta-analysis to investigate the clinicopathological and prognostic impact of PD-L1 in CRC.
Methods A comprehensive search in PubMed, Embase, the Cochrane Library, Web of Science and the ClinicalTrials.gov for publications about PD-L1 expression in colorectal cancer was done. The correlation between PD-L1 expression and clinicopathological features or survival outcomes was analyzed by odds ratios (OR) or hazard ratios (HR), at 95% confidence intervals (CI).
Results The results show that the pooled HR of (1.34, 95% CI 1.02–1.65, p = 0.01) indicated the association of PD-L1 expression with overall survival (OS) in CRC patients. Meanwhile, the expression of PD-L1 was positively correlated with the lymph node metastasis (OR: 0.70, 95% CI 0.51–0.95, p = 0.00), gender (OR: 0.86, 95% CI 0.76–0.98, p = 0.05) and tumor location (OR: 1.39, 95% CI 1.14–1.71, p = 0.12).
Conclusions These results suggest that high expression of PD-L1 is associated with low OS in CRC. High PD-L1 expression may act as a negative factor for patients with CRC and help to identify patients suitable for anticancer therapy.
