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The prognostic role of preoperative circulating neutrophil-lymphocyte ratio in primary bladder cancer patients undergoing radical cystectomy: a meta-analysis.

World Journal of Urology 2018 December 4
BACKGROUND: Systemic inflammatory response (SIR) plays important roles in initiation, promotion and progression of tumor. However, the prognostic role of preoperative circulating neutrophil-lymphocyte ratio (NLR) (known as a marker of SIR) in human primary bladder cancer (BC) undergoing radical cystectomy (RC) remains controversial. Hence, we performed this meta-analysis to better understand the role of preoperative circulating NLR in prognosis prediction for primary BC patients undergoing RC.

METHODS: We searched PubMed, Embase and EBSCO to identify the studies and computed extracted data with STATA 12.0.

RESULTS: A total of 11,945 patients with BC from 18 published studies were incorporated into this meta-analysis. We found that elevated NLR was significantly associated with decreased 3-year and 5-year overall survival (OS), 1-year, 3-year and 5-year recurrence-free survival (RFS), but not with 1-year or 10-year OS, or 10-year RFS in primary BC patients who underwent RC. The results also showed that neoadjuvant chemotherapy (NAC) had a significant impact on the negative prognostic effect of NLR. In addition, high NLR significantly correlated with unfavorable clinicopathological features of BC.

CONCLUSION: Elevated preoperative circulating NLR leads to an unfavorable outcome in primary BC undergoing RC, especially in patients without NAC, implicating that it might be a valuable prognostic index for these patients.

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