Purpose: A meta-analysis was performed to evaluate the prognostic value of neutrophil-lymphocyte ratio (NLR) in patients undergoing potentially curative gastrectomy for cancer (GC).
Methods: Thomson Reuters Web of Science, Ovid MEDLINE(R) and PUBMED databases were searched for relevant articles using search terms neutrophil-lymphocyte ratio (NLR), GC and survival. Articles reporting overall survival (OS), cancer-specific survival and disease-free survival (DFS), in patients undergoing R0 gastrectomy, were studied.
Results: Articles numbering 365 were identified during the preliminary search, and 10 containing 4164 patients were included in the final review. Most patients were > 60 years of age, male (67%) and 2239 (53.8%) had pT3 disease. The number of NLR dichotomization thresholds reported numbered 7, with 2.00 and 3.00 (n = 2) the most common. NLR was associated with poor survival in eight studies with hazard ratios ranging from 1.54 (95% confidence interval (CI) 1.26-1.89) to 2.99 (1.99-4.49). Pooled odds ratio (OR) for OS was 2.31 (1.40-3.83, p = 0.001) and for DFS 2.72 (1.14-6.54, p = 0.020). Four studies presented T-stage data, OR 1.62 (1.33-1.96, p < 0.001).
Conclusion: NLR is an important prognostic indicator associated with both OS and DFS after R0 resection of GC, but the critical level is equivocal.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6061213 | PMC |
| http://dx.doi.org/10.1007/s12029-018-0127-y | DOI Listing |
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