Abstract
Background
The neutrophil-to-lymphocyte ratio (NLR) is associated with clinical outcomes of various cancers. This study aimed to evaluate whether pretreatment NLR can be used as a prognostic factor in patients with metastatic renal cell carcinoma (mRCC) receiving targeted therapy.
Methods
In this single-center retrospective study, the Kaplan–Meier method was used to estimate progression-free survival (PFS) and overall survival (OS) of 373 mRCC patients receiving targeted therapy. The survival outcomes of patients with high (≥2.2) and low (<2.2) pretreatment NLRs were compared by log-rank test, and Cox proportional hazard regression model was used to compare OS and PFS between groups.
Results
The overall median PFS and OS times for all 373 patients were 18.4 and 34.3 months, respectively. Patients with high NLRs had significantly shorter median OS (28.8 vs 410 months, P = 0.005) and PFS (15.4 vs 23.9 months, P = 0.001) than those with low NLRs. After adjusting for confounding variables, each unit increase of NLR was associated with a 40 % increase in mortality (hazard ratio [HR] 1.391; 95 % confidence interval [CI] 1.022–1.894; P = 0.036). High NLR was also an independent predictor of poor PFS (HR 1.544; 95 % CI 1.166–2.045; P = 0.002).
Conclusion
Pretreatment NLR may be an independent prognostic factor for mRCC patients who are receiving targeted therapy.
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Acknowledgments
This study was supported in part by grants from the National Natural Science Foundation of China (Grant No. NSFC 81001131).
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G. - M. Zhang and Y. Zhu contribute equally to the work.
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Zhang, GM., Zhu, Y., Gu, WJ. et al. Pretreatment neutrophil-to-lymphocyte ratio predicts prognosis in patients with metastatic renal cell carcinoma receiving targeted therapy. Int J Clin Oncol 21, 373–378 (2016). https://doi.org/10.1007/s10147-015-0894-4
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DOI: https://doi.org/10.1007/s10147-015-0894-4