Prognostic value of pretreatment neutrophil-to-lymphocyte ratio in renal cell carcinoma: a systematic review and meta-analysis

被引:46
|
作者
Shao, Yuan [1 ]
Wu, Bo [2 ]
Jia, Wei [1 ]
Zhang, Zikuan [1 ]
Chen, Qian [1 ]
Wang, Dongwen [1 ,3 ,4 ]
机构
[1] Shanxi Med Univ, Taiyuan 030001, Shanxi, Peoples R China
[2] Shanxi Med Univ, Hosp 1, Dept Urol, Taiyuan 030001, Shanxi, Peoples R China
[3] Chinese Acad Med Sci & Peking Union Med Coll, Natl Canc Ctr, Natl Clin Res Ctr Canc, Canc Hosp, Shenzhen 518116, Peoples R China
[4] Chinese Acad Med Sci & Peking Union Med Coll, Shenzhen Hosp, Shenzhen 518116, Peoples R China
基金
中国国家自然科学基金;
关键词
Inflammation; Neutrophil-lymphocyte ratio; Biomarker; Kidney neoplasms; Prognosis; Survival; Meta-analysis; PREDICTIVE-VALUE; FOLLOW-UP; INFLAMMATION; SURVIVAL; CANCER; IMPACT; SCORE; PROGRESSION; NIVOLUMAB; OUTCOMES;
D O I
10.1186/s12894-020-00665-8
中图分类号
R5 [内科学]; R69 [泌尿科学(泌尿生殖系疾病)];
学科分类号
1002 ; 100201 ;
摘要
BackgroundNumerous studies show that the pretreatment neutrophil-to-lymphocyte ratio (NLR) is associated with the prognosis of patients with RCC. However, their findings are inconsistent, urging us to explore the prognostic value of NLR in RCC patients.MethodsThis study was pre-registered in PROSPERO (CRD42020167131). Two reviewers independently performed a systematical search of PubMed, Web of Science, EMBASE, and Cochrane Library databases for prospective or retrospective cohort studies investigating the prognostic value of pretreatment NLR. Hazard ratios with 95% confidence intervals for overall survival (OS), disease-free survival (DFS), progression-free survival (PFS), cancer-specific survival (CSS), and other useful clinicopathological features were extracted and analyzed with fixed or random-effect models by using Review Manager 5.3 and Stata 12.0 software. Heterogeneity was estimated on the basis of Cochran's Q test and I-2 value. Sensitivity analyses and subgroup analyses were also performed to explore the potential sources of heterogeneity. Publication bias was assessed with funnel plots and precisely assessed by Egger's tests. The quality of the evidence was evaluated in accordance with the Grading of Recommendations Assessment, Development, and Evaluation (GRADE).ResultsOverall, 6461 RCC patients from 24 retrospective studies and 1 prospective study were included. In overall population, elevated pretreatment NLR was associated with poorer OS (pooled HR=1.90, 95% CI=1.56-2.30, p<0.001; I-2 =87%), DFS/PFS (pooled HR=2.09, 95% CI: 1.49-2.94, p<0.001; I-2 =99%), and CSS (pooled HR=2.31, 95% CI: 1.61-3.33, p<0.001; I-2 =14%). Furthermore, this negative association was further confirmed in patients with nonmetastatic and metastatic RCC patients, respectively. We also investigated the predictive role of NLR in metastatic RCC patients treated with immune checkpoint inhibitors (ICIs). The results indicated that the level of NLR was significantly associated with OS (pooled HR=3.92, 95% CI: 2.00-7.69, p<0.001; I-2 =0%) and PFS (pooled HR=2.20, 95% CI: 95% CI: 1.61-3.01, p<0.001; I-2 =20%).ConclusionsThis study demonstrated that elevated pretreatment NLR was significantly associated with poor prognosis of RCC patients. NLR could be helpful as a potential prognostic biomarker to guide clinical decision-making and select individualized treatment strategies for RCC patients.
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页数:14
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