术前血小板与淋巴细胞比值在上尿路尿路上皮癌患者中预后价值的Meta分析

Prognostic value of platelet-to-lymphocyte ratio in upper tract urothelial carcinoma patients treated with radical nephroureterectomy:A meta-analysis

目的:系统评价根治性肾输尿管切除术前血小板与淋巴细胞比值(PLR)在上尿路尿路上皮癌(upper tract urothelial carcinoma,UTUC)患者中的预后作用。方法:本研究已经在PROSPERO平台预先登记注册(编号:CRD42020186645)。两名研究员独立全面检索Pub Med、WebofScience、EMBASE、Cochrane Library、中国生物医学文献数据库、CNKI和万方数据库中,关于研究根治性肾输尿管切除术(radical nephroureterectomy,RNU)前PLR在UTUC患者中预后价值的文献。检索时间截止至2021年5月。依据纳入和排除标准进行文献筛选、资料提取和质量评估。应用Stata 12.0和Rev Man 5.3软件对相关数据进行荟萃分析。结果:最终纳入来自10篇回顾性研究,共3287例接受RNU治疗的UTUC患者。Meta分析结果显示,升高的术前PLR与UTUC患者术后较差的总体生存率[HR=1.51,95%CI(1.17~1.94),P=0.001]、癌症特异性生存率[HR=1.52,95%CI(1.21~1.90),P<0.001]、无疾病生存率[HR=1.32,95%CI(1.12~1.56),P=0.001]和无进展生存率[HR=1.88,95%CI(1.41~2.52),P<0.001]有关。敏感性分析进一步验证了本研究结果的稳定性与可靠性。结论:作为一项简单且临床易于获取的指标,术前外周血PLR能够有效提高当前预后模型的准确性,并有助于为UTUC患者制定个性化的临床诊疗策略。

Objective:To evaluate the prognostic value of platelet-to-lymphocyte ratio(PLR)in upper tract urothelial carcinoma(UTUC)patients treated with radical nephroureterectomy.Methods:This study was pre-registered in PROSPERO(No.CRD42020186645).Two reviewers independently performed a comprehensive literature search on Pub Med,Web of Science,EMBASE,Cochrane Library databases,China Biology Medicine disc(CBM),Wanfang database,and China National Knowledge Infrastructure(CNKI)from inception to May 2021 for prospective or retrospective cohort studies evaluating the prognostic value of PLR.Literature was analyzed with inclusion and exclusion criteria.Data and other useful clinicopathological features were extracted and analyzed with fixed or random-effect models when applicable.Heterogeneity was assessed on the basis of Cochran’s Q test and I2 statistic.Publication bias was assessed with funnel plots and precisely assessed by Egger′s tests.Results:A total of ten studies involving 3287 UTUC patients were included.Meta-analysis showed that elevated preoperative PLR was associated with worse overall survival(HR=1.51,95%CI 1.17~1.94,P=0.001),cancer specific survival(HR=1.52,95%CI 1.21~1.90,P<0.001),disease free survival(HR=1.32,95%CI 1.12~1.56,P=0.001),and progression free survival(HR=1.88,95%CI 1.41~2.52,P<0.001).Furthermore,the sensitivity analyses validated the stability and reliability of the results.Conclusion:The present meta-analysis demonstrates a significant association between elevated preoperative PLR and poor prognosis of UTUC patients treated with radical nephroureterectomy.Hence,PLR could be helpful as a potential prognostic biomarker to guide clinical decision-making and select individualized treatment strategies for UTUC patients.However,more prospective and large-scale trials are needed to provide more evidence.