尿外泌体检测对膀胱癌诊断性能的meta分析

Urinary exosomes as biomarkers for bladder cancer:a diagnostic meta-analysis

目的:外泌体(Exosomes)可由泌尿系统肿瘤细胞直接释放到尿液中,因此检测尿Exosomes在泌尿系统肿瘤的非侵入性诊断和监测方面具有很大的潜力。本研究的目的是系统地评估尿外泌体在膀胱癌中的诊断价值。方法:计算机检索PubMed、Web of Science、Cochrane Library、Embase等数据库,截止到2022年4月1日。数据采用Stata 12.0和Meta-Disc 1.4软件进行统计分析。采用随机效应模型合并分析灵敏度、特异度、阳性似然比、阴性似然比和诊断优势比。通过受试者工作特征(ROC)曲线和曲线下面积(AUC)估计整体检验效能。结果:确定有10篇文章中的26项研究被纳入meta分析,共有1748例患者和1357例健康对照组。合并的灵敏度和特异度分别为0.76(95%CI:0.71~0.80)和0.83(95%CI:0.79~0.86);合并阳性似然比为4.45(95%CI:3.66~5.41),阴性似然比为0.29(95%CI:0.25~0.35),诊断优势比为15.23(95%CI:11.53~20.12)。合并的AUC为0.87(95%CI:0.83~0.89)。亚组分析表明,多分子联合检测对BCa诊断具有较高的准确性。结论:尿外泌体可作为膀胱癌诊断的早期临床筛选和辅助检查。临床仍需进行高质量前瞻性的病例对照研究验证,以推广尿外泌体在早期膀胱癌中的诊断作用。

Objective:Urinary exosomes are outstanding as novel cancer biomarkers with great prospects.Hence,we aimed to summarize the overall diagnostic assessment of urinary exosomes for bladder cancer(Bca).Methods:We searched PubMed,Cochrane Library,Web of Science and Scopus for studies published before April 1st,2022.We applied the software of Meta-Disc 1.4 and Stata 12.0 to the meta-analysis.The pooled sensitivity,specificity,positive and negative likelihood ratios,diagnostic odds ratio,and area under the curve(AUC) were analyzed using random effect model.The overall test efficacy was estimated using the summary ROC curve and the AUC.Results:A total of 10 studies from 26 articles were included in the meta-analysis,with a total of 1748 patients and 1357 controls.The pooled sensitivity and specificity were 0.76(95%CI:0.71-0.80) and 0.83(95%CI:0.79-0.86),respectively.The pooled positive likelihood ratio was 4.45(95%CI:3.66-5.41),negative likelihood ratio was 0.29(95%CI:0.25-0.35),and diagnostic odds ratio was 15.23(95%CI:11.53-20.12).The pooled AUC was 0.87(95%CI:0.83-0.89).Subgroup analyses indicated that the multiple urinary exosomes assays showed high accuracies in diagnosing BCa.Conclusion:The urinary exosomes assays may serve as a potential noninvasive diagnostic tool for the detection of BCa.However,the clinical application of urinary exosomes assays for BCa diagnosis still needs further validation by large prospective studies.