Academic Unit of Surgery, School of Medicine, University of Glasgow, Royal Infirmary, Alexandria Parade, Glasgow, G31 2ER, UK.
Unit of Molecular Pathology, School of Cancer Sciences, University of Glasgow, Wolfson Wohl Cancer Research Centre, Garscube Estate, Switchback Road, Glasgow, G61 1QH, UK.
Diagn Pathol. 2023 Apr 15;18(1):46. doi: 10.1186/s13000-023-01325-9.
Hypoxia is a characteristic of many solid tumours and an adverse prognostic factor for cancer therapy. Hypoxia results in upregulation of carbonic anhydrase IX (CAIX) expression, a pH-regulating enzyme. Many human tissue studies have examined the prognostic value of CAIX expression in breast cancer but have yielded inconsistent results. Therefore, a systematic review and meta-analysis was undertaken to assess the prognostic value of CAIX expression for breast cancer patients.
The electronic databases were systematically searched to identify relevant papers. The clinical outcomes included disease-free survival (DFS), recurrence-free survival (RFS) and overall survival (OS) in breast cancer patients. Review Manager version 5.4 was employed to analysis data from 23 eligible studies (containing 8390 patients).
High CAIX expression was associated with poorer RFS [HR = 1.42, 95% CI (1.32-1.51), p < 0.00001], DFS [HR = 1.64, 95% CI (1.34-2.00), p < 0.00001], and OS [HR = 1.48, 95% CI (1.22-1.80), p < 0.0001]. Heterogeneity was observed across the studies. There was an effect of the CAIX antibody employed, scoring methods, and tumour localisation on CAIX expression.
CAIX overexpression was significantly associated with poorer RFS, DFS, and OS in breast cancer patients. However, further work in high quantity tissue cohorts is required to define the optimal methodological approach.
缺氧是许多实体瘤的特征,也是癌症治疗的不利预后因素。缺氧导致碳酸酐酶 IX(CAIX)表达上调,这是一种调节 pH 值的酶。许多人体组织研究都检查了 CAIX 表达在乳腺癌中的预后价值,但结果不一致。因此,进行了系统评价和荟萃分析,以评估 CAIX 表达对乳腺癌患者的预后价值。
系统搜索电子数据库以确定相关文献。临床结局包括乳腺癌患者的无病生存率(DFS)、无复发生存率(RFS)和总生存率(OS)。使用 Review Manager 版本 5.4 分析来自 23 项合格研究(包含 8390 名患者)的数据。
CAIX 高表达与较差的 RFS [HR=1.42,95%CI(1.32-1.51),p<0.00001]、DFS [HR=1.64,95%CI(1.34-2.00),p<0.00001]和 OS [HR=1.48,95%CI(1.22-1.80),p<0.0001]相关。研究之间存在异质性。CAIX 抗体的使用、评分方法和肿瘤定位对 CAIX 表达有影响。
CAIX 过表达与乳腺癌患者的 RFS、DFS 和 OS 较差显著相关。然而,需要在高质量的组织队列中进行进一步的工作,以确定最佳的方法学方法。