title: The effect of angiotensin system inhibitors (angiotensin-converting enzyme inhibitors or angiotensin receptor blockers) on cancer recurrence and survival: a meta-analysis.
abstract: To assess the current evidence on the potential benefit of angiotensin-converting enzyme inhibitors (ACEIs) or angiotensin receptor blockers (ARBs) on cancer recurrence and survival, we comprehensively searched PubMed, Embase, and the Cochrane Library from their inception to April 2013. Two authors screened out duplicates and independently reviewed the eligibility of each study. We included comparative studies comparing the use and nonuse of ACEIs or ARBs in cancer patients. Primary outcomes were disease-free survival (DFS) and overall survival. We included 11 studies with 4964 participants in the final analysis. The meta-analysis showed that the use of ACEIs or ARBs resulted in a significant improvement in DFS [hazard ratio (HR) 0.60; 95% confidence interval (CI) 0.41-0.87; P=0.007)] and overall survival (HR 0.75; 95% CI 0.57-0.99; P=0.04). Even when cancer stage was classified into low (I/II) or high (III/IV), DFS improvement was applied to both low stage (HR 0.56; 95% CI 0.32-0.96; P=0.04) and high stage (HR 0.59; 95% CI 0.37-0.94; P=0.03). Analysis according to cancer type showed benefits in urinary tract cancer (HR 0.22), colorectal cancer (HR 0.22), pancreatic cancer (HR 0.58), and prostate cancer (HR 0.14), but not in breast cancer and hepatocellular cancer. This meta-analysis provides evidence that the use of ACEIs or ARBs in cancer patients can lead to a 40 and 25% reduction in the risk of cancer recurrence and mortality.
authors.affiliation: aDepartment of Obstetrics and Gynecology, Kangbuk Samsung Hospital bDepartment of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine cDepartment of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul, Republic of Korea.
authors.forename: Taejong
authors.initials: T
authors.lastname: Song
authors.forename: Chel Hun
authors.initials: CH
authors.lastname: Choi
authors.forename: Mi Kyoung
authors.initials: MK
authors.lastname: Kim
authors.forename: Mi-La
authors.initials: ML
authors.lastname: Kim
authors.forename: Bo Seong
authors.initials: BS
authors.lastname: Yun
authors.forename: Seok Ju
authors.initials: SJ
authors.lastname: Seong
mesh_terms: D057911:Angiotensin Receptor Antagonists / Q000627:therapeutic use*; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000627:therapeutic use*; D018572:Disease-Free Survival; D006801:Humans; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis / Q000188:drug therapy* / Q000401:mortality*; D009369:Neoplasms / Q000175:diagnosis / Q000188:drug therapy* / Q000401:mortality*; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D057911:Angiotensin Receptor Antagonists; D000806:Angiotensin-Converting Enzyme Inhibitors