Angiotensin-converting enzyme inhibitors and angiotensin receptor blockers as therapeutic options in the treatment of renal cancer: A meta-analysis

Aims: Angiotensin-converting enzyme inhibitor (ACEI) and angiotensin receptor blocker (ARB) which have been used in the treatment of cardiovascular diseases, have also been shown to have anti-tumor effects against various cancers that include renal cancer. The aim of current paper was to explore the potential clinical impact of ACEI/ARB inhibitors in renal cancer. Main methods: We used several databases: EMBASE, PubMed and the Cochrane library, to identify clinical studies that assessed the relationship between ACEIs/ARBs treatment and risk of renal cancer incidence or survival of renal cancer patients. The hazard ratio (HR) with 95% confidence intervals were obtained for assessing the relationship between ACEIs/ARBs and renal cancer mortality. Key finding: The HR for the relationship between ASIs use and survival of renal cancer indicated that patients with renal cancer being treated with ACEIs/ARBs had a significantly lower mortality than non-user (HR 0.723, 95% CI 0.568-0.921, p = 0.009). The HR for the relationship between ACEIs use and survival of renal cancer indicated that patients with renal cancer that used ACEIs had a higher mortality than non-users (HR 1.352, 95% CI 0.917-1.991, p = 0.128). The HR for the relationship between ARBs use and survival of renal cancer indicated that patients with renal cancer that used ARBs had a decreased of mortality than non-users (HR 0.818, 95% CI 0.691-0.969, p = 0.02). Significance: This meta-analysis demonstrated that treatment with ACEIs/ARBs may improve renal cancer survival and reduce the mortality of patients with renal cancer.