P276 A meta-analysis on the association of febuxostat compared to allopurinol on blood pressure and major adverse cardiac events (MACE) among adult patients with hyperuricemia

Abstract Background Increased uric acid levels have been known to be associated with different cardiovascular and renal diseases. Over the last few years, several studies have examined the role of urate-lowering therapy (ULT) in hypertension and Major Adverse Cardiac Events (MACE) and results are pointing to a potential role of elevated serum uric acid as an emerging independent cardiovascular risk factor. Objective To determine if urate-lowering therapy (Febuxostat vs Allopurinol) has an association on blood pressure and MACE among adult patients with hyperuricemia. Methodology Randomized controlled trials with outcomes of blood pressure, all-cause mortality, myocardial infarction, and stroke were searched through PubMed and Cochrane database. Results Pooled analysis of studies on hyperuricemic patients showed that Febuxostat 40 mg has no significant difference compared with Allopurinol 100/300mg with respect to lowering diastolic (MD -0.56 with 95% CI of -4.28 to 3.15) and systolic blood pressure (MD -0.72 with 95% CI of -4.87 to 6.31). No significant differences were also noted on all-cause mortality (OR 1.21 with 95% CI of 0.35 to 4.12) and myocardial infarction (MI) (OR 1.38 with 95% CI of 0.19 to 9.94). Outcomes on non-fatal stroke were only reported by Becker, et. al (2010) with only 2 events reported in the Febuxostat 80 mg group (0.26%) and no event in the Allopurinol group (CI= 0.082 to 1.155). Conclusion The results of this meta-analysis showed that urate-lowering therapy (Febuxostat vs Allopurinol) has no significant association on blood pressure among adult patients with hyperuricemia. No significant association was also found with respect to all-cause mortality and MI. Outcomes on stroke were inconclusive since only one study reported on its events.