Comparison of efficacy and safety of urate-lowering therapies for hyperuricemic patients with gout: a meta-analysis of randomized, controlled trials

Objectives To assess the efficacy and safety of the commonly used urate-lowering therapies (ULTs): febuxostat, allopurinol, and lesinurad in hyperuricemic patients with gout. Methods We included all randomized controlled trials (RCTs) that compared ULTs with placebo or head to head. The primary efficacy endpoint was the proportion of subjects achieving the target serum urate (SU) level at month 6. Safety outcomes included total adverse events (AEs), serious AEs, withdrawals due to AEs, and AEs per organ system. A Bayesian network model was used to compare all ULTs with placebo and among themselves. Results Fifteen RCTs were included for the analysis, in which 7968 patients were randomly assigned to take either placebo or one of 11 ULTs: allopurinol, febuxostat 40/80/120/240 mg/day, lesinurad 400 mg/day, lesinurad 200/400/600 mg/day plus allopurinol, and lesinurad 200/400 mg/day plus febuxostat. All ULTs were effective in achieving the target SU level at month 6 compared with placebo (ORs between 26.81 and 1928). Febuxostat 80/120/240 mg/day was superior to allopurinol and well tolerated for urate reduction. And as febuxostat dosage increased, more patients achieved the target SU level. Furthermore, the lesinurad combination with xanthine oxidase inhibitor (XOI) groups had a higher proportion of patients achieving the target SU level than the febuxostat 40 mg/day group (ORs between 2.89 and 9.17), the allopurinol group (ORs between 3.56 and 11.27), or the lesinurad 400 mg/day monotherapy group (ORs between 12.30 and 39.17) but might have a high risk of AEs. Conclusions All ULTs are effective in achieving the target SU level compared with placebo in hyperuricemic patients with gout. Lesinurad in combination with febuxostat or allopurinol is effective in urate lowering, especially for patients with inadequate response to XOI monotherapy.