Effects of topiroxostat on the serum urate levels and urinary albumin excretion in hyperuricemic stage 3 chronic kidney disease patients with or without gout.

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Hosoya T, Ohno I, Nomura S, Hisatome I, Uchida S, Fujimori S, Yamamoto T, Hara S

Effects of topiroxostat on the serum urate levels and urinary albumin excretion in hyperuricemic stage 3 chronic kidney disease patients with or without gout.

Clin Exp Nephrol. 2014 Dec;18(6):876-84. doi: 10.1007/s10157-014-0935-8. Epub 2014 Jan 22.

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24448692 [ View in PubMed
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Abstract

BACKGROUND: Topiroxostat, a selective xanthine oxidase inhibitor, shows effective reduction in the serum urate level in hyperuricemic patients with or without gout. The objective of this study was to evaluate the efficacy and safety of topiroxostat in hyperuricemic stage 3 chronic kidney disease patients with or without gout. METHODS: The study design was a 22-week, randomized, multicenter, double-blind study. The enrolled patients were randomly assigned to treatment with topiroxostat 160 mg/day (n = 62) or to the placebo (n = 61). The endpoints were the percent change in the serum urate level, change in the estimated glomerular filtration rate, the urinary albumin-to-creatinine ratio, the proportion of patients with serum urate levels of 356.88 mumol/L or less, blood pressure, and serum adiponectin. RESULTS: After 22 weeks, although the changes in the estimated glomerular filtration rate and blood pressure were not significant, the percent change in the serum urate level (-45.38 vs. -0.08 %, P < 0.0001) and the percent change in urinary albumin-to-creatinine ratio (-33.0 vs. -6.0 %, P = 0.0092) were found to have decreased in the topiroxostat as compared with the placebo. Although the incidence of 'alanine aminotransferase increased' was higher in the topiroxostat, serious adverse event rates were similar in the two groups. CONCLUSION: Topiroxostat 160 mg effectively reduced the serum urate level in the hyperuricemic stage 3 chronic kidney disease patients with or without gout.

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