Metabolism and Disposition of Verinurad, a Uric Acid Reabsorption Inhibitor, in Humans

Drug Metabolism and Disposition : the Biological Fate of Chemicals
Caroline A LeeMichael Gillen

Abstract

Verinurad (RDEA3170) is a second generation selective uric acid reabsorption inhibitor for the treatment of gout and asymptomatic hyperuricemia. Following a single oral solution of 10-mg dose of [14C]verinurad (500 μCi), verinurad was rapidly absorbed with a median time to occurrence of maximum observed concentration (Tmax) of 0.5 hours and terminal half-life of 15 hours. In plasma, verinurad constituted 21% of total radioactivity. Recovery of radioactivity in urine and feces was 97.1%. Unchanged verinurad was the predominant component in the feces (29.9%), whereas levels were low in the urine (1.2% excreted). Acylglucuronide metabolites M1 (direct glucuronidation) and M8 (glucuronidation of N-oxide) were formed rapidly after absorption of verinurad with terminal half-life values of approximately 13 and 18 hours, respectively. M1 and M8 constituted 32% and 31% of total radioactivity in plasma and were equimolar to verinurad on the basis of AUC ratios. M1 and M8 formed in the liver were biliary cleared with complete hydrolysis in the GI tract, as metabolites were not detected in the feces and/or efflux across the sinusoidal membrane; M1 and M8 accounted for 29.2% and 32.5% of the radioactive dose in urine, respectively. In vitro...Continue Reading

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Citations

Nov 18, 2018·Drug Metabolism and Disposition : the Biological Fate of Chemicals·Chun YangCaroline A Lee
Feb 14, 2019·Clinical Pharmacology in Drug Development·Zancong ShenMichael Gillen
Jul 3, 2021·Pharmaceutics·Péter TátraiPéter Krajcsi

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