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2015 ; 9
(ä): 5033-49
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Pharmacokinetics, pharmacodynamics, and tolerability of LC350189, a novel
xanthine oxidase inhibitor, in healthy subjects
#MMPMID26357467
Yoon S
; Shin D
; Lee H
; Jang IJ
; Yu KS
Drug Des Devel Ther
2015[]; 9
(ä): 5033-49
PMID26357467
show ga
INTRODUCTION: LC350189 is a novel selective xanthine oxidase inhibitor under
clinical development for the management of hyperuricemia in gout patients. The
aim of this study was to evaluate the pharmacokinetics, pharmacodynamics, and
tolerability of the drug in healthy subjects. METHODS: A dose-block randomized,
double-blind, active and placebo-controlled, single- and multiple-dosing study
was conducted. A single ascending dose (SAD) study (10-600 mg) and a multiple
ascending dose (MAD) study with once-daily doses (100-800 mg) for 7 days were
conducted. Serial samples of blood and urine for
pharmacokinetics/pharmacodynamics analysis were collected, and tolerability and
adverse events were assessed throughout the study. RESULTS: Sixty-seven and 58
subjects were enrolled in the SAD and MAD studies, respectively. The mean Cmax
and AUClast values increased with increasing doses, and exposure to LC350189 was
dose proportional. The 24-hour mean serum uric acid (Cmean,24) decreased by
8.7%-31.7% (day 1) and 53.5%-91.2% (day 7) from baseline in the SAD and MAD
studies, respectively, and the percentage decrease in Cmean,24 increased with
higher doses. CONCLUSION: LC350189 was well tolerated in the dose range of 10-800
mg. It lowered the serum and urine uric acid levels substantially in this dose
range; the extent of the decrease in the serum uric acid level in the 200 mg dose
group was similar or higher compared to that of febuxostat 80 mg group in the MAD
study. It is expected that LC350189 could be safely administered once daily to
patients with hyperuricemia or gout, leading to a sufficient decrease in uric
acid levels.