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QT/QTc study conducted in Japanese adult healthy subjects: A novel xanthine oxidase inhibitor topiroxostat was not associated with QT prolongation.
- Source :
-
Journal of Clinical Pharmacology . Apr2014, Vol. 54 Issue 4, p446-452. 7p. - Publication Year :
- 2014
-
Abstract
- A QT/QTc study was conducted in compliance with ICH E14 guideline to evaluate the effects of a new xanthine oxidase inhibitor topiroxostat in Japanese healthy subjects. Forty-eight Japanese healthy subjects (males 24; females 24) received a single oral dose of topiroxostat (60 or 180 mg), moxifloxacin (400 mg) or placebo in a single-center, double-blind, four-period crossover design. Fridericia's formula (QTcF = QT/RR0.33) was used as a primary method for QT-interval correction. The mean QTcF was prolonged by moxifloxacin, of which largest time-matched difference from placebo administration was 13.6 milliseconds with 90% confidence interval (CI) of 11.2 and 15.9 milliseconds at 4 hours post-dose. The mean QTcF was hardly affected by either dose of topiroxostat, of which largest time-matched difference from placebo administration was 2.9 milliseconds with 90% CI of 0.6 and 5.3 milliseconds at 4 hours post-dose for 60 mg, and 2.3 milliseconds with 90% CI of 0 and 4.7 milliseconds at 1 hour post-dose for 180 mg. The results were essentially the same in the sex subgroup analysis. Moxifloxacin can be used as a positive control for QT/QTc studies in Japanese subjects; and topiroxostat may not cause QT-interval prolongation in males as well as females. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00912700
- Volume :
- 54
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Journal of Clinical Pharmacology
- Publication Type :
- Academic Journal
- Accession number :
- 94857331
- Full Text :
- https://doi.org/10.1002/jcph.226