CYP2C19 Genotype-Dependent Pharmacokinetic Drug Interaction Between Voriconazole and Ritonavir-Boosted Atazanavir in Healthy Subjects

Autor: Li, Zhu, Roger J, Brüggemann, Jonathan, Uy, Angela, Colbers, Matthew W, Hruska, Ellen, Chung, Karen, Sims, Blisse, Vakkalagadda, Xiaohui, Xu, Ron H N, van Schaik, David M, Burger, Richard J, Bertz
Rok vydání: 2016
Předmět:
Zdroj: Journal of clinical pharmacology. 57(2)
ISSN: 1552-4604
Popis: Voriconazole, a broad-spectrum triazole antifungal agent, is metabolized by cytochrome P450 (CYP) 2C19 and, to a lesser extent, by CYP3A. Genetic polymorphism of CYP2C19 not only plays a prominent role in its disposition but may also influence potential drug interactions with CYP450 modulators such as ritonavir. This study assessed 2-way drug interactions of voriconazole added on to ritonavir-boosted atazanavir in both CYP2C19 extensive-metabolizer (EM) and poor-metabolizer (PM) healthy subjects. Each subject received voriconazole alone on days 1-3, followed by a 7-day washout. Atazanavir/ritonavir 300/100 mg once daily was given on days 11-30 and voriconazole on days 21-30. Voriconazole doses were 200 mg (400 mg on days 1 and 21) twice daily and 50 mg (100 mg on days 1 and 21) twice daily for CYP2C19 EM and PM subjects, respectively. On coadministration, voriconazole AUC and C
Databáze: OpenAIRE