CYP2C19 Genotype-Dependent Pharmacokinetic Drug Interaction Between Voriconazole and Ritonavir-Boosted Atazanavir in Healthy Subjects
© 2016, The American College of Clinical Pharmacology..
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 Cmin decreased by 33% (90%CI, 22%-42%) and 39% (90%CI, 28%-49%), respectively, in CYP2C19 EMs, whereas voriconazole Cmax and AUC increased 4.4-fold (90%CI, 3.6-fold to 5.4-fold) and 5.6-fold (90%CI, 4.5-fold to 7.0-fold), respectively, in PMs. Adding voriconazole resulted in a 20%-30% decrease in atazanavir Cmin in both EMs and PMs. Ritonavir exposure was generally unchanged in either population. The safety and tolerability profiles of the combination were comparable with atazanavir/ritonavir and voriconazole administered alone. The most frequent adverse events with voriconazole were visual disturbance and headache. Coadministration of voriconazole and atazanavir/ritonavir is not recommended unless the benefit/risk to the patient justifies the use of the combination.
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2017 |
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Erschienen: |
2017 |
Enthalten in: |
Zur Gesamtaufnahme - volume:57 |
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Enthalten in: |
Journal of clinical pharmacology - 57(2017), 2 vom: 15. Feb., Seite 235-246 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Zhu, Li [VerfasserIn] |
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Links: |
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Anmerkungen: |
Date Completed 16.08.2017 Date Revised 27.11.2017 published: Print-Electronic Citation Status MEDLINE |
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doi: |
10.1002/jcph.798 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
NLM262566818 |
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520 | |a © 2016, The American College of Clinical Pharmacology. | ||
520 | |a 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 Cmin decreased by 33% (90%CI, 22%-42%) and 39% (90%CI, 28%-49%), respectively, in CYP2C19 EMs, whereas voriconazole Cmax and AUC increased 4.4-fold (90%CI, 3.6-fold to 5.4-fold) and 5.6-fold (90%CI, 4.5-fold to 7.0-fold), respectively, in PMs. Adding voriconazole resulted in a 20%-30% decrease in atazanavir Cmin in both EMs and PMs. Ritonavir exposure was generally unchanged in either population. The safety and tolerability profiles of the combination were comparable with atazanavir/ritonavir and voriconazole administered alone. The most frequent adverse events with voriconazole were visual disturbance and headache. Coadministration of voriconazole and atazanavir/ritonavir is not recommended unless the benefit/risk to the patient justifies the use of the combination | ||
650 | 4 | |a Journal Article | |
650 | 4 | |a Research Support, Non-U.S. Gov't | |
650 | 4 | |a HIV/AIDS | |
650 | 4 | |a clinical pharmacology (CPH) | |
650 | 4 | |a drug-drug interactions | |
650 | 4 | |a pharmacogenetics/pharmacogenomics | |
650 | 4 | |a pharmacokinetics and drug metabolism | |
650 | 7 | |a Antifungal Agents |2 NLM | |
650 | 7 | |a Drug Combinations |2 NLM | |
650 | 7 | |a HIV Protease Inhibitors |2 NLM | |
650 | 7 | |a Atazanavir Sulfate |2 NLM | |
650 | 7 | |a 4MT4VIE29P |2 NLM | |
650 | 7 | |a CYP2C19 protein, human |2 NLM | |
650 | 7 | |a EC 1.14.14.1 |2 NLM | |
650 | 7 | |a Cytochrome P-450 CYP2C19 |2 NLM | |
650 | 7 | |a EC 1.14.14.1 |2 NLM | |
650 | 7 | |a Voriconazole |2 NLM | |
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700 | 1 | |a Uy, Jonathan |e verfasserin |4 aut | |
700 | 1 | |a Colbers, Angela |e verfasserin |4 aut | |
700 | 1 | |a Hruska, Matthew W |e verfasserin |4 aut | |
700 | 1 | |a Chung, Ellen |e verfasserin |4 aut | |
700 | 1 | |a Sims, Karen |e verfasserin |4 aut | |
700 | 1 | |a Vakkalagadda, Blisse |e verfasserin |4 aut | |
700 | 1 | |a Xu, Xiaohui |e verfasserin |4 aut | |
700 | 1 | |a van Schaik, Ron H N |e verfasserin |4 aut | |
700 | 1 | |a Burger, David M |e verfasserin |4 aut | |
700 | 1 | |a Bertz, Richard J |e verfasserin |4 aut | |
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