Pharmacotherapy
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Multicenter Study
Impact of CYP2C19 Genotype and Drug Interactions on Voriconazole Plasma Concentrations: A Spain Pharmacogenetic-Pharmacokinetic Prospective Multicenter Study.
Voriconazole, a first-line agent for the treatment of invasive fungal infections, is mainly metabolized by cytochrome P450 (CYP) 2C19. A significant portion of patients fail to achieve therapeutic voriconazole trough concentrations, with a consequently increased risk of therapeutic failure. ⋯ These results suggest the potential clinical utility of using CYP2C19 genotype-guided voriconazole dosing to achieve concentrations in the therapeutic range in the early course of therapy. Larger studies are needed to confirm the impact of pharmacogenetics on voriconazole pharmacokinetics.