Abstract
Voriconazole is a triazole antifungal agent with potent activity against a broad spectrum of pathogens, including Aspergillus and Candida species. In human adults, allelic polymorphisms of CYP2C19 are known to correlate with significant variation in voriconazole plasma concentration. Here, we report an analysis of CYP2C19 phenotype and voriconazole plasma concentrations in children. This retrospective study included 37 children who had voriconazole plasma concentrations measured from May 2006 to June 2011. All had single-nucleotide polymorphisms that define the 3 major CYP2C19 alleles. Patients were classified as follows: normal metabolizers, intermediate metabolizers, poor metabolizers, or hypermetabolizers. The frequencies of the 3 CYP2C19 genetic polymorphisms were similar to those previously reported for Japanese adults. Trough plasma concentrations of voriconazole were significantly higher in the poor metabolizer and intermediate metabolizer groups compared with the normal metabolizer and hypermetabolizer groups (P=0.004). Two patients with high plasma concentrations experienced voriconazole-related severe adverse events (syndrome of inappropriate antidiuretic hormone secretion and cardiac toxicities). The current study suggests that a significant association exists in children between the voriconazole plasma concentration and the CYP2C19 phenotype. Dose adjustment based on CYP2C19 phenotype may be useful during voriconazole therapy, especially for Japanese children, who as a group have a higher incidence of the poor metabolizer and intermediate metabolizer phenotypes.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.