JAC Advance Access originally published online on December 4, 2003
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Journal of Antimicrobial Chemotherapy (2004) 53, 113-114
© 2004 The British Society for Antimicrobial Chemotherapy
Pharmacokinetic interaction between voriconazole and ciclosporin A following allogeneic bone marrow transplantation
Infectious Disease Research Program, Center for Bone Marrow Transplantation, Department of Pediatric Hematology/Oncology, University Childrens Hospital, Domagkstrasse 9a, 48129 Münster, Germany
Received 6 October 2003; accepted 13 October 2003
Voriconazole is a novel antifungal triazole that undergoes extensive oxidative metabolization involving several CYP450 isoenzymes. We report the case of a 14-year-old patient who received voriconazole concomitant with ciclosporin A as secondary antifungal prophylaxis after bone marrow transplantation. Temporary discontinuation of voriconazole due to worsening liver function tests (LFTs) resulted in a sudden drop of ciclosporin A trough levels in blood. Ciclosporin A trough levels returned to baseline following normalization of LFTs and re-institution of voriconazole. This report emphasizes the need for careful monitoring and dose adjustments of ciclosporin A in patients receiving concomitant voriconazole, and in whom voriconazole is discontinued in order to prevent subtherapeutic ciclosporin A levels with the potential consequence of graft-versus-host disease.
Keywords: antifungals, CYP450 isoenzymes, graft-versus-host disease
* Corresponding author. Tel: +49-251-835-2801; Fax: +49-251-835-2804; E-mail: grollan{at}mednet.uni-muenster.de
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