JAC Advance Access published online on December 4, 2003
Journal of Antimicrobial Chemotherapy, doi:10.1093/jac/dkh022
© 2003 by The British Society for Antimicrobial Chemotherapy
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Brief report
1 Infectious Disease Research Program, Center for Bone Marrow
Transplantation, Department of Pediatric Hematology/Oncology, University
Children’s Hospital, Domagkstrasse 9a, 48129 Münster,
Germany
* Corresponding author. E-mail: grollan{at}mednet.uni-muenster.de.
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
Pharmacokinetic interaction between voriconazole
and ciclosporin A following allogeneic bone marrow transplantation
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