Prague Med. Rep. 2023, 124, 444-448

https://doi.org/10.14712/23362936.2023.34

Demonstration of the Rationale for Therapeutic Drug Monitoring of Isavuconazole: A Case Report with a Lung Transplant Recipient

Eliška Dvořáčková1, Andrea Zajacová2, Jan Havlín3, Eva Klapková4, Robert Lischke3, Ondřej Slanař1, Martin Šíma1

1Institute of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
2Prague Lung Transplant Program, Department of Pneumology, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
3Prague Lung Transplant Program, 3rd Department of Surgery, First Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic
4Department of Medical Chemistry and Clinical Biochemistry, Second Faculty of Medicine, Charles University and University Hospital Motol, Prague, Czech Republic

Received August 23, 2023
Accepted November 15, 2023

Mucormycosis is a rare invasive fungal disease diagnosed in immunocompromised patients, including those with diabetes or iron overload, and in patients treated for hematological malignancies or after transplantation. Isavuconazole is a triazole antifungal effective against Mucorales with good tolerability, but with potential for relatively high interindividual variability in pharmacokinetics. This report demonstrates the case of a lung transplant recipient treated with isavuconasole that exhibits a very long elimination half-life of 159 hours, and discusses the practical implications of this finding for dosage adjustment and need for therapeutic drug monitoring.

Funding

This study was supported by the MH CZ-DRO (University Hospital Motol, Prague, Czech Republic, 00064203), and by the Charles University project Cooperatio (research area PHAR).

References

9 live references