Evidence mapPaperPMID 40083032Full record

ArticleJournal of pharmaceutical health care and sciences2025

Effect of isavuconazole on the concentration of tacrolimus in a patient with genotype CYP3A5*1/*3: a case report.

Hayato Yokota, Yumiko Akamine, Harumi Hatakeyama, Hideaki Kagaya, Sho Sakamoto, Mitsuru Saito, Masahide Takeda, Kazuhiro Sato, Katsutoshi Nakayama, Masafumi Kikuchi

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Article in Journal of pharmaceutical health care and sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

10 authors.

Hayato YokotaDepartment of Pharmacy, Akita University Hospital, 1-1-1 Hondo, Akita, 010-8543, Japan.
Yumiko AkamineDepartment of Pharmacy, Akita University Hospital, 1-1-1 Hondo, Akita, 010-8543, Japan. yumiko-ai@hos.akita-u.ac.jp.
Harumi HatakeyamaDepartment of Pharmacy, Akita University Hospital, 1-1-1 Hondo, Akita, 010-8543, Japan.
Hideaki KagayaDepartment of Pharmacy, Akita University Hospital, 1-1-1 Hondo, Akita, 010-8543, Japan.
Sho SakamotoDepartment of Respiratory Medicine, Akita University Graduate School of Medicine, Akita, Japan.
Mitsuru SaitoDepartment of Urology, Akita University Graduate School of Medicine, Akita, Japan.
Masahide TakedaDepartment of Respiratory Medicine, Akita University Graduate School of Medicine, Akita, Japan.
Kazuhiro SatoDepartment of Respiratory Medicine, Akita University Graduate School of Medicine, Akita, Japan.
Katsutoshi NakayamaDepartment of Respiratory Medicine, Akita University Graduate School of Medicine, Akita, Japan.
Masafumi KikuchiDepartment of Pharmacy, Akita University Hospital, 1-1-1 Hondo, Akita, 010-8543, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAzole antifungals are the standard treatment for pulmonary mycosis, which may develop during long-term immunotherapy for kidney transplant. Isavuconazole (ISCZ) is a cytochrome P450 (CYP) 3 A inhibitor that has a risk of interacting with the immunosuppressive drug tacrolimus (TAC). We report a case of simple pulmonary aspergilloma with renal dysfunction due to increased trough levels of TAC after ISCZ coadministration. CASE PRESENTATION: A male in his 60s was treated with TAC 3.0 mg/day orally to prevent graft rejection after kidney transplantation. He received a loading dose of ISCZ 600 mg/day orally for two days, followed by a maintenance dose of 200 mg/day for simple pulmonary aspergilloma. The TAC trough concentration increased markedly from 2.4 to 9.9 ng/mL on day 6 after coadministration. The creatinine level increased from 0.70 to 1.08 mg/dL, suggesting renal dysfunction due to TAC. Subsequently, the TAC dosage was reduced, leading to a decreased blood TAC concentration and improved renal function. The patient's genotype was CYP3A5*1/*3.

conclusionsIn the early stages of ISCZ treatment, the blood TAC concentration is higher, and CYP3A5 polymorphisms may partially explain the extent of this interaction. We recommend more careful monitoring of TAC and serum creatinine levels for approximately one week after ISCZ administration.

Indexed as

CYP3A5Drug–drug interactionsIsavuconazoleTacrolimusTherapeutic drug monitoring

Identifiers

PMID40083032
PMCPMC11905633

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