Evidence map›Paper›PMID 41574599›Full record

ArticleMycoses2026

Pharmacokinetic Interaction Between Isavuconazole and Rifabutin in a Real-World Setting.

Sunish Shah, Lloyd Clarke, Tiffany Lee, Leah Georgiades, Brandon J Smith, Raman Venkataramanan, Ryan M Rivosecchi

Abstract read
In one paragraph

Article in Mycoses, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Sunish ShahAntibiotic Management Program, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Lloyd ClarkeAntibiotic Management Program, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Tiffany LeeInsightRX, San Francisco, California, USA.
Leah GeorgiadesDepartment of Pharmacy, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Brandon J SmithAntibiotic Management Program, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
Raman VenkataramananDepartment of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.ORCID https://orcid.org/0000-0003-1893-3290
Ryan M RivosecchiDepartment of Pharmacy, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSince rifabutin has less severe drug interactions, it is preferred over rifampin when administered concomitantly with azole antifungals. However, limited data exist to evaluate this interaction.

methodsThis was a single-centre study of hospitalised patients who received concomitant isavuconazole and rifabutin prior to plasma isavuconazole therapeutic drug monitoring. Isavuconazole was administered at a standard dose of isavuconazonium sulphate 372 mg every 8 h for six doses followed by 372 mg every 24 h.

resultsOf the seven patients included, the median age (range) was 53 years (33-67), 71% (5/7) were solid organ transplant recipients and no patients had underlying cirrhosis. The median (range) corrected 24-h steady-state isavuconazole was 2.7 mg/L (0.7-3.7) and 86% (6/7) had an isavuconazole level > 1 mg/L. The median (range) area under the curve (AUC 24), half-life (T

conclusionThis study demonstrates that isavuconazole trough concentrations are often maintained above 1 mg/L despite patients being on concomitant rifabutin. However, therapeutic drug monitoring is mandatory in this setting. Further research is warranted to confirm these results.

Indexed as

Antifungal AgentsNitrilesPyridinesRifabutinTriazolesAdultAgedDrug InteractionsDrug MonitoringFemaleHumansMaleMiddle AgedAntifungal AgentsisavuconazoleNitrilesPyridinesRifabutinTriazolesisavuconazolerifabutinrifampintherapeutic drug monitoring

Identifiers

PMID41574599
PMCPMC12828710

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.