Cited by 105Antifungal resistance and susceptibilityYeasts and Rust Fungi StudiesFungal Plant Pathogen Control

Multilaboratory study of epidemiological cutoff values for detection of resistance in eight Candida species to fluconazole, posaconazole, and voriconazole

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Espinel-Ingroff, A., Pfaller, M. A., Bustamante, B., Canton, E., Fothergill, A., Fuller, J., Gonzalez, G. M., Lass-Flörl, C. +11 more·2014·Antimicrobial Agents and Chemotherapy

Abstract

Although epidemiological cutoff values (ECVs) have been established for Candida spp. and the triazoles, they are based on MIC data from a single laboratory. We have established ECVs for eight Candida species and fluconazole, posaconazole, and voriconazole based on wild-type (WT) MIC distributions for isolates of C. albicans (n=11,241 isolates), C. glabrata (7,538), C. parapsilosis (6,023), C. tropicalis (3,748), C. krusei (1,073), C. lusitaniae (574), C. guilliermondii (373), and C. dubliniensis (162). The 24-h CLSI broth microdilution MICs were collated from multiple laboratories (in Canada, Brazil, Europe, Mexico, Peru, and the United States). The ECVs for distributions originating from ≥6 laboratories, which included ≥95% of the modeled WT population, for fluconazole, posaconazole, and voriconazole were, respectively, 0.5, 0.06 and 0.03 μg/ml for C. albicans, 0.5, 0.25, and 0.03 μg/ml for C. dubliniensis, 8, 1, and 0.25 μg/ml for C. glabrata, 8, 0.5, and 0.12 μg/ml for C. guilliermondii, 32, 0.5, and 0.25 μg/ml for C. krusei, 1, 0.06, and 0.06 μg/ml for C. lusitaniae, 1, 0.25, and 0.03 μg/ml for C. parapsilosis, and 1, 0.12, and 0.06 μg/ml for C. tropicalis. The low number of MICs (<100) for other less prevalent species (C. famata, C. kefyr, C. orthopsilosis, C. rugosa) precluded ECV definition, but their MIC distributions are documented. Evaluation of our ECVs for some species/agent combinations using published individual MICs for 136 isolates (harboring mutations in or upregulation of ERG11, MDR1, CDR1, or CDR2) and 64 WT isolates indicated that our ECVs may be useful in distinguishing WT from non-WT isolates.

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Authors
Espinel-Ingroff, A., Pfaller, M. A., Bustamante, B., Canton, E., Fothergill, A., Fuller, J., Gonzalez, G. M., Lass-Flörl, C., Lockhart, S. R., Martin-Mazuelos, E., Meis, J. F., Melhem, M. S. C., Ostrosky-Zeichner, L., Pelaez, T., Szeszs, M. W., St-Germain, G., Bonfietti, L. X., Guarro, J., & Turnidge, J.
Affiliations
  • VCU Medical Center, Richmond, Virginia, USA
  • University of Iowa (US)
  • Universidad Peruana Cayetano Heredia (PE)
  • Unidad de Microbiologia Experimental, Centro de Investigacion, Hospital Universitario La Fe, Valencia, Spain
  • The University of Texas at San Antonio Health Science Center (US)
  • University of Alberta (CA)
  • Universidad Autonóma de Nuevo León, Monterrey, Nuevo León, Mexico
  • The Innsbruck Medical University, Division of Hygiene and Medical Microbiology, Innsbruck, Austria
  • Centers for Disease Control and Prevention (US)
  • Hospital Universitario de Valme, Seville, Spain
  • Radboud University Nijmegen (NL)
  • Fungal Taxonomy Laboratories, Adolfo Lutz Institute, São Paulo City, Brazil
  • University of Texas Health Science Center, Houston, Texas, USA
  • Hospital General Universitario Gregorio Maraňón, Facultad de Medicina, Universidad Complutense, Madrid, Spain
  • Instituto Adolfo Lutz (BR)
  • Laboratoire de Santé Publique du Québec, Institut National de Santé Publique du Québec, Quebec, Canada
  • Institut de Recerca Biomèdica Catalunya Sud (ES)
  • The University of Adelaide (AU)
Venue
Antimicrobial Agents and Chemotherapy
Published
2014-04
Volume
58
Issue
4
Pages
2006-2012
ISSN
  • 0066-4804 (ISSN-L)
  • 1098-6596
OpenAlex
W2113614834
Cited by
105
References
40
Citations by year
2026: 2 · 2025: 2 · 2024: 2 · 2023: 7 · 2022: 7 · 2021: 6 · 2020: 6 · 2019: 12 · 2018: 11 · 2017: 15 · 2016: 11 · 2015: 18 · 2014: 6
FWCI
11.68
Type
journal article
Language
en
Open access
Locations
  • Antimicrobial Agents and Chemotherapy (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Radboud Repository (Radboud University) (submittedVersion)
  • Rovira & Virgili repository (submittedVersion, cc-by)
  • Radboud Repository (Radboud University) (submittedVersion, other-oa)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Yeasts and Rust Fungi Studies
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Fungal Plant Pathogen Control
Keywords
epidemiological cut-off values, Candida, antifungal resistance, fluconazole, posaconazole, voriconazole, triazole antifungals, Candida albicans, Candida glabrata, Candida parapsilosis, Candida tropicalis, Candida krusei, Candida lusitaniae, Candida guilliermondii, Candida dubliniensis
MeSH terms
Antifungal Agents, Candida, Microbial Sensitivity Tests, Pyrimidines, Triazoles, Fluconazole, Voriconazole

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