Laboratory evaluation of new antifungal agents against rare and refractory mycoses

Research output: Contribution to journalReview articlepeer-review

20 Scopus citations


Purpose of review: An increase in refractory invasive fungal infections in the setting of marrow/solid organ transplantation and other immune-compromising clinical entities has provided the impetus for the development of new, more efficacious/less toxic antifungal agents. This review (1) examines currently available laboratory methods for the in-vitro evaluation of these new agents against both yeasts and filamentous fungi; (2) provides a summary of the most attractive investigational agents currently undergoing clinical trials/development; and (3) outlines the major refractory mycoses in contemporary medicine. Recent findings: Fluconazole-resistant Candida spp., Trichosporon spp., zygomycetous genera, the endemic mycoses, Scedosporium, Aspergillus, and Fusarium spp., and an ever-expanding list of lesser-known hyaline and phaeoid genera inciting invasive fungal infections comprise the bulk of refractory mycoses in the immune-compromised host. In-vitro data generated from reference-based antifungal susceptibility testing methods indicate an increased armamentarium of potentially efficacious agents against most of these mycoses. Summary: The newly approved antifungal agents caspofungin and voriconazole, used either as monotherapy or in combination regimens, have a significantly improved spectrum of activity over previously available therapeutic options. Correlation of clinical outcomes with investigational agents demonstrating in-vivo/in-vitro activity will provide critical information needed for the development of clinically significant minimum inhibitory concentration interpretative breakpoints.

Original languageEnglish (US)
Pages (from-to)575-582
Number of pages8
JournalCurrent Opinion in Infectious Diseases
Issue number6
StatePublished - Dec 2002


  • Caspofungun
  • In-vitro antifungal susceptibility
  • New antifungal agents
  • Posaconazole
  • Ravuconazole
  • Refractory mycoses
  • Voriconazole

ASJC Scopus subject areas

  • Microbiology (medical)
  • Infectious Diseases


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