Related Experiment Video
Updated: Aug 1, 2026

Whole Genome Sequencing of Candida glabrata for Detection of Markers of Antifungal Drug Resistance
Published on: December 28, 2017
Current and emerging azole antifungal agents
D J Sheehan1, C A Hitchcock, C M Sibley
1Pfizer Pharmaceuticals Group, Pfizer Inc., New York, New York 10017-5755, USA. sheehd@pfizer.com
Abstract:
Major developments in research into the azole class of antifungal agents during the 1990s have provided expanded options for the treatment of many opportunistic and endemic fungal infections. Fluconazole and itraconazole have proved to be safer than both amphotericin B and ketoconazole. Despite these advances, serious fungal infections remain difficult to treat, and resistance to the available drugs is emerging. This review describes present and future uses of the currently available azole antifungal agents in the treatment of systemic and superficial fungal infections and provides a brief overview of the current status of in vitro susceptibility testing and the growing problem of clinical resistance to the azoles. Use of the currently available azoles in combination with other antifungal agents with different mechanisms of action is likely to provide enhanced efficacy. Detailed information on some of the second-generation triazoles being developed to provide extended coverage of opportunistic, endemic, and emerging fungal pathogens, as well as those in which resistance to older agents is becoming problematic, is provided.
Insights
Newer azole antifungals offer safer treatment options for fungal infections. However, emerging resistance necessitates exploring combination therapies and next-generation azoles for improved efficacy against challenging pathogens.
Area of Science:
- Mycology
- Pharmacology
- Infectious Diseases
Background:
- Azole antifungals have advanced treatment for opportunistic and endemic fungal infections since the 1990s.
- Fluconazole and itraconazole demonstrate improved safety profiles compared to older agents like amphotericin B and ketoconazole.
- Despite progress, serious fungal infections persist as a therapeutic challenge, compounded by the emergence of drug resistance.
Purpose of the Study:
- To review the current and future applications of available azole antifungal agents.
- To provide an overview of in vitro susceptibility testing and clinical resistance trends.
- To discuss the development of second-generation triazoles for broader pathogen coverage and resistant strains.
Main Methods:
- Literature review of azole antifungal research and clinical applications.
- Analysis of in vitro susceptibility data and emerging resistance patterns.
- Evaluation of second-generation triazoles in development.
Main Results:
- Azoles like fluconazole and itraconazole are safer and effective for various fungal infections.
- Clinical resistance to existing azoles is a growing concern, impacting treatment efficacy.
- Combination therapy with azoles and agents of different mechanisms shows promise for enhanced outcomes.
Conclusions:
- Current azoles provide valuable treatment options, but resistance necessitates ongoing research.
- Combination therapies and novel second-generation triazoles are crucial for managing difficult-to-treat and resistant fungal infections.
- Continued development of azole antifungals is vital to combat evolving fungal pathogens.
Related Concept Videos
Fungal Group Zygomycota
Fungal Phylum Microsporidia
Candidiasis
Antifungal Agents
Anthelminthic Agents
Antiprotozoal Agents

