Antifungal drugs: What brings the future?
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Updated: Jan 22, 2026

Whole Genome Sequencing of Candida glabrata for Detection of Markers of Antifungal Drug Resistance
Published on: December 28, 2017
Ruth Van Daele1,2, Isabel Spriet1,2, Joost Wauters3,4
1Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium.
Abstract:
The high burden and growing prevalence of invasive fungal infections (IFIs), the toxicity and interactions associated with current antifungal drugs, as well as the increasing resistance, ask for the development of new antifungal drugs, preferably with a novel mode of action. Also, the availability of oral or once-weekly alternatives would enable ambulatory treatment resulting in an improved patient's comfort and therapy adherence. However, only one new azole and two new posaconazole-formulations were marketed over the last decade. This review focuses on the antifungal drugs in the pipeline undergoing clinical evaluation. First, the newest azole, isavuconazole, with its improved safety profile and reduction in DDIs, will be discussed. Moreover, there are two glucan synthase inhibitors (GSIs) in the antifungal pipeline: rezafungin (CD101), a long-acting echinocandin with an improved stability that enables once weekly administration, and SCY-078, an orally available GSI with efficacy against azole- and echinocandin resistant isolates. A new oral formulation of amphotericin B will also be presented. Moreover, the first representative of a new antifungal class, the orotomides, with a broad spectrum and no cross-resistance with current antifungal classes, will be discussed. Finally, an overview of other antifungals that are still in earlier clinical development phases, is provided.
Insights
New antifungal drugs are in development to combat rising invasive fungal infections (IFIs) and resistance. Promising candidates include novel azoles, glucan synthase inhibitors, and orotomides, offering improved safety and administration options.
Area of Science:
- Pharmacology
- Infectious Diseases
- Drug Development
Background:
- Invasive fungal infections (IFIs) present a significant and increasing global health challenge.
- Current antifungal therapies face limitations due to toxicity, drug interactions, and emerging resistance.
- There is a critical need for novel antifungal agents with improved efficacy and administration routes.
Purpose of the Study:
- To review antifungal drugs currently in clinical development pipelines.
- To highlight agents with novel mechanisms of action and improved therapeutic profiles.
- To discuss the potential of new antifungals for ambulatory and enhanced patient treatment.
Main Methods:
- Review of clinical trial data for emerging antifungal agents.
- Analysis of pharmacological properties, safety profiles, and resistance patterns.
- Comparison of novel antifungals with existing treatments.
Main Results:
- Isavuconazole, a new azole, demonstrates an improved safety profile and reduced drug-drug interactions (DDIs).
- Rezafungin (CD101) and SCY-078 represent novel glucan synthase inhibitors (GSIs) with potential for once-weekly or oral administration, including against resistant strains.
- New formulations of amphotericin B and the novel orotomide class show promise for broad-spectrum activity without cross-resistance.
Conclusions:
- The antifungal drug pipeline shows promising candidates addressing limitations of current therapies.
- Novel agents like isavuconazole, GSIs, and orotomides offer potential for improved safety, efficacy, and patient convenience.
- Continued development is crucial to combat the growing threat of invasive fungal infections.
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