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Antifungal Agents in the 21st Century: Advances, Challenges, and Future Perspectives

Francesco Branda1, Nicola Petrosillo2, Giancarlo Ceccarelli3

  • 1Unit of Medical Statistics and Molecular Epidemiology, Università Campus Bio-Medico di Roma, 00128 Rome, Italy.

Infectious Disease Reports
|August 27, 2025
PubMed

Insights

Invasive fungal infections (IFIs) are a major global health crisis, causing over 1.5 million deaths annually. This review explores antifungal therapies, resistance challenges, and the urgent need for new treatments and strategies.

Area of Science:

  • Medical Mycology
  • Infectious Diseases
  • Pharmacology

Background:

  • Invasive fungal infections (IFIs) pose a significant global health threat, especially to immunocompromised individuals, resulting in over 1.5 million annual deaths.
  • Despite substantial clinical and economic impact, IFIs receive inadequate public health prioritization.
  • Antifungal resistance is an escalating concern, driven by factors including agricultural fungicide use and healthcare-associated infections.

Purpose of the Study:

  • To review the current state of antifungal therapy, encompassing recent advancements, persistent challenges, and future research directions.
  • To analyze existing antifungal drug classes and investigate emerging resistance patterns in key fungal pathogens.
  • To highlight novel therapeutic agents and the importance of integrated strategies for combating antifungal resistance.

Main Methods:

  • Comprehensive literature review of antifungal agents, mechanisms of action, pharmacokinetics, and clinical utility.
  • Analysis of current and emerging antifungal resistance trends, focusing on pathogens like *Candida auris* and resistant *Aspergillus fumigatus*.
  • Examination of novel antifungal drug candidates, including next-generation echinocandins, triterpenoids, and orotomides.

Main Results:

  • Established antifungal drug classes (polyenes, azoles, echinocandins) are discussed alongside their limitations and the growing challenge of resistance.
  • Emerging resistance in critical pathogens like *Candida auris* and azole-resistant *Aspergillus fumigatus* necessitates urgent intervention.
  • Promising novel agents such as rezafungin, ibrexafungerp, and olorofim demonstrate potential against resistant strains and improved safety profiles.

Conclusions:

  • Addressing the escalating threat of IFIs and antifungal resistance requires innovative therapies, rapid diagnostics, and robust stewardship programs.
  • Integrated
  • One Health
  • approaches are crucial for mitigating resistance across environmental and clinical settings.
  • Multidisciplinary collaboration, enhanced surveillance, and accelerated drug development are essential to meet the unmet needs in antifungal treatment.
Keywords:
antifungal resistanceantifungal therapydrug developmentemerging fungal threatsfungal pathogensinvasive fungal infectionstherapeutic challenges

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