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Systemic antifungal therapy: new options, new challenges.

Annie Wong-Beringer1, Jane Kriengkauykiat

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The rise in invasive fungal infections necessitates new treatments. This review compares current and new antifungal drugs, including caspofungin and voriconazole, for efficacy, toxicity, and cost.

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Area of Science:

  • Mycology
  • Infectious Diseases
  • Pharmacology

Background:

  • Invasive fungal infections (IFIs) are increasing due to a growing immunocompromised population.
  • Existing treatments like amphotericin B and azoles have limitations including spectrum, resistance, and toxicity.
  • Newer agents like caspofungin and voriconazole offer expanded options but have challenges.

Purpose of the Study:

  • To compare the pharmacologic profiles, clinical efficacy, toxicity, and costs of systemic antifungal agents.
  • To emphasize the characteristics and clinical utility of newly approved antifungal drugs.
  • To provide recommendations for agent selection based on common IFIs: candidiasis, aspergillosis, and febrile neutropenia.

Main Methods:

  • Comparative review of available systemic antifungal agents.
  • Analysis of pharmacologic properties, clinical trial data (efficacy and safety), and drug acquisition costs.
  • Focus on agents used for invasive candidiasis, invasive aspergillosis, and febrile neutropenia.

Main Results:

  • Traditional antifungals have significant limitations in activity, resistance, and drug interactions.
  • Newer agents (caspofungin, voriconazole) expand treatment options but require careful consideration of cost and toxicity.
  • Each agent has specific indications and roles in managing IFIs.

Conclusions:

  • The evolving landscape of invasive mycoses management requires a nuanced approach to antifungal therapy.
  • Selection of antifungal agents should balance efficacy, safety, drug interactions, cost, and specific clinical indications.
  • Further clinical experience is needed to fully define the role of newer antifungal agents.