Breakthrough Invasive Mold Infections in the Hematology Patient: Current Concepts and Future Directions

Michail S Lionakis1, Russell E Lewis2, Dimitrios P Kontoyiannis3

  • 1Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland.

Insights

Despite advances in antifungal therapies, breakthrough invasive mold infections (bIMIs) remain a challenge in patients with hematological malignancies and stem cell transplants. Managing bIMIs requires individualized treatment plans considering patient factors and fungal resistance.

Area of Science:

  • Clinical Mycology
  • Hematology
  • Infectious Diseases

Background:

  • Widespread use of mold-active agents has reduced invasive mold infections (IMIs) in hematological malignancy and HSCT patients.
  • A subset of these high-risk patients still develop breakthrough IMIs (bIMIs) despite antifungal prophylaxis.
  • Limited prospective randomized clinical trial data exist to guide bIMI treatment decisions.

Purpose of the Study:

  • To present the current understanding of clinical, diagnostic, and treatment challenges of bIMIs.
  • To outline common clinical scenarios for bIMIs in high-risk adult patients.
  • To highlight areas for future investigation in managing bIMIs.

Main Methods:

  • This is a viewpoint article, not a primary research study.
  • It synthesizes current knowledge on bIMIs based on existing literature and clinical experience.
  • Focuses on challenges in diagnosis and treatment strategies for bIMIs in immunocompromised hosts.

Main Results:

  • Breakthrough invasive mold infections (bIMIs) continue to occur in patients receiving mold-active antifungals.
  • Management of bIMIs is complex and requires an individualized approach.
  • Key factors influencing management include host status, diagnostic certainty, infection site, local epidemiology, and antifungal properties.

Conclusions:

  • Individualized treatment plans are crucial for managing bIMIs in high-risk hematology and HSCT patients.
  • Consideration of host factors, fungal resistance, and drug properties is essential.
  • Further research is needed to address the complexities of bIMI management.

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