Invasive Fungal Disease in Allogeneic Hematopoietic Cell Transplantation: New Risk Factors and New Therapeutic

Abby P Douglas1,2,3, Monica A Slavin1,2,4,5

  • 1National Centre for Infections in Cancer, Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.

Insights

Invasive fungal diseases (IFD) pose a significant threat to patients undergoing allogeneic hematopoietic cell transplantation (alloHCT). This review highlights evolving IFD landscapes, new treatments, and rising antifungal resistance in this vulnerable population.

Area of Science:

  • Medical Mycology
  • Hematology
  • Infectious Diseases

Background:

  • Invasive fungal diseases (IFD) are a major cause of mortality (30-80%) in patients undergoing immunosuppressive therapies, particularly allogeneic hematopoietic cell transplantation (alloHCT).
  • Changes in GVHD prophylaxis, increased transplant survivorship, expanded access to transplantation, and use of haploidentical donors are altering the epidemiology of IFD post-alloHCT.
  • Climate change is expanding the geographic range of endemic fungal infections, necessitating broader clinical awareness beyond traditional risk groups.

Purpose of the Study:

  • To review the evolving landscape of IFD in patients undergoing alloHCT.
  • To discuss emerging diagnostic tools and novel antifungal treatment options.
  • To address the increasing challenge of antifungal resistance.

Main Methods:

  • Literature review focusing on recent advancements in IFD management.
  • Analysis of trends in IFD incidence, risk factors, and treatment outcomes.
  • Synthesis of data on new antifungal agents and resistance patterns.

Main Results:

  • The field of IFD post-alloHCT is dynamic, influenced by evolving transplant practices and expanding endemic fungal infections.
  • Rising rates of antifungal resistance to azoles are observed, alongside an increase in resistant mold infections in patients receiving prophylaxis.
  • New diagnostics and antifungal therapies are becoming available, offering potential improvements in IFD management.

Conclusions:

  • Clinicians require heightened awareness of IFD due to changing risk profiles and geographic spread.
  • The emergence of antifungal resistance necessitates careful stewardship and exploration of novel therapeutic strategies.
  • Continued research and investment in surveillance, diagnostics, and treatments are critical for combating IFD in alloHCT recipients.

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