Biomarkers for invasive aspergillosis: the challenges continue

Area of Science:

• Medical Mycology
• Infectious Diseases
• Diagnostic Microbiology

Background:

• Invasive aspergillosis (IA) is an increasing opportunistic infection in immunocompromised populations.
• Current diagnostic methods for IA face challenges, limiting timely and effective treatment.
• There is a critical need for improved and novel diagnostic strategies for IA.

Purpose of the Study:

• To review the limitations of current IA diagnostic assays.
• To explore emerging diagnostic approaches for IA.
• To emphasize the need for combined diagnostic strategies for optimal IA management.

Main Methods:

• Review of existing literature on invasive aspergillosis diagnostics.
• Analysis of current galactomannan and beta-D-glucan assay utility and limitations.
• Exploration of novel diagnostic technologies including omics approaches and lateral-flow devices.

Main Results:

• The clinical utility of current biomarkers like galactomannan and beta-D-glucan is variable and depends on clinician awareness of their limitations.
• Genomic, proteomic, and metabolomic approaches offer potential for new diagnostic methods.
• Point-of-care lateral-flow devices represent a novel detection strategy.

Conclusions:

• Existing diagnostic assays for invasive aspergillosis have limitations that impact clinical utility.
• Emerging technologies like omics and lateral-flow devices show promise for improving IA diagnosis.
• A combination of diagnostic methods is likely necessary for optimal diagnosis and patient management of invasive aspergillosis.