Lateral Flow Assays for the Diagnosis of Invasive Aspergillosis: Current Status

Sven Heldt1, Martin Hoenigl1,2,3,4

  • 1Division of Pulmonology, Medical University of Graz, Graz, Austria.

Abstract

Insights

New lateral-flow device (LFD) tests show promise for early diagnosis of invasive aspergillosis (IA). These point-of-care (POC) tests could improve patient outcomes by enabling faster, targeted antifungal treatment.

Area of Science:

  • Mycology
  • Infectious Diseases
  • Biomarker Development

Background:

  • Invasive aspergillosis (IA) diagnosis is challenging, especially in early stages, hindering timely treatment and impacting survival rates.
  • Current diagnostic methods for IA have limitations including availability and time-to-result, necessitating improved diagnostic tools.
  • Early detection of IA is crucial for effective, targeted antifungal therapy and improved patient prognosis.

Purpose of the Study:

  • To provide an update on the development and potential of an Aspergillus-specific lateral-flow device (LFD) test for diagnosing IA.
  • To review findings on the feasibility of point-of-care (POC) detection of urinary fungal antigens for IA diagnosis.

Main Methods:

  • Review of current advancements in Aspergillus-specific lateral-flow device (LFD) technology.
  • Evaluation of promising findings regarding POC detection of urinary galactomannan-like antigens using LFD assays.

Main Results:

  • Development of POC LFD assays for Aspergillus antigen detection is ongoing.
  • The Aspergillus-specific LFD test, utilizing the JF5 antibody, detects extracellular glycoprotein antigens from Aspergillus spp. during active growth, showing promising study results.
  • A separate monoclonal antibody (Ab476)-based LFD for urinary antigen detection has been developed but requires further validation.

Conclusions:

  • Significant progress has been made in developing LFD assays for invasive aspergillosis (IA).
  • The Aspergillus-specific LFD test is highly promising, though commercial availability is pending.
  • Research continues for reliable POC tests for other molds, such as mucorales.

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