The application of next-generation sequencing in diagnosing invasive pulmonary aspergillosis: three case reports

Bin-Chan He1, Lu-Lu Liu1, Bi-Lin Chen1

  • 1Department of Respiratory and Critical Care Medicine, Jinling Hospital, Medical School of Nanjing University Nanjing 210002, China.

Insights

Next-generation sequencing (NGS) aids in diagnosing invasive pulmonary aspergillosis (IPA), a serious lung infection. This rapid method detected Aspergillus fumigatus in patients, including those without typical risk factors like neutropenia.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Genomics

Background:

  • Invasive pulmonary aspergillosis (IPA) presents diagnostic challenges due to difficulties in obtaining microbiological evidence.
  • Current microbiological methods for IPA diagnosis are often slow and have low sensitivity.

Observation:

  • This study presents three cases of IPA, with two patients having a history of chronic obstructive pulmonary disease (COPD) and asthma.
  • Next-generation sequencing (NGS) was employed to detect the Aspergillus fumigatus gene in bronchoalveolar lavage fluid.

Findings:

  • NGS successfully identified Aspergillus fumigatus in all three IPA cases, demonstrating its utility in pathogen detection.
  • The study highlights that IPA can occur in patients without neutropenia, broadening the clinical suspicion criteria.

Implications:

  • NGS offers a faster and more accurate alternative for diagnosing IPA compared to traditional methods.
  • These findings suggest a need to consider IPA in a wider range of patients, including non-neutropenic individuals.

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