Unclassifiable Invasive Pulmonary Aspergillosis in the ICU: insights from a multicenter, retrospective cohort study in France (2022-2024)

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ID: 325604
2026
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Abstract
Abstract Background Suspected invasive pulmonary aspergillosis (IPA) is increasingly treated in intensive care, including in patients without classical immunosuppression. Whether current research definitions (EORTC/MSGERC, FUNDICU) classify treated cases and predict mortality is unclear. Methods We retrospectively included adults in 48 French intensive care units who received systemic antifungal therapy for suspected IPA (January 2022-July 2024). Patients were categorized as having modified EORTC/MSGERC probable IPA, FUNDICU probable IPA, or unclassified. Ninety-day mortality was analyzed using multivariable Cox regression; heterogeneity was explored with unsupervised clustering. Results Among 371 treated patients, 217 (58%) met modified EORTC, 83 (22%) met FUNDICU, and 71 (19%) were unclassified. Overall, 90-day mortality was 62% and survival did not differ by category (63%, 63%, 58%; log-rank p=0.24). In adjusted analyses, IPA categorization was not associated with mortality (FUNDICU vs EORTC: adjusted hazard ratio (aHR)=0.86, 95% CI 0.62-1.20; unclassified vs EORTC: aHR=0.89, 0.62-1.30). Age (aHR 1.03/year, 1.02-1.05), SOFA (1.06/point, 1.03-1.10), and frailty (1.17/point, 1.07-1.30) independently predicted 90-day mortality. Exploratory clustering identified six phenotypes with 90-day mortality ranging from 40% to 80%. Conclusions Nearly one in five intensive care patients treated for suspected IPA were not classifiable by EORTC/MSGERC or FUNDICU definitions. Mortality was more strongly associated with age, frailty and acute severity than with classification category, supporting ICU-focused diagnostic frameworks and risk stratification; these associations should be read in light of the treatment-based design and do not establish that the definitions lack diagnostic value.
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openalex_W7203769604 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors
Journal Open forum infectious diseases
Year 2026
DOI
10.1093/ofid/ofag519
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