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Association between Cystic Fibrosis exacerbations, lung function, T2 inflammation and microbiological colonization
Dana Albon1, Lijia Zhang2, James Patrie3
1Departments of Medicine, University of Virginia School of Medicine, 800546, Charlottesville, VA, 22908, USA. da9zj@uvahealth.org.
Summary
Type 2 inflammation in cystic fibrosis (CF) patients, indicated by eosinophil counts and IgE levels, correlates with pulmonary exacerbations and lung function decline. This relationship is independent of bacterial colonization, suggesting T2 inflammation as a key factor in CF progression.
Area of Science:
- Pulmonology
- Immunology
- Genetics
Background:
- Cystic Fibrosis (CF) affects lung function and is associated with a high prevalence of asthma.
- A type 2 (T2) inflammatory phenotype is frequently observed in CF patients, but its specific role is not fully understood.
Purpose of the Study:
- To investigate the association between the eosinophilic T2 inflammatory phenotype in CF and pulmonary outcomes.
- To explore the relationship between T2 inflammation markers and microbiological data in CF patients.
Main Methods:
- Retrospective chart review of 74 adult CF patients (aged 18+) from 2013-2018.
- Collected data included Absolute Eosinophil Counts (AEC) and Immunoglobulin E (IgE) levels.
- Analyzed correlations with lung function, exacerbations, and microbial colonization.
Main Results:
- Increased AEC and IgE levels correlated significantly with lung function decline (p<0.001).
- Higher AEC was associated with increased CF exacerbations requiring hospitalization or IV antibiotics (p=0.018).
- AEC and IgE levels showed no association with bacterial or fungal airway colonization.
Conclusions:
- T2 inflammation, marked by AEC and IgE, is linked to pulmonary exacerbations and lung function decline in CF patients.
- These findings are independent of common bacterial infections, highlighting T2 inflammation's role in CF.
- Further research is warranted to understand the therapeutic implications of T2 inflammation in CF care.
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