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Asthma features in severe COPD: Identifying treatable traits.

Sandhya Matthes1, Jakob Stadler1, Jürgen Barton1

  • 1Department of Internal Medicine V, University of Munich, Comprehensive Pneumology Center (CPC-M), Member of the German Centre for Lung Research (DZL), Germany.

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Summary

Asthma features were found in 15% of severe COPD patients, leading to more frequent and severe exacerbations. These patients may benefit from targeted therapies like anti-IgE or anti-IL5 treatments.

Keywords:
Asthma and COPD overlapCOPDExacerbations of COPDTargeted therapy

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Area of Science:

  • Pulmonology
  • Immunology
  • Respiratory Medicine

Background:

  • Severe chronic obstructive pulmonary disease (COPD) and asthma are distinct respiratory conditions.
  • Overlap between COPD and asthma (asthma-COPD overlap) is increasingly recognized.
  • Understanding shared features is crucial for optimizing treatment strategies.

Purpose of the Study:

  • To investigate the prevalence of asthma features in patients with severe COPD (GOLD IV/D).
  • To assess the association between asthma features and exacerbation severity in this population.
  • To identify potential candidates for biological therapies typically used for severe asthma.

Main Methods:

  • Prospective, consecutive, cross-sectional analysis of 80 severe COPD patients (GOLD IV/D).
  • Evaluation of spirometry (FEV1 reversibility), fractional exhaled nitric oxide (FeNO), serum IgE, allergen sensitization, blood eosinophilia, and induced sputum.
  • Identification of patients with asthma-COPD overlap based on specific criteria.

Main Results:

  • 15% (12/80) of severe COPD patients exhibited asthma features.
  • Patients with asthma features experienced significantly more severe exacerbations requiring non-invasive ventilation (NIV) or intensive care unit (ICU) admission (p < 0.005).
  • High prevalence of eosinophilia (blood and sputum), elevated FeNO, and IgE sensitization were noted in subsets of patients.

Conclusions:

  • A significant subset of severe COPD patients presents with asthma features.
  • These asthma features are linked to more severe exacerbations, even with optimal COPD management.
  • Such patients represent potential candidates for targeted biological therapies, including anti-IgE and anti-IL5 treatments.