Is blood eosinophilia a treatable trait in chronic obstructive airway diseases?

By
Giulio Massetti
Manuel Martella
Cristina Ruini
Valentina Ruggieri
Bianca Beghe
June 1, 2026
0 min

Frontiers In Immunology

Overview

This report discusses the potential of blood eosinophilia as a biomarker for type 2 inflammation in chronic obstructive airway diseases. A clinical case illustrates the shift in diagnosis from severe COPD to severe eosinophilic asthma, highlighting the implications for targeted therapy.

Background

Chronic obstructive airway diseases, including asthma and COPD, are traditionally managed based on rigid diagnostic labels. Recent advancements in precision medicine emphasize the identification of treatable traits, such as blood eosinophilia, which may guide personalized therapy. Understanding the role of eosinophilic inflammation is crucial for improving patient outcomes in these conditions.

Data Highlights

No numerical data or trial data provided in the article.

Key Findings

Blood eosinophilia is emerging as a biomarker for type 2 inflammation in asthma and COPD.
Approximately 20% to 40% of COPD patients may exhibit eosinophilic inflammation.
A clinical case demonstrated a shift in diagnosis from severe COPD to severe eosinophilic asthma based on persistent blood eosinophilia.
Mepolizumab was effective in improving symptoms and reducing exacerbations in the patient after the diagnosis change.
Blood eosinophilia should be integrated into a multidimensional assessment for managing chronic airway diseases.

Clinical Implications

The identification of blood eosinophilia can aid in the accurate diagnosis and management of patients with chronic obstructive airway diseases. Clinicians should consider eosinophilia as a treatable trait that may influence therapeutic decisions and improve patient outcomes.

Conclusion

Blood eosinophilia represents a significant trait in the management of chronic obstructive airway diseases, warranting further exploration as a potential therapeutic target. This case underscores the importance of accurate diagnosis in guiding treatment strategies.