Blood eosinophils and inhaled corticosteroids in patients with COPD: systematic review and meta-analysis

International Journal of Chronic Obstructive Pulmonary Disease
Shih-Lung Cheng

Abstract

COPD is a highly heterogeneous disease. Potential biomarkers to identify patients with COPD who will derive the greatest benefit from inhaled corticosteroid (ICS) treatment are needed. Blood eosinophil count can serve as a predictive biomarker for the efficacy of ICS treatment. The aim of this systematic review and meta-analysis was to assess whether a blood eosinophil count of ≥2% in patients undergoing ICS therapy was associated with a greater reduction in COPD exacerbation rate and pneumonia incidence. An electronic search was performed using the keywords "COPD", "eosinophil", and "clinical trial" in the PubMed and EMBASE databases to retrieve articles, up to 2017, relevant to our focus. Data were extracted, and a meta-analysis was conducted using RevMan 5 (version 5.3.5). Five studies comprising 12,496 patients with moderate-to-very severe COPD were included. At baseline, 60% of the patients had ≥2% blood eosinophils. Our meta-analysis showed a 17% reduction in exacerbation of moderate/severe COPD in patients with ≥2% blood eosinophils undergoing ICS therapy compared to the non-ICS/ICS withdrawal/placebo group. The difference between the two types of treatment was significant (risk ratio [RR], 0.816; 95% CI, 0.67-0.99; P=0....Continue Reading

Citations

Dec 10, 2019·The Clinical Respiratory Journal·Stanca-Patricia HogeaCristian Oancea
May 20, 2020·Respirology : Official Journal of the Asian Pacific Society of Respirology·Sarah A HilesVanessa M McDonald
Sep 14, 2019·The European Respiratory Journal·Alyn H MoriceAngela Zacharasiewicz
Aug 1, 2019·Molecular Diagnosis & Therapy·Mario CazzolaPaola Rogliani
Oct 19, 2019·Journal of Clinical Medicine·Amit FrenkelNimrod Maimon
Mar 13, 2021·International Journal of Chronic Obstructive Pulmonary Disease·Mathias DamkjærNina Godtfredsen

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NCT01009463
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Comprehensive Meta - Analysis

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