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Timm Greulich,1 Sina Mager,1 Tanja Lucke,2 Andreas Rembert Koczulla,1 Robert Bals,3 Sebastian Fähndrich,3 Rudolf A Jörres,2 Peter Alter,1 Anne Kirsten,4 Claus Franz Vogelmeier,1 Henrik Watz4 1Department of Medicine, Pulmonary and Critical Care Medicine, University Medical Centre Giessen and Marburg, Philipps-University, Member of the German Centre for Lung Research (DZL), Marburg, Germany; 2Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine Ludwig-Maximilians-Universität München, Munich, Germany; 3Department of Internal Medicine V, Pulmonology, Allergology, Respiratory and Intensive Care Medicine, Saarland Hospital, Homburg/Saar, Germany; 4Pulmonary Research Institute at Lungen Clinic Grosshansdorf, Airway Research Center North (ARCN), Member of the German Centre for Lung Research (DZL), Grosshansdorf, GermanyIt has been increasingly recognized that the numbers of blood eosinophils (eos) might be an important biomarker in patients with COPD to identify patients at risk for exacerbations and for treatment to inhaled corticosteroid (ICS) treatment or anti-interleukin-5 therapy.1–3 However, data about the stability of blood eos counts over time are rare. We used data from the multicenter COSYCONET study to analyze the variability of eos by strata over a period of 18 months.4 |
