Symposium
Chairs: Guy Brusselle (Ghent, BE), Maria Rosa Faner Canet (Barcelona, ES), Peter J. Barnes (London, GB)

Gene expression signatures in airway and nasal epithelium of COPD: linking endotypes to clinical outcomes Maarten van den Berge (Groningen, Netherlands)
Heterogeneity in the clinical outcomes of COPD: lessons from the ECLIPSE study Jørgen Vestbo (Manchester, United Kingdom)
Molecular variations underlying the heterogeneity in lung function in COPD Maen Obeidat (Vancouver, Canada)
Relationships between inflammatory markers, response to therapy, and lung function decline Jadwiga Wedzicha (London, United Kingdom)