Study of Patient With Frequent Exacerbations in Moscow

This observational study in Moscow follows people with moderate to very severe COPD (a serious lung disease) who have frequent flare-ups (called exacerbations), to understand patterns of disease and compare outcomes across different treatment approaches. **You may be eligible if...** - You are 18 or older with a confirmed diagnosis of moderate to very severe COPD (confirmed by breathing tests) - You have had at least 2 moderate flare-ups or 1 severe flare-up in the past 12 months - You have been on a stable two-drug inhaled therapy regimen for at least 6 weeks **You may NOT be eligible if...** - You are a current smoker or former smoker with fewer than 10 pack-years - Your COPD has not been confirmed by spirometry (a breathing test) - You are not on the required dual inhaler therapy Talk to your doctor to see if this trial is right for you.