Long-term safety study of a new treatment for severe lung disease

This is a follow-up study testing tozorakimab, a new injectable medication designed to help people with chronic obstructive pulmonary disease (COPD) who have a history of flare-ups. Researchers want to make sure this treatment is safe and well-tolerated over a longer period of time. You would participate only if you completed an earlier study of this same medication.

Previous shorter studies showed promise, but doctors need to understand how safe this medication is when people use it for months or years. This study helps answer whether the treatment continues to work well and cause no serious problems over the long term.