Tozorakimab Cuts COPD Mucus Plugging, With George Washko, MD - HCPLive
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News|Articles|October 16, 2026 Mucus plugging is increasingly recognized as a pathophysiological feature of chronic obstructive pulmonary disease (COPD), associated in prior literature with worse symptoms, poorer quality of life, higher exacerbation risk, and increased mortality. A late-breaking integrated analysis of the replicate phase 3 OBERON and TITANIA trials introduced a segmental mucus plug score, a standardized metric scoring 18 lung segments for the presence or absence of a plug using a centralized double-read CT paradigm.1Nearly 79% of the imaging cohort had at least 1 mucus-plugged segment at baseline, and these patients had worse lung function, higher symptom burden, and more prior exacerbations than those without plugging. Tozorakimab produced a dose-dependent reduction in segmental mucus plug score at week 52, with both current and former smokers contributing to the overall effect.
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