Late-Breaking Results From the Phase 2a COURSE Trial Illustrate Tezspire's Impact on COPD Exacerbations in Patients With a Broad Range of Eosinophil Levels THOUSAND OAKS, Calif., May 19, 2024 /PRNewswire/ -- Amgen (NASDAQ:AMGN) and AstraZeneca today announced the results of the Phase 2a COURSE trial evaluating Tezspire® (tezepelumab-ekko) in people with moderate to very severe chronic obstructive pulmonary disease (COPD) with a broad range of baseline blood eosinophil counts (BEC) irrespective of emphysema, ...