AstraZeneca's breast cancer pill failed to delay disease progression more than the standard treatment in a late-stage trial, results that could dampen optimism around the medicine. https://www.bloomberg.com/news/articles/2026-09-11/astrazeneca-says-breast-cancer-pill-fails-in-key-study?taid=6aa494d826606600019c2e95&utm_campaign=trueanthem&utm_content=business&utm_medium=social&utm_source=twitter