Advanced ER-Positive HER2-Negative Breast Cancer research hub

A Study to Investigate Efficacy and Safety With Oral AZD9833 Compared With Intramuscular Fulvestrant in Post-menopausal Women at Least 18 Years of Age With Advanced ER-positive HER2 Negative Breast Cancer

This study looks at a new drug, AZD9833, for post-menopausal women with advanced breast cancer that's hormone-sensitive (ER-positive) and HER2-negative. It compares AZD9833, taken by mouth, with an existing injected drug, Fulvestrant, to see which is safer and more effective.