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

Active, not recruiting

Plain-English translation of NCT04214288 on ClinicalTrials.gov ↗ · Source last updated June 2026 · How we translate trials

Phase 2 — Testing in a bigger group (up to a few hundred people) to see if the treatment actually works and is still safe.

Trial locations(85 sites)

United States

Research Site, Birmingham, Alabama

Research Site, Long Beach, California

Research Site, Fort Myers, Florida

Research Site, St. Petersburg, Florida

Research Site, Lincoln, Nebraska