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INFORMATION FOR

    Breast, Phase III

    Palazestrant in Combination With Ribociclib for the First-line Treatment of ER+/HER2- Advanced Breast Cancer

    What is the purpose of this trial?

    This phase 3 clinical trial compares the efficacy and safety of palazestrant with ribociclib to letrozole and ribociclib in women and men who have not received prior systemic anti-cancer treatment for advanced breast cancer.

    Contact Information

    For more information about this study, including how to volunteer, contact Carl Brown

    Help Us Discover!

    You can help our team find trials you might be eligible for by creating a volunteer profile in MyChart. To get started, create a volunteer profile, or contact helpusdiscover@yale.edu, or call 877.978.8343 for more information.

    • Last Updated
      06/09/2026
    • Study IRB
      #2000041648