Testing Whether Hormone Therapy With Ribociclib is as Effective as Chemotherapy Followed by Hormone Therapy With Ribociclib for the Treatment of High Anatomic Stage Breast Cancer With Low Recurrence Risk, The RxFINE-Low Trial
A Phase III Trial of Rx Therapy Guided by Genomic Risk Assessment For High Anatomic Stage ER-pos/HER2-neg Breast Cancer With RS Less Than or Equal to 25 (RxFINE-Low)
National Cancer Institute (NCI)
1,978 participants
Aug 10, 2026
INTERVENTIONAL
Conditions
Summary
This phase III trial compares standard of care hormone therapy plus ribociclib to chemotherapy followed by hormone therapy plus ribociclib for the treatment of patients with high anatomic stage breast cancer with low risk of the cancer returning (low risk recurrence). Ribociclib may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Hormone therapy, with letrozole, anastrozole or exemestane, lowers the amount of estrogen made by the body. This may help stop the growth of tumor cells that need estrogen to grow. Chemotherapy drugs work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Hormone therapy plus ribociclib may work as well as chemotherapy followed by hormone therapy plus ribociclib for the treatment of high anatomic stage breast cancer with low recurrence risk.
Eligibility
Plain Language Summary
Simplified for easier understanding
This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.
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Interventions
Given PO
Undergo blood sample collection
Undergo bone scan
Receive standard of care chemotherapy
Undergo CT scan
Given PO
Given PO
Undergo risk recurrence testing
Undergo FDG PET scan
Given PO
Locations(183)
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NCT07391774