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Study identifier: NCT06525766 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Adaptive Therapy With Capecitabine for Treatment of Metastatic ER Positive, HER2 Negative Breast Cancer

Condition: Anatomic Stage IV Breast Cancer AJCC v8 · Estrogen-receptor-positive Breast Cancer · Metastatic HER2-Negative Breast Carcinoma  ·  Sponsor: Mayo Clinic

PhasePhase 2
Planned participants35
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This phase II trial evaluates the effect of capecitabine on tumor response using imaging and tumor markers to adjust dose (adaptive therapy) in patients with estrogen receptor (ER) positive, HER2 negative breast cancer that has spread from where it first started to other areas in the body (metastatic). Capecitabine is in a class of medications called antimetabolites. It is taken up by tumor cells and breaks down into fluorouracil, a substance that kills tumor cells. Adaptive therapy with capecitabine based on tumor burden response may slow or stop the growth of tumor cells in patients with metastatic ER positive, HER2 negative breast cancer.

This description comes directly from the study's public registry record.

Talk to the study team

Clinical Trials Referral Office  ·  855-776-0015  ·  mayocliniccancerstudies@mayo.edu

Always discuss trial participation with your own doctor first.

Locations (1)

Mayo Clinic in ArizonaScottsdale, Arizona, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06525766