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Study identifier: NCT06067503 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Biomarkers to Detect Endocrine Therapy Resistance

Condition: Metastatic Cancer · Breast Cancer · Lobular Breast Carcinoma  ·  Sponsor: University of Wisconsin, Madison

PhasePhase 2
Planned participants8
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

This pilot observational study is being done to identify possible biomarkers of response to endocrine therapy in patients with ER/PR+ metastatic lobular breast cancer (LBC) starting new endocrine therapy. 18F-fluorofuranylnorprogesterone Positron Emission Tomography/Computed Tomography (FFNP-PET/CT) and liquid biopsies will be performed at baseline and after 4 weeks of treatment. Baseline levels and dynamic on-treatment changes in estrogen signaling as measured by FFNP-PET/CT and circulating tumor cell (CTC) liquid biopsy will be correlated with clinical response to endocrine therapy and progression-free survival in the above cohort of patients.

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

Talk to the study team

Cancer Connect  ·  800-622-8922  ·  clinicaltrials@cancer.wisc.edu

Always discuss trial participation with your own doctor first.

Locations (1)

UW Carbone Cancer CenterMadison, Wisconsin, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06067503