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First received: September 19, 2023

Clinical Trial: Biomarkers to Detect Endocrine Therapy Resistance

Study Status: Completed

Recruit Status: RECRUITING

Condition: Metastatic Cancer

Study Type: INTERVENTIONAL


Official Title: Integrating Minimally Invasive Biomarkers of Estrogen Signaling to Detect Endocrine Therapy Resistance in Metastatic Invasive Lobular Breast Cancer

Brief Summary: 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…

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