ECLECTIC: EstroTEP and Circulating Biomarkers for ER-positive HER2-negative Metastatic Breast Cancer Patients
Eclectic is a strategy trial; once the class of treatment (endocrine therapy or chemotherapy) has been allocated according to 16α-18F-fluoro-17β-oestradiol (18F-FES) Positron Emission Tomography/Computed Tomography (PET/CT) results and circulating tumor biomarkers, clinicians will decide which treatment to use.