Overview Phase IB Study to Evaluate RAD1901 on the Availability of Estrogen Receptor Binding Sites in Metastatic Breast Cancer Status: Completed Trial end date: 2019-10-18 Target enrollment: Participant gender: Summary The purpose of this study is to visualize and quantify ER-binding sites during treatment with Elacestrant (RAD1901) Phase: Phase 1 Details Lead Sponsor: Radius Health, Inc.Radius Pharmaceuticals, Inc.Treatments: Estrogens