{"groups":[{"description":"Patients undergo \\[\\^18F\\] FES PET scan. Patients also undergo standard clinical fludeoxyglucose F 18 (FDG)-PET or FDG-PET/CT scan up to 14 days prior to \\[\\^18F\\] FES PET scan.\n\nPatients begin clinically indicated endocrine therapy.\n\nPatients are followed-up to determine response on the therapy for 6 months using clinical exams, tumor marker assays, conventional imaging and standard clinical FDG PET/CT.\n\nlaboratory biomarker analysis: Correlative studies","id":"FG000","title":"Diagnostic (FES)"}],"periods":[{"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"20"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"15"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"5"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}]}