{"groups":[{"description":"Letrozole only","id":"FG000","title":"Letrozole"},{"description":"Standard of Care-Patients receive no treatment.","id":"FG001","title":"Standard of Care"}],"periods":[{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"2"}],"type":"Progression"},{"reasons":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"3"}],"type":"Withdrawal by Subject"},{"reasons":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"0"}],"type":"Adverse Event"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"4"},{"groupId":"FG001","numSubjects":"5"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"0"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"3"},{"groupId":"FG001","numSubjects":"5"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}],"preAssignmentDetails":"physical exam, vital signs, ECG, laboratory tests, chest x-ray, CT or MRI","recruitmentDetails":"Randomized (adaptive), open-label phase II of Letrozole (experimental) vs. observation (control) in patients with clinical stage I or stage II leiomyosarcoma"}