{"groups":[{"description":"To determine the dose of mitoxantrone that can be safely administered with pentostatin, cyclosphosphamide, and rituximab in previously treated patient with CLL and other low grade B-cell malignancies.","id":"FG000","title":"Pentostatin,Cyclophosphamide,Rituximab & Mitoxantrone"}],"periods":[{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"1"}],"type":"Deemed ineligible"},{"reasons":[{"groupId":"FG000","numSubjects":"6"}],"type":"Adverse Event"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"50"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"43"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"7"}],"type":"NOT COMPLETED"}],"title":"Overall Study"}]}