NCT02048813 2025-11-28Ibrutinib and Rituximab Compared With Fludarabine Phosphate, Cyclophosphamide, and Rituximab in Treating Patients With Untreated Chronic Lymphocytic Leukemia or Small Lymphocytic LymphomaNational Cancer Institute (NCI)Phase 3 Active not recruiting529 enrolled 12 charts 2 FDA