CLL11: A Study of Rituximab With Chlorambucil or Chlorambucil Alone in Patients With Previously Untreated Chronic Lymphocytic Leukemia (Stage 1b)
Lymphocytic Leukemia, Chronic
About this trial
This is an interventional treatment trial for Lymphocytic Leukemia, Chronic
Eligibility Criteria
Inclusion Criteria:
- Adults >/=18 years
- Documented Cluster of Differentiation Antigen 20 (CD20) + B-Cell Chronic Lymphocytic Lymphoma (B-CLL)
- Previously untreated Chronic Lymphocytic Leukemia (CLL) requiring treatment according to the National Cancer Institute (NCI) criteria
- Total Cumulative Illness Rating Scale (CIRS) > 6 and/or creatinine clearance < 70 ml/min
Exclusion Criteria:
- Prior CLL therapy
- Transformation of CLL to aggressive Non-Hodgkin's Lymphoma (NHL) (Richter's transformation)
- History of other malignancy unless the malignancy has been in remission without treatment for >/=2 years prior to enrolment, and except for carcinoma in situ of the cervix, basal or squamous cell skin cancer, surgically treated low-grade prostate cancer, or ductal carcinoma in situ (DCIS) of the breast treated with lymphectomy alone
- Positive hepatitis serology (HBV, HCV) or positive HIV or Human T Cell Leukemia Virus (HTLV) testing
- Patients with active infection requiring systemic treatment
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Active Comparator
Active Comparator
obinutuzumab + chlorambucil (GClb)
rituximab + chlorambucil (RClb)
Chlorambucil (Clb)
Participants received 1000 mg obinutuzumab intravenous (IV) infusion, on Days 1 [first infusion split 100 mg on Day 1 and 900 mg on Day 2 as per protocol amendment], 8 and 15 in Cycle 1 and Day 1 in Cycles 2-6 (28-day cycles) plus chlorambucil 0.5 mg/kg orally on Day 1 and 15 of each 28-day cycle (6 Cycles).
Participants received 375 mg/m^2 rituximab IV infusion on Day 1 of Cycle 1 then 500 mg/m^2 IV infusions on Day 1 of Cycles 2-6 (28-day cycles) plus chlorambucil 0.5 mg/kg orally on Day 1 and 15 of each 28-day cycle (6 cycles).
Participants received chlorambucil 0.5 mg/kg orally on Day 1 and 15 of each 28-day cycle (6 Cycles). Participants with Progressive Disease or within 6 months of follow-up were allowed to cross over to receive obinutuzumab + chlorambucil.