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CompletedNCT02242942Updated Nov 6, 2025Results posted

Comparison of the Treatments of Obinutuzumab + Venetoclax Versus Obinutuzumab + Chlorambucil in Patients With Chronic Lymphocytic Leukemia

A Phase 3 interventional study of Chlorambucil and Venetoclax in Lymphocytic Leukemia, Chronic, sponsored by Hoffmann-La Roche. Completed at 122 sites in 21 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-11-06.

Sponsored by Hoffmann-La Roche · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
445
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This open-label, multicenter, randomized Phase III study is designed to compare the efficacy and safety of a combined regimen of obinutuzumab and venetoclax versus obinutuzumab + chlorambucil in participants with chronic lymphocytic leukemia (CLL) and coexisting medical conditions. The time on study treatment was approximately one year and the follow-up period will be up to 9 years

02

Conditions studied

  • Lymphocytic Leukemia, Chronic
03

In context

Leukemia, Lymphocytic, Chronic, B-Cell

1,603 studies on the registry are indexed under Leukemia, Lymphocytic, Chronic, B-Cell; 243 are open to participants now.

This study's enrollment of 445 is above the median of 40 across 1,325 interventional studies indexed under Leukemia, Lymphocytic, Chronic, B-Cell.

Browse Leukemia, Lymphocytic, Chronic, B-Cell studies →

Lead sponsor

Hoffmann-La Roche is the lead sponsor of 2,061 studies on the registry; 85 are open to participants now.

Of its 319 completed or terminated interventional studies of FDA-regulated products, 239 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Documented previously untreated CLL according to the International Workshop on Chronic Lymphocytic Leukemia (IWCLL) criteria
  • CLL requiring treatment according to IWCLL criteria
  • Total Cumulative Illness Rating Scale (CIRS score) greater than (>) 6
  • Adequate marrow function independent of growth factor or transfusion support within 2 weeks of screening as per protocol, unless cytopenia is due to marrow involvement of CLL
  • Adequate liver function
  • Life expectancy > 6 months
  • Agreement to use highly effective contraceptive methods per protocol

Exclusion criteria

Exclusion Criteria:

  • Transformation of CLL to aggressive Non-Hodgkin's lymphoma (Richter's transformation or pro-lymphocytic leukemia)
  • Known central nervous system involvement
  • Participants with a history of confirmed progressive multifocal leukoencephalopathy (PML)
  • An individual organ/ system impairment score of 4 as assessed by the CIRS definition limiting the ability to receive the treatment regimen of this trial with the exception of eyes, ears, nose, throat organ system
  • Participants with uncontrolled autoimmune hemolytic anemia or immune thrombocytopenia
  • Inadequate renal function
  • History of prior malignancy, except for conditions as listed in the protocol if participants have recovered from the acute side effects incurred as a result of previous therapy
  • Use of investigational agents or concurrent anti-cancer treatment within the last 4 weeks of registration
  • Participants with active bacterial, viral, or fungal infection requiring systemic treatment within the last two months prior to registration
  • History of severe allergic or anaphylactic reactions to humanized or murine monoclonal antibodies or known sensitivity or allergy to murine products
  • Hypersensitivity to chlorambucil, obinutuzumab, or venetoclax or to any of the excipients
  • Pregnant women and nursing mothers
  • Positive test results for chronic hepatitis B virus (HBV) infection (defined as positive hepatitis B surface antigen [HBsAg] serology) or positive test result for hepatitis C (hepatitis C virus [HCV] antibody serology testing)
  • Participants with known infection with human immunodeficiency virus (HIV) or human T-cell leukemia virus-1 (HTLV-1)
  • Requires the use of warfarin, marcumar, or phenprocoumon
  • Received agents known to be strong and moderate Cytochrome P450 3A inhibitors or inducers within 7 days prior to the first dose of study drug
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
445 participants (actual)

Study arms

  • Experimental
    Safety Run-in Obinutuzumab + Venetoclax

    Subjects received obinutuzumab for 6 cycles and venetoclax for 12 cycles. Cycles comprised of 28 days.

    Drug: Venetoclax · Drug: Obinutuzumab

  • Experimental
    Obinutuzumab + Chlorambucil

    Participants will receive obinutuzumab for 6 cycles and chlorambucil for 12 cycles. Cycles will comprise 28 days.

    Drug: Chlorambucil · Drug: Obinutuzumab

  • Experimental
    Obinutuzumab + Venetoclax

    Participants will receive obinutuzumab for 6 cycles and venetoclax for 12 cycles. Cycles will comprise 28 days.

    Drug: Venetoclax · Drug: Obinutuzumab

Interventions

  • DrugChlorambucil

    Chlorambucil 0.5 milligrams per kilogram (mg/kg) orally at Day 1 and Day 15 at of each 28 day cycle for 12 cycles.

  • DrugVenetoclax

    Venetoclax, oral tablet: 20 mg daily during Cycle 1, Day 22-28; 50 mg daily during Cycle 2, Day 1-7; 100 mg daily during Cycle 2, Day 8-14; 200 mg daily during Cycle 2, Day 15-21; 400 mg daily during Cycle 2, Day 22-28 and on Day 1-28 for all subsequent cycles until the end of Cycle 12.

    Also known as: ABT-0199, GDC-0199

  • DrugObinutuzumab

    Obinutuzumab, IV infusion: 100 mg or 1000 mg, depending on splitting rules, at Cycle 1, Day 1 (if 100 mg was received on Day 1, 900 mg will be administered on Cycle 1, Day 2); 1000 mg at Cycle 1, Day 8 and Day 15; 1000 mg at Day 1 for all subsequent cycles until the end of Cycle 6

    Also known as: GA-101; Gazyva

06

What researchers measure

Primary outcomes

  1. Progression Free Survival (PFS) Based on Investigator Assessment According to IWCLL Criteria

    PFS was determined according to IWCLL 2008 criteria and defined as the time from randomization to the first occurrence of PD or death from any cause. Disease progression was characterized by at least one of the following: 1) \>/= 50% increase in the absolute number of circulating lymphocytes to at least 5\*10\^9/L, 2) Appearance of new palpable lymph nodes (\> 15 mm in longest diameter) or any new extra-nodal lesion; 3) \>/= 50% increase in the longest diameter of any previous site of lymphadenopathy; 4) \>/= 50% increase in the enlargement of the liver and/or spleen; 5) Transformation to a more aggressive histology.

    Time frame: Baseline until disease progression or death up to approximately 3.75 years

Secondary outcomes

  1. Progression Free Survival (PFS) Based on Institutional Review Committee (IRC)-Assessments According to International Workshop on Chronic Lymphocytic Leukemia (IWCLL) Criteria

    PFS was determined according to IWCLL 2008 criteria and defined as the time from randomization to the first occurrence of progressive disease (PD) or death from any cause. Disease progression was characterized by at least one of the following: 1) \>/= 50% increase in the absolute number of circulating lymphocytes to at least 5\*10\^9/L, 2) Appearance of new palpable lymph nodes (\> 15 mm in longest diameter) or any new extra-nodal lesion; 3) \>/= 50% increase in the longest diameter of any previous site of lymphadenopathy; 4) \>/= 50% increase in the enlargement of the liver and/or spleen; 5) Transformation to a more aggressive histology.

    Time frame: Baseline until disease progression or death up to approximately 3.75 years

  2. Percentage of Participants With an Overall Response (OR) at Completion of Treatment, as Determined by the Investigator According to IWCLL Criteria

    OR was defined as complete response (CR), CR with incomplete bone marrow recovery (CRi), or partial response (PR) according to IWCLL 2008 criteria. CR requires all of the following: peripheral blood lymphocytes below 4x10\^9/L, absence of lymphadenopathy by physical examination and computed tomography (CT) scan, no hepatomegaly or splenomegaly, absence of disease or constitutional symptoms, blood counts of neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L, bone marrow at least normocellular for age without clonal infiltrate (except for Cri). PR: two of the following features for at least 2 months: \>/= 50% decrease in peripheral blood lymphocyte count from the pretreatment value, \>/=50% reduction in lymphadenopathy, \>/=50% reduction of liver and/or spleen enlargement, and at least one of the following blood counts: neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L.

    Time frame: At the completion of treatment assessment 3 months after treatment completion (at approximately 15 months)

  3. Percentage of Participants With a Complete Response Rate (CRR) at the Completion of Treatment Assessment as Determined by the Investigator According to IWCLL Criteria

    CRR was defined as the rate of a clinical response of CR or CRi according to IWCLL 2008 criteria. CR requires all of the following: peripheral blood lymphocytes below 4x10\^9/L, absence of lymphadenopathy by physical examination and CT scan, no hepatomegaly or splenomegaly, absence of disease or constitutional symptoms, blood counts of neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L, bone marrow at least normocellular for age without clonal infiltrate (except for Cri).

    Time frame: At the completion of treatment assessment 3 months after treatment completion (at approximately 15 months)

  4. Percentage of Participants With Minimal Residual Disease (MRD) Negativity in Peripheral Blood as Measured by Allele-Specific Oligonucleotide Polymerase Chain Reaction (ASO-PCR) at Completion of Treatment

    MRD negativity was defined as having \< 1 CLL cell per 10,000 leucocytes in peripheral blood.

    Time frame: At the completion of treatment assessment 3 months after treatment completion (at approximately 15 months)

  5. Percentage of Participants With MRD Negativity in Bone Marrow as Measured by ASO-PCR at Completion of Treatment

    MRD negativity was defined as having \< 1 CLL cell per 10,000 leucocytes in bone marrow.

    Time frame: At the completion of treatment assessment 3 months after treatment completion (at approximately 15 months)

  6. Overall Survival (OS)

    OS was defined as the time between the date of randomization and the date of death due to any cause.

    Time frame: Baseline until death, up to approximately 10.75 years

  7. Percentage of Participants With MRD Negativity in Peripheral Blood as Measured by ASO-PCR at Completion of Combination Treatment Assessment

    MRD negativity was defined as having \< 1 CLL cell per 10,000 leucocytes in peripheral blood.

    Time frame: Day 1 Cycle 9 or 3 months after last IV infusion, approximately 9 months

  8. Percentage of Participants With MRD Negativity in Bone Marrow as Measured by ASO-PCR at Completion of Combination Treatment Assessment

    MRD negativity was defined as having \< 1 CLL cell per 10,000 leucocytes in bone marrow.

    Time frame: Day 1 Cycle 9 or 3 months after last IV infusion at approximately 9 months

  9. Percentage of Participants With OR at Completion of Combination Treatment Response Assessment

    OR was defined as CR, CRi or PR according to IWCLL 2008 criteria. CR required all of the following: peripheral blood lymphocytes below 4x10\^9/L, absence of lymphadenopathy by physical examination, no hepatomegaly or splenomegaly, absence of disease or constitutional symptoms, blood counts of neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L. PR: two of the following features for at least 2 months: \>/= 50% decrease in peripheral blood lymphocyte count from the pretreatment value, \>/=50% reduction in lymphadenopathy, \>/=50% reduction of liver and/or spleen enlargement, and at least one of the following blood counts: neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L.

    Time frame: Day 1 Cycle 7 or 28 days after last IV infusion, approximately 6 months

  10. Duration of Objective Response (DOR)

    PD was defined as lymphadenopathy, \>=50% increase in liver or spleen size, \>=50% increase in lymphocyte count, transformation to a more aggressive histology or occurrence of cytopenia.

    Time frame: Time from the first occurrence of a documented objective response to the time of PD as determined by the investigator or death from any cause, up to approximately 10.75 years

  11. Percentage of Participants By Best Response Achieved (CR, CRi, PR, Stable Disease (SD), or PD)

    CR: peripheral blood lymphocytes below 4x10\^9/L, absence of lymphadenopathy by physical examination and CT scan, no hepatomegaly or splenomegaly, absence of disease or constitutional symptoms, blood counts of neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L, bone marrow at least normocellular for age without clonal infiltrate (except for Cri). PR: any two for at least 2 months: \>/= 50% decrease in peripheral blood lymphocyte count from the pretreatment value, \>/=50% reduction in lymphadenopathy, \>/=50% reduction of liver and/or spleen enlargement, and at least one of the following blood counts: neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L. PD: lymphadenopathy, \>=50% increase in liver or spleen size, \>=50% increase in lymphocyte count, transformation to a more aggressive histology or occurrence of cytopenia. SD: a non-response and used to characterize participants who did not achieve a CR or a PR, and who have not exhibited PD.

    Time frame: Baseline up to the completion of treatment assessment 3 months after treatment completion (up to approximately 15 months)

  12. Event-Free Survival

    Time frame: Time between date of randomization and the date of disease progression/relapse on the basis of investigator-assessment, death, or start of a new anti-leukemic therapy, up to 10.75 years

  13. Time to Next Anti-Leukemic Treatment

    Time frame: Time between the date of randomization and the date of first intake of new anti-leukemic therapy, up to 10.75 years

  14. Number of Participants With Adverse Events (AEs)

    An AE is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as AEs.

    Time frame: Up to approximately 10.75 years

  15. Percentage of Participants With CD19 + /CD5+ B Cells or CD14+ Monocytes

    Time frame: Baseline up to approximately 10.75 years

  16. Percentage of Participants With Human-Anti-Human Antibodies

    Time frame: Baseline up to approximately 10.75 years

  17. Percentage of Participants Recorded as Premature Study Withdrawals

    Time frame: Up to approximately 10.75 years

  18. Plasma Concentrations of Venetoclax

    Time frame: Pre-venetoclax dose (0 hour) and 4 hours post- venetoclax dose on Day 1 Cycle 4

  19. Serum Concentrations of Obinutuzumab

    Time frame: Pre-obinutuzumab infusion (0 hour) and end of obinutuzumab infusion on Day 1 Cycle 4

  20. Change From Baseline in M.D. Anderson Symptom Inventory-CLL (MDASI-CLL) Score

    The MDASI-CLL is a questionnaire of 25 items related to CLL specific symptoms that a participant may have experienced in the past 24 hours. Participants were asked to rate the severity of 13 symptoms called mean core symptom severity (i.e., pain, fatigue, nausea, disturbed sleep, distressed, shortness of breath, remembering things, lack of appetite, drowsy, dry mouth, sadness, vomiting, and numbness or tingling), 6 disease-specific symptoms called mean module symptom severity (night sweats, fevers and chills, lymph node swelling, diarrhea, easy bruising or bleeding, and constipation) and 6 mean interference on life questions (i.e., general activity, walking, work, mood, relations with other people, and enjoyment of life) on a scale from 0 to 10 with 0 indicating that the symptom is "not present" or "did not interfere" with the participant's activities and 10 indicating "as bad as you can imagine" or "interfered completely". Scores were averaged (range 0 to 10) for each of three parts.

    Time frame: Baseline up to approximately 10.75 years

  21. Change From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQC30)

    The EORTC QLQ-C30 is a validated and reliable self-report measure consisting of 30 questions incorporated into five functional scales (physical, role, cognitive, emotional, and social scales), three symptom scales (fatigue, pain, nausea, and vomiting scales), and a global health status/global quality-of-life scale. The remaining single items (dyspnea, appetite loss, sleep disturbance, constipation, and diarrhea) assess the additional symptoms experienced by patients with cancer and the perceived financial burden of treatment. The 28 function and symptom items were scored on a 4-point scale that ranged from "not at all" to "very much," and the 2 global health status/global quality-of-life items were scored on a 7-point scale that ranged from "very poor" to "excellent." Raw average scale scores were linearly transformed to range 0-100 with higher scores indicating higher response levels (i.e., higher functioning, higher symptom severity).

    Time frame: Baseline up to approximately 10.75 years

  22. Change From Baseline in EuroQol 5 Dimension Questionnaire (EQ-5D-3L)

    The EQ-5D-3L questionnaire is a generic, preference based health utility measure that assesses 5 health states (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) and is used to build a composite of the patient's health status. The EQ-5D-3L was employed in this study to calculate health utilities for economic modeling, which ranged 0-1. The EQ-5D-3L also contained a visual analog scale (VAS) to assess the participant's overall health, which ranged from 0-100 with a higher score indicating a worse health status.

    Time frame: Baseline up to approximately 10.75 years

07

Results

Posted Oct 1, 2019

Participant flow

Participant flow — Overall Study
MilestoneObinutuzumab + ChlorambucilObinutuzumab + VenetoclaxSafety Run-in Obinutuzumab + Venetoclax
Started21621613
Treated21421213
Completed000
Not completed21621613
Withdrew: Death17202
Withdrew: Physician decision100
Withdrew: Withdrawal by subject8100
Withdrew: On-going in study19018611

Outcome measures

SecondaryProgression Free Survival (PFS) Based on Institutional Review Committee (IRC)-Assessments According to International Workshop on Chronic Lymphocytic Leukemia (IWCLL) Criteria

PFS was determined according to IWCLL 2008 criteria and defined as the time from randomization to the first occurrence of progressive disease (PD) or death from any cause. Disease progression was characterized by at least one of the following: 1) \>/= 50% increase in the absolute number of circulating lymphocytes to at least 5\*10\^9/L, 2) Appearance of new palpable lymph nodes (\> 15 mm in longest diameter) or any new extra-nodal lesion; 3) \>/= 50% increase in the longest diameter of any previous site of lymphadenopathy; 4) \>/= 50% increase in the enlargement of the liver and/or spleen; 5) Transformation to a more aggressive histology.

Time frame:
Baseline until disease progression or death up to approximately 3.75 years
Reported as:
Median · months
Progression Free Survival (PFS) Based on Institutional Review Committee (IRC)-Assessments According to International Workshop on Chronic Lymphocytic Leukemia (IWCLL) Criteria
monthsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
Progression Free Survival (PFS) Based on Institutional Review Committee (IRC)-Assessments According to International Workshop on Chronic Lymphocytic Leukemia (IWCLL) CriteriaNA (31.1 to NA)NA (NA to NA)
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Log Rank · p = <0.0001 · Hazard ratio (hr): 0.33 · 95% CI 0.22 to 0.51Hazard ratios were estimated by Cox regression model. Stratification factors: Binet and Geographic region.
PrimaryProgression Free Survival (PFS) Based on Investigator Assessment According to IWCLL Criteria

PFS was determined according to IWCLL 2008 criteria and defined as the time from randomization to the first occurrence of PD or death from any cause. Disease progression was characterized by at least one of the following: 1) \>/= 50% increase in the absolute number of circulating lymphocytes to at least 5\*10\^9/L, 2) Appearance of new palpable lymph nodes (\> 15 mm in longest diameter) or any new extra-nodal lesion; 3) \>/= 50% increase in the longest diameter of any previous site of lymphadenopathy; 4) \>/= 50% increase in the enlargement of the liver and/or spleen; 5) Transformation to a more aggressive histology.

Time frame:
Baseline until disease progression or death up to approximately 3.75 years
Reported as:
Median · months
Progression Free Survival (PFS) Based on Investigator Assessment According to IWCLL Criteria
monthsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
Progression Free Survival (PFS) Based on Investigator Assessment According to IWCLL CriteriaNA (31.1 to NA)NA (NA to NA)
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Log Rank · p = <0.0001 · Hazard ratio (hr): 0.35 · 95% CI 0.23 to 0.53Hazard Ratios were estimated by Cox regression model. Stratification factors: Binet and Geographic region.
SecondaryPercentage of Participants With an Overall Response (OR) at Completion of Treatment, as Determined by the Investigator According to IWCLL Criteria

OR was defined as complete response (CR), CR with incomplete bone marrow recovery (CRi), or partial response (PR) according to IWCLL 2008 criteria. CR requires all of the following: peripheral blood lymphocytes below 4x10\^9/L, absence of lymphadenopathy by physical examination and computed tomography (CT) scan, no hepatomegaly or splenomegaly, absence of disease or constitutional symptoms, blood counts of neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L, bone marrow at least normocellular for age without clonal infiltrate (except for Cri). PR: two of the following features for at least 2 months: \>/= 50% decrease in peripheral blood lymphocyte count from the pretreatment value, \>/=50% reduction in lymphadenopathy, \>/=50% reduction of liver and/or spleen enlargement, and at least one of the following blood counts: neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L.

Time frame:
At the completion of treatment assessment 3 months after treatment completion (at approximately 15 months)
Reported as:
Number · percentage of participants
Percentage of Participants With an Overall Response (OR) at Completion of Treatment, as Determined by the Investigator According to IWCLL Criteria
percentage of participantsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
Percentage of Participants With an Overall Response (OR) at Completion of Treatment, as Determined by the Investigator According to IWCLL Criteria71.3 (64.77 to 77.23)84.7 (79.22 to 89.24)
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Cochran-Mantel-Haenszel · p = 0.0007 (P-value was assessed using Cochran-Mantel-Haenszel (CMH) test stratified by the IvRS randomization stratification factors.) · Difference in response rates: 13.43 · 95% CI 5.47 to 21.3895% Confidence Interval (CI) for difference in rates were constructed using Anderson-Hauck method.
SecondaryPercentage of Participants With a Complete Response Rate (CRR) at the Completion of Treatment Assessment as Determined by the Investigator According to IWCLL Criteria

CRR was defined as the rate of a clinical response of CR or CRi according to IWCLL 2008 criteria. CR requires all of the following: peripheral blood lymphocytes below 4x10\^9/L, absence of lymphadenopathy by physical examination and CT scan, no hepatomegaly or splenomegaly, absence of disease or constitutional symptoms, blood counts of neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L, bone marrow at least normocellular for age without clonal infiltrate (except for Cri).

Time frame:
At the completion of treatment assessment 3 months after treatment completion (at approximately 15 months)
Reported as:
Number · percentage of participants
Percentage of Participants With a Complete Response Rate (CRR) at the Completion of Treatment Assessment as Determined by the Investigator According to IWCLL Criteria
percentage of participantsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
Percentage of Participants With a Complete Response Rate (CRR) at the Completion of Treatment Assessment as Determined by the Investigator According to IWCLL Criteria23.1 (17.70 to 29.35)49.5 (42.68 to 56.40)
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Cochran-Mantel-Haenszel · p = <0.0001 (P-value was assessed using CMH test stratified by the IvRS randomization stratification factors.) · Difference in response rates: 26.39 · 95% CI 17.41 to 35.3695% CI for difference in rates were constructed using Anderson-Hauck method.
SecondaryPercentage of Participants With Minimal Residual Disease (MRD) Negativity in Peripheral Blood as Measured by Allele-Specific Oligonucleotide Polymerase Chain Reaction (ASO-PCR) at Completion of Treatment

MRD negativity was defined as having \< 1 CLL cell per 10,000 leucocytes in peripheral blood.

Time frame:
At the completion of treatment assessment 3 months after treatment completion (at approximately 15 months)
Reported as:
Number · percentage of participants
Percentage of Participants With Minimal Residual Disease (MRD) Negativity in Peripheral Blood as Measured by Allele-Specific Oligonucleotide Polymerase Chain Reaction (ASO-PCR) at Completion of Treatment
percentage of participantsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
Percentage of Participants With Minimal Residual Disease (MRD) Negativity in Peripheral Blood as Measured by Allele-Specific Oligonucleotide Polymerase Chain Reaction (ASO-PCR) at Completion of Treatment35.2 (28.83 to 41.95)75.5 (69.17 to 81.05)
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Cochran-Mantel-Haenszel · p = <0.0001 · Difference in mrd negative rates: 40.28 · 95% CI 31.45 to 49.1095% CI for difference in rates were constructed using Anderson-Hauck method.
SecondaryPercentage of Participants With MRD Negativity in Bone Marrow as Measured by ASO-PCR at Completion of Treatment

MRD negativity was defined as having \< 1 CLL cell per 10,000 leucocytes in bone marrow.

Time frame:
At the completion of treatment assessment 3 months after treatment completion (at approximately 15 months)
Reported as:
Number · percentage of participants
Percentage of Participants With MRD Negativity in Bone Marrow as Measured by ASO-PCR at Completion of Treatment
percentage of participantsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
Percentage of Participants With MRD Negativity in Bone Marrow as Measured by ASO-PCR at Completion of Treatment17.1 (12.36 to 22.83)56.9 (50.05 to 63.64)
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Cochran-Mantel-Haenszel · p = <0.0001 · Difference in mrd negative rates: 39.81 · 95% CI 31.27 to 48.3695% CI for difference in rates were constructed using Anderson-Hauck method.
SecondaryOverall Survival (OS)

OS was defined as the time between the date of randomization and the date of death due to any cause.

Time frame:
Baseline until death, up to approximately 10.75 years

Results for this outcome have not been posted.

SecondaryPercentage of Participants With MRD Negativity in Peripheral Blood as Measured by ASO-PCR at Completion of Combination Treatment Assessment

MRD negativity was defined as having \< 1 CLL cell per 10,000 leucocytes in peripheral blood.

Time frame:
Day 1 Cycle 9 or 3 months after last IV infusion, approximately 9 months
Reported as:
Number · percentage of participants
Percentage of Participants With MRD Negativity in Peripheral Blood as Measured by ASO-PCR at Completion of Combination Treatment Assessment
percentage of participantsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
Percentage of Participants With MRD Negativity in Peripheral Blood as Measured by ASO-PCR at Completion of Combination Treatment Assessment38.4 (31.91 to 45.27)71.3 (64.77 to 77.23)
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Chi-squared · p = <0.0001 · Difference in mrd negative rates: 32.87 · 95% CI 23.76 to 41.9895% CI for difference in rates were constructed using Anderson-Hauck method.
SecondaryPercentage of Participants With MRD Negativity in Bone Marrow as Measured by ASO-PCR at Completion of Combination Treatment Assessment

MRD negativity was defined as having \< 1 CLL cell per 10,000 leucocytes in bone marrow.

Time frame:
Day 1 Cycle 9 or 3 months after last IV infusion at approximately 9 months
Reported as:
Number · percentage of participants
Percentage of Participants With MRD Negativity in Bone Marrow as Measured by ASO-PCR at Completion of Combination Treatment Assessment
percentage of participantsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
Percentage of Participants With MRD Negativity in Bone Marrow as Measured by ASO-PCR at Completion of Combination Treatment Assessment13.0 (8.79 to 18.19)51.4 (44.51 to 58.23)
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Chi-squared · p = <0.0001 · Difference in mrd negative rates: 38.43 · 95% CI 30.15 to 46.7195% CI for difference in rates were constructed using Anderson-Hauck method.
SecondaryPercentage of Participants With OR at Completion of Combination Treatment Response Assessment

OR was defined as CR, CRi or PR according to IWCLL 2008 criteria. CR required all of the following: peripheral blood lymphocytes below 4x10\^9/L, absence of lymphadenopathy by physical examination, no hepatomegaly or splenomegaly, absence of disease or constitutional symptoms, blood counts of neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L. PR: two of the following features for at least 2 months: \>/= 50% decrease in peripheral blood lymphocyte count from the pretreatment value, \>/=50% reduction in lymphadenopathy, \>/=50% reduction of liver and/or spleen enlargement, and at least one of the following blood counts: neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L.

Time frame:
Day 1 Cycle 7 or 28 days after last IV infusion, approximately 6 months
Reported as:
Number · percentage of participants
Percentage of Participants With OR at Completion of Combination Treatment Response Assessment
percentage of participantsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
Percentage of Participants With OR at Completion of Combination Treatment Response Assessment86.6 (81.29 to 90.82)88.4 (83.39 to 92.37)
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Cochran-Mantel-Haenszel · p = 0.5612 (P-value was assessed using Cochran-Mantel-Haenszel (CMH) test stratified by the IvRS randomization stratification factors.) · Difference in response rates: 1.85 · 95% CI -4.63 to 8.3395% Confidence Interval (CI) for difference in rates were constructed using Anderson-Hauck method.
SecondaryDuration of Objective Response (DOR)

PD was defined as lymphadenopathy, \>=50% increase in liver or spleen size, \>=50% increase in lymphocyte count, transformation to a more aggressive histology or occurrence of cytopenia.

Time frame:
Time from the first occurrence of a documented objective response to the time of PD as determined by the investigator or death from any cause, up to approximately 10.75 years

Results for this outcome have not been posted.

SecondaryPercentage of Participants By Best Response Achieved (CR, CRi, PR, Stable Disease (SD), or PD)

CR: peripheral blood lymphocytes below 4x10\^9/L, absence of lymphadenopathy by physical examination and CT scan, no hepatomegaly or splenomegaly, absence of disease or constitutional symptoms, blood counts of neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L, bone marrow at least normocellular for age without clonal infiltrate (except for Cri). PR: any two for at least 2 months: \>/= 50% decrease in peripheral blood lymphocyte count from the pretreatment value, \>/=50% reduction in lymphadenopathy, \>/=50% reduction of liver and/or spleen enlargement, and at least one of the following blood counts: neutrophils \>1.5\*10\^9/L, platelets \>100\*10\^9/L and hemoglobin \>110 g/L. PD: lymphadenopathy, \>=50% increase in liver or spleen size, \>=50% increase in lymphocyte count, transformation to a more aggressive histology or occurrence of cytopenia. SD: a non-response and used to characterize participants who did not achieve a CR or a PR, and who have not exhibited PD.

Time frame:
Baseline up to the completion of treatment assessment 3 months after treatment completion (up to approximately 15 months)
Reported as:
Number · percentage of participants
Percentage of Participants By Best Response Achieved (CR, CRi, PR, Stable Disease (SD), or PD)
percentage of participantsObinutuzumab + ChlorambucilObinutuzumab + Venetoclax
CR56.070.4
CRi5.67.9
PR29.213.4
SD1.90.5
PD0.50.5
Statistical analysis
  • Obinutuzumab + Chlorambucil vs Obinutuzumab + Venetoclax · Cochran-Mantel-Haenszel · p = 0.7169 · Difference in response rates: 0.93 · 95% CI -4.66 to 6.5195% CI for difference in rates were constructed using Anderson-Hauck method.
SecondaryEvent-Free Survival
Time frame:
Time between date of randomization and the date of disease progression/relapse on the basis of investigator-assessment, death, or start of a new anti-leukemic therapy, up to 10.75 years

Results for this outcome have not been posted.

SecondaryTime to Next Anti-Leukemic Treatment
Time frame:
Time between the date of randomization and the date of first intake of new anti-leukemic therapy, up to 10.75 years

Results for this outcome have not been posted.

SecondaryNumber of Participants With Adverse Events (AEs)

An AE is any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Preexisting conditions which worsen during a study are also considered as AEs.

Time frame:
Up to approximately 10.75 years

Results for this outcome have not been posted.

SecondaryPercentage of Participants With CD19 + /CD5+ B Cells or CD14+ Monocytes
Time frame:
Baseline up to approximately 10.75 years

Results for this outcome have not been posted.

SecondaryPercentage of Participants With Human-Anti-Human Antibodies
Time frame:
Baseline up to approximately 10.75 years

Results for this outcome have not been posted.

SecondaryPercentage of Participants Recorded as Premature Study Withdrawals
Time frame:
Up to approximately 10.75 years

Results for this outcome have not been posted.

SecondaryPlasma Concentrations of Venetoclax
Time frame:
Pre-venetoclax dose (0 hour) and 4 hours post- venetoclax dose on Day 1 Cycle 4
Reported as:
Mean · μg/mL
Plasma Concentrations of Venetoclax
μg/mLObinutuzumab + Venetoclax
Pre-Dose0.578 ± 0.533
4 hours Post-Dose1.21 ± 0.765
SecondarySerum Concentrations of Obinutuzumab
Time frame:
Pre-obinutuzumab infusion (0 hour) and end of obinutuzumab infusion on Day 1 Cycle 4
Reported as:
Mean · μg/mL
Serum Concentrations of Obinutuzumab
μg/mLObinutuzumab + Venetoclax
Pre-Dose258 ± 140
4 hours Post-Dose568 ± 187
SecondaryChange From Baseline in M.D. Anderson Symptom Inventory-CLL (MDASI-CLL) Score

The MDASI-CLL is a questionnaire of 25 items related to CLL specific symptoms that a participant may have experienced in the past 24 hours. Participants were asked to rate the severity of 13 symptoms called mean core symptom severity (i.e., pain, fatigue, nausea, disturbed sleep, distressed, shortness of breath, remembering things, lack of appetite, drowsy, dry mouth, sadness, vomiting, and numbness or tingling), 6 disease-specific symptoms called mean module symptom severity (night sweats, fevers and chills, lymph node swelling, diarrhea, easy bruising or bleeding, and constipation) and 6 mean interference on life questions (i.e., general activity, walking, work, mood, relations with other people, and enjoyment of life) on a scale from 0 to 10 with 0 indicating that the symptom is "not present" or "did not interfere" with the participant's activities and 10 indicating "as bad as you can imagine" or "interfered completely". Scores were averaged (range 0 to 10) for each of three parts.

Time frame:
Baseline up to approximately 10.75 years

Results for this outcome have not been posted.

SecondaryChange From Baseline in European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQC30)

The EORTC QLQ-C30 is a validated and reliable self-report measure consisting of 30 questions incorporated into five functional scales (physical, role, cognitive, emotional, and social scales), three symptom scales (fatigue, pain, nausea, and vomiting scales), and a global health status/global quality-of-life scale. The remaining single items (dyspnea, appetite loss, sleep disturbance, constipation, and diarrhea) assess the additional symptoms experienced by patients with cancer and the perceived financial burden of treatment. The 28 function and symptom items were scored on a 4-point scale that ranged from "not at all" to "very much," and the 2 global health status/global quality-of-life items were scored on a 7-point scale that ranged from "very poor" to "excellent." Raw average scale scores were linearly transformed to range 0-100 with higher scores indicating higher response levels (i.e., higher functioning, higher symptom severity).

Time frame:
Baseline up to approximately 10.75 years

Results for this outcome have not been posted.

SecondaryChange From Baseline in EuroQol 5 Dimension Questionnaire (EQ-5D-3L)

The EQ-5D-3L questionnaire is a generic, preference based health utility measure that assesses 5 health states (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression) and is used to build a composite of the patient's health status. The EQ-5D-3L was employed in this study to calculate health utilities for economic modeling, which ranged 0-1. The EQ-5D-3L also contained a visual analog scale (VAS) to assess the participant's overall health, which ranged from 0-100 with a higher score indicating a worse health status.

Time frame:
Baseline up to approximately 10.75 years

Results for this outcome have not been posted.

Adverse events

Collected over All AEs from first dose until 28 days after the last dose up to 1 year. Grade 3-4 AEs: for 6 months after last dose (up to 1.5 years). Major infections (Grade 3-4): for 2 years after the last dose (up to 3 years) irrespective of causality unless disease progressed and participant received leukemic treatment. Before disease progression, SAEs were reported during follow-up (up to 3.75 years). After disease progression, only related SAEs and second primary malignancies were reported.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Obinutuzumab + Chlorambucil17/216 (7.9%)90/214 (42.1%)205/214 (95.8%)
Obinutuzumab + Venetoclax20/216 (9.3%)104/212 (49.1%)193/212 (91%)
Safety Run-in Obinutuzumab + Venetoclax2/13 (15.4%)10/13 (76.9%)12/13 (92.3%)
Most frequent serious events
Showing 10 of 197
Most frequent serious events
EventObinutuzumab + ChlorambucilObinutuzumab + VenetoclaxSafety Run-in Obinutuzumab + Venetoclax
Febrile neutropeniaBlood and lymphatic system disorders8/21411/2123/13
PyrexiaGeneral disorders7/2148/2122/13
ThrombocytopeniaBlood and lymphatic system disorders5/2142/2121/13
BradycardiaCardiac disorders0/2140/2121/13
Myocardial infarctionCardiac disorders3/2141/2121/13
DiarrhoeaGastrointestinal disorders0/2142/2121/13
AstheniaGeneral disorders0/2140/2121/13
ChillsGeneral disorders0/2140/2121/13
General physical health deteriorationGeneral disorders0/2141/2121/13
Cholecystitis infectiveInfections and infestations0/2140/2121/13
Most frequent other events
Showing 10 of 112
Most frequent other events
EventObinutuzumab + ChlorambucilObinutuzumab + VenetoclaxSafety Run-in Obinutuzumab + Venetoclax
Infusion related reactionInjury, poisoning and procedural complications103/21489/2129/13
NeutropeniaBlood and lymphatic system disorders122/214121/2128/13
CoughRespiratory, thoracic and mediastinal disorders24/21433/2126/13
PruritusSkin and subcutaneous tissue disorders9/21418/2126/13
ConstipationGastrointestinal disorders19/21428/2125/13
DiarrhoeaGastrointestinal disorders32/21459/2125/13
HyperkalaemiaMetabolism and nutrition disorders5/2144/2125/13
NauseaGastrointestinal disorders46/21440/2124/13
DizzinessNervous system disorders17/21416/2124/13
ThrombocytopeniaBlood and lymphatic system disorders49/21449/2122/13

Baseline characteristics

Age, Continuous
Age, Continuous(Years)Obinutuzumab + ChlorambucilObinutuzumab + VenetoclaxSafety Run-in Obinutuzumab + VenetoclaxTotal
Mean71.1 ± 8.071.1 ± 8.275.4 ± 7.871.1 ± 8.1
Sex: Female, Male
Sex: Female, Male(Participants)Obinutuzumab + ChlorambucilObinutuzumab + VenetoclaxSafety Run-in Obinutuzumab + VenetoclaxTotal
Female73705148
Male1431468297
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Obinutuzumab + ChlorambucilObinutuzumab + VenetoclaxSafety Run-in Obinutuzumab + VenetoclaxTotal
Hispanic or Latino2022143
Not Hispanic or Latino17216512349
Not Stated1922041
Unknown57012
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)Obinutuzumab + ChlorambucilObinutuzumab + VenetoclaxSafety Run-in Obinutuzumab + VenetoclaxTotal
American Indian or Alaska Native1001
Black or African American3104
Native Hawaiian or other Pacific Islande0303
Unknown1820038
White19419213399
08

Study locations

122 sites
  • Banner MD Anderson Cancer Center
    Gilbert, Arizona 85234, United States
  • City of Hope
    Duarte, California 91010, United States
  • UC San Diego Health System
    La Jolla, California 92093, United States
  • Moffitt Cancer Center
    Tampa, Florida 33612-9497, United States
  • Winship Cancer Institute
    Atlanta, Georgia 30322, United States
  • Ingalls Memorial Hospital
    Harvey, Illinois 60426, United States
  • Henry Ford Hospital
    Detroit, Michigan 48202-2689, United States
  • Joe Arrington Cancer Center
    Lubbock, Texas 79410, United States
  • Hospital Italiano
    Buenos Aires, C1181ACH, Argentina
  • Liverpool Hospital
    Liverpool BC, New South Wales 1871, Australia
  • Tweed Hospital
    Tweed Heads, New South Wales 2485, Australia
  • The Townsville Hospital
    Douglas, Queensland 4814, Australia
  • Princess Alexandra Hospital Woolloongabba
    Woolloongabba, Queensland 4102, Australia
  • Royal Adelaide Hospital
    Adelaide, South Australia 5000, Australia
  • Ashford Cancer Centre Research
    Ashford, South Australia 5035, Australia
  • Box Hill Hospital
    Box Hill, Victoria 3128, Australia
  • The Northern Hospital
    Epping, Victoria 3076, Australia
  • Monash Medical Centre
    Melbourne, Victoria 3168, Australia
  • Tiroler Landeskrankenanstalten Ges.M.B.H.
    Innsbruck, 6020, Austria
  • Medizinische Universität Wien
    Vienna, 1090, Austria
  • Hanusch-Krankenhaus
    Vienna, 1140, Austria
  • Hospital das Clinicas - UFRGS
    Porto Alegre, Rio Grande do Sul 90035-903, Brazil
  • Instituto de Ensino e Pesquisa Sao Lucas - IEP
    São Paulo, São Paulo 01236-030, Brazil
  • Hospital Sírio-Libanês
    São Paulo, São Paulo 01308-050, Brazil
  • Hospital das Clinicas - FMUSP
    São Paulo, São Paulo 05403-000, Brazil
  • UMHAT Dr Georgi Stranski
    Pleven, 5800, Bulgaria
  • UMHAT " Sveti Georgi" Plovdiv - Clinic of Oncology and Hematology
    Plovdiv, 4002, Bulgaria
  • University Hospital Sv.Georgi Clnic of Hematology
    Plovdiv, 4002, Bulgaria
  • University Multiprofile Hospital For Active Treatment "Sveti Ivan Rilski" EAD
    Sofia, 1431, Bulgaria
  • MHAT Hristo Botev
    Vratsa, 3000, Bulgaria
  • Arthur J.E. Child Comprehensive Cancer Center
    Calgary, Alberta T2N 4N2, Canada
  • Queen Elizabeth II Health Sciences Centre
    Halifax, Nova Scotia B3H 2Y9, Canada
  • Jewish General Hospital
    Montreal, Quebec H3T 1E2, Canada
  • University Hospital Center Zagreb
    Zagreb, 10000, Croatia
  • University Hospital Merkur Clinic for Internal Medicine/ Hematology
    Zagreb, 10000, Croatia
  • Herlev Hospital
    Herlev, 2730, Denmark
  • Rigshospitalet
    København Ø, 2100, Denmark
  • Sjaellands Universitetshospital, Roskilde
    Roskilde, 4000, Denmark
  • Sygehus Lillebælt, Vejle
    Vejle, 7100, Denmark
  • North Estonia medical Centre
    Tallinn, 13419, Estonia
  • Tartu Uni Hospital
    Tartu, 51014, Estonia
  • Institut d'Hématologie de Basse Normandie
    Caen, 14000, France
  • Hopital Henri Mondor
    Créteil, 94000, France
  • CHU de Grenoble
    Grenoble, 38043, France
  • Centre Jean Bernard
    Le Mans, 72000, France
  • Centre Leon Berard
    Lyon, 69373, France
  • Hôpital Saint Eloi
    Montpellier, 34295, France
  • Hopital Hotel Dieu Et Hme
    Nantes, 44093, France
  • Hopital Saint Louis
    Paris, 75475, France
  • Hopital Pontchaillou
    Rennes, 35033, France
  • Centre Henri Becquerel
    Rouen, 76038, France
  • CH de Toulon Hôpital Sainte Musse
    Toulon, 83056, France
  • Institut Gustave Roussy - Hematologie
    Villejuif, 94805, France
  • Uniklinik RWTH Aachen
    Aachen, 52074, Germany
  • Charite - Campus Virchow-Klinikum
    Berlin, 13353, Germany
  • Charite - Universitätsmedizin Berlin
    Berlin, 13353, Germany
  • Universitätsklinikum Köln
    Cologne, 50937, Germany
  • BAG Freiberg-Richter, Jacobasch, Illmer, Wolf
    Dresden, 01307, Germany
  • Uniklinikum "Carl Gustav Carus";Med. Klinik 1
    Dresden, 01307, Germany
  • Universitätsklinikum Essen
    Essen, 45122, Germany
  • Klinik Esslingen
    Esslingen am Neckar, 73730, Germany
  • Klinikum Frankfurt/Oder
    Frankfurt (Oder), 15236, Germany
  • Uniklinikum Freiburg
    Freiburg im Breisgau, 79106, Germany
  • Universitaetsklinikum Heidelberg
    Heidelberg, 69120, Germany
  • Stiftung Kathol. Krankenhaus Marienhospital Herne Klinik Mitte
    Herne, 44625, Germany
  • Praxisklinik für Hämatologie und Onkologie Koblenz
    Koblenz, 56068, Germany
  • Kliniken Maria Hilf GmbH Innere Medizin I
    Mönchengladbach, 41063, Germany
  • Klinikum Schwäbisch Gmünd
    Mutlangen, 73557, Germany
  • München Klinik Schwabing
    München, 80804, Germany
  • Klinikum rechts der Isar der Technischen Universität München
    München, 81675, Germany
  • Klinikum der Universität München, Campus Großhadern
    München, 83177, Germany
  • Brüderkrankenhaus St. Josef Paderborn
    Paderborn, 33098, Germany
  • Krankenhaus Barmherzige Bruder Regensburg
    Regensburg, 93049, Germany
  • Marienhospital
    Stuttgart, 70199, Germany
  • Robert-Bosch-Krankenhaus
    Stuttgart, 70376, Germany
  • Universitatsklinikum Tubingen
    Tübingen, 72076, Germany
  • Universtitätsklinikum Ulm
    Ulm, 89081, Germany
  • Arcispedale S. Anna
    Ferrara, Emilia-Romagna 44100, Italy
  • Uni Cattolica
    Rome, Lazio 00168, Italy
  • AOU Città della Salute e della Scienza di Torino - Presidio Le Molinette
    Torino, Lazio 10126, Italy
  • Ospedale San Raffaele
    Milan, Lombardy 20132, Italy
  • Az. Osp. S. Maria
    Terni, Umbria 05100, Italy
  • Ospedale dell' Angelo
    Venezia Mestre, Veneto 30174, Italy
  • Hospital General de Culiacan
    Culiacán, Sinaloa 80230, Mexico
  • Canterbury Health Laboratories
    Christchurch, 8011, New Zealand
  • Dunedin Hospital
    Dunedin, New Zealand
  • Midcentral District Health Board
    Palmerston North, 4442, New Zealand
  • Wellington Hospital
    Wellington, 6012, New Zealand
  • Samodzielny Public Zaklad
    Chorzów, 41-500, Poland
  • Wojewódzki Szpital Specjalistyczny im. Miko?aja Kopernika
    Lodz, 9351, Poland
  • Wojewodzki Szpital Specjalistyczny im. J. Korczaka
    Słupsk, 76-200, Poland
  • Samodzielny Publiczny Szpital Kliniczny Nr 1 we Wroc?awiu
    Wroclaw, 5036, Poland
  • Fundeni Clinical Inst.
    Bucharest, 022328, Romania
  • Institutul Regional de Oncologie Iasi
    Iași, 700483, Romania
  • Spitalul Clinic Judetean de Urgenta Targu-Mures
    Târgu Mureş, 540136, Romania
  • SBEI of HPE ?Bashkir State Medical University? of MoH RF
    Ufa, Bashkortostan Republic 450000, Russia
  • Regional Clinical Hospital N.A. Semashko
    Nizhny Novgorod, Niznij Novgorod 603126, Russia
  • Republican Clinical Oncologic Dispensary of Republic Of Tatarstan
    Kazan', Tatarstan Republic 420029, Russia
  • Penza Regional Oncology Dispensary
    Penza, 440071, Russia
  • Clinical MSCh No1
    Perm, 614077, Russia

Showing the first 100 of 122 sites across 21 countries.

09

References and documents

Publications

  • Munir T, Martinez-Calle N, Xu S, Yang K, Ge X, Ali AK, Mohseninejad L, Dobi B, Rakonczai P, Ma H, Williams R, Aldairy W, Lamanna N. Indirect Comparisons of the Efficacy and Safety of Zanubrutinib versus Venetoclax plus Obinutuzumab in Treatment-Naive Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma. Oncol Ther. 2025 Dec;13(4):1055-1070. doi: 10.1007/s40487-025-00380-0. Epub 2025 Sep 13. PubMed 40944848 ↗
  • Al-Sawaf O, Robrecht S, Zhang C, Olivieri S, Chang YM, Fink AM, Tausch E, Schneider C, Ritgen M, Kreuzer KA, Sivchev L, Niemann CU, Schwarer A, Loscertales J, Weinkove R, Strumberg D, Kilfoyle A, Manzoor BS, Jawaid D, Emechebe N, Devine J, Boyer M, Runkel ED, Eichhorst B, Stilgenbauer S, Jiang Y, Hallek M, Fischer K. Venetoclax-obinutuzumab for previously untreated chronic lymphocytic leukemia: 6-year results of the randomized phase 3 CLL14 study. Blood. 2024 Oct 31;144(18):1924-1935. doi: 10.1182/blood.2024024631. PubMed 39082668 ↗
  • Langerbeins P, Giza A, Robrecht S, Cramer P, von Tresckow J, Al-Sawaf O, Fink AM, Furstenau M, Kutsch N, Simon F, Goede V, Hoechstetter M, Niemann CU, da Cunha-Bang C, Kater A, Dubois J, Gregor M, Staber PB, Tausch E, Schneider C, Stilgenbauer S, Eichhorst B, Fischer K, Hallek M. Reassessing the chronic lymphocytic leukemia International Prognostic Index in the era of targeted therapies. Blood. 2024 Jun 20;143(25):2588-2598. doi: 10.1182/blood.2023022564. PubMed 38620092 ↗
  • Al-Sawaf O, Zhang C, Jin HY, Robrecht S, Choi Y, Balasubramanian S, Kotak A, Chang YM, Fink AM, Tausch E, Schneider C, Ritgen M, Kreuzer KA, Chyla B, Paulson JN, Pallasch CP, Frenzel LP, Peifer M, Eichhorst B, Stilgenbauer S, Jiang Y, Hallek M, Fischer K. Transcriptomic profiles and 5-year results from the randomized CLL14 study of venetoclax plus obinutuzumab versus chlorambucil plus obinutuzumab in chronic lymphocytic leukemia. Nat Commun. 2023 Apr 18;14(1):2147. doi: 10.1038/s41467-023-37648-w. PubMed 37072421 ↗
  • Badawi M, Chen X, Marroum P, Suleiman AA, Mensing S, Koenigsdorfer A, Schiele JT, Palenski T, Samineni D, Hoffman D, Menon R, Salem AH. Bioavailability Evaluation of Venetoclax Lower-Strength Tablets and Oral Powder Formulations to Establish Interchangeability with the 100 mg Tablet. Clin Drug Investig. 2022 Aug;42(8):657-668. doi: 10.1007/s40261-022-01172-4. Epub 2022 Jul 13. PubMed 35829925 ↗
  • Samineni D, Gibiansky L, Wang B, Vadhavkar S, Rajwanshi R, Tandon M, Sinha A, Al-Sawaf O, Fischer K, Hallek M, Salem AH, Li C, Miles D. Pharmacokinetics and Exposure-Response Analysis of Venetoclax + Obinutuzumab in Chronic Lymphocytic Leukemia: Phase 1b Study and Phase 3 CLL14 Trial. Adv Ther. 2022 Aug;39(8):3635-3653. doi: 10.1007/s12325-022-02170-w. Epub 2022 Jun 16. PubMed 35708885 ↗
  • Al-Sawaf O, Zhang C, Lu T, Liao MZ, Panchal A, Robrecht S, Ching T, Tandon M, Fink AM, Tausch E, Schneider C, Ritgen M, Bottcher S, Kreuzer KA, Chyla B, Miles D, Wendtner CM, Eichhorst B, Stilgenbauer S, Jiang Y, Hallek M, Fischer K. Minimal Residual Disease Dynamics after Venetoclax-Obinutuzumab Treatment: Extended Off-Treatment Follow-up From the Randomized CLL14 Study. J Clin Oncol. 2021 Dec 20;39(36):4049-4060. doi: 10.1200/JCO.21.01181. Epub 2021 Oct 28. PubMed 34709929 ↗
  • Al-Sawaf O, Zhang C, Tandon M, Sinha A, Fink AM, Robrecht S, Samoylova O, Liberati AM, Pinilla-Ibarz J, Opat S, Sivcheva L, Le Du K, Fogliatto LM, Niemann CU, Weinkove R, Robinson S, Kipps TJ, Tausch E, Schary W, Ritgen M, Wendtner CM, Kreuzer KA, Eichhorst B, Stilgenbauer S, Hallek M, Fischer K. Venetoclax plus obinutuzumab versus chlorambucil plus obinutuzumab for previously untreated chronic lymphocytic leukaemia (CLL14): follow-up results from a multicentre, open-label, randomised, phase 3 trial. Lancet Oncol. 2020 Sep;21(9):1188-1200. doi: 10.1016/S1470-2045(20)30443-5. PubMed 32888452 ↗
  • Fischer K, Al-Sawaf O, Bahlo J, Fink AM, Tandon M, Dixon M, Robrecht S, Warburton S, Humphrey K, Samoylova O, Liberati AM, Pinilla-Ibarz J, Opat S, Sivcheva L, Le Du K, Fogliatto LM, Niemann CU, Weinkove R, Robinson S, Kipps TJ, Boettcher S, Tausch E, Humerickhouse R, Eichhorst B, Wendtner CM, Langerak AW, Kreuzer KA, Ritgen M, Goede V, Stilgenbauer S, Mobasher M, Hallek M. Venetoclax and Obinutuzumab in Patients with CLL and Coexisting Conditions. N Engl J Med. 2019 Jun 6;380(23):2225-2236. doi: 10.1056/NEJMoa1815281. Epub 2019 Jun 4. PubMed 31166681 ↗

Study documents

  • Study protocol · Feb 12, 2018
  • Statistical analysis plan · Nov 8, 2018

Documents are hosted by the registry — open the source record to download them.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 6, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02242942
Lead sponsor
Hoffmann-La Roche
Collaborators
AbbVie, German CLL Study Group
Responsible party
Sponsor
First posted
Sep 17, 2014
Start date
Dec 31, 2014
Primary completion
Aug 17, 2018
Completion
Aug 27, 2025
Results posted
Oct 1, 2019
Last update
Nov 6, 2025

Study contacts

Clinical Trials
study director · Hoffmann-La Roche

Oversight

FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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