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A Study of the Combination of Ibrutinib Plus Venetoclax Versus Chlorambucil Plus Obinutuzumab for the First-line Treatment of Participants With Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT03462719
Recruitment Status : Active, not recruiting
First Posted : March 12, 2018
Results First Posted : March 28, 2022
Last Update Posted : August 15, 2022
Sponsor:
Collaborator:
Pharmacyclics LLC.
Information provided by (Responsible Party):
Janssen Research & Development, LLC

Brief Summary:
The purpose of this study is to assess progression-free survival (PFS) from treatment with ibrutinib plus venetoclax (I+VEN) compared with obinutuzumab plus chlorambucil (G-Clb) as assessed by an Independent Review Committee (IRC).

Condition or disease Intervention/treatment Phase
Leukemia, Lymphocytic, Chronic, B-Cell Drug: Ibrutinib Drug: Venetoclax Drug: Chlorambucil Drug: Obinutuzumab Drug: Ibrutinib (as Subsequent Therapy) Phase 3

Detailed Description:
The hypothesis is treatment with combination of I+VEN will result in longer PFS compared with G-Clb in participants with previously untreated chronic lymphocytic leukemia (CLL)/ small lymphocytic lymphoma (SLL) who meet International Workshop on CLL (iwCLL) treatment criteria. The study includes screening (30 days), treatment (from randomization until treatment discontinuation) and follow-up phase (from treatment discontinuation until Subsequent Therapy Phase [if applicable], death, lost to follow up, consent withdrawal, or study end, whichever occurs first). Participants without progression will continue disease evaluations until disease progression or death. Participants from either treatment arm that develop progressive disease may be eligible to receive single-agent ibrutinib until disease progression or unacceptable toxicity (Subsequent Therapy Phase). Participation in this phase of the study is not mandatory and is based on investigator's discretion. Study duration is approximately 6 years. Safety includes review of adverse events and laboratory tests performed over time.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 211 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Randomized, Open-label, Phase 3 Study of the Combination of Ibrutinib Plus Venetoclax Versus Chlorambucil Plus Obinutuzumab for the First-line Treatment of Subjects With Chronic Lymphocytic Leukemia (CLL)/Small Lymphocytic Lymphoma (SLL).
Actual Study Start Date : April 17, 2018
Actual Primary Completion Date : February 26, 2021
Estimated Study Completion Date : April 5, 2024


Arm Intervention/treatment
Experimental: Treatment Arm A: Ibrutinib and Venetoclax (I+VEN)
Participants will initially receive ibrutinib (420 mg [milligrams]/day) for 3 cycles. Venetoclax dose ramp up (from 20 to 400 mg over 5 weeks) will begin at Cycle 4 and the combination of ibrutinib and venetoclax will be given for 12 cycles (each cycle is equivalent to 28 days). Participants who subsequently develop progressive disease may enter to Subsequent Therapy Phase to receive single-agent ibrutinib until disease progression or unacceptable toxicity.
Drug: Ibrutinib
Participants will receive ibrutinib 420 mg orally once daily up to 15 cycles.

Drug: Venetoclax
Participants will receive venetoclax in combination with ibrutinib for a total of 12 cycles, beginning at Cycle 4. For the first 5 weeks of venetoclax treatment, the treatment dose will be ramped up from 20 to 400 mg.

Drug: Ibrutinib (as Subsequent Therapy)
Participants will receive ibrutinib 420 mg orally once daily until disease progression or unacceptable toxicity during the subsequent therapy phase.

Active Comparator: Treatment Arm B: Chlorambucil and Obinutuzumab (G-Clb)
Participants will receive chlorambucil and obinutuzumab (G-Clb) for 6 cycles. Participants will receive obinutuzumab, 1000 mg intravenously (IV) on Days 1, 8 and 15 of Cycle 1, and on Day 1 of Cycles 2 to 6 and chlorambucil 0.5 milligrams per kilogram (mg/kg) body weight, on Days 1 and 15 of Cycles 1 to 6. Participants who subsequently develop progressive disease may enter to Subsequent Therapy Phase to receive single-agent ibrutinib until disease progression or unacceptable toxicity.
Drug: Chlorambucil
Participants will receive chlorambucil at a dose of 0.5 mg/kg body weight on Days 1 and 15 of Cycles 1 to 6.

Drug: Obinutuzumab
Participant will receive obinutuzumab 1000 mg intravenously on Days 1, 8, and 15 of Cycle 1, and Day 1 of Cycles 2 to 6.

Drug: Ibrutinib (as Subsequent Therapy)
Participants will receive ibrutinib 420 mg orally once daily until disease progression or unacceptable toxicity during the subsequent therapy phase.




Primary Outcome Measures :
  1. Progression Free Survival (PFS) [ Time Frame: Up to 2 years 10 months ]
    PFS: time between date of randomization and date of disease progression, as assessed by IRC, or date of death due to any cause, whichever occurs first, regardless of use of subsequent anti-cancer therapy prior to PD or death using iWCLL2008 criteria : New enlarged lymph nodes >15 mm, new hepatomegaly or splenomegaly, or other organ infiltrates, bone lesion, ascites or pleural effusion due to CLL; >=50% increase in longest diameter (LDi) from nadir in existing lymph node (LDi >15 mm) or >=50% increase from nadir in sum of diameters of multiple nodes (and at least 1 node with LDi >15 mm); >=50% increase from nadir in enlargement of liver/spleen; >=50% increase from baseline in lymphocyte count (ALC; to >=5*10^9/L); or >=50% increase from nadir in ALC in >=2 serial assessments if ALC is >=30000*10^9/L and lymphocyte doubling time is rapid unless considered treatment-related lymphocytosis; new cytopenia attributable to CLL; transformation to more aggressive histology.


Secondary Outcome Measures :
  1. Minimal Residual Disease (MRD) Negative Rate [ Time Frame: Up to 2 years 10 months ]
    MRD-negative rate is defined as the percentage of participants who achieved MRD-negative status (that is, less than [<] 1 chronic lymphocytic leukemia (CLL) cell per 10,000 leukocytes or <0.01 percentage [%]) in the bone marrow as assessed by next-generation sequencing (NGS). Participants with missing MRD data were considered MRD positive.

  2. Complete Response Rate (CRR) [ Time Frame: Up to 2 years 10 months ]
    Complete response rate is defined as the percentage of participants who achieved complete response or complete response with an incomplete marrow recovery (CRi) on or prior to initiation of subsequent anti-leukemic therapy per the IRC assessment. International Workshop on Chronic Lymphocytic Leukemia (iWCLL) 2008 criteria: CR- No lymphadenopathy and hepatosplenomegaly, no constitutional symptoms, neutrophils >1.5*10^9/liter (L), platelets >100*10^9/L, Hgb >11 gram per deciliter (g/dL), absolute lymphocyte count <4000/microliter (mcL) and normocellular bone marrow with <30% lymphocytes and no B lymphoid nodules; CRi- CR with incomplete recovery of bone marrow.

  3. Overall Response Rate (ORR) [ Time Frame: Up to 2 years 10 months ]
    ORR: percentage of participants who achieved best overall response of either CR, CRi, nodular PR (nPR) and partial response (PR). iWCLL 2008 criteria: CR- No lymphadenopathy and hepatosplenomegaly, no constitutional symptoms, neutrophils >1.5*10^9/liter (L), platelets >100*10^9/L, Hgb >11 g/dL and ALC <4000/mcL, normocellular bone marrow with <30% lymphocytes and no B lymphoid nodules; CRi- CR with incomplete recovery of bone marrow; nPR- participants meet criteria for CR, but bone marrow biopsy shows B-lymphoid nodules (reflecting residual disease); PR-2 of following when abnormal at baseline: >=50% decrease in ALC, >=50% decrease in sum of products of multiple nodes, >=50% decrease in enlargement of spleen or liver; and 1 of following: neutrophils >1.5*10^9/L, Platelets >100*10^9/L and Hgb>11 g/dL or >=50% improvement over baseline in any of these; 50% reduction in bone marrow infiltrates or B lymphoid nodules; no new enlarged nodes or new hepatosplenomegaly.

  4. Overall Survival (OS) [ Time Frame: Up to 3 years 4 months ]
    OS is defined as the time from date of randomization to date of death from any cause.

  5. Duration of Response (DOR) [ Time Frame: Up to 2 years 10 months ]
    DOR is defined as the interval between the date of initial documentation of a response including partial response with lymphocytosis (PRL) and the date of first documented evidence of PD or death or date of censoring per the IRC assessment. iWCLL 2008 criteria for PD: New enlarged nodes >1.5 cm, new hepatomegaly or splenomegaly, or other organ infiltrates; >= 50% increase from nadir in existing lymph node or >=50% increase from nadir in sum of product of diameters of multiple nodes; >=50% increase from nadir in enlargement of liver or spleen; >=50% increase from baseline in lymphocyte count (and to >=5*10^9/L) unless considered treatment-related lymphocytosis; new cytopenia (Hemoglobin b or platelets) attributable to CLL; transformation to a more aggressive histology.

  6. Time-to-Next Treatment [ Time Frame: Up to 2 years 10 months ]
    Time-to-next treatment was measured from the date of randomization to the start date of any subsequent anti-leukemic therapy.

  7. Time to Worsening as Measured by Using EuroQol 5 Dimension 5 Level Questionnaire (EQ-5D-5L) [ Time Frame: Up to 2 years 10 months ]

    Time to worsening= time interval (months) from randomization to first observation of deterioration. EQ-5D-5L consists of a 5-item descriptive system and the EuroQol visual analog scale (EQ-5D VAS). EQ-5D-VAS self-rating records respondent's own assessment of his/her overall health status at time of completion, on scale of 0 (worst health you can imagine) to 100 (best health you can imagine). Worsening is defined as a decrease of >= 7 points (on a 0-100 scale).

    EQ-5D-5L descriptive system comprises 5 dimensions of health (mobility, self -care, usual activities, pain/discomfort, and anxiety/depression) to describe participant's current health state. Responses for 5 dimensions are combined into a 5-digit number describing respondents health state that can be converted into a single index value or utility score (using the United Kingdom weights), ranging from -1 to 1, where lower scores indicate a worse health status. Worsening is defined as a decrease of >=0.08 points (on a 0-1 scale).


  8. Time to Worsening Measured by European Organization for Research and Treatment of Cancer-Quality of Life Questionnaire (EORTC QLQ)-C30) [ Time Frame: Up to 2 years 10 months ]
    Time to worsening= time interval from randomization to first observation of deterioration. EORTC QLQ-C30 includes 30 separate items: 5 functional scales (physical, role, emotional, cognitive, and social Functioning), 1 global health status (GHS) and QoL scale, 3 symptom scales (fatigue, nausea/vomiting, and pain), and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea, and financial difficulties). Each item, except GHS, is answered on 4-point scale (1=not at all to 4=very much) and GHS is measured on 1-7 scale: 1=very poor and 7=excellent. Scores derived using validated scoring algorithms as per EORTC QLQ-C30 Manual and linearly transformed in a range from 0-100. For functional and global QoL scales, higher scores=better level of functioning/QoL. For symptom-oriented scales, higher score=more severe symptoms. Worsening in functional and global health scores=decrease of >=10 points (on 0-100 scale) and in symptom scores=increase of >=10 points (on 0-100 scale).

  9. Time to Worsening and Time to Improvement as Measured by Functional Assessment of Chronic Illness Therapy (FACIT)-Fatigue Total Score [ Time Frame: Up to 2 years 10 months ]
    Responses to the 13-item FACIT Fatigue Scale are reported on a 5-point categorical response scale ranging from 0 (not at all) to 4 (very much). The sum of all responses resulted in the FACIT-Fatigue score for a total possible score of 0 (worst score) to 52 (best score). Time to Worsening is defined as time interval (months) from randomization to first observation of deterioration. Worsening is defined as a decrease >= 3 points (on a 0-52 scale). Time to improvement is defined as the time interval (months) from randomization to the first observation of improvement. Improvement is defined as an increase >=3 points (on a 0-52 scale).

  10. Number of Participants With Adverse Events (AEs) as a Measure of Safety and Tolerability [ Time Frame: Up to 3 years 4 months ]
    An adverse event (AE) is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study.

  11. Number of Participants With Abnormal Clinical Laboratory Findings [ Time Frame: Up to 2 years 10 months ]
    Number of participants with abnormal clinical laboratory findings (hematology and serum chemistry) were reported.

  12. Percentage of Participants With Sustained Hemoglobin Improvement [ Time Frame: Up to 2 years 10 months ]
    Sustained hemoglobin improvement is defined as the percentage of participants who achieved an increase in hemoglobin levels from baseline by >= 2 grams per deciliter (g/dL) and lasts for at least 56 days without blood transfusion or growth factors.

  13. Percentage of Participants With Sustained Platelet Improvement [ Time Frame: Up to 2 years 10 months ]
    Sustained platelet improvement is defined as the percentage of participants who achieved an increase in platelet levels from baseline by >= 50% and lasts for at least 56 days without blood transfusion or growth factors.

  14. Plasma Concentration of Ibrutinib and Venetoclax [ Time Frame: Ibrutinib: Pre-dose-Day 1 of Cycles 2, 3, 5 and 6 (each cycle is defined as 28 days), Venetoclax: Pre-dose-Day 1 of Cycles 5 and 6 ]
    Plasma concentrations of ibrutinib and venetoclax were determined by validated liquid chromatography-tandem mass spectrometry.



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Adult participants who are: (a) greater than or equal to (>=) 65 years old or, (b) 18 to 64 years old and have at least 1 of the following:

    1. Cumulative Illness Rating Scale (CIRS) score > 6
    2. Creatinine clearance (CrCl) estimated less than (<) 70 milliliter per minute (mL/min) using Cockcroft-Gault equation
  • Diagnosis of chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) that meets International Workshop on Chronic Lymphocytic Leukemia (iwCLL) criteria
  • Measurable nodal disease (by computed tomography [CT]), defined as at least one lymph node > 1.5 centimeter (cm) in longest diameter
  • Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) Grade less than or equal to (<=) 2
  • Active CLL/SLL requiring treatment per the iwCLL criteria

Exclusion Criteria:

  • Prior anti-leukemic therapy for CLL or SLL
  • Presence of deletion of the short arm of chromosome 17 (del17p) or known TP53 mutation detected at a threshold of >10 percent (%) variable allele frequency (VAF)
  • Major surgery within 4 weeks of first dose of study treatment
  • Known bleeding disorders (example, von Willebrand's disease or hemophilia)
  • Central nervous system (CNS) involvement or suspected Richter's syndrome

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03462719


Locations
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Sponsors and Collaborators
Janssen Research & Development, LLC
Pharmacyclics LLC.
Investigators
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Study Director: Janssen Research & Development, LLC Clinical Trial Janssen Research & Development, LLC
  Study Documents (Full-Text)

Documents provided by Janssen Research & Development, LLC:
Study Protocol  [PDF] December 19, 2019
Statistical Analysis Plan  [PDF] April 16, 2021

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
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Responsible Party: Janssen Research & Development, LLC
ClinicalTrials.gov Identifier: NCT03462719    
Other Study ID Numbers: CR108428
2017-004699-77 ( EudraCT Number )
54179060CLL3011 ( Other Identifier: Janssen Research & Development, LLC )
First Posted: March 12, 2018    Key Record Dates
Results First Posted: March 28, 2022
Last Update Posted: August 15, 2022
Last Verified: August 2022

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Product Manufactured in and Exported from the U.S.: Yes
Additional relevant MeSH terms:
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Leukemia
Leukemia, Lymphoid
Leukemia, Lymphocytic, Chronic, B-Cell
Neoplasms by Histologic Type
Neoplasms
Lymphoproliferative Disorders
Lymphatic Diseases
Immunoproliferative Disorders
Immune System Diseases
Leukemia, B-Cell
Venetoclax
Obinutuzumab
Chlorambucil
Antineoplastic Agents
Antineoplastic Agents, Immunological
Antineoplastic Agents, Alkylating
Alkylating Agents
Molecular Mechanisms of Pharmacological Action