A Study to Customize Ibrutinib Treatment Regimens for Participants With Previously Untreated Chronic Lymphocytic Leukemia (TAILOR)
Leukemia, Lymphocytic, Chronic, B-Cell, Small Lymphocytic Lymphoma
About this trial
This is an interventional treatment trial for Leukemia, Lymphocytic, Chronic, B-Cell
Eligibility Criteria
Inclusion Criteria: Diagnosis of chronic lymphocytic leukemia/ small lymphocytic lymphoma (CLL/SLL) as per International Workshop on Chronic Lymphocytic Leukemia (iwCLL) 2018 diagnostic criteria For ibruinib + venetocIax (I+V) cohorts: eastern cooperative oncology group (ECOG) performance status of 0-1. For ibrutinib monotherapy cohorts: ECOG performance status of 0-2 Measurable nodal disease by computed tomography (CT), defined as at least 1 lymph node greater than and equal to (>=) 1.5 centimeters (cm) in longest diameter A participant using oral contraceptives must use an additional contraceptive method A participant must agree not to be pregnant, breastfeeding, or planning to become pregnant while enrolled in this study or within 3 months after the last dose of study treatment Exclusion Criteria: Uncontrolled autoimmune hemolytic anemia or idiopathic thrombocytopenia purpura, such as those participants with a declining hemoglobin level or platelet count secondary to autoimmune destruction within the 4 weeks prior to first dose of study treatment, or the need for prednisone greater than (>) 20 milligrams (mg) daily (or corticosteroid equivalent) to treat or control the autoimmune disease Known bleeding disorders (example, von Willebrand's disease or hemophilia) Stroke or intracranial hemorrhage within 6 months prior to enrollment Known or suspected Richter's transformation or central nervous system (CNS) involvement Currently active, clinically significant cardiovascular disease, such as uncontrolled arrhythmia or Class II, III, or IV congestive heart failure as defined by the New York Heart Association Functional Classification
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Experimental
Experimental
Experimental
Experimental
Cohort 1a: Ibrutinib Lead-in+Fixed Duration Ibrutinib+Venetoclax
Cohort 1b: Ibrutinib Lead-in+Fixed Duration Ibrutinib+Venetoclax
Cohort 2a: Continuous Ibrutinib Monotherapy
Cohort 2b: Continuous Ibrutinib Monotherapy
Participants will receive ibrutinib 420 milligrams (mg) capsule every day (QD) for a lead-in of 3 cycles (1 cycle = 28 days). From Cycle 4, venetoclax 400 mg tablet dose ramp-up (from 20 to 400 mg over 5 weeks) will begin, and venetoclax 400 mg QD will be administered with ibrutinib 420 mg QD, orally for 12 cycles through Cycle 15.
Participants will receive ibrutinib 420 mg capsule QD for a lead-in of 3 cycles (1 cycle = 28 days). From Cycle 4, venetoclax 400 mg tablet dose ramp-up (from 20 to 400 mg over 5 weeks) will begin and ibrutinib dose will be reduced to 280 mg and will be administered QD, venetoclax 400 mg tablets QD will be administered with ibrutinib 280 mg for 12 cycles through Cycle 15.
Participants will receive ibrutinib 420 mg QD (or last tolerated dose) until disease progression (PD) or unacceptable toxicity.
Participants will receive ibrutinib 420 mg QD for 3 cycles. Ibrutinib 280 mg QD (or last tolerated dose) will begin at cycle 4 and continue until disease progression or unacceptable toxicity.