Treatment Trials

792 Clinical Trials for Various Conditions

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RECRUITING
A Study of Patients With Relapsed/Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma Treated With Lisocabtagene Maraleucel in the Post-Marketing Setting
Description

The purpose of this study is to characterize the long-term safety of lisocabtagene maraleucel (liso-cel), focusing on patients treated in the chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) indication, and will be part of post-marketing liso-cel pharmacovigilance activities

RECRUITING
A Study Evaluating the Efficacy and Safety of Pirtobrutinib in Participants With Relapsed or Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma
Description

The main purpose of this study is to assess the efficacy and safety of 3 dose levels of Pirtobrutinib in participants with relapsed or refractory chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL), who have received 1-3 lines of treatment including a covalent Bruton tyrosine kinase (BTK) inhibitor. The study is expected to last approximately 3 years.

WITHDRAWN
A Study to Compare the Efficacy and Safety of Lisocabtagene Maraleucel vs Investigator's Choice Options in Adult Participants With Relapsed or Refractory Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma, Whose Disease Has Failed Treatment With Both BTKi and BCL2i Therapies
Description

The purpose of this study is to compare the efficacy and safety of liso-cel vs Investigator's Choice options (idelalisib + rituximab or bendamustine + rituximab) in adult participants with R/R CLL or SLL, whose disease has failed treatment with both BTKi and BCL2i targeted therapies.

TERMINATED
RP-3500 and Olaparib in DNA Damage Repair Pathway Deficient Relapsed/Refractory Chronic Lymphocytic Leukemia
Description

This is an open-label, multicenter, phase Ib/II study of the combination of RP-3500 and olaparib in Relapsed/Refractory Chronic Lymphocytic Leukemia (R/R CLL) patients with DDR deficiencies.

TERMINATED
A Study to Evaluate the Safety and Tolerability of BMS-986403 in Participants With Relapsed and/or Refractory Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma
Description

The purpose of this study is to evaluate the safety and preliminary efficacy of BMS-986403 in participants with relapsed and/or refractory chronic lymphocytic leukemia (R/R CLL) or small lymphocytic lymphoma (SLL).

RECRUITING
A Study Evaluating the Safety, Efficacy, and Pharmacokinetics of Mosunetuzumab and a Combined Regimen of Mosunetuzumab and Venetoclax in Participants With Relapsed or Refractory Chronic Lymphocytic Leukemia
Description

This study will assess the safety, tolerability, pharmaokinetics, and preliminary efficacy of mosunetuzumab (Lunsumio) monotherapy in participants with relapsed or refractory (R/R) chronic lymphocytic leukemia (CLL). This study will also allow participants who are currently progressing on a Bruton tyrosine kinase inhibitor (BTKi) and requiring salvage therapy as assessed by the treating physician to continue their BTKi throughout the screening period and for the first two cycles of mosunetuzumab. An additional arm (open to non-US participants only) has been added to assess the safety, tolerability, pharmacokinetics, and preliminary efficacy of mosunetuzumab in combination with venetoclax, a B-cell lymphoma 2 (BCL2) inhibitor.

TERMINATED
A Study to Evaluate VIP152 in Subjects With Relapsed/Refractory Chronic Lymphocytic Leukemia or Richter Syndrome
Description

Determine the safety, tolerability, pharmacokinetics, maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D) of VIP152 as monotherapy or in combination with a BTKi in patients with Chronic Lymphocytic Leukemia (CLL) or Richter Syndrome

RECRUITING
CAP-100 for Subjects With Relapsed/Refractory Chronic Lymphocytic Leukemia
Description

Introduction of immuno-chemotherapy in the treatment options of CLL and SLL changed the treatment paradigm of these diseases. Presently, first-line therapies for CLL/SLL include targeted therapies (e.g. ibrutinib, acalabrutinib) or combined immuno-chemotherapy regimens (e.g., fludarabine, cyclophosphamide, and rituximab for patients aged \<65 years without del17p/TP53 mutations or bendamustine and rituximab for patients ≥65 years who have additional comorbidities). Despite the gradual introduction of targeted therapies, new treatment strategies efficacious for patients ineligible for/unresponsive to these therapies are still required. These new strategies should ideally overcome disease relapse and circumvent compound-specific safety challenges. Emerging treatment options include new compounds aimed for both untreated and relapsed/refractory CLL, and combination therapies of existing compounds that extend single-agent efficacy in specific high-risk patient populations. CAP-100 is expected to prevent the migration of leukemia cells to and their survival in lymphoid niches as well as to eliminate CCR7-positive leukemia cells via ADCC, resulting in measurable clinical responses. The present trial is the first-in-human trial of CAP-100 and is divided into two phases. The aim of the Phase Ia (dose escalation) is to define the Recommended Phase 2 Dose (RP2D) versus the Maximum Tolerated Dose (MTD) of CAP-100 in subjects with CLL. Phase Ib of the trial (expansion phase) will evaluate the safety and preliminary clinical benefit of CAP-100 monotherapy at RP2D (response rate, lymph node size reduction, assessment of minimal residual disease \[MRD\]) to support the design of future trials investigating CAP-100 either as monotherapy or in a combination setting with approved treatments for CLL.

RECRUITING
Safety and Efficacy Study of Epcoritamab in Subjects With Relapsed/Refractory Chronic Lymphocytic Leukemia and Richter's Syndrome
Description

The study is a global, multi-center safety and efficacy trial of epcoritamab, an antibody also known as EPKINLY™ and GEN3013 (DuoBody®-CD3xCD20). Epcoritamab will be tested either in Relapsed/refractory (R/R) chronic lymphocytic leukemia (CLL) as: * Monotherapy, or * Combination therapy: * epcoritamab + venetoclax * epcoritamab + pirtobrutinib Treatment-naïve (TN) high risk (HR) (CLL): • epcoritamab + pirtobrutinib Combination therapy for Richter's Syndrome (RS): * epcoritamab + lenalidomide * epcoritamab + R-CHOP (i.e., rituximab, cyclophosphamide, doxorubicin hydrochloride, vincristine \[Oncovin®\] and prednisone). The study includes participants with R/R or TN HR CLL/small lymphocytic lymphoma (SLL) and participants with RS. The trial consists of two parts, a dose-escalation phase (phase Ib) and an expansion phase (phase II). Participants with RS are only included in the expansion phase. Epcoritamab will be injected subcutaneously (under the skin). Standard-of-care and combination treatments (venetoclax, pirtobrutinib, lenalidomide, and R-CHOP) will be given either orally (by mouth) or intravenously (in a vein). Study details include: * Study duration will be up to 5 years after the last participant's first treatment in the trial. * The treatment duration for each participant will be between 12 months (1 year) and 24 months (2 years), depending upon the treatment arm assigned. * The visit frequency will be either weekly, every other week, or monthly, depending upon the part of the study. All participants will receive active drug; no one will be given placebo.

COMPLETED
A Safety and Preliminary Efficacy Study of CC-99282 in Combination With Obinutuzumab in Subjects With Relapsed or Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma
Description

CC-99282-CLL-001 study is a Phase IB dose escalation and expansion clinical study of CC-99282 administered in combination with Obinutuzumab in subjects with relapsed or refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma.

ACTIVE_NOT_RECRUITING
Daratumumab and Ibrutinib for the Treatment of Relapsed or Refractory Chronic Lymphocytic Leukemia, DIRECT Study
Description

This phase II trial studies how well daratumumab and ibrutinib work in treating patients with chronic lymphocytic leukemia that has come back (relapsed) or has not responded to previous treatment (refractory). Daratumumab is a monoclonal antibody which works with the body's immune system to destroy cancer cells. Ibrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Giving daratumumab and ibrutinib may work better in treating patients with chronic lymphocytic leukemia compared to ibrutinib alone.

RECRUITING
Acalabrutinib and Venetoclax with or Without Early Obinutuzumab for the Treatment of High Risk, Recurrent, or Refractory Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma
Description

This phase II trial studies how well acalabrutinib and venetoclax with or without early obinutuzumab work for the treatment of chronic lymphocytic leukemia or small lymphocytic lymphoma that is high risk, has come back (recurrent), or does not respond to treatment (refractory). Acalabrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Venetoclax may stop the growth cancer cells by blocking BCL-2 protein needed for cell growth. Immunotherapy with monoclonal antibodies, such as obinutuzumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving acalabrutinib and venetoclax together with early obinutuzumab may improve clinical outcomes and control the disease.

ACTIVE_NOT_RECRUITING
Acalabrutinib Safety Study in Untreated and Relapsed or Refractory Chronic Lymphocytic Leukemia Patients
Description

This is a global, Phase IIIb, multicenter, open-label, single-arm study to evaluate the safety and efficacy of acalabrutinib 100 mg twice daily (bid) in approximately 540 participants with chronic lymphocytic leukemia (CLL). Participants will be enrolled into 3 following cohorts: treatment-naive (TN), relapsed/refractory (R/R), and prior ibrutinib therapy. For this study, participants in the UK will be enrolled ONLY into the R/R cohort or the prior ibrutinib cohort. Participants in the US will be enrolled ONLY into the TN or R/R cohort. Participants will remain on study intervention until completion of 48 cycles (28 days per cycle), or until study intervention discontinuation due to, for example disease progression, or toxicity, withdrawal of consent, loss to follow-up, death, or study termination by the sponsor whichever occurs first. The duration of the study will be approximately 72 months from the first participant enrolled. This duration includes an estimated 24-month recruitment time and an assumed 48 cycles of study intervention (28 days per cycle); additional study time will be accrued during the Disease Follow up period for those participants remaining on study intervention after completion of 48 cycles prior to the final data cutoff (DCO) (the amount of time will vary by participant).

RECRUITING
Early Clonal Dynamics During Venetoclax Treatment for Relapsed or Refractory Chronic Lymphocytic Leukemia (CLL)
Description

Background: The drug venetoclax treats chronic lymphocytic leukemia (CLL). Researchers want to find better treatments for CLL. To do that, they need to learn how the drug affects CLL cancer cells and the immune system. Objective: To learn about genetic changes that happen during treatment of CLL with venetoclax. Eligibility: Adults ages 18 and older with relapsed or refractory CLL after at least 1 prior therapy Design: Participants will be screened under a separate protocol. In Phase 1, participants will get venetoclax free of charge through the NIH. Venetoclax is started at a low dose. The dose will be increased every week until participants reach their maximum tolerable dose. This usually take about 5 weeks. Participants will visit the NIH at least once per week. Visits will be about 4 hours. They may have to stay in the hospital to be observed. In Phase 2, participants will continue to get the drug through their local cancer doctor and their health insurance. Patients will also visit the NIH every 6 months, or if their disease progresses. At the NIH participants will have regular health assessments. These will include physical exams and a review of the medicines they are taking. They will talk about how they are feeling. The study included the following tests: Blood draws CT scans: Participants will lie in a machine that takes pictures of the body (maximum 3 per year) Bone marrow biopsies: A small amount of marrow will be taken out of the participant s hip bone with a needle. Optional lymph node biopsies: A small piece of the participant s tissue will be taken out with a needle. The study will last at least 2 years.

COMPLETED
A Study of Zanubrutinib (BGB-3111) Versus Ibrutinib in Participants With Relapsed/Refractory Chronic Lymphocytic Leukemia
Description

This study is designed to compare the overall response rate of zanubrutinib versus ibrutinib in participants with relapsed/refractory chronic lymphocytic leukemia or small lymphocytic lymphoma.

TERMINATED
Study to Evaluate the Safety and Tolerability of Brexucabtagene Autoleucel (KTE-X19) in People With Relapsed/Refractory Chronic Lymphocytic Leukemia and Small Lymphocytic Lymphoma
Description

The primary objective of this study is to evaluate the safety and tolerability of brexucabtagene autoleucel (KTE-X19) in adults with relapsed/refractory chronic lymphocytic leukemia (r/r CLL) and small lymphocytic lymphoma (r/r SLL) who have received at least 2 prior lines of treatment, one of which must include a Bruton's tyrosine kinase (BTK) inhibitor. After the end of KTE-C19-108, participants who received an infusion of brexucabtagene autoleucel will complete the remainder of the 15-year follow-up assessments in a separate Long-term Follow-up study, KT-US-982-5968 (NCT05041309).

RECRUITING
Study Evaluating Safety and Efficacy of JCAR017 in Subjects With Relapsed or Refractory Chronic Lymphocytic Leukemia (CLL) or Small Lymphocytic Lymphoma (SLL)
Description

This is a Phase 1/2, open-label, multicenter study to determine the efficacy and safety of JCAR017 in adult subjects with relapsed or refractory CLL or SLL. The study will include a Phase 1 part to determine the recommended dose of JCAR017 monotherapy in subjects with relapsed or refractory CLL or SLL, followed by a Phase 2 part to further assess the efficacy and safety of JCAR017 monotherapy treatment at the recommended dose. A separate Phase 1 cohort will assess the combination of JCAR017 and concurrent ibrutinib. Another separate Phase 1 cohort will assess the combination of JCAR017 and concurrent venetoclax. In all subjects, the safety, efficacy, and pharmacokinetics (PK) of JCAR017 will be evaluated.

ACTIVE_NOT_RECRUITING
Ibrutinib, Fludarabine, and Pembrolizumab in High-Risk or Relapsed/Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma
Description

Background: Chronic lymphocytic leukemia and small lymphocytic lymphoma (hereby referred as CLL) are tumors of B cells. A subset of patients categorized as high-risk CLL has a poor clinical outcome when treated with conventional chemotherapy. This single-arm, phase II study investigates the combination of ibrutinib, fludarabine and pembrolizumab for treatment of CLL. Ibrutinib is an orally administered therapy for CLL. Fludarabine is a well-tolerated drug that has been widely used to treat CLL. Also, fludarabine can modulate CLL cells as well as immune cells that support the growth of CLL cells. Pembrolizumab recruits immune cells to attack CLL cells. With this approach we hope to achieve a greater reduction in CLL cells than with single agent ibrutinib and to restore healthier immune system that could contribute to durable responses. Objective: To investigate the rate of complete response to ibrutinib, short course fludarabine and pembrolizumab. Eligibility: Patients with active CLL meeting treatment indications defined by 2008 International Workshop on CLL (IWCLL) consensus guideline. High-risk CLL defined by one of the following: * Relapsed/refractory disease status, or * Presence of high-risk mutations regardless of prior treatment status: deletion 17p, TP53 mutation, NOTCH1 mutation, SF3B1 mutation, MYC aberration, or complex cytogenetics. Design: This is a single-arm, open-label phase II study. Timeline: Treatment on this study is given in cycles from cycle -3 to 17, then in months beyond cycle 17. Cycles -3 to -1 are 28-day cycles. Cycles 1 to 17 are 21-day cycles. After completion of 1 year of pembrolizumab, the time on study is by chronological months on study from starting pembrolizumab. Treatment plan: * Ibrutinib is given starting from cycle -3 and continuously until disease progression or intolerable side effects occur. * Fludarabine is given on D1-D5 on cycle -2 only * Pembrolizumab is given every 3 weeks starting from cycle 1 for 1 year. * Minimal residual disease will be measured at 2 years from cycle 1 to determine the need for long- term treatment with ibrutinib. * Previously-untreated patients who achieve minimal residual disease negativity will stop ibrutinib. * Patients who do not achieve minimal residual disease negativity or who has Relapsed/refractory CLL will continue ibrutinib.

WITHDRAWN
Multicenter Study of Pacritinib Combined With Ibrutinib in Relapsed/Refractory Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma (CLL/SLL)
Description

This study combines two drugs in the treatment of relapsed/refractory chronic lymphocytic leukemia (CLL) and small lymphocytic lymphoma (SLL). Investigators are proposing combining ibrutinib, an orally-administered, small molecule inhibitor of Bruton's tyrosine kinase (FDA approved for the treatment of relapsed/refractory CLL), with pacritinib, a novel JAK2-FLT3 inhibitor that has shown activity in relapsed lymphoma, including CLL/SLL. Investigators will first demonstrate the safety and tolerability of Pacritinib when combined with Ibrutinib in a phase I study, which will help establish the MTD (Maximum Tolerated Dose)of Pacritinib when combined with Ibrutinib. Once the optimal dose of Pacritinib is established in the phase I setting, a phase II evaluation will seek to establish the efficacy of the combination of Pacritinib with Ibrutinib. Patients will receive continuous treatment until progressive disease and will be followed while on study treatment for a total of 2 years.

WITHDRAWN
A Study of Duvelisib and Venetoclax in Subjects With Relapsed or Refractory Chronic Lymphocytic Leukemia, Small Lymphocytic Lymphoma, or Indolent or Aggressive Non-Hodgkin Lymphoma, Who Have Not Previously Received a Bcl-2 or PI3K Inhibitor
Description

This study is designed to assess the safety, pharmacokinetics, drug-drug interactions, and determine the recommended Phase 2 doses of co administered Duvelisib and Venetoclax in participants with relapsed or refractory chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma, or indolent or aggressive non-Hodgkin lymphoma, who have not previously received a Bcl-2 or Phosphoinositide 3-kinase (PI3K) inhibitor. The Phase 2 portion of the study will preliminarily evaluate efficacy, and expand the toxicity evaluation.

TERMINATED
Buparlisib and Ofatumumab or Ibrutinib in Treating Patients With Relapsed or Refractory Chronic Lymphocytic Leukemia
Description

This phase I trial studies the side effects and best dose of buparlisib when given together with ofatumumab or ibrutinib in treating patients with chronic lymphocytic leukemia that has returned after a period of improvement or does not respond to treatment. Buparlisib and ibrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Monoclonal antibodies, such as ofatumumab, may block cancer growth in different ways by targeting certain cells. Giving buparlisib or ibrutinib and ofatumumab together may work better in treating patients with chronic lymphocytic leukemia.

ACTIVE_NOT_RECRUITING
A Study of Ibrutinib + Obinutuzumab in Patients With Relapsed or Refractory Chronic Lymphocytic Leukemia
Description

This research study is evaluating a combination of two drugs, ibrutinib and obinutuzumab, as a possible treatment for Chronic Lymphocytic Leukemia (CLL).

COMPLETED
Pembrolizumab Alone or With Idelalisib or Ibrutinib in Treating Patients With Relapsed or Refractory Chronic Lymphocytic Leukemia or Other Low-Grade B-Cell Non-Hodgkin Lymphomas
Description

This phase II trial studies how well pembrolizumab alone or with idelalisib or ibrutinib works in treating patients with chronic lymphocytic leukemia or other low-grade B-cell non-Hodgkin lymphomas that have returned after a period of improvement (relapsed) or have not responded to treatment (refractory). Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Idelalisib and ibrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Giving pembrolizumab alone or with idelalisib or ibrutinib may be an effective treatment in patients with chronic lymphocytic leukemia or other low-grade B-cell non-Hodgkin lymphomas.

UNKNOWN
Selinexor and Ibrutinib in Treating Patients With Relapsed or Refractory Chronic Lymphocytic Leukemia or Aggressive Non-Hodgkin Lymphoma
Description

This phase I trial studies the side effects and best dose of selinexor when given together with ibrutinib in treating patients with chronic lymphocytic leukemia or aggressive non-Hodgkin lymphoma that has returned after a period of improvement or does not respond to treatment. Drugs used in chemotherapy, such as selinexor, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Ibrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Giving selinexor together with ibrutinib may be a better treatment for chronic lymphocytic leukemia or aggressive non-Hodgkin lymphoma.

TERMINATED
Lenalidomide and Obinutuzumab in Treating Patients With Recurrent or Refractory Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma
Description

This phase II trial studies how well lenalidomide and obinutuzumab work in treating patients with chronic lymphocytic leukemia or small lymphocytic lymphoma that has come back (recurrent) or does not respond to treatment (refractory). Drugs used in chemotherapy, such as lenalidomide, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Monoclonal antibodies, such as obinutuzumab, may interfere with the ability of cancer cells to grow and spread. Giving lenalidomide and obinutuzumab may work better in treating patients with chronic lymphocytic leukemia or small lymphocytic lymphoma.

COMPLETED
UC-961 (Cirmtuzumab) in Relapsed or Refractory Chronic Lymphocytic Leukemia
Description

The purpose of the study is to investigate the safety of the investigational agent, cirmtuzumab. Cirmtuzumab is a monoclonal antibody drug designed to attach to a protein, called ROR1, on the surface of chronic lymphocytic leukemia (CLL) cells to block cell growth and survival. ROR1 is rarely expressed on healthy cells so the idea is to preferentially get rid of the cancer cells. Although there is evidence in laboratory animals that cirmtuzumab can decrease the number of CLL cells, the investigators do not know if this will work in humans. This drug will be given to humans for the first time in this study. Therefore, the goal of this study is to see if cirmtuzumab is safe and tolerated in study participants.

TERMINATED
Phase I Study of Lenalidomide, Rituximab and Ibrutinib in Relapsed/Refractory Chronic Lymphocytic Leukemia (CLL)
Description

This study is for subjects diagnosed with recurrent or relapsed CLL/SLL. The purpose of this study is to test the safety of the combination of the drugs lenalidomide and ibrutinib at different dose levels, in combination with the drug rituximab. We want to find out what effects, good and/or bad, they have on patients with CLL/SLL. The hypothesis of the study is that it will be safe to give the three drugs in combination and the information learned from this trial will be used to study the 3 drug combination is a larger future trial.

ACTIVE_NOT_RECRUITING
Lenalidomide, Ibrutinib, and Rituximab in Treating Patients With Relapsed or Refractory Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma That Is Metastatic or Cannot Be Removed by Surgery
Description

This phase I trial studies the side effects and best dose of lenalidomide when given together with ibrutinib and rituximab in treating patients with chronic lymphocytic leukemia or small lymphocytic lymphoma that has come back (relapsed), has not responded well to prior treatments (refractory), has spread to other parts of the body (metastatic), or cannot be removed by surgery. Biological therapies, such as lenalidomide, use substances made from living organisms that may stimulate or suppress the immune system in different ways and stop cancer cells from growing. Ibrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Rituximab is a monoclonal antibody that may interfere with the ability of tumor cells to grow and spread. Giving lenalidomide together with ibrutinib and rituximab may kill more cancer cells.

SUSPENDED
Clinical Study of Relapsed/Refractory Chronic Lymphocytic Leukemia (CLL)
Description

This is an open-label, Phase I/Ib trial with a dose escalation phase, followed by a dose extension phase. The objective of the dose escalation phase is to evaluate the pharmacokinetics (PK) and MTD of P1446A-05 in relapsed/refractory CLL and the objective of the dose extension phase is to evaluate the safety, efficacy and pharmacodynamics of P1446A-05 in 14 patients at the MTD level.

COMPLETED
A Study to Evaluate the Benefit of Venetoclax Plus Rituximab Compared With Bendamustine Plus Rituximab in Participants With Relapsed or Refractory Chronic Lymphocytic Leukemia (CLL)
Description

The purpose of this open-label, multicenter, randomized, Phase III study is to evaluate the benefit of venetoclax in combination with rituximab compared with bendamustine in combination with rituximab in participants with relapsed or refractory CLL. Participants will be randomly assigned in 1:1 ratio to receive either venetoclax + rituximab (Arm A) or bendamustine + rituximab (Arm B).