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Clinical Trial Summary

This phase III trial tests whether continuous or intermittent zanubrutinib after achieving a complete remission (CR) with rituximab works in older adult patients with mantle cell lymphoma (MCL) who have not received treatment in the past (previously untreated). Rituximab is a monoclonal antibody that may interfere with the ability of cancer cells to grow and spread. Zanubrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. When zanubrutinib is used in MCL, the current standard of care is to continue administering the drug indefinitely until disease progression. This continuous treatment comes with clinical as well as financial toxicity, which could be especially detrimental in older patients. For patients who achieve a CR after initial zanubrutinib plus rituximab therapy, it may be safe and equally effective to stop treatment and restart zanubrutinib upon disease progression rather than continuing indefinitely in previously untreated older adult patients with MCL.


Clinical Trial Description

PRIMARY OBJECTIVE: I. To compare time to first progression or death (progression free survival [PFS]1) with continuous treatment (Arm A) and time to second progression or death (PFS2) with intermittent treatment that is restarted at first progression (Arm B). KEY SECONDARY OBJECTIVE: I. To compare overall survival between patients who achieve a complete remission (CR) with induction therapy subsequently treated with continuous treatment versus (vs.) intermittent treatment as part of maintenance therapy. SECONDARY OBJECTIVES: I. To determine overall response rate (ORR) and CR rate to induction therapy with zanubrutinib and rituximab in previously untreated MCL. II. To determine adverse events during induction and post-induction in each study arm (Arm A and B) by Common Terminology Criteria for Adverse Events (CTCAE) 5.0. III. To determine PFS1, event free survival (EFS) and overall survival (OS) in each study arm (A and B). IV. To determine the overall response rate (ORR) and complete response rate (CR) after restarting zanubrutinib, following the first progression, in the intermittent treatment arm (Arm B). V. To compare burden of symptomatic adverse events (AEs) as assessed by Patient-Reported Outcome Common Terminology Criteria for Adverse Events (PRO-CTCAE) between patients randomized to Arm A versus Arm B. QUALITY OF LIFE PRIMARY OBJECTIVE: I. To compare health-related quality of life (QOL) at 12 cycles post-randomization as assessed by the Functional Assessment of Cancer Therapy (FACT) Lymphoma Symptom Index-18 (FLYMSI-18) total score between patients randomized to Arm A versus Arm B. QUALITY OF LIFE SECONDARY OBJECTIVES: I. To compare health-related QOL at other time points as assessed by the FLYMSI-18 total score between patients randomized to Arm A versus Arm B. II. To compare burden of symptomatic AEs as assessed by PRO-CTCAE between patients randomized to continuous (Arm A) versus intermittent (Arm B) zanubrutinib treatment. QUALITY OF LIFE EXPLORATORY OBJECTIVES: I. To compare the geriatric functional and cognitive PRO as assessed by Elderly Functional Index (EFLI) and Neurology (Neuro) QOL in Arm A versus Arm B. II. To compare cognitive function at various time points as assessed by the Neuro-QOL between patients randomized to continuous (Arm A) versus intermittent (Arm B) zanubrutinib treatment. EXPLORATORY OBJECTIVES: I. To evaluate the completion rate of a lymphoma-specific patient assessment of life survey (PALS) with patient directed questions on life, health, and social determinants of health (SDH) and assess the impact of the survey collected data on outcomes for all enrolled patients (study arms A and B). II. To evaluate minimal residual disease (MRD) in those patients who achieve a CR after induction therapy (arms A and B) and how detectable MRD status changes after continued therapy vs. discontinuation of therapy (i.e. arms A vs. B). OUTLINE: INDUCTION THERAPY: Patients receive zanubrutinib orally (PO) and rituximab intravenously (IV) on study. Patients undergo bone marrow biopsy and fluciclovine F18 (FDG) positron emission tomography (PET)/ computed tomography (CT) or CT throughout the trial. Patients may also undergo esophagogastroduodenoscopy (EGD) and/or colonoscopy on study as clinically indicated. Patients may optionally undergo blood sample collection throughout the trial. MAINTENANCE THERAPY: Patients achieving a CR after induction therapy are randomized to 1 of 2 arms. ARM A: Patients receive zanubrutinib PO until first disease progression on study. Patients undergo CT or magnetic resonance imaging (MRI) or FDG PET/CT throughout the trial. Patients may optionally undergo blood sample collection throughout the trial. ARM B: Patients undergo observation until first disease progression and then receive zanubrutinib PO until second disease progression on study. Patients undergo CT or MRI or FDG PET/CT throughout the trial. Patients may optionally undergo blood sample collection throughout the trial. After completion of study treatment, patients are followed within 30 days and every 6 months for 10 years. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05976763
Study type Interventional
Source Alliance for Clinical Trials in Oncology
Contact Anne Beaven, MD
Phone 919-966-9268
Email anne_beaven@med.unc.edu
Status Recruiting
Phase Phase 3
Start date September 8, 2023
Completion date August 31, 2038

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