PRIMARY OBJECTIVE:
I. To compare overall survival in mantle cell lymphoma (MCL) patients in minimal residual disease (MRD)-negative first complete remission (CR) who undergo autologous hematopoietic stem cell transplantation (auto-HCT) followed by maintenance rituximab versus (vs.) maintenance rituximab alone (without auto-HCT).
SECONDARY OBJECTIVES:
I. To compare progression-free survival in MCL patients in MRD-negative CR who undergo auto-HCT followed by maintenance rituximab vs. maintenance rituximab alone.
II. To define the overall survival and progression-free survival at 2 and 5 years of chemosensitive but MRD-positive CR patients who undergo auto-HCT followed by 3 years of maintenance rituximab.
III. To define the overall survival and progression-free survival at 2 and 5 years of chemosensitive but MRD-positive partial response (PR) patients who undergo auto-HCT followed by 3 years of maintenance rituximab.
IV. To define the overall survival and progression-free survival at 2 and 5 years of MRD-negative PR patients who undergo auto-HCT followed by 3 years of maintenance rituximab.
V. To define the overall survival and progression-free survival at 2 and 5 years of MRD-indeterminate patients who undergo auto-HCT followed by 3 years of maintenance rituximab.
VI. To describe the rate of complications (serious infection, hospitalization, need for intravenous immune globulin) in MCL patients undergoing maintenance rituximab following auto-HCT.
VII. To determine the prognostic impact of MRD status at day 100, in MCL patients who were MRD-positive (including MRD-positive CR and MRD-positive PR) prior to auto-HCT.
EXPLORATORY TOBACCO USE OBJECTIVES:
I. To determine the effects of tobacco, operationalized as combustible tobacco (1a), other forms of tobacco (1b), and environmental tobacco exposure (ETS) (1c) on provider-reported cancer-treatment toxicity (adverse events (both clinical and hematologic) and dose modifications).
II. To determine the effects of tobacco on patient-reported physical symptoms and psychological symptoms.
III. To examine quitting behaviors and behavioral counseling/support and cessation medication utilization.
IV. To explore the effect of tobacco use and exposure on treatment duration, relative dose intensity, and therapeutic benefit.
OUTLINE: Patients are randomized to 1 of 2 groups.
GROUP I: Patients receive standard of care preparative chemotherapy and undergo auto-HCT. Beginning 100-140 days after transplant, patients receive rituximab intravenously (IV) or rituximab and hyaluronidase human subcutaneously (SC) or any approved rituximab biosimilar at the approved dose once every 8 weeks for up to 18 cycles in the absence of disease progression or unacceptable toxicity.
GROUP II: Patients receive standard of care induction chemotherapy. Beginning 40-180 days after completion of chemotherapy, patients receive rituximab or rituximab and hyaluronidase human or any approved rituximab biosimilar at the approved dose, as in Group I.
Patients undergo positron emission tomography (PET), computed tomography (CT) or PET/CT throughout the study. Patients may undergo blood sample collection during screening and on study. Patients also may undergo bone marrow biopsy and aspirate during screening.
After completion of study treatment, patients are followed up every 3 and 6 months for 10 years.
