The purpose of this study is to find out what effects (good and/or bad) treatment with chemotherapy and stem cell transplant compared with chemotherapy alone will have on primary CNS B-cell lymphoma. Currently the best treatment for patients with primary CNS B-cell lymphoma is not known.
A Randomized Phase II Trial of Myeloablative Versus Non-Myeloablative Consolidation Chemotherapy for Newly Diagnosed Primary CNS B-cell Lymphoma
Primary Objective:
To compare the two-year progression-free survival (PFS) of patients treated with the myeloablative consolidation treatment strategy of HDT/ASCT versus those treated with non-myeloablative consolidation chemotherapy with cytarabine and etoposide
Secondary Objectives:
- To compare the two-year event-free survival (EFS) of patients treated with consolidation HDT/ASCT versus those treated with consolidation chemotherapy consisting of etoposide and cytarabine
- To compare the overall survival (OS) of patients treated with the consolidation HDT/ASCT versus those treated with consolidation chemotherapy consisting of etoposide and cytarabine
- To assess the toxicities associated with consolidation HDT/ASCT versus consolidation consisting of etoposide and cytarabine
- To determine diffusion MRI metrics (ADCmini, ADC25%, and ADCmean) prior to induction chemotherapy, after one full induction chemotherapy cycle, and at the end of induction chemotherapy as a predictor of response and outcome (CALGB 581101)
- To determine brain FDG-PET metrics (tumor SUV and tumor versus background SUV) prior to induction chemotherapy, after one full induction chemotherapy cycle, and at the end of induction chemotherapy as a predictor of response and outcome (CALGB 581101)
- To determine whether low baseline ADC measurements are associated with shorter PFS and OS (CALGB 581101)
- To determine whether reduction in tumor SUV by > 25% on brain FDG-PET/CT after one cycle of induction therapy is associated with improved PFS and OS (CALGB 581101)
- To determine which IHC-based biomarkers are predictive of an adverse prognosis (CALGB 151113)
- To determine which IHC-based biomarkers are predictive of a favorable prognosis (CALGB 151113) for BCL6 (B-cell CLL/lymphoma 6), and STAT 6 (signal transducer and activator of transcription 6, interleukin-4 induced)
- To analyze tumor tissue for gene expression profiles, and to correlate these profiles with treatment outcomes (CALGB 151113)
- To determine whether CSF proteome is a predictor of outcomes (prognostic marker) irrespective of treatment arm (CALGB 151113) for (IL-10 (interleukin 10) and C3 (complement component 3)
- To assess the neurocognitive function of patients treated with consolidation HDT/ASCT versus those treated with consolidation chemotherapy (etoposide and cytarabine) as measured by serial administration of the International PCNSL Collaborative Group (IPCG) neurocognitive battery and evaluate the long-term survivorship differences between the two arms (CALGB 71105)