Smart Start: A Phase II Study of Rituximab, Lenalidomide, and Ibrutinib

Diffuse Large B-Cell Lymphoma Unclassifiable

This phase II trial studies how well giving rituximab, lenalidomide, and ibrutinib with chemotherapy works in treating patients with high-risk diffuse large B-cell lymphoma. High-risk large B-cell lymphoma is a type of cancer of the immune system that is usually fast-growing in the body. Monoclonal antibodies, such as rituximab, may block cancer growth in different ways by targeting certain cells. Ibrutinib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. 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. Drugs used in chemotherapy, such as etoposide, prednisone, vincristine sulfate, cyclophosphamide, and doxorubicin hydrochloride, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving rituximab, ibrutinib, and lenalidomide with combination chemotherapy may kill more cancer cells.

PRIMARY OBJECTIVES: I. To determine the overall response rate at the end of 2 cycles of therapy with rituximab, lenalidomide, and ibrutinib in patients with high risk newly diagnosed non-germinal center B-cell-like diffuse large B-cell lymphoma (non-GCB DLBCL). II. To determine the complete response rate at the end of 6 cycles of therapy with rituximab, lenalidomide, and ibrutinib combined with chemotherapy (cyclophosphamide, doxorubicin hydrochloride \[hydroxydaunorubicin hydrochloride\], vincristine sulfate \[Oncovin\], prednisone \[CHOP\] or etoposide, prednisone, vincristine sulfate \[Oncovin\], cyclophosphamide, doxorubicin hydrochloride \[hydroxydaunorubicin hydrochloride\] \[EPOCH\]) in patients with high risk newly diagnosed non-GCB DLBCL. SECONDARY OBJECTIVES: I. To determine the overall response rate, landmark survival outcomes (progression free and overall survival), and safety of lenalidomide and ibrutinib with chemotherapy (CHOP or EPOCH) in patients with high risk newly diagnosed non-GCB DLBCL. II. To evaluate descriptively the complete response rate in rituximab, lenalidomide, ibrutinib (RLI)-CHOP and in RLI-EPOCH. EXPLORATORY OBJECTIVES: I. To evaluate the baseline and therapy induced changes in the profile of mutations, gene expression, minimal residual disease clonotype levels, immune cell subsets, and tumor protein expression in tumor biopsy and blood samples in patients with high risk newly diagnosed non-GCB DLBCL. OUTLINE: SMART START: Patients receive rituximab intravenously (IV) over 4-6 hours on day 1, lenalidomide orally (PO) once daily (QD) on days 1-10, and ibrutinib PO QD on days 1-21. Treatment repeats every 21 days for 2 cycles in the absence of disease progression or unacceptable toxicity. RLI WITH EPOCH: After SMART START therapy, patients receive rituximab IV over 4-6 hours on day 1, lenalidomide PO QD on days 1-10, and ibrutinib PO QD on days 1-21. Patients also receive etoposide IV over 24 hours on days 1-4, prednisone PO QD on days 1-5, vincristine sulfate IV over 24 hours on days 1-4, doxorubicin hydrochloride IV over 24 hours on days 1-4, and cyclophosphamide IV over 1 hour on day 5. Treatment repeats every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity. RLI WITH R-CHOP: After SMART START therapy, patients receive rituximab IV over 4-6 hours on day 1, lenalidomide PO QD on days 1-10, and ibrutinib PO QD on days 1-21. Patients also receive prednisone PO QD on days 1-5, vincristine sulfate IV over 1 hour on day 1, doxorubicin hydrochloride IV over 1 hour on day 1, and cyclophosphamide IV over 1 hour on day 1. Treatment repeats every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 3 months for 1 year, and then every 4 months for another year.

United States

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