Nivolumab and Combination Chemotherapy in Treating Participants With Diffuse Large B-Cell Lymphoma

This phase I/II trial studies the side effects and best dose of nivolumab and how well it works when giving together with combination chemotherapy in treating participants with diffuse large B-cell lymphoma. Monoclonal antibodies, such as nivolumab, interfere with the ability of cancer cells to grow and spread. Drugs used in chemotherapy, 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. Giving nivolumab and combination chemotherapy may work better in treating participants with diffuse large B-cell lymphoma.