Ann Arbor Stage IV Diffuse Large B-Cell Lymphoma

This feasibility trial studies how well daratumumab in combination with dose-adjusted etoposide, prednisone, vincristine sulfate, cyclophosphamide, and doxorubicin hydrochloride (DA-EPOCH) works in treating patients with newly diagnosed stage I-IV plasmablastic lymphoma. Plasmablastic lymphoma cells have high levels of a protein called CD38. Daratumumab is a monoclonal antibody that specifically targets CD38 expressing cells, and may help the body's immune system attack the cancer and interfere with the ability of cancer cells to grow and spread. Drugs used in chemotherapy, such as etoposide, prednisone, vincristine sulfate, cyclophosphamide, and doxorubicin hydrochloride, 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 daratumumab may enhance the effectiveness of a standard chemotherapy (DA-EPOCH) in patients with plasmablastic lymphoma.