Ofatumumab and Bendamustine Hydrochloride With or Without Bortezomib in Treating Patients With Untreated Follicular Non-Hodgkin Lymphoma

This randomized phase II trial studies how well ofatumumab and bendamustine hydrochloride with or without bortezomib works in treating patients with untreated follicular non-Hodgkin lymphoma. Monoclonal antibodies, such as ofatumumab, may block cancer growth in different ways by targeting certain cells. Drugs used in chemotherapy, such as bendamustine 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. Bortezomib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Bortezomib may also stop the growth of cancer cells by blocking blood flow to the tumor. It is not yet known whether ofatumumab and bendamustine hydrochloride are more effective with bortezomib in treating patients with follicular non-Hodgkin lymphoma.