Bortezomib and Lenalidomide in Treating Patients With Relapsed or Refractory Mantle Cell Lymphoma

This phase II trial studies how well bortezomib and lenalidomide work in treating patients with mantle cell lymphoma that has come back after a period of improvement (refractory) or is not responding to treatment (refractory). Bortezomib may also stop the growth of cancer cells by blocking some proteins needed for cell growth. Lenalidomide may stimulate the immune system to kill cancer cells and may also block the growth of new blood vessels necessary for cell growth. Giving bortezomib with lenalidomide may be an effective treatment for relapsed or refractory mantle cell lymphoma.