Alisertib With and Without Rituximab in Treating Patients With Relapsed or Refractory B-Cell Non-Hodgkin Lymphoma

This phase II trial studies how well alisertib with and without rituximab works in treating patients with relapsed or refractory B-cell non-Hodgkin lymphoma. Alisertib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Monoclonal antibodies, such as rituximab, can block cancer growth in different ways. Some block the ability of cancer cells to grow and spread. Others find cancer cells and help kill them or carry cancer-killing substances to them. Giving alisertib with and without rituximab may be an effective treatment for B-cell non-Hodgkin lymphoma