Recent studies suggest that lenalidomide and rituxan are effective in relapsed or refractory lymphomas. Revlimid, in particular, shows effectiveness for maintenance in myeloma. Because both drugs are well tolerated, this created an interest in studying their effectiveness for maintenance. The idea behind maintenance therapy is to supress any remaining or dormant cells and to prolong time to the return of the diseae, or possibly to produce a cure. Currently, maintenance is not standard for most lymphomas, including Diffuse Large B Cell lymphoma. Lenalidomide alone is still in studies, for example, Maintenance Lenalidomide in Lymphoma, NCT01575860.
For Professional version see here