RITUXAN (rituximab) is a CD20-directed cytolytic antibody indicated for the treatment of...Adult patients with Non-Hodgkin’s Lymphoma (NHL)...Relapsed or refractory, low grade or follicular, CD20-positive B-cell NHL as a single agent....Previously untreated diffuse large B-cell, CD20-positive NHL in combination with (cyclophosphamide, doxorubicin, vincristine, and prednisone) (CHOP) or other anthracycline-based chemotherapy regimens.