Stepping up treatment with Rituxan (R) (rituximab, Mabthera (R)) for CLL patients with advanced stage of disease relapsing after or refractory to conventional chemotherapy. Posted byadmin 27. July 2020 Greil, R, Steurer, M, Egle, A, Stauder, R, Anether, G, Ulmer, L, Tinhofer, I, Gastl, G