The addition of Rituximab to standard CHOP (R-CHOP) has been shown in LNH98-5 study to improve complete remission rate (CR), event-free survival (EFS) and overall survival (OS) in elderly patients with B-DLCL. Considering only patients with an aa-IPI score of 1, the 2 year EFS was 75% in the R-CHOP group as compared with 42% in the CHOP group.