From 10/99 to 05/03, 476 patients were enrolled. 235 patients were assigned to receive ACE and 241 to ACVBP. Among the 331 patients, in Complete response (CR+CRu) after induction, who received HDC, 269 were randomized (R2) after hematological recovery to receive either rituximab (n=139) or nothing (n=130).