This study is an Open-labeled, multicenter Phase II study of Bortezomib for maintenance
therapy in patients with high risk diffuse large B cell lymphoma (DLBCL). Primary objective
is 3 years relapse free survival (RFS) and Secondary objectives are 3 years overall survival
(OS), 3 years event free survival (EFS),Toxicities profiles, Quality of Life (FACT&GOG-Ntx)