DLBCL is a curable disease and combination of monoclonal antibody against CD20 (rituximab) with cyclophosphamide, doxorubicin, vincristine and prednisolone (CHOP) regimen have improved the prognosis of patients with a 20% increase of the cure rate. For the remaining patients who are not in complete response and/or who relapse after first line therapy, the possibility of cure is dramatically reduced.