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Detailed Description:
Patients with relapsed Diffuse Large B-cell Lymphoma (DLBCL) who are refractory to or relapse within 12 months of first-line rituximab-based therapy, have poor outcomes with conventional approaches to autologous stem cell transplantation as detailed above. The investigators hypothesize that the intensive mobilization strategy developed can overcome some of the obstacles to successful autologous stem cell transplantation (ASCT) by both eliminating residual disease following salvage therapy and by facilitating stem cell collection. Even though there is clinical experience in the cooperative group setting with intensive pre-ASCT mobilization, it has never been prospectively validated in DLBCL and concerns exist as to its ability to improve outcomes with ASCT in this high-risk, and heavily pretreated group of patients. Furthermore, most patients in the study site's registry treated with intensive mobilization were rituximab-naïve and the findings may not translate in the rituximab-refractory population. The investigators also believe that ofatumumab, a novel monoclonal antibody against a distinct CD20 epitope may in fact overcome rituximab resistance in DLBCL patients and through more effective CDC may eliminate minimal residual disease in the patient and contaminating tumor cells in the stem cell graft.http://clinicaltrials.gov/ct2/show/NCT01555541?term=ofatumumab&rank=66
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