Diffuse Large B-Cell Lymphoma Clinical Trial
Official title:
A PHASE 1b/2 STUDY OF PF-07901801, A CD47 BLOCKING AGENT, WITH TAFASITAMAB AND LENALIDOMIDE FOR PARTICIPANTS WITH RELAPSED/REFRACTORY DIFFUSE LARGE B CELL LYMPHOMA NOT ELIGIBLE FOR STEM CELL TRANSPLANTATION
The purpose of this study is to learn about the effects of three study medicines [maplirpacept (PF-07901801), tafasitamab, and lenalidomide] when given together for the treatment of diffuse large B-cell lymphoma (DLBCL) that: - is relapsed (has returned after last treatment) or - is refractory (has not responded to last treatment) DLBCL is a type of non-Hodgkin lymphoma (NHL). NHL is a cancer of the lymphatic system. It develops when the body makes abnormal lymphocytes. These lymphocytes are a type of white blood cell that normally help to fight infections. This study is seeking participants who are unable or unwilling to undergo an autologous stem cell transplantation (when doctors put healthy blood cells back into your body) or CAR-T immune cell therapy. Everyone in this study will receive three medicines: maplirpacept (PF-07901801), tafasitamab and lenalidomide. Participants will receive maplirpacept (PF-07901801) and tafasitamab at the study clinic by intravenous (IV) infusion (given directly into a vein) and lenalidomide will be taken by mouth at home. Study interventions will be administered in 28-day cycles. Maplirpacept (PF-07901801) will be given weekly for the first three cycles and then every two weeks. Tafasitamab will administered on Days 1, 4, 8, 15 and 22 in cycle 1, weekly in cycles 2 and 3 and then every 2 weeks in cycle 4 and beyond. Lenalidomide will be taken every day for Days 1 to 21 of each 28-day cycle for the first 12 cycles. Participants can continue to take maplirpacept (PF-07901801) and tafasitamab until their lymphoma is no longer responding. Lenalidomide is discontinued after 12 cycles. Maplirpacept (PF-07901801) will be given at different doses to different participants. Everyone taking part will receive approved doses of tafasitamab and lenalidomide. We will compare the experiences of people receiving different doses of PF-07901801. This will help us to determine what dose is safe and effective when combined with the other 2 study medicines.
This is a multicenter, open-label, Phase 1b/2 study to evaluate the safety, tolerability and potential clinical benefits of maplirpacept (PF-07901801), an anti-CD47 molecule, in combination with standard doses of tafasitamab and lenalidomide in participants with relapsed/refractory (R/R) DLBCL not eligible for or unwilling to undergo high dose chemotherapy and subsequent autologous stem cell transplantation (ASCT) or unable to receive approved chimeric antigen receptor T-cell (CAR-T) therapy (for example, due to logistical limitations). For Phase 1b, participants must have previously received at least 1 prior systemic treatment regimen. For Phase 2, participants must have received at least 1 but no more than 2 prior systemic treatment regimens. All participants must have previously received an anti-CD20 containing regimen. Phase 1b will assess dose-limiting toxicities of maplirpacept (PF-07901801) when administered in combination with tafasitamab and lenalidomide, to select up to 2 doses for the Phase 2 part of the study. Phase 2 will evaluate safety and efficacy to determine the recommended Phase 3 dose of Maplirpacept (PF-07901801) to be administered in combination with tafasitamab and lenalidomide. ;
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