Evaluate the Safety and Efficacy of Tafasitamab Combined With Lenalidomide in Patients With Relapsed or Refractory DLBCL

"Tafasitamab will be administered intravenously in 28-day cycles. During Cycles 1 through 3, tafasitamab will be administered weekly on Days 1, 8, 15, and 22; an additional loading dose will be administered on Cycle 1 Day 4. Starting with Cycle 4, tafasitamab will be administered on Days 1 and 15 of each cycle.~Participants will self-administer lenalidomide capsules orally on Days 1-21 of each 28-day cycle, up to 12 cycles."