RecruitingPhase 2Drug trialPhase 2 Trial of Epcoritamab in Combination With Rituximab-mini CVP for Older Unfit/Frail Patients or Anthracycline-Ineligible Adult Patients With Newly Diagnosed Diffuse Large B-cell LymphomaTo learn if adding epcoritamab to the treatment combination R-miniCVP (rituximab, cyclophosphamide, vincristine, prednisone) can help to control newly diagnosed DLBCL. The safety of this combination will also be studied.