RecruitingPhase 2Drug trialCombining Loncastuximab Tesirine and Epcoritamab in Relapsed/Refractory Diffuse Large B-cell Lymphoma (DLBCL)This is a phase II study designed to evaluate the toxicity and efficacy of the combination of loncastuximab tesirine and epcoritamab in patients with relapsed/refractory aggressive B-cell lymphoma. Chimeric antigen receptor (CAR)-T cell naive patients who have failed first-line therapy and patients who have received CAR-T cells as second-line therapy and experienced CAR-T failure will be eligible for inclusion.