This study is for adults with a type of blood cancer called Diffuse Large B-Cell Lymphoma (DLBCL) that has come back or hasn't responded to treatment. The study is trying to find out if a new treatment with the drugs epcoritamab and lenalidomide (called E-Len) is safe and works better than the usual treatment with rituximab, gemcitabine, and oxaliplatin (R-GemOx). Epcoritamab is an experimental drug, which means it is still being tested.
Participants will be divided into three groups. Group A will get injections of epcoritamab and lenalidomide pills for up to 12 cycles, with each cycle lasting 28 days. Group B will receive R-GemOx through an IV for up to 4 cycles. Group C will get epcoritamab injections for up to 12 cycles.
During the study, participants will have to visit the hospital or clinic regularly for check-ups, blood tests, and to fill out questionnaires. The study will have about 360 participants from around the world.
- Study lasts up to 12 months with monthly cycles.
- Regular hospital visits are required.
- Participants may face more treatment burden than usual care.