Follicular Lymphoma Recurrent

This phase I trial tests the safety, side effects and best dose of CC-99282 with rituximab for the treatment of patients who have received chimeric antigen receptor (CAR) T cell therapy for non-Hodgkins lymphoma and in whom have had a sub-optimal response early on to CAR T-cell therapy. Immunotherapy with CC-99282 may induce changes in the body's immune system and may interfere with the ability of tumor cells to grow and spread. Rituximab is a monoclonal antibody. It binds to a protein called CD20, which is found on B cells (a type of white blood cell) and some types of cancer cells. This may help the immune system kill cancer cells. Giving CC-99282 with rituximab may be a safe and effective treatment option for patients who have received CAR-T cell therapy for relapsed or refractory non-Hodgkin's lymphoma.