Low Dose Radiation as Bridging Therapy in Relapsed B-Cell Non-Hodgkin Lymphoma

Study Summary

The goal of this clinical trial is to learn about treatment for people with B-cell lymphoma that did not respond to treatment or that has gotten worse after treatment. The aim of this trial is to answer the following questions: * If it is realistic to give people radiation treatment before they receive a chimeric antigen receptor (CAR) T-cell treatment for their cancer * If it is safe to give people radiation treatment before they receive a CAR T-cell treatment for their cancer