Hypofractionation Radiotherapy in Combination with Glofitamab in Relapsed/refractory Diffuse B-cell Lymphoma with Baseline High Tumor Burden

"Obinutuzumab An initial 1000 mg dose of obinutuzumab will be administered as pretreatment 7 days prior to the first glofitamab step-up dose~Glofitamab:~Glofitamab was administered intravenously as step-up doses on day 8 (2.5 mg) and day 15 (10 mg) of cycle 1, followed by a dose of 30 mg on day 1 of cycles 2 through 8, maximum of 12 cycles (Q3W). The efficacy is evaluated after 2 cycles of glofitamab. Those with disease progression will be withdrawn from the study. The remaining patients continue with an additional two cycles of glofitamab (4 cycles in total) and then perform efficacy assessment. If the patients achieve a CR or PR, they will continue to complete the remaining treatment as planned. Patients are recommended to treat for 12 cycles (at least 8 cycles, depending on tumor regression in patients) or until disease progression or unacceptable toxicity, whichever occurs first"