This study will evaluate the efficacy and safety of ZR2 versus R-miniCHOP in the treatment of unfit or frail de novo diffuse large B-cell lymphoma patients aged older than or equal to 70 years. Subjects will be randomly assigned 1:1 to ZR2 or R-miniCHOP regimen. The stratification will be performed according to international prognostic index (0-2 / 3-5).~Patients in ZR2 group will receive 6 cycles of zanubrutinib 160mg bid, day 1-21, orally, lenalidomide 25mg qd, day 2-11, orally, rituximab 375mg/m², day 1, intravenously, every 21 days. Patients in R-miniCHOP group will receive rituximab 375 mg/m² on day 1, cyclophosphamide 400 mg/m², doxorubicin 25 mg/m², and vincristine 1 mg on day 2, and prednisone 40 mg/m² on days 2-6, every 21 days.
A multicenter, prospective, randomized, open-label, controlled trial to evaluate the efficacy and safety of zanubrutinib, rituximab and lenalidomide (ZR2) versus rituximab combined with low-dose CHOP (R-miniCHOP) in the treatment of unfit or frail de novo diffuse large B-cell lymphoma patients aged older than or equal to 70 years