Zanubrutinib and Lenalidomide as Maintenance Therapy in DLBCL

The investigators will evaluate safety and efficacy of zanubrutinib and lenalidomide as maintenance therapy in patients with diffuse large B-cell lymphoma post complete remission and have completed planed courses of chemotherapy . Event-free survival (EFS), progression-free survival (PFS), overall survival (OS), adverse events (AEs) will be assessed.

Inclusion criteria

• Pathologically confirmed Diffuse Large B Cell Lymphoma according World Health Organization (WHO) classification;
• Patient is ≥ 18 years of age at the time of signing the informed consent form (ICF).
• Patient must understand and voluntarily sign an ICF prior to any study-specific assessments/procedures being conducted;
• Patient is willing and able to adhere to the study visit schedule and other protocol requirements;
• Patient has recieved complete remission and has completed planed courses of chemotherapy
• Meet the following lab criteria: Absolute Neutrophil Count (ANC) ≥ 1,5 x 10^9/L (≥ 1 x 10^9/L if bone marrow (BM) involvement by lymphoma)；Platelet ≥ 75 x 10^9/L (≥ 50 x 10^9/L if BM involvement by lymphoma)； Hemoglobin ≥ 8 g/dL. Anticipated life expectancy at least 3 months

Exclusion criteria

• Active or uncontrolled infections requiring systemic treatment within 14 days before enrollment;
• Any instability of systemic disease, including but not limited to severe cardiac, liver, kidney, or metabolic disease need therapy;
• Pregnant or lactating women