• Age 18 -80 years old;

• Histologically confirmed transformed DLBCL;

• ECOG 0-2;

• Signed informed consent form.

• Having sufficient organ function: a) Hematopoietic function: Neutrophils ≥ 1.0 × 109/L, PLT ≥ 75 × 109/L, Hb ≥ 90g/L(unless caused by underlying disease, as judged by the investigator, such as extensive bone marrow involvement, or hypersplenism secondary to lymphoma splenic involvement); b) Liver function: bilirubin ≤1.5 times the upper limit of normal (ULN), ALT and AST\<3 x ULN, serum albumin ≥ 30 g/L; c) Renal function: serum Cr\<1.5 × ULN, creatinine clearance rate ≥ 50mL/min (calculated according to the standard Cockcroft Gault formula, if renal dysfunction is caused by tumor compression, creatinine clearance rate ≥ 30mL/min); d) Left ventricular ejection fraction (LVEF) ≥ 50% detected by echocardiography.