• Age: 18-70 years old, gender is not limited;

• According to the REAL/WHO classification, the newly diagnosed diffuse large b-cell lymphoma with follicular lymphoma (CDLBCL-FL): the same lymph node specimen showed diffuse large b-cell lymphoma and follicular lymphoma, or the tissue specimen showed diffuse large b-cell lymphoma and indolent lymphoma in bone marrow pathology; or the different group specimens suggested diffuse large b-cell lymphoma and/or follicular lymphoma, respectively, with stage II-IV.

• Using the Lugano 2014 lymphoma response evaluation criteria, there must be at least one measurable or evaluable lesion: PET/CT can evaluate the lesion, CT or MRI can evaluate the lesion in the node with a diameter greater than 1.5 cm, a short diameter greater than 1.0 cm, or an extranodal lesion with a diameter greater than or equal to 1.0 cm

• ECOG 0-2

• Left ventricular ejection fraction (LVEF) was less than 45%

• HBV-positive serology (occult carriers: anti-HBeAg +, anti-HBsAg-, anti-HBsAg +/-) can only be enrolled if the HBV-dna test is negative.

• Normal major organ function: liver function: serum bilirubin ≤2.0 × ULN, serum ALT and AST ≤2.5 × ULN, renal function: serum CR ≤2.0 × ULN; (unless caused by lymphoma)

• Absolute neutrophil count (ANC)≥1.0 × 109 l, platelet count (PLT)≥100 × 109 L, hemoglobin content (HGB)≥80 g L, if myeloma was involved, ANC ≥0.75 × 109 L, platelet count (PLT)≥50 × 109 L, HGB content (HGB) was not required.

• Life expectancy ≥6 months

⁃ Informed consent (all studies had to sign a patient's informed consent form)