Trial of DA-EPOCH Regimen for NHL With HLH

Inclusion Criteria: 1 .Histologically confirmed non-Hodgkin's lymphoma; 2. Patients whose clinical findings satisfy either of HLH 2004 standard: 3. newly-diagnosed and untreated; 4. understand and voluntarily sign an informed consent form, able to adhere to the study visit schedule and other protocol requirements. HLH2004 standard at least 5 criteria out of the following: Fever ≥ 38.5 ℃ for ≥ 7 days; hepatosplenomegaly; Cytopenias affecting ≥ 2 of 3 lineages in PB Hb \< 9 g/L Platelet \< 100 x 109 /L ANC \< 1.0 x 109 /L; Hypertriglyceridemia and/or hypofibrinogenemia (fasting triglycerides ≥ 265 mg/dL, fibrinogen ≤ 1.5 g/L); Hemophagocytosis in BM or spleen or LN; Low or absent NK-cell activity ( according to local laboratory reference); Serum-ferritin ≥ 500 mcg/L ; Soluble CD25(sIL-2 receptor) ≥ 2,400 U/ml ; 3.New-diagnosed and untreated; 4.Understand and voluntarily sign an informed consent form, able to adhere to the study visit schedule and other protocol requirements. Exclusion criteria 1. primary HLH; 2. HLH from rheumatic disorder (such as systemic Lupus Erythematosus, adult onset still disease, antiphospholipid antibody syndrome); 3. pregnancy (as determined by serum or urine test) or active breast feeding; 4. concomitant malignancy other than NHL and need to treat; 5. concomitant with other hematologic diseases (such as leukemia, hemophilia primary myelofibrosis) which investigators considered it unsuitable to be enrolled into this clinical trial; 6. any potential drug abuse, medical, psychological or social conditions which may disturb this investigation and assessment; 7. in any conditions which investigator considered ineligible for this study