GAD-M Regimen As First-Line Treatment in Untreated Extranodal NK/T Cell Lymphoma

Inclusion Criteria: * Histologic diagnosis of NK/T Cell Lymphoma; * Age:18-80 years; * Weight：Male：67±20Kg（47-87Kg），Female：55±20Kg（35-75Kg） * Eastern Cooperative Oncology Group (ECOG) status 0-3, Estimated survival time \> 3 months; * No history of other malignancies; No other current tumors； * Normal haematological, liver and renal function (WBC count≥3.5×109/L, Hemoglobin≥100g/L, platelet count≥90×109/L, bilirubin\<1.5×ULN, Alanine transaminase (ALT) and Aspartate Aminotransferase (AST)\<2.5×ULN, serum creatinine\<1.5×ULN), normal coagulation function and cardiac function; * Clinical staging I-IV； * No previous treatments including chemotherapy, radiotherapy, targeted therapy or stem cell transplantation; * Appreciable and measurable lesions, clinical assessment \>2cm，CT or MRI \>1.5cm; * No other serious diseases which conflict with the treatment in the present trial; * No concurrent treatments that conflict with the treatments in the present trial(including steroid drugs); * Voluntary participation and signed the informed consent. Exclusion Criteria: * The patients had the conditions below: clinically significant ventricular tachycardia (VT), atrial fibrillation (AF), heart block, myocardial infarction (MI), congestive heart failure (CHF), symptomatic coronary artery heart disease requiring medication; * The patients suffered from organ transplant * The patients participated in other clinical trials within the 30 days before enrollment or who are participating in other clinical studies; * The patients with active bleeding or new thrombotic disease, who are taking anticoagulant drugs or with a history of bleeding tendencies，who with active infection; * The patients suffered before surgery less than four weeks, or after less than six weeks; * The patients with abnormal liver function (total bilirubin\> 1.5 times the normal value, ALT / AST\> 2.5 times normal), abnormal renal function (serum creatinine\> 1.5 times normal), blood abnormalities (absolute neutrophil count \<1.5 × 109 / L, platelets \<80 × 109 / L, hemoglobin \<90g /L) ; * The patients with mentally ill / unable to obtain informed consent; * The patients with drug addiction, alcohol abuse which affects the long-term evaluation of test results; * The patients in pregnancy, lactation and women of childbearing age who do not want to take contraceptive measures subjects; * Clinical and laboratory support brain metastases; * The patients with a history of allergy or adverse reaction(s) to test drug; * The patients not suitable to participate in the investigator judged by researchers.