ChiCGB vs BEAM in High-risk or R/R Lymphomas

Inclusion Criteria: * Patients with primary refractory or recurrent diffuse large B cell lymphoma or extra-nodal NK/T cell lymphoma that do not qualify for treatment protocols of higher priority. * Relapsed patients should respond to 2nd or 3rd line salvage chemotherapy and attain at least partial response before recruitment. * Adequate renal function, as defined by estimated serum creatinine clearance \>/=50 ml/min and/or serum creatinine \</= 1.8 mg/dL. * Adequate hepatic function, as defined by serum glutamate oxaloacetate transaminase (SGOT) and/or serum glutamate pyruvate transaminase (SGPT) \</= 3 x upper limit of normal; serum bilirubin and alkaline phosphatase \</= 2 x upper limit of normal. * Adequate pulmonary function with forced expiratory volume at one second (FEV1), forced vital capacity (FVC) and diffusing capacity of lung for carbon monoxide (DLCO) \>/= 50% of expected corrected for hemoglobin. * Adequate cardiac function with left ventricular ejection fraction \>/= 50%. No uncontrolled arrhythmias or symptomatic cardiac disease. * Performance status 0-1. 10. Negative Beta diffusing capacity of the lung for carbon monoxide (HCG) text in a woman with child-bearing potential, defined as not post-menopausal for 12 months or no previous surgical sterilization Exclusion Criteria: * Central nervous system lymphoma * Patients relapsed after autologous stem cell transplantation * Bone marrow was involved by lymphoma * Patients with active hepatitis B or C(HBV DNA \>/=10,000 copies/mL). * Active infection requiring parenteral antibiotics * HIV infection, unless the patient is receiving effective antiretroviral therapy with undetectable viral load and a normal cluster of differentiation 4 (CD4) counts * Evidence of either cirrhosis or stage 3-4 liver fibrosis in patients with chronic hepatitis C or positive hepatitis C serology. * Patients with a corrected QT interval(QTc) longer than 500 ms