- Criteria for exclusion are Human immunodeficiency virus (HIV) or Human T-lymphotropic virus (HTLV) seropositivity, pregnancy, cardiac ejection fraction by echo-cardiogram less than 40%, active central nervous system involvement, serum creatinine greater than 1.6 mg/dl or serum bilirubin greater than 1.5 mg/dl unless due to tumor, Absolute neutrophil count (ANC) less than 1,000/mm3 and platelets less than 100,000/mm3 unless due to tumor, performance status (ECOG scale) greater than 2, pulmonary function test- diffusing capacity of the Lung for Carbon Monoxide (DLCO) less than 40% of predicted, and severe concomitant medical or psychiatric illnesses.