AST/ALT =< x upper limit of normal (ULN) Patients must have AST and ALT =< . x institutional upper limit of normal (IULN) AST =< x upper limit of normal (ULN) AST and ALT =< . x institutional upper limit of normal (IULN) within days prior to registration Liver function abnormalities as indicated by ongoing hepatic enzyme elevation (AST or ALT) > times upper limit of normal (ULN) INCLUSION - TREATMENT: AST less than times the upper limit of normal AST and ALT ? upper limit of normal Hepatic: direct bilirubin ? x upper limit of normal, or AST/ALT ? x upper limit of normal AST ? x upper limit of normal AST and ALT ? x the upper limit of normal REP ELIGIBILITY: Serum ALT and AST less than three times the institutional upper limit of normal CHEMOTHERAPY/CELL INFUSION ELIGIBILITY: Serum ALT and AST less than three times the institutional upper limit of normal ALT < x upper limit of normal DONOR: ALT < x upper limit of normal AST and ALT =< x institutional upper limit of normal AST or ALT >= x ULN (upper limit of normal) ADDITIONAL CRITERIA FOR STUDY CONTINUATION: AST and ALT =< X upper level of normal RESEARCH PHASE INCLUSION CRITERIA: In patients with suspected liver disease, AST and ALT must be =< . times institutional upper limit of normal (ULN) AST and ALT times upper normal limit DONOR: ALT < x upper limit of normal Serum ALT and AST less than three times the institutional upper limit of normal AST and ALT > x upper limit of normal AST and ALT >= x upper limit of normal AST and ALT ? . times the upper limit of normal (ULN) AST and ALT ? . times the upper limit of normal (ULN) AST/ALT =< X upper limit of normal (ULN) AST and ALT ? times upper limit of normal (ULN) AST or ALT ? x the institutional upper limit of normal ALT and AST< X upper limit of normal AST/ALT > x upper limit of normal AST/ALT ? X ULN (upper limit of normal) AST/ALT =< x upper limit of normal (ULN) AST =< x upper limit of normal Serum AST and ALT ? . x Institutional upper limit of normal (ULN) ALT > . times upper normal limit (unless due to chronic GVHD) DONOR: ALT < x upper limit of normal AST =< x upper limit of normal AST or ALT greater than times upper limit of normal or greater than U/l. AST or ALT > x upper limit of normal POST-TRANSPLANT EXCLUSION CRITERIA:\r\n* Active grade II-IV acute graft versus host disease (GVHD)\r\n* Uncontrolled, life-threatening infection that is not responding to antimicrobial therapy\r\n* Serum creatinine > x upper limit of normal unless there is known CKD (creatinine must be at baseline for subjects with CKD)\r\n* AST or ALT > x upper limit of normal\r\n* Total bilirubin > x upper limit of normal\r\n* History of psychiatric disorder which may compromise compliance with the protocol or which does not allow for appropriate informed consent\r\n* Pregnancy\r\n* Concurrent use of any other investigational agents on a clinical trial\r\n* Known hypersensitivity to -azacytidine\r\n** Prior treatment with -azacytidine is allowed Sodium >= mg/dl and =< upper limit of normal AST/ALT ? X upper limit of normal DONOR: ALT < x upper limit of normal AST and ALT ? x upper limit of normal Patient's ALT must be < x institutional upper limit of norm ULN. ALT or AST ? twice the upper limit of normal (ULN), unless considered due to organ leukemic involvement; AST and ALT . X upper limit of normal AST/ALT =< . x upper limit of normal (ULN) AST and ALT