Study Design This is a prospective randomized trial to determine the effectiveness of different doses of GVHD prophylaxis on mucositis, engraftment and aGVHD. Study consists of two study groups of 50 subjects each.
Group A will receive Tac and MTX (15 mg/m2 day +1, 10 mg/m2 day +3, +6, +11). Group B will receive Tac, Mini-dose MTX (5 mg/m2 on day +1, +3, +6) and MMF.