Clinical Trial of Upfront Haploidentical or Unrelated Donor BMT to Restore Normal Hematopoiesis in Aplastic Anemia

"Drugs:~1. Antithymocyte Globulin (ATG) dose will be 0.5 mg/kg IV on Day -9 over 6 hours and 2 mg/kg IV on Days -8 and -7 over 4 hours.~2. Fludarabine dose will be 30 mg/m\^2 IV daily for 5 days from Day -6 to Day -2.~3. Cyclophosphamide dose will be 14.5 mg/kg IV daily for 2 days (Day -6 to Day -5) prior to transplantation and 50 mg/kg IV daily for 2 days (Day +3 to Day +4) after transplantation.~4. Tacrolimus should be started on Day +5 and administered to maintain a level of 10-15 ng/mL.~5. Mycophenolate mofetil (MMF) dose will be 15 mg/kg PO three times a day (TID) up to 1 gm TID (or IV equivalent) starting on Day +5 through Day +35.~6. G-CSF will be given IV or SQ starting on Day +5 at 5 mcg/kg/day until ANC is \> 1500 for 3 days.~Radiation:~1\. Total Body Irradiation (TBI): will be given as a single dose of 400 cGy on Day -1.~Procedure:~1\. HSCT: Eligible patients will receive a haploidentical donor bone marrow transplant."

"Drugs:~1. Antithymocyte Globulin (ATG) dose will be 0.5 mg/kg IV on Day -9 over 6 hours and 2 mg/kg IV on Days -8 and -7 over 4 hours.~2. Fludarabine dose will be 30 mg/m\^2 IV daily for 5 days from Day -6 to Day -2.~3. Cyclophosphamide dose will be 14.5 mg/kg IV daily for 2 days (Day -6 to Day -5) prior to transplantation and 50 mg/kg IV daily for 2 days (Day +3 to Day +4) after transplantation.~4. Tacrolimus should be started on Day +5 and administered to maintain a level of 10-15 ng/mL.~5. Mycophenolate mofetil (MMF) dose will be 15 mg/kg PO three times a day (TID) up to 1 gm TID (or IV equivalent) starting on Day +5 through Day +35.~6. G-CSF will be given IV or SQ starting on Day +5 at 5 mcg/kg/day until ANC is \> 1500 for 3 days.~Radiation:~1\. Total Body Irradiation (TBI): will be given as a single dose of 400 cGy on Day -1.~Procedure:~1\. HSCT: Eligible patients will receive an unrelated donor bone marrow transplant."