Test Extracorporeal Photopheresis (ECP) Treatment Before/After Allogeneic Bone Marrow Transplant (BMT) or Peripheral Blood Stem Cell (PBSC) Transplant to Prevent Graft Versus Host Disease

"Patients will receive 2 ECP treatments prior to the commencement of the high dose chemotherapy and then for two consecutive days every two weeks starting from post engraftment (ANC \> 500) up to day 90 (total of 10 treatments). This may be given as an outpatient procedure.~The dose of UVADEX® used to inoculate these cells will be calculated based on the treatment volume collected during the plasma/buffy coat collection process, using the following formula:~Treatment Volume in mL X 0.017 of UVADEX® (20 mcg/ml) required for administration into the recirculation bag = Amount of UVADEX® (in mLs) required for administration into the recirculation bag.~After the cells are inoculated with UVADEX®, the buffy coat/plasma suspension is irradiated with ultraviolet-A light and then re-infused back into the patient."