Patients who have met the inclusion criteria will receive a myeloablative dose of radiation followed by an alloHSCT. Acute radiation and transplant related toxicity will be evaluated as the maximum value on the National Cancer Institute Common Terminology Criteria for Adverse Events, version 4.0 (CTCAE v.4), during the first 30 days following the transplantation and the LENT-SOMA Radiation Toxicity Scale. The radiation dose to the lungs and kidneys as well as the total dose received by the other organs will be considered independently for the purposes of determining the maximum tolerated radiation dose for that body region.