After Clofarabine administration, there will be short resting period of 7-14 days. After the resting period, the patient will start receiving conditioning chemotherapy regimen (other standard of care drugs to better prepare your body for the stem cell transplant). This regimen will begin 15-21 days after they first received Clofarabine, and consists of additional treatment (chemotherapy and/or radiation). The type of treatment(s) the patient will receive for conditioning is dependent on the type of disease. In addition, this treatment will be decided by your doctor and is independent of this research. The duration of the conditioning period is variable and may take between 5-8 days. Stem cells are usually given one day after the completion of this regimen, which will be between 21 and 30 days after the patient has first received Clofarabine.