The purpose of this study is to learn if 5'-Azacitidine will help to lower the risk of the disease coming back after a stem cell transplant in patients with MDS and AML. This study will also be looking at the side effects of this medicine.
5'-Azacitidine is an FDA approved drug for treatment of MDS and AML, as well as patients whose disease came back after transplant, where it helped going into remission. It is unclear if 5'-Azacitidine can prevent the disease from coming back after transplant. This study will help show if getting 5'-Azacitidine soon after transplant can lower the risk of your disease coming back.