| Inclusion Criteria: | 1) Previously untreated AML and high-risk MDS (>/= 10% blasts or >/= IPSS intermediate-2). Prior therapy with hydroxyurea, biological or targeted therapy (e.g. flt3 inhibitors, other kinase inhibitors, azacitidine), or hematopoietic growth factors is allowed.
2) Age >/= 60 years.
3) ECOG performance status </= 2.
4) Adequate hepatic (serum total bilirubin </= 1.5 x ULN, SGPT and/or SGOT </= 2.5 x ULN) and renal function (creatinine </= 1.5 mg/dL).
5) Sign written informed consent |