Study of the Safety, Tolerability, Pharmacokinetics and Pharmacodynamic Properties of Oral AT-406 in Combination With Daunorubicin and Cytarabine in Patients With Poor-risk Acute Myelogenous Leukemia (AML)

This is an open label, multi-center, dose escalation study to determine the MTD of oral AT-406 combined with daunorubicin and cytarabine in patients with poor-risk AML. Treatment with AT-406 will be administered to up to 60 patients at approximately 7 investigational sites in the US. Patients will be enrolled in open label sequential cohorts of up to 12 patients to determine the MTD of AT-406 in combination with daunorubicin and cytarabine. Dose finding will occur during the induction cycle of the regimen. AT-406 will not be administered in consolidation cycles. Patients who require re-induction during initial treatment will be removed from the study and replaced (if needed) in order to assess at least 3 evaluable patients at each dose level. Clinical and laboratory parameters will be assessed to evaluate the toxicity of AT-406. In addition, pharmacokinetic (PK) and pharmacodynamic (PDy) blood samples will be analyzed for plasma concentrations and PDy effect of AT-406, respectively.