Mitoxantrone Active Not Recruiting Phase 1 Trials for AML Arising After Exposure to Genotoxic Injury / Newly Diagnosed Acute Myeloid Leukemia (AML) / Untreated AML / AML Arising From Antecedent Hematologic Disorder (AHD) / AML Arising From Myelodysplastic Syndrome (MDS) Treatment