Decitabine Followed by Mitoxantrone Hydrochloride, Etoposide, and Cytarabine in Treating Patients With Relapsed or Refractory Acute Myeloid Leukemia or High-Risk Myelodysplastic Syndromes

Inclusion Criteria

• Prior diagnosis of "high-risk" myelodysplastic syndrome (MDS) (>= 10% blasts) or AML other than acute promyelocytic leukemia (APL) with t(15;17) (q22;q12) or variants according to the 2008 World Health Organization (WHO) classification; patients with biphenotypic AML are eligible
• Relapsed/persistent disease according to standard criteria requiring salvage therapy; outside diagnostic material is acceptable as long as peripheral blood and/or bone marrow slides are reviewed at the study institution; flow cytometric analysis of peripheral blood and/or bone marrow should be performed according to institutional practice guidelines
• Patients with prior autologous or allogeneic hematopoietic cell transplantation (HCT) are eligible if relapse occurs provided symptoms of graft-versus host disease are well controlled with stable use of immunosuppressive agents
• Treatment-related mortality (TRM) score = 100, 000/uL can be treated with leukapheresis or may receive up to 2 doses of cytarabine (up to 500 mg/m^2/dose) prior to enrollment
• Bilirubin = = 40%, assessed within 3 months prior to study day 1, e.g. by multi gated acquisition (MUGA) scan or echocardiography, or other appropriate diagnostic modality and no clinical evidence of congestive heart failure; if the patient had anthracycline-based therapy since the most recent cardiac assessment, cardiac evaluation should be repeated if there is clinical or radiographical suspicion of cardiac dysfunction, or if the previous cardiac assessment was abnormal
• Women of childbearing potential and men must agree to use adequate contraception
• Provide written informed consent

Exclusion Criteria

• Refractory/relapsing myeloid blast crisis of chronic myeloid leukemia (CML), unless patient is not considered candidate for tyrosine kinase inhibitor treatment
• Concomitant illness associated with a likely survival of < 1 year
• Active systemic fungal, bacterial, viral, or other infection, unless disease is under treatment with anti-microbials and/or controlled or stable (e.g. if specific, effective therapy is not available/feasible or desired [e.g. chronic viral hepatitis, human immunodeficiency virus (HIV)]); patient needs to be clinically stable as defined as being afebrile and hemodynamically stable for 24 hours; patients with fever thought to be likely secondary to leukemia are eligible
• Known hypersensitivity to any study drug
• Pregnancy or lactation
• Patients may not be receiving any other investigational agents