Nivolumab and Azacitidine With or Without Ipilimumab in Treating Patients With Refractory/Relapsed or Newly Diagnosed Acute Myeloid Leukemia

Inclusion Criteria: * ARM 1 SALVAGE COHORT: Patients with AML or biphenotypic or bilineage leukemia who have failed prior therapy; patients with AML should have failed prior therapy or have relapsed after prior therapy will be eligible for Arm 1; * ARM 2 SALVAGE COHORT: Patients with AML who have failed up to one prior salvage therapy (i.e. salvage 1 or 2 status) will be eligible for Arm 2 relapse cohort; allogeneic stem cell transplant for patients in remission at the time of stem cell transplant will not be considered a salvage regimen; similarly, hydroxyurea if used alone will not be considered a salvage regimen * ARM 1 AND 2 FRONT LINE OLDER COHORT: Patients age 65 years and above with previously untreated AML who are unfit for or decline standard induction therapy; prior therapy with hydroxyurea, biological or targeted therapy (e.g. FLT3 inhibitors, other kinase inhibitors), or hematopoietic growth factors is allowed, however prior therapy with chemotherapy agents for the disease under study is not allowed; patients may have received one dose of cytarabine (up to 2 g/m2 administered at presentation for control) of hyperleucocytosis * Patients with myelodysplastic syndrome (MDS) or chronic myelomonocytic leukemia (CMML) who received therapy for the MDS or CMML and progress to AML are eligible at the time of diagnosis of AML regardless any prior therapy for MDS or CMML; the World Health Organization (WHO) classification will be used for AML; prior therapy for MDS or CMML …