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 will not be considered as a prior therapy for AML, hence such patients will be considered as frontline AML and eligible for the frontline elderly cohort
• Prior therapy with hydroxyurea, chemotherapy, biological or targeted therapy (e.g. FLT3 inhibitors, other kinase inhibitors), or hematopoietic growth factors is allowed
• Eastern Cooperative Oncology Group (ECOG) performance status = = 50
• Patients must provide written informed consent
• In the absence of rapidly progressing disease, the interval from prior treatment to time of initiation of 5-azacytidine and nivolumab will be at least 2 weeks OR at least 5 half-lives for cytotoxic/noncytotoxic agents; the half-life for the therapy in question will be based on published pharmacokinetic literature (abstracts, manuscripts, investigator brochure's, or drug-administration manuals) and will be documented in the protocol eligibility document; since the effect of both nivolumab and 5-azacytidine may be delayed; use of one dose of cytarabine (up to 2 g/m2) or hydroxyurea for patients with rapidly proliferative disease is allowed before the start of study therapy and during the study treatment; concurrent therapy for central nervous system (CNS) prophylaxis or continuation of therapy for controlled CNS disease is permitted
• Females must be surgically or biologically sterile or postmenopausal (amenorrheic for at least 12 months) or if of childbearing potential, must have a negative serum or urine pregnancy test within 72 hours before the start of the treatment
• Women of childbearing potential must agree to use an adequate method of contraception during the study and until 3 months after the last treatment; males must be surgically or biologically sterile or agree to use an adequate method of contraception during the study until 3 months after the last treatment; adequate methods of contraception include: total abstinence when this is in line with the preferred and usual lifestyle of the patient; periodic abstinence (e.g., calendar, ovulation, symptothermal, post-ovulation methods) and withdrawal are not acceptable methods of contraception; female sterilization (have had surgical bilateral oophorectomy with or without hysterectomy) or tubal ligation at least six weeks before taking study treatment; in case of oophorectomy alone, only when the reproductive status of the woman has been confirmed by follow up hormone level assessment; male sterilization (at least 6 months prior to screening); for female patients on