Key Inclusion Criteria:

• Patients must have a documented NPM1 mutation or KMT2A rearrangement and have either newly diagnosed or relapsed/refractory AML
• Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2
• Adequate liver, renal, and cardiac function according to protocol defined criteria
• A female of childbearing potential must agree to use adequate contraception from the time of screening through 180 days following the last dose of study intervention. A male of childbearing potential must agree to use abstinence or adequate contraception from the time of screening through 90 days following the last dose of study intervention

Key Exclusion Criteria:

• Diagnosis of either acute promyelocytic leukemia or blast chronic myelomonocytic leukemia
• Known history of BCR-ABL alteration
• Advanced malignant hepatic tumor [for patients receiving ven/aza combination]
• Administration of live attenuated vaccines within 14 days prior to, during, or after treatment until B-cell recovery
• Active central nervous system (CNS) involvement by AML.
• Clinical signs/symptoms of leukostasis or WBC > 25,000 / microliter. Hydroxyurea and/or leukapheresis are permitted to meet this criterion
• Not recovered to Grade ≤1 (NCI-CTCAE v5.0) from all nonhematological toxicities except for alopecia
• Known clinically active human immunodeficiency virus, active hepatitis B or active hepatitis C infection
• For newly diagnosed cohorts: received prior chemotherapy for leukemia, except hydroxyurea and/or leukapheresis to control leukocytosis, prior treatment with all-transretinoic acid for initially suspected acute promyelocytic leukemia, or non-HMA therapy for prior myelodysplastic syndrome
• For relapsed/refractory cohorts: received chemotherapy, immunotherapy, radiotherapy, or any ancillary therapy that is considered to be investigational < 14 days prior to the first dose of ziftomenib or within 5 drug half-lives prior to the first dose of study drug
• Uncontrolled intercurrent illness including, but not limited to, cardiac illness as defined in the protocol
• Mean corrected QT interval corrected for heart rate by Fredericia's formula (QTcF) >480 ms on triplicate ECGs
• Uncontrolled infection
• Women who are pregnant or lactating
• An active malignancy and currently receiving chemotherapy for that malignancy or disease that is uncontrolled/progressing

Eligibility last updated 8/2/23. Questions regarding updates should be directed to the study team contact.