Key Inclusion Criteria:

* Has been diagnosed with relapsed/refractory AML.
* Has a documented NPM1 mutation or KMT2A rearrangement.
* Has a documented FLT3 mutation (cA-3 only).
* Has an Eastern Cooperative Oncology Group (ECOG) Performance status ≤ 2.
* Has adequate hepatic and renal function as defined per protocol.
* Has an ejection fraction above a protocol defined limit.
* Participant, or legally authorized representative, must be able to understand and provide written informed consent prior to the first screening procedure.
* Has agreed to use contraception as defined per protocol.

Key Exclusion Criteria:

* Has a diagnosis of acute promyelocytic leukemia or blast chronic myeloid leukemia.
* Has clinically active central nervous system leukemia.
* Has an active and uncontrolled infection.
* Has a mean corrected QT interval (QTcF) \> 480ms.
* Has uncontrolled intercurrent illness, including, but not limited to protocol defined cardiac disease.
* Has received radiation, chemotherapy, immunotherapy, or any other anticancer therapy including investigational therapy \<14 days or within 5 drug half-lives prior to the first dose of study intervention.
* Has had major surgery within 4 weeks prior to the first dose of study intervention.
* Has received a hematopoietic stem cell transplant (HSCT) and has not previously had adequate recovery per protocol defined criteria.
* Has active graft-versus-host disease (GvHD) and or on immunosuppressive drugs for the treatment of GvHD
* Participant is pregnant or lactating.