A Study of SNDX-5613 in Combination With Intensive Chemotherapy in Participants With Acute Myeloid Leukemias

The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics, and clinical activity of SNDX-5613 in combination with intensive chemotherapy in participants with newly diagnosed acute myeloid leukemia (AML) harboring alterations in KMT2A, NPM1, or NUP98 genes.

Inclusion Criteria: * Established, pathologically confirmed diagnosis of AML by World Health Organization 2022 criteria. * Previously untreated AML and eligible to receive intensive chemotherapy. * KMT2Ar, NPM1c, or NUP98r mutations identified by local laboratory prior to the first dose of SNDX-5613. * Eastern Cooperative Oncology Group performance status ≤2 and ≤1 if \>65 years old . * Adequate liver, kidney, and cardiac function. Exclusion Criteria: * Diagnosis of acute promyelocytic leukemia. * Clinically active central nervous system leukemia (blasts detected in cerebrospinal fluid, radiographic or clinical signs and symptoms). * Fridericia's corrected QT interval (QTcF) \>450 milliseconds (average of triplicate), diagnosis or suspicion of Long QT syndrome or family history of Long QT syndrome. * Any gastrointestinal issue of the upper gastrointestinal tract that might affect oral drug absorption or ingestion. * Cirrhosis with a Child-Pugh score of B or C. * Any of the following within the 6 months prior to study entry: myocardial infarction, uncontrolled/unstable angina, congestive heart failure (New York Heart Association Classification Class ≥II), life-threatening, uncontrolled arrhythmia, cerebrovascular accident, or transient ischemic attack. * Hepatitis B, Hepatitis C, or HIV-positive with detectable viral load. * Documented active, uncontrolled infection. * Uncontrolled disseminated intravascular coagulation. * Lactating/breast feeding or pregnant. * Use of prohibited concomitant chemotherapy, radiation therapy, or immunotherapy. * Use of strong CYP3A4 inducers or inhibitors (except for Itraconazole, Ketoconazole, Posaconazole, or Voriconazole).