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

Syndax Pharmaceuticals logo

Syndax Pharmaceuticals

Status and phase

Enrolling
Phase 1

Conditions

Acute Myeloid Leukemias

Treatments

Drug: SNDX-5613
Drug: Chemotherapy Regimen
Drug: HiDAC

Study type

Interventional

Funder types

Industry

Identifiers

NCT06226571
SNDX-5613-0708
2024-514531-18-00 (EU Trial (CTIS) Number)

Details and patient eligibility

About

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.

Full description

The Dose Escalation portion of this study will identify the maximum tolerated dose, or if different, the recommended Phase 2 dose of SNDX-5613 to be used in combination with intensive chemotherapy and in maintenance monotherapy following intensive chemotherapy in participants with newly diagnosed AML harboring alterations in KMT2A, NPM1, or NUP98 genes.

In the Dose Expansion portion of the study, safety and preliminary efficacy of SNDX-5613 may be explored in expansion cohorts at tolerated dose levels.

In both Dose Escalation and Dose Expansion, the treatment period will consist of an induction phase (up to 2 cycles), a consolidation phase (up to 4 cycles and could include hematopoietic stem cell transplant for participants who are transplant eligible and have an available donor), and a maintenance monotherapy phase with SNDX-5613. The cycle duration will be 28 days.

Enrollment

76 estimated patients

Sex

All

Ages

18 to 75 years old

Volunteers

No Healthy Volunteers

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).

Trial design

Primary purpose

Treatment

Allocation

N/A

Interventional model

Sequential Assignment

Masking

None (Open label)

76 participants in 1 patient group

SNDX-5613
Experimental group
Description:
Dose Escalation: * Induction: Sequential cohorts of escalating dose levels of SNDX-5613 with chemotherapy regimen. * Consolidation: Cohorts will receive high-dose cytarabine (HiDAC) chemotherapy followed by SNDX-5613. * Maintenance Monotherapy: Cohorts will receive SNDX-5613. Dose Expansion: * Induction: SNDX-5613 at tolerated dose level with chemotherapy regimen. * Consolidation: Cohorts will receive SNDX-5613 with chemotherapy regimen and HiDAC. * Maintenance Monotherapy: Cohorts will receive SNDX-5613.
Treatment:
Drug: HiDAC
Drug: Chemotherapy Regimen
Drug: SNDX-5613

Trial contacts and locations

10

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Central trial contact

Syndax Pharmaceuticals

Data sourced from clinicaltrials.gov

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