Syndax Announces Publication of Pivotal Revumenib Data in Relapsed or Refractory mNPM1 Acute Myeloid Leukemia in the Journal Blood

Core Insights - Syndax Pharmaceuticals announced positive results from the pivotal Phase 2 portion of the AUGMENT-101 trial for revumenib in relapsed or refractory mutant NPM1 acute myeloid leukemia (mNPM1 AML) patients, achieving nearly 50% overall response rate [1][2] - The company submitted a supplemental New Drug Application (sNDA) for revumenib in April 2025 under the FDA's Real-Time Oncology Review (RTOR) program [1][2] Group 1: Trial Results - The primary efficacy endpoint was met with a complete remission (CR) plus CR with partial hematological recovery (CRh) rate of 23% among the first 64 adult patients [5] - The overall response rate (ORR) was reported at 47%, with 17% of responders proceeding to hematopoietic stem cell transplant (HSCT) while in remission [6] - The median overall survival (OS) for all patients was 4.0 months, while responders had a median OS of 23.3 months [7] Group 2: Patient Demographics and Treatment Background - The efficacy-evaluable population had a median age of 65, with 36% having received three or more prior lines of therapy [4] - 75% of patients were previously treated with venetoclax, indicating a heavily pretreated population [4] Group 3: Safety Profile - The safety population included 84 patients, with treatment-emergent serious adverse events occurring in ≥5% of patients, including febrile neutropenia (21%) and differentiation syndrome (13%) [8] - The safety profile of revumenib was consistent with previously reported data, with 12% of patients experiencing dose reductions due to adverse events [8] Group 4: Background on mNPM1 AML - Mutations in the NPM1 gene are the most common genetic alteration in adult AML, observed in approximately 30% of cases [9] - There are currently no approved targeted therapies specifically for mNPM1 AML, highlighting a significant unmet medical need [9] Group 5: Revumenib Overview - Revumenib is an oral, first-in-class selective menin inhibitor, previously approved for R/R acute leukemia with KMT2A translocation [10][11] - The drug is in development for R/R mNPM1 AML, with ongoing trials planned for combination therapies [11]