Ziftomenib in combination with venetoclax and azacitidine in relapsed/refractory NPM1-m or KMT2A-r acute myeloid leukemia: Updated phase 1a/b safety and clinical activity results from KOMET-007
Abstract
Introduction: Leukemogenesis is driven by nucleophosmin 1 mutations(NPM1-m) or lysine methyltransferase 2A rearrangements(KMT2A-r) in ~35–40% of acute myeloid leukemia (AML) cases. Nearly half of AML patients will develop relapsed/refractory (R/R) disease within a year, with <20% expected response rate following venetoclax/azacitidine (Ven/Aza) and progressively poorer outcomes with each subsequent line of therapy. Ziftomenib–a potent, highly selective, oral, investigational menin inhibitor–has demonstrated clinical activity as both monotherapy and in combination for adults with R/R NPM1-m or KMT2A-r AML. KOMET-007 (NCT05735184) is an ongoing, open-label, ph1a/b study of ziftomenib in combination with standard chemotherapies in adults with newly diagnosed and R/R NPM1-m or KMT2A-r AML. Here we present updated safety and clinical activity in patients with R/R AML treated with the recommended ph2 dose (RP2D) of ziftomenib 600 mg in combination with Ven/Aza across ph1a/b.
Methods: Adults (≥18y) with R/R NPM1-m or KMT2A-r AML enrolled independently into separate arms; patients in dose escalation (ph1a) and expansion (ph1b) were treated with oral ziftomenib 600 mg once daily (QD; continuously from C1D8 onward) plus standard doses of Ven/Aza. Primary endpoints: AEs, complete remission (CR; ELN 2022), dose limiting toxicities (DLT; ph1a only). Key secondary endpoints: composite CR (CRc; CR with full, partial or incomplete hematologic recovery), overall response, duration of…
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