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Ref Type | Journal Article | ||||||||||||
PMID | (36922589) | ||||||||||||
Authors | Perner F, Stein EM, Wenge DV, Singh S, Kim J, Apazidis A, Rahnamoun H, Anand D, Marinaccio C, Hatton C, Wen Y, Stone RM, Schaller D, Mowla S, Xiao W, Gamlen HA, Stonestrom AJ, Persaud S, Ener E, Cutler JA, Doench JG, McGeehan GM, Volkamer A, Chodera JD, Nowak RP, Fischer ES, Levine RL, Armstrong SA, Cai SF | ||||||||||||
Title | MEN1 mutations mediate clinical resistance to menin inhibition. | ||||||||||||
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Abstract Text | Chromatin-binding proteins are critical regulators of cell state in haematopoiesis1,2. Acute leukaemias driven by rearrangement of the mixed lineage leukaemia 1 gene (KMT2Ar) or mutation of the nucleophosmin gene (NPM1) require the chromatin adapter protein menin, encoded by the MEN1 gene, to sustain aberrant leukaemogenic gene expression programs3-5. In a phase 1 first-in-human clinical trial, the menin inhibitor revumenib, which is designed to disrupt the menin-MLL1 interaction, induced clinical responses in patients with leukaemia with KMT2Ar or mutated NPM1 (ref. 6). Here we identified somatic mutations in MEN1 at the revumenib-menin interface in patients with acquired resistance to menin inhibition. Consistent with the genetic data in patients, inhibitor-menin interface mutations represent a conserved mechanism of therapeutic resistance in xenograft models and in an unbiased base-editor screen. These mutants attenuate drug-target binding by generating structural perturbations that impact small-molecule binding but not the interaction with the natural ligand MLL1, and prevent inhibitor-induced eviction of menin and MLL1 from chromatin. To our knowledge, this study is the first to demonstrate that a chromatin-targeting therapeutic drug exerts sufficient selection pressure in patients to drive the evolution of escape mutants that lead to sustained chromatin occupancy, suggesting a common mechanism of therapeutic resistance. |
Molecular Profile | Treatment Approach |
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Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
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Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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Revumenib | Revuforj | SNDX5613|SNDX 5613|SNDX-5613 | MEN1-KMT2A Inhibitor 8 | Revuforj (revumenib) inhibits the interaction between Menin and KMT2A (MLL), potentially resulting in antitumor activity and decreased proliferation of tumor cells with KMT2A (MLL) rearrangements or NPM1 mutations (PMID: 36922593, PMID: 36922589). Revuforj (revumenib) is FDA-approved for use in adult and pediatric patients 1 year and older with relapsed or refractory acute leukemia harboring KMT2A translocation (FDA.gov). |
Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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KMT2A rearrange | acute myeloid leukemia | predicted - sensitive | Revumenib | Case Reports/Case Series | Actionable | In a Phase I trial (AUGMENT-101), Revuforj (revumenib) treatment resulted in an initial response with morphological leukemia-free states in 2 patients with acute myeloid leukemia harboring KMT2A rearrangements (PMID: 36922589; NCT04065399). | 36922589 |