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AG-221, a First-in-Class Therapy Targeting Acute Myeloid Leukemia Harboring Oncogenic IDH2 Mutations
Published version of a preprint
Abstract
Somatic gain-of-function mutations in isocitrate dehydrogenases (IDH) 1 and 2 are found in multiple hematologic and solid tumors, leading to accumulation of the oncometabolite (R)-2-hydroxyglutarate (2HG). 2HG competitively inhibits α-ketoglutarate–dependent dioxygenases, including histone demethylases and methylcytosine dioxygenases of the TET family, causing epigenetic dysregulation and a block in cellular differentiation. In vitro studies have provided proof of concept for mutant IDH inhibition as a therapeutic approach. We report the discovery and characterization of AG-221, an orally available, selective, potent inhibitor of the mutant IDH2 enzyme. AG-221 suppressed 2HG production and induced cellular differentiation in primary human IDH2 mutation–positive acute myeloid leukemia (AML) cells ex vivo and in xenograft mouse models. AG-221 also provided a statistically significant survival benefit in an aggressive IDH2R140Q-mutant AML xenograft mouse model. These findings supported initiation of the ongoing clinical trials of AG-221 in patients with IDH2 mutation–positive advanced hematologic malignancies. Significance: Mutations in IDH1/2 are identified in approximately 20% of patients with AML and contribute to leukemia via a block in hematopoietic cell differentiation. We have shown that the targeted inhibitor AG-221 suppresses the mutant IDH2 enzyme in multiple preclinical models and induces differentiation of malignant blasts, supporting its clinical development. Cancer Discov; 7(5); 478–93. ©2017 AACR. See related commentary by Thomas and Majeti, p. 459. See related article by Shih et al., p. 494. This article is highlighted in the In This Issue feature, p. 443
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“A specific inhibitor of mutant IDH2, AG-221 (enasidenib) confers survival benefit in a mouse model of IDH2-mutant AML (Quivoron et al., 2014; Yen et al., 2017) and became the first compound targeting mutant IDH to enter clinical trials in 2014. Early results in IDH2-mutant AML patients have suggested enasidenib can provide clinical benefit (DiNardo et al., 2015; Stein et al., 2014), and this drug”
From Targeting Metabolism for Cancer Therapy (2017) · cites this paper as Yen et al., 2017
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“One route would be through direct inhibition of HNF4A or PPARGC1A, or alternatively through targeting their regulatory programmes as exemplified by IDH2 inhibition with enasidenib, a clinically approved drug (Yen et al., 2017; Stein et al., 2017).”
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“However, therapeutic resistance and isocitrate dehydrogenase differentiation syndrome occur in some IDH2/R140Q inhibitor-treated AML patients [8–10].”
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“24 We also used this mPDX model to test whether concurrent dual mutant IDH1 and IDH2 inhibition (IVO +ENA) is a potential strategy to overcome isoform switching, as previously suggested.”
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“In addition to strong preclinical data [57], approval was based on a single-arm, multicenter clinical trial of enasidenib that included 199 adults with R/R IDH2 -mutant AML (NCT01915498).”
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Metadata
- Authors
- Yen, K., Travins, J., Wang, F., David, M. D., Artin, E., Straley, K., Padyana, A., Gross, S., DeLaBarre, B., Tobin, E., Chen, Y., Nagaraja, R., Choe, S., Jin, L., Konteatis, Z., Cianchetta, G., Saunders, J. O., Salituro, F. G., Quivoron, C., Opolon, P., Bawa, O., Saada, V., Paci, A., Broutin, S., Bernard, O. A., de Botton, S., Marteyn, B. S., Pilichowska, M., Xu, Y., Fang, C., Jiang, F., Wei, W., Jin, S., Silverman, L., Liu, W., Yang, H., Dang, L., Dorsch, M., Penard-Lacronique, V., Biller, S. A., & Su, S.-S. M.
- Affiliations
- Agios Pharmaceuticals (United States) (US)
- Inserm (FR)
- 1Agios Pharmaceuticals, Inc., Cambridge, Massachusetts.
- Université Paris-Saclay (FR)
- 6Service de Pharmacologie, Département de Biologie et Pathologie Médicales, Gustave Roussy, Université Paris-Saclay, Villejuif, France.
- 2INSERM U1170, Villejuif, France.
- Tufts Medical Center (US)
- 11ShangPharma, Shanghai, China.
- Viva Biotech (China) (CN)
- Corresponding author
- Su, Shin-San Michael
- ORCID
- Yen, Katharine
- Wang, Fang
- David, Muriel D.
- Padyana, Anil
- Tobin, Erica
- Chen, Yue
- Choe, Sung
- Jin, Lei
- Konteatis, Zenon
- Salituro, Francesco G.
- Quivoron, Cyril
- Opolon, Paule
- Bawa, Olivia
- Saada, Véronique
- Broutin, Sophie
- Bernard, Olivier A.
- Marteyn, Benoît S.
- Pilichowska, Monika
- Jiang, Fan
- Wei, Wentao
- Liu, Wei
- Yang, Hua
- Dang, Lenny
- Venue
- Cancer Discovery
- Published
- 2017-04-30
- Volume
- 7
- Issue
- 5
- Pages
- 478-493
- ISSN
- 2159-8274 (ISSN-L)
- 2159-8290
- OpenAlex
- W2588385654
- Cited by
- 471
- References
- 52
- Citations by year
- 2026: 35 · 2025: 47 · 2024: 51 · 2023: 46 · 2022: 48 · 2021: 78 · 2020: 55 · 2019: 37 · 2018: 51 · 2017: 23
- FWCI
- 34.99
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Cancer Discovery (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Cancer Institute (INCa-DGOS-Inserm_6043 and INCa 2012-1-RT-09)
- Association pour la Recherche sur le Cancer (SL220130607089)
- Institut National Du Cancer (INCa-DGOS_5733)
- Topics
- Health Sciences › Medicine › Hematology › Acute Myeloid Leukemia Research
- Health Sciences › Medicine › Oncology › Glioma Diagnosis and Treatment
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Chromatin Remodeling and Cancer
- Keywords
- IDH2 inhibitors, acute myeloid leukemia, IDH2 mutation, 2-hydroxyglutarate, oncometabolites, hematopoietic differentiation, TET methylcytosine dioxygenases, histone demethylase, xenograft mouse model
- MeSH terms
- Aminopyridines, Animals, Antineoplastic Agents, Humans, Isocitrate Dehydrogenase, Mutation, Triazines, Leukemia, Myeloid, Acute, Xenograft Model Antitumor Assays, Cell Line, Tumor, Mice
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