On November 25, 2020 Antengene Corporation Limited ("Antengene", HKSE stock code: 6996.HK), a leading innovative biopharmaceutical company dedicated to discovering, developing and commercializing global first-in-class and/or best-inclass therapeutics in hematology and oncology, reported that the National Medical Products Administration (NMPA) has approved the clinical trial of ATG-016 (eltanexor) in patients with intermediate and higher risk myelodysplastic syndrome (MDS) according to the Revised International Prognostic Scoring System (IPSS-R) after the failure of hypomethylating agents (HMA) based therapy (Press release, Antengene, NOV 25, 2020, View Source [SID1234571754]). The trial is a Phase I/II, single-arm, open-label clinical study, aiming to evaluate the pharmacokinetics, safety and efficacy of ATG-016 (eltanexor) monotherapy.
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MDS is a heterogeneous group of clonal disorders of the bone marrow hematopoietic stem cells (HPSCs), characterized by ineffective hematopoiesis with peripheral blood cytopenia and a higher risk for developing acute myeloid leukemia (AML). Patients with high-risk MDS refractory to hypomethylating agents have a median overall survival (OS) of only 4 to 6 months with limited options for follow-up treatment. Pre-clinical studies have demonstrated that selective inhibitor of nuclear export (SINE) compounds are able to block the nuclear export of many tumor suppressor proteins (e.g. p53, IkB, p21) leading to their accumulation and activation in the nucleus thereby exerting anti-tumor effects. In addition, SINE compounds can also reduce the nuclear export and translation of many oncogenic mRNA (c-Myc, Bcl-2, Bcl-6, cyclin D) which are bound to elF4E and result in selective apoptosis of tumor cells. ATG-016 is a member of the latest-generation of SINE compounds. Compared to the first-generation nuclear export inhibitor, ATG-016 demonstrates minimal blood-brain barrier permeability and a broader therapeutic window. It has shown preliminary anti-cancer activity in high-risk MDS patients.
Dr. Jay Mei, the Founder, Chairman and CEO of Antengene expressed, "The approval of the ATG-016 clinical trial demonstrates the efficient execution of the Antengene R&D team and is also the first clinical trial approval obtained by Antengene in mainland China after its listing." He also mentioned, "Selinexor, the first-generation selective inhibitor of nuclear export, has shown extensive activity against hematological malignancies and solid tumors, and has been approved by the FDA for relapsed/refractory multiple myeloma and diffuse large B-cell lymphoma. As a second-generation orally available SINE compound, ATG-016 can reduce the blood-brain barrier penetration, thereby representing a broader therapeutic window with potentially less adverse events and better drug tolerability."
About ATG-016
ATG-016 (eltanexor) is a second-generation selective inhibitor of nuclear export compound. Compared to the