Oral Presentation:a Phase II study of ATG-008 (mTORC1/2 Inhibitor) combined with PD-1 antibody in patients with cervical cancer ", SEHK: 6996.HK), a leading innovative, commercial-stage global biopharmaceutical company dedicated to discovering, developing and commercializing first-in-class and/or best-in-class medicines for cancer, today announced one oral presentation, three poster presentations and a journal publication at the 2024 American Society of Clinical Oncology (ASCO) Annual Meeting, taking place from May 31st to June 4th at the McCormick Place Convention Center in Chicago, IL, the United States.
Details of the Oral Presentation:
Session: Clinical Science Symposium – Stronger Together: Novel Combinations Across the Gynecologic Cancer Spectrum Time: 1:15 PM - 2:45 PM (Central Daylight Time)
2:15 AM - 3:45 AM, June 2, 2024 (Beijing Time)
31 checkpoint inhibitor (CPI)-naïve cervical cancer patients who previously had at least one systemic line of chemotherapy were enrolled in the TORCH-2 study as of Oct 20th 2023. In general, ATG-008 in combination with toripalimab are very well tolerated. The most common grade ≥ 3 treatment-related adverse events (TRAEs) included rash (12.9%), decreased lymphocyte count (9.7%), and decreased platelet count (6.5%). Encouraging response rates and disease stabilization were observed in patients, regardless of PD-L1 expression, with further data being collected in an ongoing expansion cohort for CPI-treated cervical cancer. Details of the Poster Presentations:
Session: Developmental Therapeutics—Immunotherapy
Time: 9:00 AM - 12:00 PM (Central Daylight Time)
10:00 PM, June 1 - 1:00 AM, June 2, 2024 (Beijing Time)
ATG-031 is a first-in-class CD24 antibody that promotes cancer cell phagocytosis and T cell activity by disrupting the CD24-Siglec-10 interaction on macrophages, while also triggering antibody-dependent cell-mediated cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC). The Phase I PERFORM study is designed to evaluate the safety and preliminary efficacy of ATG-031 in patients with advanced solid tumors or B-cell non-Hodgkin's lymphoma, employing a dose-escalation phase with a Bayesian Optimal Interval (BOIN) design and a dose-expansion phase with two or more dose levels to determine the recommended phase II dose (RP2D). As of April 2024, the study is underway in 4 U.S. sites, and the first dose level has been cleared.
(Claudin 18.2 Antibody-drug Conjugate)
Session: Developmental Therapeutics—Molecularly Targeted Agents and Tumor Biology Time: 9:00 AM - 12:00 PM (Central Daylight Time)
10:00 PM, June 1 - 1:00 AM, June 2, 2024 (Beijing Time)
As of October 9th, 2023, 10 patients have been enrolled, receiving doses ranging from 0.3 to 2.4 mg/kg. The most common grade ≥ 3 TRAEs included nausea, vomiting, and decreased appetite, each occurring in 30% of patients. No dose-limiting toxicities (DLTs) were reported. Preliminary efficacy data among 7 gastric cancer patients across multiple doses in the Phase I dose escalation demonstrated one complete response (CR) in a patient with gastric cancer (2.4 mg/kg, CLDN 18.2-negative) and one partial response (PR) in another patient (1.8 mg/kg, CLDN 18.2 expression undetermined). ATG-022 demonstrated tolerability, safety, and potential anti-tumor activity. A Phase II trial is currently enrolling patients with gastric cancer and other solid tumors. Time: 9:00 AM - 12:00 PM (Central Daylight Time)
10:00 PM, June 3 - 1:00 AM, June 4, 2024 (Beijing Time)
As of December 25th, 2023, 12 patients were enrolled, with no DLTs observed, and the maximum tolerated dose (MTD) was not reached. The most common adverse events included asthenia, neutropenia, and nausea/vomiting. Grade ≥ 3 adverse events occurred in 58.3% of patients. The ORR was 72.7% among 11 efficacy evaluable patients, including a CR rate of 36.4%. The combination showed a tolerable safety profile and promising efficacy.
Details of the Journal Publication:
Session: Publication Only: Developmental Therapeutics – Molecularly Targeted Agents and Tumor Biology At the 20 mg BID level, no DLTs were observed, and pharmacokinetic analysis revealed effective ERK inhibition at this dose. Common treatment-emergent adverse events (TEAEs) were consistent with previously reported toxicities with other ERK pathway inhibitorsERK pathway inhibitors (gastrointestinal, skin, and ocular adverse events). Efficacy data showed that one patient (4.8%) achieved a PR, while 8 patients (38%) achieved stable disease (SD).
"Antengene", SEHK: 6996.HK) is a leading commercial-stage R&D-driven global biopharmaceutical company focused on the discovery, development, manufacturing and commercialization of innovative first-in-class/best-in-class therapeutics for the treatment of hematologic malignancies and solid tumors, in realizing its vision of "Treating Patients Beyond Borders".
Since 2017, Antengene has built a pipeline of 9 oncology assets at various stages going from clinical to commercial, including 6 with global rights, and 3 with rights for the APAC region. To date, Antengene has obtained 29 investigational new drug (IND) approvals in the U.S. and Asia, and submitted 10 new drug applications (NDAs) in multiple Asia Pacific markets, with the NDA for XPOVIO® (selinexor) already approved in Mainland of China, Taiwan China, Hong Kong China, Macau China, South Korea, Singapore and Australia. Forward-looking statements
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