On July 31, 2025 Instil Bio, Inc. (Nasdaq: TIL, "Instil") noted that ImmuneOnco Biopharmaceuticals (Shanghai) Inc. (HKEX Code: 1541.HK) ("ImmuneOnco"), reported preliminary safety and efficacy data from the Phase 2 open-label, multicenter study of IMM2510/AXN-2510 (‘2510) in combination with chemotherapy for front-line patients with advanced non-small cell lung cancer (NSCLC) conducted in China by ImmuneOnco (Press release, ImmuneOnco Biopharma, JUL 31, 2025, View Source [SID1234654682]).
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As of July 1, 2025, 33 patients were dosed at 10 mg/kg, with 21 patients having at least one tumor assessment (efficacy evaluable). Partial responses were observed in 62% of efficacy evaluable patients, comprising partial responses in 80% (8/10) of patients with squamous NSCLC and 46% (5/11) of patients with non-squamous NSCLC. The majority of efficacy evaluable patients had only one tumor assessment at data cut-off. ImmuneOnco expects to present safety and efficacy data in the ‘2510 chemotherapy combination trial in front-line NSCLC at a future medical conference.
The ‘2510 safety profile supports further clinical development, with no dose-limiting toxicities observed in the 33 safety evaluable patients. In these patients, there were no treatment-related adverse events (TRAE) leading to dose reduction or death, and only one TRAE leading to drug discontinuation. The most common Grade 3+ TRAEs were hematologic, with uncommon clinical sequelae. Adverse events typically associated with VEGF inhibition (e.g., hypertension, proteinuria, hemoptysis) and immune-related adverse events were uncommon and generally low-grade, and infusion-related reactions were nearly all low-grade.
"‘2510 has demonstrated early but compelling activity in front-line NSCLC patients," said Professor Caicun Zhou, M.D., Ph.D., director of the Department of Oncology at Shanghai East Hospital, Tongji University, and lead investigator on the study of ‘2510 in 1L NSCLC. "The PD-(L)1xVEGF bispecific class has the potential to become the new standard of care for front-line NSCLC, and I look forward to the generation of additional data with ‘2510 in this setting."
Dr. Tian Wenzhi, CEO of ImmuneOnco, said "We are delighted to witness the progress of ‘2510 in front-line non-small cell lung cancer (NSCLC). This data paves the way for its advancement into Phase 3 clinical studies and provides valuable insights to support further research across multiple indications."
"We are pleased with the preliminary clinical results of the combination of ‘2510 with chemotherapy in patients with front-line NSCLC, which suggest the potential for best-in-class efficacy in the promising PD-(L)1xVEGF bispecific antibody class," said Bronson Crouch, CEO of Instil. "We look forward to further public updates from ImmuneOnco on these data, as well as the initiation of our previously announced US phase 1 clinical trial before the end of this year."
About IMM2510/AXN-2510
IMM2510/AXN-2510 is a PD-L1xVEGF bispecific antibody in development for the treatment of multiple solid tumors. IMM2510/AXN-2510 is differentiated from other PD-(L)1xVEGF bispecific antibodies by its VEGF trap, which binds multiple VEGF receptor ligands beyond VEGF-A, a bispecific structure which leverages PD-L1 as an anchor in the tumor microenvironment (TME), and enhanced antibody-dependent cellular cytotoxicity (ADCC) to direct killing of PD-L1-positive tumor cells.
About ImmuneOnco
ImmuneOnco is a clinical-stage biotech company focused on discovery and development of biologics to treat cancers, autoimmune diseases and metabolic diseases. With 10+ assets all originated in-house and the most advanced asset in phase III right now, ImmuneOnco is pursuing innovative therapies to improve patients’ health. For more information visit www.immuneonco.com.