Shanghai, China and Dallas, TX, August 01, 2024 – ImmuneOnco Biopharmaceuticals (Shanghai) Inc. (HKEX Code: 1541.HK, “ImmuneOnco”) and Instil Bio, Inc. (Nasdaq: TIL, “Instil”), today announced a definitive agreement pursuant to which Instil is in-licensing ex-China development and commercial rights to ImmueOnco’s proprietary PD-L1xVEGF bispecific antibody, IMM2510, as well as its next-generation anti-CTLA-4 antibody IMM27M.

IMM2510 is a novel, potentially best-in-class bispecific antibody consisting of an anti-PD-L1 antibody fused to a vascular endothelial growth factor (VEGF) receptor “trap” which binds VEGF. IMM2510 is differentiated from other PD(L)1xVEGF antibodies by its ability to bind multiple VEGF receptor ligands beyond VEGF-A, a smaller molecular weight allowing for potentially better tumor penetration, and enhanced antibody-dependent cellular cytotoxicity (ADCC) designed to improve tumor killing. IMM2510 has completed a dose-escalation clinical trial for advanced solid tumors and demonstrated multiple responses including patients with squamous non-small cell lung cancer (NSCLC) who previously failed PD-1 inhibitors.

IMM27M is a next-generation anti-CTLA-4 antibody with enhanced ADCC activity, which has been designed to promote intratumoral regulatory T cell depletion to enhance the efficacy and reduce the toxicity associated with first-generation anti-CTLA-4 antibodies. IMM27M has completed a dose-escalation clinical trial demonstrating anti-tumor activity in patients with advanced solid tumors and has entered combination studies with IMM2510 in China in July 2024.

Terms of License and Collaboration Agreement

Under the terms of the agreement, a wholly owned subsidiary of Instil will receive global development and commercialization rights for IMM2510 and IMM27M outside of Greater China, while ImmuneOnco will retain development and commercialization rights in Greater China including Taiwan, Macau, and Hong Kong. ImmuneOnco will receive an upfront payment and potential near-term payments of up to $50 million as well as potential additional development, regulatory, and commercial milestones exceeding $2 billion plus single digit to low double-digit percentage royalties on global ex-China sales.

About ImmuneOnco

ImmuneOnco is a clinical-stage biotech company focused on discovery and development of biologics to treat cancers and other 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

About Instil Bio

Instil Bio is a clinical-stage biopharmaceutical company focused on developing a pipeline of novel therapies. Instil’s lead asset, IMM2510, is a novel and differentiated PD-L1xVEGF 

bispecific antibody in development for the treatment of multiple solid tumor cancers. For more information visit www.instilbio.com.

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