The spate of recent deals involving antibody-drug conjugates (ADC) continues in a field composed of record-breaking agreements in 2023. The newest of the deals were focused on Asia. GSK plc entered a license deal for the exclusive rights for clinical development and commercialization of Hansoh Pharmaceutical Co. Ltd.’s B7-H3-targeted ADC, HS-20093. Also, South Korea’s Dong-A ST Co. Ltd. is expanding into the ADC space by acquiring Abtis Co. Ltd. and its Abclick platform for ADC drug development.

Elpiscience Biopharma Ltd. is out-licensing to Astellas Pharma Inc. two preclinical bispecific macrophage engagers – ES-019, an anti-PD-L1/SIRPα bispecific antibody, and another unnamed program – in a deal worth up to $1.7 billion. The deal marks the Shanghai-based company’s first out-licensing deal, Elpiscience CEO Darren Ji told BioWorld, noting that Astellas will have global rights to both molecules with a potential to in-license two more.

Compugen Ltd. has entered another collaboration, this time exclusively licensing a preclinical antibody program against an IL-18 binding protein with Gilead Sciences Inc. Compugen will handle ongoing preclinical development and a phase I study of COM-503 to treat tumors, then Gilead receives to sole right to further continue developing the asset. Compugen is getting an up-front $60 million and is eligible for a $30 million milestone payment should the IND clear in 2024. Compugen also is eligible for $758 million in development, regulatory and commercial milestones, putting the deal value at $848 million.

South Korean pharmaceuticals Celltrion Inc. and Cyron Therapeutics Co. Ltd. are teaming up to discover and develop bispecific and trispecific antibodies, collectively called polyspecific antibodies, under the ₩1.158 trillion (US$882.38 million) joint research agreement inked on Dec. 6. Under the terms, privately held Daegu-based Cyron will discover and develop at least three polyspecific antibodies for blood and solid cancers pre-selected by Incheon-based Celltrion via Cryon’s CD-3 targeting T-cell engager platform that helps engage T cells to attack cancer cells.

Prescient Therapeutics Pty Ltd.’s PTX-100 met primary safety endpoints and showed preliminary efficacy in a phase Ib trial in patients with relapsed and refractory T-cell lymphomas that exceeded the standard of care, and the company hopes to advance to a phase II registrational study in 2024, Prescient CEO Steven Yatomi-Clarke told BioWorld.

Systimmune Inc. and Bristol Myers Squibb Co. have joined hands in a co-development deal for bispecific antibody drug conjugate (ADC) BL-B01D1 in a deal worth up to $8.4 billion. The deal falls on the heels of BMS acquiring Mirati Therapeutics in October 2023 for $4.8 billion to add to its oncology pipeline.

Systimmune Inc. and Bristol Myers Squibb Co. have joined hands in a co-development deal for bispecific antibody drug conjugate (ADC) BL-B01D1 in a deal worth up to $8.4 billion. The deal falls on the heels of BMS acquiring Mirati Therapeutics in October 2023 for $4.8 billion to add to its oncology pipeline.

Samsung Bioepis Co. Ltd. will partner with South Korean biotech Intocell Inc. to develop antibody-drug conjugate (ADC) drugs, continuing the Samsung Group and the wider industry’s hunt for novel ADCs. Under the joint research agreement inked on Dec. 5, the Daejon-based ADC platform technology firm Intocell will supply the Songdo, Incheon-based Samsung Bioepis its linker technology, coined OHPAS, or ortho-hydroxy protected aryl sulfate, upon which Samsung Bioepis will develop ADC drugs for up to five cancer targets.