Mersana Therapeutics Inc. is getting $100 million up front in an option deal with GSK plc for preclinical-stage antibody-drug conjugate (ADC) XMT-2056, which could bring up to $1.36 billion more in an option exercise payment, development, regulatory and commercial milestones. It’s the second potential $1 billion-plus ADC deal for Cambridge, Mass.-based Mersana in 2022 and the first for its Immunosynthen platform, which uses a STING agonist payload specifically designed for ADCs.
Elevation Oncology Inc. has picked up the global rights to SYSA-1801, an anti-Claudin 18.2 antibody-drug conjugate (ADC) candidate, from CSPC Megalith Biopharmaceutical Co. Ltd. in a deal worth up to $1.195 billion. Under the terms, Elevation gets rights to develop and commercialize SYSA-1801 outside of mainland China, Hong Kong, Macau and Taiwan.
Sichuan Kelun-Biotech Pharmaceutical Co. Ltd. out-licensed an investigational antibody-drug conjugate (ADC) for the treatment of solid tumors to Merck & Co. Inc. in a deal worth up to $936 million. Sichuan, China-based Kelun-Biotech will receive $35 million up front in the deal and is eligible to receive up to $901 million in future development, approval and commercial milestone payments, as well as tiered royalties on net sales.