Keymed Biosciences Inc., ("Keymed")and Lepu Biopharma Co., Ltd, jointly announce a global exclusive licence agreement with AstraZeneca  for CMG901, a potential first-in-class Claudin 18.2 antibody drug conjugate (ADC). Under the licence agreement, AstraZeneca will be responsible for the research, development, manufacture and commercialisation of  CMG901 globally. CMG901 is currently in a Phase I clinical trial for the treatment of Claudin 18.2-positive solid tumors. Preliminary results from the Phase 1 trial indicated that CMG901 has a favorable safety and tolerability profile, and encouraging anti-tumor efficacy across the dose levels tested. Under the terms of the agreement, KYM Biosciences, the joint venture established by Keymed and Lepu Biopharma, will receive an upfront payment of $63m on transaction closing and additional development and sales-related milestone payments of up to $1.1bn as well as tiered royalties up to low double-digits. The transaction is expected to close in the first half of 2023, subject to customary closing conditions and regulatory clearances. CMG901 is a novel antibody drug conjugate targeting Claudin 18.2, and consists of an anti-Claudin 18.2 monoclonal antibody, a protease-degradable linker, and a cytotoxic small molecule monomethyl auristatin E (MMAE). CMG901 is being developed for the treatment of solid tumours that express the cell surface protein Claudin 18.2, including gastric cancers. CMG901 is owned by KYM Biosciences Inc. (KYM), a joint venture established by affiliates of Keymed Biosciences (70% of KYM ownership) and Lepu Biopharma (30% of KYM
ownership).