Daiichi Sankyo and Merck , known as MSD outside the U.S. and Canada, have expanded their global co-development and co-commercialization agreement to include Merck’s MK-6070, an investigational DLL3-targeting T-cell engager. This partnership excludes Japan, where Merck retains exclusive rights, and Merck will handle all manufacturing and supply for MK-6070.
MK-6070, acquired through Merck’s acquisition of Harpoon Therapeutics, is currently in a Phase 1/2 clinical trial (NCT04471727) targeting DLL3, highly expressed in small cell lung cancer (SCLC) and neuroendocrine tumors. The companies plan to evaluate MK-6070 in combination with ifinatamab deruxtecan (I-DXd) for SCLC and other potential combinations.
Ken Takeshita, MD, global head of R&D at Daiichi Sankyo, stated that this expansion aligns with their strategy to set new cancer care standards. He highlighted the synergy between MK-6070 and their established antibody-drug conjugate collaboration, particularly with I-DXd.
Dr. Dean Y. Li, president of Merck Research Laboratories, emphasized the urgent need for new treatments for aggressive SCLC. He expressed enthusiasm for the expanded collaboration with Daiichi Sankyo and the potential of combining MK-6070 and ifinatamab deruxtecan in treating SCLC and other cancers.