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Drugs & Targets

Daiichi Sankyo, Merck collaborate to develop and commercialize MK-6070, an investigational delta-like ligand 3 targeting T-cell engager

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Daiichi Sankyo and Merck have expanded their existing global co-development and co-commercialization agreement for three investigational DXd antibody-drug conjugates to include Merck’s MK-6070, an investigational delta-like ligand 3 targeting T-cell engager. 

The companies will jointly develop and commercialize MK-6070 worldwide, except in Japan where Merck will maintain exclusive rights. Merck will be solely responsible for manufacturing and supply for MK-6070.

MK-6070 is a T-cell engager targeting DLL3, an inhibitory canonical Notch ligand that is expressed at high levels in small cell lung cancer and neuroendocrine tumors, currently being evaluated in a phase I/II clinical trial (NCT04471727). The companies are planning to evaluate MK-6070 in combination with ifinatamab deruxtecan in certain patients with SCLC, as well as other potential combinations. Merck obtained MK-6070 through its acquisition of Harpoon Therapeutics.

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