Eisai’s strategic collaboration with Bristol Myers Squibb ended

1 July 2024

Japanese drugmaker Eisai (TYO: 4523) today announced it is ending its global strategic collaboration with Bristol Myers Squibb (NYSE: BMY) for the co-development and co-commercialization of farletuzumab ecteribulin (FZEC).

Formerly known as MORAb-202, the drug is a folate receptor alpha (FRα)-targeting antibody drug conjugate (ADC), Eisai says the decision is due to ongoing portfolio prioritization efforts within Bristol Myers. Eisai’s shares closed up 1.1% despite the news.

As a result, Eisai now owns all rights to FZEC and will solely conduct the global development and commercialization of the agent. Eisai will accelerate the development of the agent as a high priority with the hope to deliver it to patients as early as possible.

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