Servier to acquire Day One, maker of pediatric cancer drug, for $2.5B

LONDON — The French pharma company Servier said Friday that it would buy Day One Biopharmaceuticals, the maker of a drug for childhood brain tumors, in a deal worth roughly $2.5 billion. 

Servier, which is privately held, is paying $21.50 a share in cash for Day One, a roughly 68% premium on the Bay Area biotech’s closing price on Thursday. 

The deal’s centerpiece is Day One’s Ojemda, which won U.S. approval in 2024 as a treatment for pediatric low-grade glioma, the most common form of childhood brain cancer. Servier said the deal would expand its pipeline of experimental medicines for rare cancers. 

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