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Merck Hands Betrixaban Back to Portola Pharmaceuticals

By Catherine Shaffer

Friday, March 25, 2011
Portola Pharmaceuticals Inc. is taking back its rights from Merck and Co. Inc. for betrixaban, a Factor Xa inhibitor being developed for stroke. Merck reviewed and reprioritized its late-stage investigational portfolio, and did not find a place for betrixaban. The return of rights to the Phase III-ready product gives Portola an opportunity to develop the drug independently.

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