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Most Creative People

Yvonne Greenstreet

SVP and Head of Medicines Development, Specialty Care

Most Creative People

Dr. Yvonne Greenstreet oversees late-stage development of some of the most innovative drug research on the planet, such as Xeljanz, a rheumatoid arthritis medication taken orally; analysts project that it could be worth $2.3 billion to Pfizer by 2018. She is also passionate about "personalized medicine," targeted therapies for carriers of particular genes.

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