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Pfizer's palbociclib wins 'breakthrough' status

This article was originally published in Scrip

Executive Summary

Pfizer's experimental breast cancer agent palbociclib, an oral and selective inhibitor of cyclin dependent kinases 4 and 6, is the latest compound to gain the FDA's much sought-after breakthrough therapy designation – triggering a nearly 6% stock boost on 10 April for the company's partner Onyx Pharmaceuticals, which is entitled to 8% of the royalties on any worldwide sales of the product.



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