Founded in 1992, Emeryville-based Onyx Pharmaceuticals Inc. has 275 employees. It developed and sells Nexavar, a drug that treats liver and kidney cancer. Worldwide sales of the drug last year reached $844 million; company revenue was $251 million in 2009. Onyx has an agreement with Bayer Corp. to share development expenses and profits in nearly all countries.
Onyx last year acquired Proteolix Inc. and with it a late-stage clinical molecule called carfilzomib to treat blood cancer. Carfilzomib is in clinical trials and is expected to be available next year.
