Affymax, Inc. and Takeda Pharmaceutical Company Limited announced that their Omontys(R) (peginesatide) product collaboration and license agreement will terminate effective September 10, 2014. In February 2013, Affymax and Takeda voluntarily recalled all lots of Omontys and suspended promotional activities in the U.S. following postmarketing reports of serious hypersensitivity reactions including anaphylaxis, which may be life-threatening or fatal. Takeda has conducted a detailed investigation of these reactions.

The investigation has confirmed no quality or manufacturing issues were present but has not identified a specific root cause for the reactions that were observed. Based on these findings and related discussions with Takeda, Affymax has elected not to exercise its rights with respect to the Omontys New Drug Application (NDA). Takeda will work with the U.S. Food and Drug Administration to withdraw the Omontys NDA.

The Board of Directors of Affymax is reviewing its strategic options as a result of the termination of the collaboration with Takeda.