PALO ALTO, Calif.--(BUSINESS WIRE)--Affymax, Inc. (Nasdaq: AFFY) today announced that the U.S. Food and Drug Administration has assigned a Prescription Drug User Fee Act (PDUFA) action date of March 27, 2012 for the review of the investigational agent peginesatide (formerly known as Hematide™) New Drug Application (NDA). The company had announced on July 27, 2011 that the FDA accepted the peginesatide NDA submission for review.