Affymax, Inc. is a biopharmaceutical company engaged in developing drugs to improve the treatment of serious and often life-threatening conditions. Its product candidate, peginesatide, is for the treatment of anemia in chronic kidney disease patients on dialysis. Peginesatide is a synthetic peptide-based erythropoiesis stimulating agent (ESA), designed to stimulate production of red blood cells. The Company has a worldwide collaboration to develop and commercialize peginesatide with Takeda Pharmaceutical Company Limited (Takeda). As of December 31, 2011, over 2,600 patients have received peginesatide in clinical trials. As of December 31, 2011, The New Drug Application (NDA) for peginesatide is under review by the United States, Food and Drug Administration (FDA). As of December 31, 2011, the Company has suspended its development efforts to treat anemia in non-dialysis patients and chemotherapy-induced anemia.