Related Party Transactions and Outside Related Director Information

Keryx Biopharmaceuticals, Inc. (KERX)

5/1/2006 Proxy Information

During 2005, we paid I. Craig Henderson, M.D., our President, $50,559 for the use of space in a building he owns in San Francisco, California by Keryx employees as an office and as a temporary residence for such employees while they worked in California. We also paid Dr. Henderson $52,500 for the use of his residence in New York, New York by our employees as a temporary residence while they worked in our New York office.