
| October 4, 2006 |

Kyowa Hakko's original anticancer agent KW-2401 |

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On September 29th, 2006, Kyowa Hakko Kogyo Co., Ltd. (Kyowa Hakko) based in Tokyo, Japan (President and CEO: Dr. Yuzuru Matsuda) has entered into an agreement with Keryx Biopharmaceuticals, Inc.(Keryx) based in Manhattan, New York (Chairman and CEO: Mr. Michael S. Weiss) on Kyowa Hakko's original anticancer agent KW-2401 (UCN-01). Kyowa Hakko is committed to maximizing the value of its in-house developed drug candidates through efficient and effective development activities including alliances, thereby contributing to the health and well-being of people worldwide. Keryx Biopharmaceuticals Keryx Biopharmaceuticals (NASDAQ: KERX) was incorporated in 1998 and is engaged in the development and commercialization of in-licensed pharmaceutical products for the treatment of various diseases, including cancer and diabetes. It is now conducting clinical development of a drug for diabetic nephropathy, anticancer agents, etc. |