Keryx Biopharmaceuticals to present KRX-0401 Phase 1/2 clinical trial data at the ASH meeting

Keryx Biopharmaceuticals, Inc. (Nasdaq: KERX) today announced that data from its Phase 1/2 clinical trial of KRX-0401 (perifosine) in combination with bortezomib (+/- dexamethasone) has been selected for poster presentation at the upcoming 51st Annual Meeting of the American Society of Hematology (ASH), to be held in New Orleans from December 5-8, 2009. The clinical data to be presented demonstrates the potential safety and efficacy of KRX-0401 in the treatment of patients with relapsed/refractory multiple myeloma.

Details on the Abstract selected for poster presentation are as follows: Abstract #: 1869 TITLE: Perifosine in Combination with Bortezomib and Dexamethasone Extends Progression-Free Survival and Overall Survival in Relapsed/Refractory Multiple Myeloma Patients Previously Treated with Bortezomib: Updated Phase I/II Trial Results Lead Author: Paul Richardson, MD Session Name: Myeloma - Therapy, excluding Transplantation Poster I Date: Saturday, December 5, 2009 Presentation Time: 5:30 PM - 7:30 PM Location: Ernest N. Morial Convention Center, Hall E Poster Board no.: I-891

This abstract became available for viewing yesterday on the American Society of Hematology website (www.hematology.org). At the time of the abstract submission in mid-August 2009, there were 84 patients enrolled on study, of which 73 were evaluable for efficacy and are reported on within the abstract. Updated efficacy (response rate, time-to-progression and survival) and safety analyses, as of mid-November 2009, will be presented at the conference.

A copy of the above referenced abstract can be viewed online through the ASH website, www.hematology.org.

KRX-0401 (perifosine) is in-licensed by Keryx from Aeterna Zentaris, Inc. (Nasdaq: AEZS; TSX: AEZ) in the United States, Canada and Mexico.