AEterna Zentaris to Present at Upcoming CIBC World Markets Annual Biotechnology & Specialty Pharmaceuticals Conference in New York

QUEBEC CITY, April 5 /PRNewswire-FirstCall/ - AEterna Zentaris Inc. today announced that its President and Chief Executive Officer, David J. Mazzo, Ph.D., will present a Company overview at the CIBC World Markets Annual Biotechnology & Specialty Pharmaceuticals Conference on Wednesday, April 11, 2007 at 10:20 a.m. ET, in Room 3.05 of the Millennium Broadway Hotel in New York City.

A live webcast of this presentation will be available on the Company’s website at www.aeternazentaris.com in the Investors section. A replay will also be available for a period of 30 days.

About AEterna Zentaris Inc.

AEterna Zentaris Inc. is a late-stage, global biopharmaceutical company focused on endocrine therapy and oncology with proven expertise in drug discovery, development and commercialization.

News releases and additional information are available at www.aeternazentaris.com.

AETERNA ZENTARIS INC.

CONTACT: Jenene Thomas, Senior Director, Investor Relations & CorporateCommunications, (418) 655-6420, jenene.thomas@aeternazentaris.com; PaulBurroughs, Media Relations, (418) 652-8525, ext. 406,paul.burroughs@aeternazentaris.com

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