AEterna Zentaris To Present At Upcoming UBS Global Specialty Pharmaceutical Conference In New York And At Bio Finance 2006 In Toronto

QUEBEC CITY, April 18 /PRNewswire-FirstCall/ - AEterna Zentaris Inc. today announced that Gilles Gagnon, President and Chief Executive Officer of the Company, will present a corporate update at the UBS Global Specialty Pharmaceutical Conference on Monday, April 24, 2006, at 1:30 p.m. ET, at the Grand Hyatt Hotel in New York. A live webcast of this presentation will be available on AEterna Zentaris’ website in the Investors section at www.aeternazentaris.com.

Furthermore, Dennis Turpin, Vice President and Chief Financial Officer at AEterna Zentaris will make a presentation at Bio Finance 2006 on Thursday, May 4, 2006, at 9 a.m. ET at the Marriott Eaton Centre in Toronto.

About AEterna Zentaris Inc.

AEterna Zentaris Inc. is a growing global biopharmaceutical company engaged in the discovery, development and marketing of therapies for cancer and endocrine disorders.

AEterna Zentaris also owns 48.4% of the equity of Atrium Biotechnologies Inc. and 64.8% of its voting rights. Atrium is a developer, manufacturer and marketer of science-based products for the cosmetics, pharmaceutical, chemical and nutritional industries.

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

AETERNA ZENTARIS INC. (FORMERLY/ANCIENNEMENT - LES LABORATOIRES AETERNA

CONTACT: Media Relations: Paul Burroughs, (418) 652-8525 ext. 406,paul.burroughs@aeternazentaris.com; Investor Relations: Jenene Thomas,(418) 655-6420 or (908) 996-3154, jenene.thomas@aeternazentaris.com

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