AEterna Zentaris to Present at BIO 2005 in Philadelphia QUEBEC CITY, June 9 /PRNewswire-FirstCall/ -- AEterna Zentaris Inc. (TSX: AEZ; NASDAQ: AEZS) announced that Gilles Gagnon, President and Chief Executive Officer of the Company, will present a corporate update on Monday, June 20, 2005, at 4:45 p.m. (local time) in Room E of the Pennsylvania Convention Centre in Philadelphia. About AEterna Zentaris Inc. AEterna Zentaris Inc. is an oncology and endocrine therapy focused biopharmaceutical company with proven expertise in drug discovery, development and marketing. The Company's broad 20 product pipeline leverages six different therapeutic approaches, including LHRH antagonists and signal transduction inhibitors. The lead LHRH antagonist compound, cetrorelix, is currently marketed for in vitro fertilization under the brand name Cetrotide(R). Cetrorelix is also in late-stage clinical development for endometriosis and benign prostatic hyperplasia (BPH). The lead signal transduction inhibitor compound, perifosine, is a novel, first-in-class, oral anticancer agent that modulates several key signal transduction pathways, including AKT, MAPK, and JNK that have been shown to be critical for the survival of cancer cells. Perifosine has demonstrated single agent anti-tumor activity in Phase I and Phase II studies and is currently being studied as a single agent and in combination with several forms of anti-cancer treatments for various forms of cancer, including non-small cell lung cancer and breast cancer. AEterna Zentaris also owns 50.3% of Atrium Biotechnologies Inc. (TSX: ATB.sv), a leading developer, manufacturer and marketer of value-added products for the cosmetics, pharmaceutical, chemical and nutritional industries. News releases and additional information are available at http://www.aeternazentaris.com/ . DATASOURCE: AETERNA ZENTARIS INC. (FORMERLY/ANCIENNEMENT - LES LABORATOIRES AETERNA CONTACT: Media Relations: Paul Burroughs, (418) 652-8525 ext. 406, ; Investor Relations: Ginette Vallieres, (418) 652-8525 ext. 265, ; Europe: Matthias Seeber, +49 69 42602 3425, ; To request a free copy of this organization's annual report, please go to http://www.newswire.ca/ and click on reports@cnw

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