Æterna Zentaris to Announce Fourth Quarter Full Year 2009 Financial and Operating Results on March 24, 2010

QUÉBEC CITY, March 17 /PRNewswire-FirstCall/ - Æterna Zentaris Inc. (NASDAQ: AEZS, TSX: AEZ) (the "Company"), a late-stage drug development company specialized in oncology and endocrinology, will announce its fourth quarter and full year 2009 financial and operating results before market open on Wednesday, March 24, 2010. The Company will host a conference call and webcast to discuss these results later that same day at 10:00 a.m., Eastern Time.

Participants may access the live webcast via the Company's website at www.aezsinc.com in the "Investors" section, or by telephone using the following numbers: 888-231-8191 (North America), or 647-427-7450 or 514-807-9895 (Canada). A replay of the webcast will also be available on the Company's website for a period of 30 days.

About Æterna Zentaris Inc.

Æterna Zentaris Inc. is a late-stage drug development company specialized in oncology and endocrinology. News releases and additional information are available at www.aezsinc.com.

SOURCE AETERNA ZENTARIS INC.