Aeterna Zentaris to Announce First Quarter 2017 Financial and Operating Results on May 8, 2017

Aeterna Zentaris Inc. (NASDAQ: AEZS)(TSX: AEZS) (the “Company”) will announce its first quarter 2017 financial and operating results after market close on Monday, May 8, 2017. The Company will host a conference call and webcast to discuss these results on Tuesday, May 9, 2017 at 8:30 a.m. Eastern Time.

Participants may access the live webcast via the Company’s website at www.aezsinc.com, or by telephone using the following number: 201-689-8029, Confirmation #13658332. A replay of the webcast will also be available on the Company’s website for a period of 30 days.

About Aeterna Zentaris Inc.

Aeterna Zentaris is a specialty biopharmaceutical company engaged in developing and commercializing novel treatments in oncology, endocrinology and women’s health. We are engaged in drug development activities and in the promotion of products for others. We recently completed Phase 3 studies of two internally developed compounds. The focus of our business development efforts is the acquisition of licenses to products that are relevant to our therapeutic areas of focus. We also intend to license out certain commercial rights of internally developed products to licensees in non-U.S. territories where such out-licensing would enable us to ensure development, registration and launch of our product candidates. Our goal is to become a growth-oriented specialty biopharmaceutical company by pursuing successful development and commercialization of our product portfolio, achieving successful commercial presence and growth, while consistently delivering value to our shareholders, employees and the medical providers and patients who will benefit from our products. For more information, visit www.aezsinc.com.

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Aeterna Zentaris Inc.Philip A. Theodore, 843-900-3223Senior Vice [e-mail]