Filing of Clinical Trial Application (CTA) in Prostate Cancer Expected in Q4 2012
QUEBEC CITY, Oct. 2, 2012 /PRNewswire/ - Aeterna Zentaris Inc. (NASDAQ: AEZS) (TSX: AEZ) (the "Company") today announced that preclinical data on its oral prostate cancer vaccine candidate, AEZS-120, were presented over the weekend at the 32nd Congress of the Société Internationale d'Urologie, which is being held in Fukuoka, Japan. The presentation underlined the feasibility of an oral therapeutic vaccination approach against prostate cancer. Furthermore, safety pharmacology and toxicology data suggest that the profile of AEZS-120 is similar to the approved carrier strain and, therefore, pave the way for Phase 1 clinical testing.
Juergen Engel, PhD, President and CEO at Aeterna Zentaris, commented, "Now that we have completed the preclinical development program for AEZS-120, we look forward to filing a Clinical Trial Application in Europe during this quarter, in order to initiate a Phase 1 clinical trial in prostate cancer with this novel oral anticancer vaccine."
Summary and Conclusions
The production, release, pharmacology, safety and toxicology program was conducted in agreement with the regulatory authorities and successfully finalized:
- The proof of concept has been shown in a tumor-challenge mouse model using the anticipated clinical application schedule;
- Biosafety and biodistribution studies did not reveal a different safety profile compared to the carrier strain;
- Pharmacological and toxicological studies did not reveal differences to the approved carrier strain;
- In all, the non-clinical studies suggest that the safety and toxicological profile of AEZ-120 is similar to the approved carrier strain S. typhi Ty21a, which has already been safely applied in more than 250 million doses;
- GMP material for clinical use has been produced and released; and CTA filing for Phase 1 clinical study is planned in 4Q 2012.
The poster titled, "Preclinical Proof of Concept and Characterization of AEZS-120, a Therapeutic Oral Prostate Cancer Vaccine Candidate Based on Live Recombinant Attenuated Salmonella", J. Fensterle, B. Bergmann, P. Schmidt, M. Teifel, J. Engel, T. Rudel, W. Goebel, and U. Rapp, can be viewed by clicking on the following link.
AEZS-120 is a live recombinant oral tumor vaccine candidate based on Salmonella typhi Ty21a as a carrier strain. Salmonella typhi Ty21a is an approved oral typhoid vaccine which has been safely applied in more than 250 million doses. The principle of AEZS-120 is based on the recombinant expression of prostate specific antigen fused to the B subunit of cholera toxin and a secretion signal in the presence of the Escherichia coli type I hemolysin secretion system. The proprietary system allows the secretion of the antigen, together with an immunological adjuvant which has been demonstrated to be required for optimal induction of CD8 T-cell responses by recombinant Salmonella based bacterial vaccines. The proof-of-concept was demonstrated for the mouse homologue of AEZS-120 in a mouse tumor-challenge model. In general, by varying the antigen and/or the carrier, this proprietary platform technology should be suitable for virtually any therapeutic or prophylactic vaccine indication with a favorable cost of goods expectation in large scale.
About Aeterna Zentaris
Aeterna Zentaris is an oncology and endocrinology drug development company currently investigating treatments for various unmet medical needs. The Company's pipeline encompasses compounds at all stages of development, from drug discovery through to marketed products. For more information please visit www.aezsinc.com.
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SOURCE AETERNA ZENTARIS INC.