Aeterna Zentaris Announces Exclusive License Agreement and Research Contract with Julius-Maximilians-University Wuerzburg for Development of a Potential Oral Prophylactic Bacterial Vaccine Against COVID-19 - Seite 2

Prof. Thomas Rudel of the University added, “We are looking forward to our collaboration with Aeterna and a new phase of accelerated preclinical and potential clinical development. Our oral vaccine candidates based on the Salmonella Typhi Ty21a vaccine platform technology open the possibility to integrate more than one SARS-CoV-2 related antigen into the expression system of the modified vaccine bacteria and may improve the immune response of an individual against mutated viruses.”

About the Potential COVID-19 Vaccine

The approved Salmonella Typhi Ty21a bacterial strain is the basis of the new vaccine approach against corona virus infections. The typhoid fever vaccine Ty21a is effective, safe, easy to handle, and the capsule formulation can be stored at fridge temperature of 2°C to 8°C. The most common vaccine capsule Vivotif has been used worldwide in more than 150 million administered doses.

The carrier strain has been modified by plasmid insertion with two expression cassettes together with a special E. coli-based secretion system to secrete two or more coronavirus antigens fused to an immunological adjuvant peptide. Additionally, a balanced lethal system based on an essential tRNA synthetase has been integrated to stabilize the plasmid in the absence of antibiotic resistance genes. The specific bacterial vector strain is expected to enable oral application and release of the proteins into the gut system which may consequently stimulate mucosal and systemic immunity.

Transaction Terms and Conditions

On March 14, 2021, the Company exercised the Option and entered into the License Agreement. Pursuant to the terms of the License Agreement, the Company has been granted an exclusive, world-wide, license to certain patents and know-how owned by the University to research and develop, manufacture, and sell a potential COVID-19 vaccine using the University’s bacterial vaccine platform technology (the “Licensed Rights”). The Company will pay an up-front payment under the License Agreement of €140,000 as well as make certain milestones payments to be paid upon the achievement of certain development, and regulatory and sales milestones as well as a percentage of any sub-licensing revenue received by the Company and royalty payments on net sales of the licensed vaccine products (including for by the Company or its sub-licensees). The License Agreement will expire upon the latter of (i) the existence of a valid patent claim of a Licensed Right or (ii) 10 years after the first commercial sale of a product that was developed, manufactured, marketed, and sold using a least one Licensed Right. The License Agreement may be terminated by the Company by providing six (6) months’ notice to the University.