New data demonstrates durable protective response for Appili’s vaccine candidate against Francisella tularensis, a Category A pathogen and potential biological weapons threat.

Presentation provides additional safety and efficacy data supporting use of ATI-1701 as a medical countermeasure, supports ongoing development under U.S. Food and Drug Administration’s medical countermeasure development guidelines.

Appili Therapeutics Inc., a biopharmaceutical company focused on anti-infective drug development, today announced that Dr. Carl Gelhaus, senior program manager of the Medical Countermeasures Division at MRIGlobal, will present positive interim data on Appili’s ATI-1701 program at the Chemical and Biological Defense Science & Technology Conference (CBD S&T). The conference is being held from November 18-21 at the Duke Energy Convention Center in Cincinnati, Ohio.

The poster presentation at CBD S&T will summarize the latest findings from the ongoing preclinical study of ATI-1701, which showed complete (100 per cent) protection 90 days after vaccination from a lethal exposure to the pathogen Francisca tularensis. This time period is the longest vaccine protection period tested to date in this model. Researchers will conduct an additional evaluation of vaccine efficacy up to 365 days in the same model in H1 2020. The U.S. Defense Threat Reduction Agency (DTRA), an arm of the U.S. Department of Defense (DOD), is funding this trial. MRI Global is managing the study under the DTRA contract HDTRA1-16-C-0028.

“Together with our partners at the DOD, MRIGlobal, and the National Research Council of Canada, we are greatly encouraged by results from the 90-day vaccine challenge study,” said Kevin Sullivan, CEO of Appili Therapeutics. “Although results are preliminary, they add to a growing body of evidence supporting advanced development of ATI-1701.  We look forward to sharing the 365-day challenge results next year, and working with our biodefense partners to potentially produce the first FDA-approved vaccine for the prevention of tularemia.”

For more information about the presentation, please visit:

About ATI-1701
Appili is developing ATI-1701 as a vaccine to combat Francisella tularensis, which the U.S. National Institutes of Health (NIH) defines as a Category A pathogen (an organism that poses the highest risk to national security and public health). As it is 1,000 times more infectious than anthrax, experts consider the aerosolized form to have a high potential use in a bioterrorist attack.[i]  Several countries may already have operational weapons programs leveraging this pathogen, making the need for a vaccine to counter this biological weapons threat exceedingly important.[ii]

About the Chemical and Biological Defense Science & Technology Conference (CBD S&T)
DTRA will host the 2019 CBD S&T Conference at the Duke Energy Convention Center, in Cincinnati, Ohio, November 18-21, 2019. The conference provides the opportunity to collaborate with more than 1,500 scientists, program managers and leaders from across the globe who are committed to making the world safer by confronting chemical and biological defense challenges. Attendees will also network with DTRA science and technology managers as well as other members of DTRA’s Chemical and Biological Defense team.

About MRIGlobal
Celebrating its 75th year of business, MRIGlobal addresses some of the world’s greatest threats and challenges. Founded in 1944 as an independent, non-profit organization, we perform contract research for government, industry, and academia. Our customized solutions in national security and defense and health include research and development capabilities in clinical research support, infectious disease and biological threat agent detection, global biological engagement, in vitro diagnostics, and laboratory management and operations. MRIGlobal is one of two partners in the Alliance for Sustainable Energy, LLC, which manages and operates the National Renewable Energy Laboratory (NREL) in Golden, Colo., for the U.S. Department of Energy. For more information, visit

About Appili Therapeutics
Appili Therapeutics, Inc. was founded to advance the global fight against infectious disease by matching clearly-defined patient needs with drug development programs that provide solutions to existing challenges patients, doctors, and society face in this challenging disease space. Appili has built pipeline of assets designed to address a broad range of significant unmet medical needs in the infectious disease landscape. This diverse pipeline aims to address some of the most urgent threats in global public health. Via an in-licensing program, Appili acquired the rights to ATI-1701, a vaccine for tularemia, being developed to mitigate the risks of a very serious biological weapons threat. ATI-1503 is a drug discovery program aimed at generating a novel class of antibiotics with broad-spectrum activity against Gram-negative superbugs. ATI-1501 employs Appili’s proprietary, taste-masked, oral-suspension technology with metronidazole for the growing number of patients with difficulty swallowing. Headquartered in Halifax, Nova Scotia, with offices in Mississauga, Ontario, Appili is pursuing worldwide opportunities in collaboration with science and industry commercial partners, governments and government agencies. For more information, visit

For more information, please contact:
Kimberly Stephens, CFO
Appili Therapeutics

Halifax, Nova Scotia, November 18, 2019