SutroVax Receives CARB-X Award to Group A Streptococcus Infections Vaccine

SutroVax has received an award from CARB-X for up to $15 million in non-dilutive funding to develop a universal vaccine to prevent infections caused by Group A Strep bacteria, which include pharyngitis, impetigo, and necrotizing fasciitis. The award commits initial funding of up to $1.6 million and up to $15 million in total funding available upon achievement of development milestones.

"This funding will support our collaborative efforts to develop a safe, effective Group A Strep conjugate vaccine where none exist today to prevent a highly prevalent disease with widespread morbidity and mortality," said Jeff Fairman, Ph.D., Vice President Research and co-founder of SutroVax. Grant Pickering, CEO and co-founder of SutroVax, added, "Conjugate vaccines have been the most successful approach to providing protection against pathogenic bacteria, and we are pleased to leverage our technology platform to advance this vaccine with support from CARB-X."

"Vaccines are vital weapons in the global fight against drug-resistant bacteria. Vaccines prevent infections and reduce the need for antibiotics, thereby helping to curb the spread of drug-resistance and enhancing health security," said Kevin Outterson, Executive Director of CARB-X and Professor of Law at Boston University. "Thanks to vaccines, bacterial infections such as tetanus, diptheria and whooping cough can now be prevented. The SutroVax project is in the early stages of development but if successful and approved for use in patients, it could potentially save thousands of lives."

SutroVax's Group A Strep vaccine is based on a discovery at the University of California, San Diego, that led to the development of a conserved cell wall polysaccharide antigen with the potential to provide broad protection against strains of the bacteria, while avoiding cross-reactive antibodies that could target human tissue. SutroVax exclusively licensed the rights to this patented antigen and is developing the Group A Strep vaccine, by utilizing its proprietary conjugation technology, which permits site-specific conjugation of polysaccharide antigens to immunogenic proteins and preservation of critical B-cell and T-cell epitopes on the carrier protein, resulting in improved conjugate vaccines. Conjugate vaccines have led to multiple highly effective vaccines to prevent disease caused by pneumococcus, meningococcus, and Haemophilus influenzae B bacteria and represent the largest segment of the global vaccines market.

Group A Streptococcus is a serious human pathogen causing an estimated 600 million cases of pharyngitis annually worldwide and increasing cases of severe invasive infections, including sepsis, necrotizing fasciitis, and toxic shock syndrome. Pharyngitis is highly prevalent in school-age children and a significant driver of antibiotic prescriptions worldwide. The growing use of antibiotics contributes to antibiotic resistance, which can threaten the ability to prevent the spread of infections and lead to higher medical costs, prolonged hospital stays, and increased mortality. In the United States, the Centers for Disease Control and Prevention (CDC) estimates that 23,000 people die each year from drug-resistant bacterial infections. In Europe, the European Centre for Disease Prevention and Control (ECDC) estimates that there are 33,000 deaths annually from the rise of drug-resistant bacteria. Group A Strep is also responsible for post-infectious immune-mediated rheumatic heart disease (RHD), a leading cause of mortality in the developing world. An estimated 30 million people are currently affected by RHD, with over 500,000 deaths annually (60% under the age of 70) and over 11 million disability-adjusted life years lost. Despite high global demand, there is currently no commercially available vaccine against Group A Strep.

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