Sanofi S.A.. (12/1/17). "Press Release: Sanofi Ends Development of Clostridium Difficile Vaccine". Paris.

	Organisation	Sanofi Pasteur (Group)
	Group	Sanofi (Group) [since May 2011]
	Product	C. difficile vaccine (Sanofi Pasteur)
	Product 2	clinical research

Following a planned interim analysis, the Independent Data Monitoring Committee (IDMC) for the phase III Cdiffense clinical trial program concluded that the probability that the study will meet its primary objective is low. Based on this, Sanofi has therefore decided to discontinue clinical development of its experimental Clostridium difficile vaccine, to focus on six key vaccine projects currently in development.

Cdiffense is a trial designed to test the efficacy and safety of a candidate toxoid vaccine in a subpopulation at risk of Clostridium difficile infection.

Sanofi Pasteur, the vaccines business of Sanofi responsible for the program, is informing all investigators, regulatory authorities and trial ethics committees. In addition, investigators are notifying study volunteers of the decision to stop the program. Data from all vaccinated volunteers in this trial will continue to be analyzed for more information and shared with the scientific community.

About Sanofi

Sanofi is dedicated to supporting people through their health challenges. We are a global biopharmaceutical company focused on human health. We prevent illness with vaccines, provide innovative treatments to fight pain and ease suffering. We stand by the few who suffer from rare diseases and the millions with long-term chronic conditions.

With more than 100,000 people in 100 countries, Sanofi is transforming scientific innovation into healthcare solutions around the globe.

Sanofi, Empowering Life

Record changed: 2023-06-05