PARIS, France and THE WOODLANDS, TX, USA I March 22, 2019 I The U.S. Food and Drug Administration (FDA) issued a Complete Response Letter (CRL) regarding the New Drug Application for investigational Zynquista(TM) (sotagliflozin)*, a dual SGLT1 and SGLT2 inhibitor for the treatment of adults with type 1 diabetes in combination with insulin.

A CRL is a communication from the FDA that informs companies that an application cannot be approved in its present form

Sanofi and Lexicon will work closely with the FDA to determine the appropriate next steps

About Lexicon Pharmaceutical

Lexicon (NASDAQ: LXRX) is a fully integrated biopharmaceutical company that is applying a unique approach to gene science based on Nobel Prize-winning technology to discover and develop precise medicines for patients with serious, chronic conditions. Through its Genome5000(TM) program, Lexicon scientists have studied the role and function of nearly 5,000 genes over the last 20 years and have identified more than 100 protein targets with significant therapeutic potential in a range of diseases. Through the precise targeting of these proteins, Lexicon is pioneering the discovery and development of innovative medicines to safely and effectively treat disease. In addition to its first commercial product, XERMELO® (telotristat ethyl), Lexicon has a pipeline of promising drug candidates in clinical and pre-clinical development in diabetes and metabolism and neuropathic pain. For additional information please visit www.lexpharma.com.

*Sotagliflozin is an investigational drug and is under regulatory review by the European Medicines Agency (EMA) and U.S. Food and Drug Administration (FDA). The EMA and FDA have conditionally accepted Zynquista(TM) as the trade name for sotagliflozin.

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.

SOURCE: Sanofi