CAMBRIDGE, Mass.--(BUSINESS WIRE)--

Genzyme, a Sanofi company (EURONEXT: SAN and NYSE: SNY), announced today the European Medicines Agency (EMA) has accepted the filing of the marketing authorization application (MAA) for once-daily oral teriflunomide for the treatment of relapsing forms of multiple sclerosis (MS). Acceptance of the MAA starts the EMA’s review process.

“The filing represents another important milestone for teriflunomide and brings us one step closer to offering a new treatment option to patients with relapsing MS,” said Bill Sibold, Senior Vice President, Head of Multiple Sclerosis, Genzyme. “As an oral therapy with a promising clinical profile, teriflunomide is extremely well positioned to provide an alternative therapeutic option to patients who are currently taking injectable therapies. Those injectable therapies make up approximately 80 percent of the MS market today.”

The purpose of the MAA is to secure approval to market and allow prescription of teriflunomide in the European Union based on data from two completed pivotal Phase III trials, TEMSO and TENERE. These trials represent two of five efficacy studies of teriflunomide in MS that are completed or underway, making the clinical program one of the largest and broadest of any MS therapy in development.

An application to market teriflunomide in the United States is under review by the U.S. Food & Drug Administration.

About Teriflunomide

Teriflunomide is an immunomodulatory, disease-modifying oral drug with anti-inflammatory properties, and is under investigation for the treatment of MS. Teriflunomide blocks the proliferation and functioning of activated T and B lymphocytes – which are thought to be especially damaging in MS – by selectively and reversibly inhibiting a mitochondrial enzyme. Slowly dividing or resting lymphocytes are generally unaffected by teriflunomide, suggesting that the immune system’s response to infection should not be compromised.

Teriflunomide is being studied in a large clinical program that is expected to include more than 5,000 trial participants in 36 countries. Five efficacy clinical trials are either completed or underway with teriflunomide, making the clinical program one of the largest and broadest of any MS agent under development. In addition to the TEMSO and TENERE trials, the Phase III, placebo-controlled trial TOWER is ongoing in people with relapsing forms of MS. Another Phase III study, TOPIC, is underway in early MS or CIS (clinically isolated syndrome). Teriflunomide is also being evaluated as an adjunct therapy to interferon-? in the Phase III TERACLES trial. With up to 10 years of continuous use in a Phase II extension, teriflunomide has the longest clinical experience of any investigational oral MS therapy.

About Genzyme, a Sanofi Company

Genzyme has pioneered the development and delivery of transformative therapies for patients affected by rare and debilitating diseases for over 30 years. We accomplish our goals through world-class research and with the compassion and commitment of our employees. With a focus on rare diseases and multiple sclerosis, we are dedicated to making a positive impact on the lives of the patients and families we serve. That goal guides and inspires us every day. Genzyme’s portfolio of transformative therapies, which are marketed in countries around the world, represents groundbreaking and life-saving advances in medicine. As a Sanofi company, Genzyme benefits from the reach and resources of one of the world’s largest pharmaceutical companies, with a shared commitment to improving the lives of patients. Learn more at http://www.genzyme.com.

About Sanofi

Sanofi, a global and diversified healthcare leader, discovers, develops and distributes therapeutic solutions focused on patients’ needs. Sanofi has core strengths in the field of healthcare with seven growth platforms: diabetes solutions, human vaccines, innovative drugs, rare diseases, consumer healthcare, emerging markets and animal health. Sanofi is listed in Paris (EURONEXT: SAN.PA - News) and in New York (NYSE: SNY - News).

Forward Looking Statements

This press release contains forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995, as amended. Forward-looking statements are statements that are not historical facts. These statements include projections and estimates and their underlying assumptions, statements regarding plans, objectives, intentions and expectations with respect to future financial results, events, operations, services, product development and potential, and statements regarding future performance. Forward-looking statements are generally identified by the words “expects”, “anticipates”, “believes”, “intends”, “estimates”, “plans” and similar expressions. Although Sanofi’s management believes that the expectations reflected in such forward-looking statements are reasonable, investors are cautioned that forward-looking information and statements are subject to various risks and uncertainties, many of which are difficult to predict and generally beyond the control of Sanofi, that could cause actual results and developments to differ materially from those expressed in, or implied or projected by, the forward looking information and statements. These risks and uncertainties include among other things, the uncertainties inherent in research and development, future clinical data and analysis, including post marketing, decisions by regulatory authorities, such as the FDA or the EMA, regarding whether and when to approve any drug, device or biological application that may be filed for any such product candidates as well as their decisions regarding labeling and other matters that could affect the availability or commercial potential of such products candidates, the absence of guarantee that the products candidates if approved will be commercially successful, the future approval and commercial success of therapeutic alternatives, the Group’s ability to benefit from external growth opportunities as well as those discussed or identified in the public filings with the SEC and the AMF made by Sanofi, including those listed under “Risk Factors” and “Cautionary Statement Regarding Forward-Looking Statements” in Sanofi’s annual report on Form 20-F for the year ended December 31, 2010. Other than as required by applicable law, Sanofi does not undertake any obligation to update or revise any forward-looking information or statements.

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Genzyme Announces EMA Accepts Oral Teriflunomide Marketing Application for Treatment of Multiple Sclerosis