Viropharma Extends Enterprise Contract with Medidata Solutions

FOR IMMEDIATE RELEASE

Multi-year Agreement Allows Integration of
Medidata Rave in Worldwide Clinical Trials

NEW YORK, N.Y. – March 17, 2011 – Medidata Solutions (NASDAQ: MDSO), a leading global provider of SaaS-based clinical development solutions, today announced that Exton, Pa.-based ViroPharma Incorporated has extended its agreement to use the Medidata Rave® electronic data capture (EDC) and clinical data management (CDM) platform for another multi-year period, building on the success of the relationship in the initial contract.

ViroPharma is a biopharmaceutical company dedicated to the development and commercialization of products that address serious diseases treated by physician specialists and in hospital settings. ViroPharma currently focuses its drug development activities in diseases including hereditary angioedema (HAE), also known as C1 inhibitor deficiency and C. difficile. ViroPharma selected Rave initially in 2003 as an enterprise-wide EDC system based on its ability to handle large, complex, global studies and its collaboration-enabling data collection, management and reporting capabilities. Since then, ViroPharma has used Medidata Rave in all Phase I–IV clinical studies, covering a broad range of patients, countries and sites.

About ViroPharma
ViroPharma Incorporated is a biopharmaceutical company dedicated to the development and commercialization of products that address serious diseases treated by physician specialists and in hospital settings. ViroPharma commercializes Vancocin®, approved for oral administration for treatment of antibiotic-associated pseudomembranous colitis caused by Clostridium difficile and enterocolitis caused by Staphylococcus aureus, including methicillin-resistant strains. ViroPharma commercializes Cinryze™ (C1 esterase inhibitor [human]) for routine prophylaxis against angioedema attacks in adolescent and adult patients with hereditary angioedema (HAE), also known as C1 inhibitor deficiency (for prescribing information on ViroPharma's commercial products, please download the package inserts at http://www.viropharma.com/Products.aspx). ViroPharma currently focuses its drug development activities in diseases including C1 esterase inhibitor deficiency and C. difficile.

About Medidata Solutions Worldwide
Medidata Solutions (www.mdsol.com) is a leading global provider of SaaS-based clinical development solutions that enhance the efficiency of customers’ clinical trials. For over 10 years, Medidata has consistently brought next-generation innovation to the life science industry to lower the total cost of clinical development through informed trial planning and management, optimized clinical processes and platform interoperability. Medidata’s advanced solutions address key functions throughout the clinical development process including protocol development (Medidata Designer®), trial planning and management (Medidata Grants Manager®, Medidata CRO Contractor®), user and learning management (iMedidata™), randomization and trial supply management (Medidata Balance™), monitoring (Medidata Rave Monitor, Medidata Rave Targeted SDV), Serious Adverse Events capture (Medidata Rave Safety Gateway) and clinical data capture, management and reporting (Medidata Rave®). Our diverse customer base spans biopharmaceutical companies, medical device and diagnostic companies, academic and government institutions, CROs and other research organizations, and includes more than 20 of the top 25 global pharmaceutical companies as well as organizations of all sizes developing life-enhancing medical treatments and diagnostics.

Contact:
Susan McCarron
Lois Paul & Partners
781.782.5767
Susan_McCarron@lpp.com