Genzyme Reports Strong First-Quar...(and Genzyme undertakes noobligation to u...)

Genzyme(R), Myozyme(R), Fabrazyme(R), Cerezyme(R), Thyrogen(R), Renagel(R), Renvela(R), Thymoglobulin(R), Synvisc(R), Campath(R) and Clolar(R) are registered trademarks of and Mozobil(TM) and Synvisc-ONE(TM) are unregistered trademarks of Genzyme or its subsidiaries. Aldurazyme(R) is a registered trademark of BioMarin/Genzyme LLC. All rights reserved.

About Genzyme

One of the world's leading biotechnology companies, Genzyme is dedicated to making a major positive impact on the lives of people with serious diseases. Since 1981, the company has grown from a small start-up to a diversified enterprise with more than 10,000 employees in locations spanning the globe and 2007 revenues of $3.8 billion. In 2007, Genzyme was chosen to receive the National Medal of Technology, the highest honor awarded by the President of the United States for technological innovation.

With many established products and services helping patients in nearly 90 countries, Genzyme is a leader in the effort to develop and apply the most advanced technologies in the life sciences. The company's products and services are focused on rare inherited disorders, kidney disease, orthopaedics, cancer, transplant, and diagnostic testing. Genzyme's commitment to innovation continues today with a substantial development program focused on these fields, as well as immune disease, cardiovascular disease, and other areas of unmet medical need.

Conference Call Information

Genzyme will host a conference call today at 11:00 a.m. Eastern to discuss results for the first quarter of 2008. To participate in the call, please dial 773-799-3828 and refer to pass code "Genzyme." A replay of this call will be available by dialing 402-998-1342. This call will also be Webcast live on the investor events section of http://www.genzyme.com. Replays of the call and th
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