Genzyme and Isis Announce Strategic Alliance Including Exclusive Worldwide License of ...(unmet medical need. Genzyme's press r...)

Genzyme's press releases and other company information are available at http://www.genzyme.com and by calling Genzyme's investor information line at 1-800-905-4369 within the United States or 1-678-999-4572 outside the United States.

About Isis Pharmaceuticals, Inc.

Isis is exploiting its expertise in RNA to discover and develop novel drugs for its product pipeline and for its partners. The Company has successfully commercialized the world's first antisense drug and has 18 drugs in development. Isis' drug development programs are focused on treating cardiovascular and metabolic diseases. Isis' partners are developing drugs for a wide variety of diseases. Ibis Biosciences, Inc., Isis' wholly owned subsidiary, is developing and commercializing the Ibis T5000(TM) Biosensor System, a revolutionary system to identify infectious organisms. Isis is a joint owner of Regulus Therapeutics LLC, a joint venture focused on the discovery, development and commercialization of microRNA therapeutics. As an innovator in RNA-based drug discovery and development, Isis is the owner or exclusive licensee of over 1,500 issued patents worldwide. Additional information about Isis is available at http://www.isispharm.com.

Genzyme Safe Harbor Statement

This press release contains forward-looking statements, including the statements regarding anticipated approval under the Hart-Scott-Rodino Act and the anticipated completion of phase 3 development. These statements are subject to risks and uncertainties that could cause actual results to differ materially from those projected in these forward-looking statements. These risks and uncertainties include, among others, the ability of the parties to receive approval for the transaction under the Hart-Scott-Rodino Act, the ability of the parties to complete phase 3 development and the risks and
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