CAMBRIDGE, Mass.--(BUSINESS WIRE)--Genzyme Corporation (NASDAQ: GENZ) today provided an update on its progress to restore supplies of Cerezyme® (imiglucerase for injection) and Fabrazyme® (agalsidase beta) for patients worldwide and revised its 2009 revenue guidance for these products. The company is now approximately half-way through the anticipated shortage period for Cerezyme and Fabrazyme, the restart of the Allston Landing manufacturing facility is complete, and if production continues to proceed as planned, Genzyme expects that it can begin meeting anticipated patient demand for both products during the first quarter of 2010.