Genzyme Reports Financial Results for Fourth Quarter of 2006 and Full Year

Company Provides Confident Outlook for 2007

February 14, 2007 - Genzyme Corporation (Nasdaq: GENZ) today announced fourth-quarter and full-year financial results for 2006. The company also offered a confident outlook for the coming year, during which it expects to generate strong revenue and earnings growth, expand the availability of its products in existing and new markets, report data from approximately ten pivotal studies, and continue to make significant investments in research and manufacturing.

“Last year was a productive year in which we delivered strong results and set the stage for continued future growth,” said Henri A. Termeer, chairman and chief executive officer of Genzyme Corp. “We sustained a non-GAAP earnings growth rate of approximately 20 percent, launched a very exciting new product in Myozyme®, and advanced many promising late-stage development programs that will become highly visible during the course of this year. Our cash flow remained particularly strong. This allowed us to absorb an acquisition that brought us an important new product candidate in Mozobil™, and to continue making substantial investments in manufacturing facilities, while still increasing our cash position.”

Fourth-quarter revenue increased 17 percent to a record $854.2 million, up from $728.7 million in the same period a year earlier. For the year, revenue grew 17 percent to $3.2 billion from $2.7 billion in the previous year. Genzyme’s top line has increased at a compound annual rate of 27 percent since 2000, highlighting both the strength and the sustainability of the company’s growth. This year, Genzyme expects revenue to increase to $3.6-$3.8 billion.

In the fourth quarter, Genzyme recorded a charge related to its November 2006 acquisition of AnorMED Inc. This charge led to a GAAP net loss of $268.2 million, or $1.02 per diluted share, compared to net income of $106.6 million, or $0.39 per diluted share, in the same quarter a year ago. On a non-GAAP basis, Genzyme’s fourth-quarter net income grew 29 percent to $209.0 million, compared with $162.7 million in the fourth quarter last year. Non-GAAP earnings per diluted share grew 28 percent to $0.77, compared with $0.60 in last year’s fourth quarter.

GAAP figures for the quarter include the following pre-tax items: (1) a charge of $552.9 million to write off in-process research and development acquired from AnorMED; (2) an amortization expense of $53.2 million; (3) a stock-compensation expense of $48.4 million; and (4) a charge of $7.9 million for the settlement of a case before the Competition Appeal Tribunal relating to Genzyme’s homecare business in the United Kingdom.

For the year, Genzyme reported a GAAP net loss of $16.8 million, or $0.06 per diluted share, reflecting the AnorMED charge. This compares with 2005 net income of $441.5 million, or $1.65 per diluted share. On a non-GAAP basis, net income increased 23 percent to $742.7 million, compared with $603.2 million in 2005. Non-GAAP earnings increased 21 percent to $2.77 per diluted share, compared with $2.28 per diluted share in 2005.

For 2007, Genzyme anticipates GAAP earnings of $1.90-$2.00 per diluted share. Last month, the company provided non-GAAP EPS guidance of $3.10-$3.20 per diluted share excluding the impact of the AnorMED acquisition. Genzyme is raising this guidance by $0.10 to $3.20-$3.30 per diluted share based on the strength of the fourth quarter.

Genzyme expects the impact of the AnorMED transaction, including increased operating expenses and decreased interest income, to reduce earnings by $0.15 per diluted share. Therefore, the company’s revised 2007 non-GAAP earnings guidance is $3.05-$3.15 per diluted share. This estimate excludes an anticipated amortization expense of $0.49 per diluted share, an anticipated stock-compensation expense of $0.58 per diluted share, and the expected $0.08 per diluted share impact of contingent convertible debt.

For the first quarter of 2007, Genzyme expects non-GAAP earnings per diluted share in the low $0.70s.

Product Sales

Genzyme today also provided 2007 revenue guidance for its major products and businesses:


Sales of Myozyme® (alglucosidase alfa) are expected to increase to $155-$180 million this year. The product was launched in Europe and the United States during the second quarter of 2006, and sales last year were $59 million. Myozyme is the first treatment ever developed for Pompe disease, a progressive, debilitating and often fatal neuromuscular disorder. The product has been rapidly adopted by physicians and consistently supported by reimbursement authorities, and Genzyme is optimistic about the product’s long-term growth potential. This year, the company expects to launch Myozyme in Japan, Brazil and a number of additional markets.


Sales of Fabrazyme® (agalsidase beta) are expected to reach $415-$425 million this year, compared with $359 million in 2006. Fabrazyme’s growth is being driven by the number of patients beginning treatment and by clinical studies that distinguish the product in the market. Results from the Phase 4 trial of Fabrazyme were published in December in Annals of Internal Medicine. The trial showed that Fabrazyme reduced the risk of major clinical events that cause death and disability in Fabry disease. It is the only major outcomes study to be conducted involving Fabry patients.


Sales of Cerezyme® (imiglucerase for injection) are expected to reach $1.060-$1.075 billion this year, compared with $1.0 billion in 2006. A research study published in the January issue of the Journal of Bone and Mineral Research demonstrated that long-term use of Cerezyme significantly improved bone mineral density in patients with Type 1 Gaucher disease. Cerezyme is the standard of care for patients with Type 1 Gaucher disease. Patients with Gaucher disease are at increased risk for developing bone complications.


Sales of Renagel® (sevelamer hydrochloride), a phosphate binder for patients with end-stage renal disease on hemodialysis, are expected to reach $580-$590 million this year, compared with $515 million in 2006. The product’s growth is being driven by a number of factors, including the communication of data highlighting the clinical and economic benefits of the product. Results from the RIND study published last month in Kidney International showed that patients using Renagel experienced a significantly lower rate of death compared with patients using calcium-based phosphate binders. At the American Society of Nephrology meeting in November, investigators presented three-year hospitalization and health economic data from the DCOR study showing that patients using Renagel experienced lower rates of hospitalization, fewer days in the hospital, and reduced overall health care expenditures compared to patients treated with calcium-based phosphate binders.


Sales of Synvisc® (hylan G-F 20) are expected to reach $250-$265 million this year, compared with $234 million in 2006. Synvisc is a market-leading viscosupplement used to treat pain associated with osteoarthritis of the knee. The product’s near-term growth will be driven by its clinical advantages over competing products and by the expanding global market for viscosupplementation products.


Total revenue for the Diagnostics/Genetics business is expected to reach $385-$405 million this year, compared with $356 million in 2006.

Gross Margin

Genzyme’s non-GAAP gross margin is expected to be approximately 77-78 percent of revenue this year, consistent with the gross margin for 2006.

Expenses

Non-GAAP selling, general and administrative expenses are expected to be $1.020-$1.040 billion this year and remain relatively consistent as a percentage of revenue with SG&A expenses in 2006. SG&A spending reflects the full-year impact of the introduction of Myozyme in Europe and the United States and the expected launch of the product in additional major markets; the planned expansion of sales and marketing support for Synvisc; and the continued growth of Genzyme’s international commercial infrastructure.

Non-GAAP research and development spending is expected to increase to approximately $640-$650 million this year, compared with $565 million in 2006. Genzyme is conducting more late-stage trials now than at any point in its history. Over the next year and a half, Genzyme expects to initiate, conduct or complete 20 pivotal trials for new products or new indications, which will expand and further diversify the company’s portfolio and contribute to its long-term growth.

Tax Rate

Genzyme’s non-GAAP net tax rate this year is expected to be approximately 32 percent. The GAAP tax rate is expected to be 31 percent.

Capital Expenditures

Capital expenditures are expected to total approximately $325-$375 million this year. Genzyme continues to make a significant investment in manufacturing capacity to support the growth of existing products and to prepare for the launch of products in late-stage development. The company is also completing the construction of two new laboratory buildings to expand its research and development capacity.

Pipeline Outlook

Genzyme expects to make significant progress this year within its late-stage clinical pipeline:

Genetic Diseases


Results from the ongoing post-marketing study of Myozyme involving patients with late-onset Pompe disease are expected later this year and will be submitted to regulatory authorities in 2008. The 90-patient trial is intended to provide further support for Myozyme’s use.


Enrollment is continuing in an international, multi-center phase 2 clinical trial evaluating the safety and efficacy of the small molecule GENZ-112638 for the treatment of Gaucher disease. The trial will help determine the potential of this compound as an alternative or adjunct to enzyme replacement therapy.


Enrollment has begun in a Phase 1 clinical trial of a potential enzyme replacement therapy for the treatment of ASM-deficient Niemann Pick disease.

Kidney Disease


Genzyme has submitted a New Drug Application to the FDA for sevelamer carbonate tablets—a next-generation version of Renagel. Genzyme expects to launch the product commercially in 2008 under the trade name Renvela™. Following the anticipated approval of Renvela for the control of serum phosphorus in patients with chronic kidney disease on dialysis, Genzyme plans to submit a supplemental NDA seeking marketing approval for the product’s use in treating hyperphosphatemic patients with chronic kidney disease who are not on dialysis. The company also intends to seek approval for a powder form of Renvela to be taken once per day, which may provide patients with a more convenient formulation and dosing schedule that could help improve compliance.

Orthopaedics


Genzyme plans in the first half of this year to request an amendment to the Synvisc product label in the United States and Europe to include a single-injection regimen. This change has the potential to significantly expand the market for the product. In December, Genzyme reported preliminary results from a study showing that patients who received Synvisc through a single-injection regimen achieved a statistically significant improvement in pain from osteoarthritis of the knee over 26 weeks compared with those using placebo. Currently Synvisc is delivered through three injections given at one-week intervals.


Results from the pivotal trial of Hylastan™, a next-generation viscosupplement, are expected this year, and Genzyme anticipates filing for U.S. and European approval of the product later this year. Hylastan is also designed to be administered using a single-injection regimen.

Immune and Infectious Diseases


Results from the phase 3 trial of tolevamer are expected to be available during the second half of this year. Pending a positive outcome, the first commercial approval is anticipated in 2008. Tolevamer is a novel polymer therapy that could be the first non-antibiotic treatment for Clostridium difficile-associated disease, a widespread and growing global problem primarily affecting patients in hospitals and nursing homes. The prevalence and impact of Clostridium difficile are becoming increasingly more visible as public health officials and others look for new ways to manage this disease.


Genzyme expects to initiate two phase 3 studies of alemtuzumab (Campath) for the treatment of relapsing-remitting multiple sclerosis in 2007, the first in previously untreated patients and the second in patients who have progressed on other therapies. The company is currently developing protocols for each of these studies to submit to the FDA for review and expects to initiate the study in previously untreated patients during the first half of this year.

Transplant


Results from two pivotal clinical trials of Mozobil (plerixafor) are expected mid-year. The first study involves patients with multiple myeloma, and the second involves patients with non-Hodgkin’s lymphoma. Mozobil is an experimental product in late-stage clinical development that is designed to improve the outcome of stem cell transplantation in patients with blood cancers. Genzyme obtained this promising new product candidate through its acquisition of AnorMED.

Cancer


Genzyme is working to broaden the indications for its drugs Campath® (alemtuzumab) and Clolar® (clofarabine injection) to benefit larger patient populations. Genzyme and partner Bayer Schering Pharma AG expect to submit U.S. and European applications this year to expand Campath’s current label to include first-line treatment of B-cell chronic lymphocytic leukemia. Data from the CAM 307 trial presented at the annual American Society of Hematology meeting demonstrated that Campath significantly improved progression-free survival in comparison to chlorambucil in previously untreated B-CLL patients, with Campath reducing the risk of disease progression or death by 42 percent. Campath received accelerated U.S. approval in 2001, and CAM307 was the primary post-approval commitment study designed to support full approval. Campath is currently indicated for the treatment of B-CLL in patients who have been treated with alkylating agents and who have failed fludarabine therapy.


Genzyme is seeking to expand Clolar’s indication to include adult patients with acute myelogenous leukemia (AML). The product is currently indicated for the treatment of pediatric patients with relapsed or refractory acute lymphoblastic leukemia after at least two prior regimens. In November, Genzyme began a trial examining the safety and effectiveness of Clolar in previously untreated, older adult patients with AML who are unlikely to benefit from standard induction therapy. This was the second pivotal clinical study of clofarabine in adult patients with AML to begin last year, and it is expected to provide substantial support for expanding the current product label, which Genzyme intends to pursue next year.

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 9,000 employees in locations spanning the globe and 2006 revenues of $3.2 billion. Genzyme has been selected by FORTUNE as one of the “100 Best Companies to Work for” in the United States.

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 immune diseases, and diagnostic testing. Genzyme’s commitment to innovation continues today with a substantial development program focused on these fields, as well as heart disease and other areas of unmet medical need.

This press release contains forward-looking statements, including: estimates for earnings, revenues, gross margin, expenses, tax rate and capital expenditure levels for 2007; anticipated progress of clinical trials and regulatory filing and action estimates, including for tolevamer, alemtuzumab-MS, GENZ-112638, sevelamer carbonate, hylastan, Clolar in adult AML, CAM-307, and Mozobil in multiple myeloma and non-Hodgkin’s lymphoma; expected drivers of Genzyme’s future growth, as well as the growth drivers for certain products, including Synvisc, Renagel, Fabrazyme and Myozyme; expectations regarding launches of Myozyme in new territories; plans to seek a Synvisc label change and the timing thereof; an estimate of the number of clinical trials Genzyme plans to initiate, conduct or complete in 2007; and other statements regarding Genzyme’s future performance and strategy. These statements are subject to risks and uncertainties that could cause actual results to differ materially from those forecast in these forward-looking statements. These risks and uncertainties include, among others, Genzyme’s ability to successfully complete preclinical and clinical development of its products and services, Genzyme’s ability to expand the use of current products in existing and new indications; Genzyme’s ability to maintain and obtain regulatory approvals for products and services, and the timing of receipt of such approvals; Genzyme’s ability to maintain and enforce intellectual property rights; Genzyme’s ability to successfully identify and market to new patients; the scope of third-party reimbursement coverage for Genzyme’s products and services; Genzyme’s ability to manufacture products and product candidates in a timely and cost effective manner; and the risks and uncertainties described in Genzyme’s SEC reports filed under the Securities Exchange Act of 1934, including the factors discussed under the caption “Factors Affecting Future Operating Results” in Genzyme’s Quarterly Report on Form 10-Q for the period ended September 30, 2006. Genzyme cautions investors not to place substantial reliance on the forward-looking statements contained in this press release. These statements speak only as of February 14, 2007 and Genzyme undertakes no obligation to update or revise the statements.

This press release includes certain non-GAAP financial measures that involve adjustments to GAAP figures. Genzyme believes that these non-GAAP financial measures, when considered together with the GAAP figures, can enhance an overall understanding of Genzyme’s past financial performance and its prospects for the future. The non-GAAP financial measures are included with the intent of providing both management and investors with a more complete understanding of underlying operational results and trends. In addition, these non-GAAP financial measures are among the primary indicators Genzyme management uses for planning and forecasting purposes and measuring the company’s performance. These non-GAAP financial measures are not intended to be considered in isolation or as a substitute for GAAP figures. A reconciliation of the non-GAAP to GAAP figures follows this press release.

Genzyme®, Myozyme®, Fabrazyme®, Cerezyme®, Renagel®, Synvisc®, Campath® and Clolar® are registered trademarks and Mozobil™, Renvela™, Hylastan™ are trademarks of Genzyme Corporation or its subsidiaries. All rights reserved.

Conference Call Information

Genzyme Corporation will host a conference call today at 11:00 a.m. Eastern Time to discuss fourth-quarter and full-year 2006 financial results and financial guidance for 2007. If you would like to participate in the call, please dial 706-679-8722. This call will also be Webcast on the investor events section of www.genzyme.com. A replay of the Webcast and call will be available from 2:15 p.m. Eastern through midnight on February 28, 2007. For the replay, please dial 706-645-9291 and refer to reservation number 4245727.

Upcoming Events

Genzyme Corporation will host a conference call April 25 at 11:00 a.m. Eastern Time to discuss first-quarter financial results. 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 402-220-4870. This call will also be Webcast live on the investor events section of www.genzyme.com. Replays of the call and the Webcast will be available until midnight on May 2, 2007.

Contact Information

Bo Piela

Media Contact

Genzyme Corporation

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