Private company

Genzyme

Logo: Unknown author Unknown author, Public domain, via Wikimedia Commons4

Biotechnology company

Genzyme (also known as Genzyme Transgenics Corp or GTC Biotherapeutics) was an American biotechnology company based in Cambridge, Massachusetts. From its acquisition in 2011 to 2022 Genzyme operated as a fully owned subsidiary of Sanofi. In 2010, Genzyme was the world's third-largest biotechnology company, employing more than 11,000 people around the world.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

1981Founded1
  • Industrypharmaceutical industry1
  • HeadquartersCambridge1
  • Founded inBoston1
  • Websitewww.genzyme.com
  • Legal formpublic limited company1
  • LEI549300ZNNO34O8GXUE473
  • StatusActive3
  • LEI statusLapsed (not renewed)3
  • Registered addressC/O Corporation Service Company, 02109 Boston, United States3
  • Registered withCorporations Division (Secretary of the Commonwealth's Office), 0610471633
Genzyme building
Photo: Tim Pierce, Public domain, via Wikimedia Commons6

Genzyme (also known as Genzyme Transgenics Corp or GTC Biotherapeutics) was an American biotechnology company based in Cambridge, Massachusetts. From its acquisition in 2011 to 2022 Genzyme operated as a fully owned subsidiary of Sanofi. In 2010, Genzyme was the world's third-largest biotechnology company, employing more than 11,000 people around the world. As a subsidiary of Sanofi, Genzyme had a presence in approximately 65 countries, including 17 manufacturing facilities and 9 genetic-testing laboratories. Its products were also sold in 90 countries. In 2007, Genzyme generated $3.8 billion in revenue with more than 25 products on the market. In 2006 and 2007, Genzyme was named one of Fortune magazine’s “100 Best Companies to Work for”. The company donated $83 million worth of products worldwide; in 2006, it made $11 million in cash donations. In 2005, Genzyme was awarded the National Medal of Technology, the highest level of honor awarded by the president of the United States to America's leading innovators. In February 2022, Sanofi's new corporate brand was unveiled and former entity "Sanofi Genzyme" was integrated into Sanofi.2

Corporate structure

Genzyme is part of a group headed by Sanofi. 124 entities, 30 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Sanofi Paris, France
    • Genzyme 100% · Cambridge, Massachusetts, United States
      • GENZYME THERAPEUTIC PRODUCTS LIMITED PARTNERSHIP Subsidiary · Boston, Massachusetts, United States
    • Hoechst 100% · Frankfurt am Main, Germany
    • Ablynx Ghent, Belgium
    • Sanofi (Belgium) Machelen, Belgium
    • Chattem Subsidiary · 100% · Chattanooga
    • Sanofi-Aventis Korea Subsidiary · 100% · Seoul, South Korea
    • Shantha Biotechnics Subsidiary · 98.7% · Medchal
    • Bioverativ Subsidiary · Waltham
    • Sanofi (Japan) Subsidiary · Tokyo, Japan
    • Sanofi Medley Subsidiary · Campinas, Brazil
    • Winthrop Subsidiary · United Kingdom
    • Zentiva Subsidiary · Praha 10, Czechia
    • Infraserv Höchst Stake · 31.2% · Frankfurt am Main, Germany
    • Regeneron Pharmaceuticals Stake · 22.2% · Tarrytown, New York, United States
      • Checkmate Pharmaceuticals, Inc. Subsidiary · Delaware, United States
      • Decibel Therapeutics, Inc. Subsidiary · Delaware, United States
      • Eastside Campus Holdings LLC Subsidiary · New York, United States
      • Loop Road Holdings LLC Subsidiary · New York, United States
      • Old Saw Mill Holdings LLC Subsidiary · New York, United States
      • Oxular Acquisitions Limited Subsidiary · United Kingdom
      • Oxular Inc. Subsidiary · Delaware, United States
      • Regeneron Assurance, Inc. Subsidiary · New York, United States
      • Regeneron Austria GmbH Subsidiary · Austria
      • Regeneron Belgium SRL Subsidiary · Belgium
      • Regeneron Canada Company Subsidiary · Canada
      • Regeneron Clinical Genomics Laboratory LLC Subsidiary · Delaware, United States
      • Regeneron France SAS Subsidiary · France
      • Regeneron Genetics Center LLC Subsidiary · Delaware, United States
      • Regeneron GmbH Subsidiary · Germany
      • Regeneron Healthcare Solutions, Inc. Subsidiary · New York, United States
      • Regeneron India Private Limited Subsidiary · India
      • Regeneron International Holdings LLC Subsidiary · Delaware, United States
      • REGENERON IRELAND DESIGNATED ACTIVITY COMPANY Subsidiary · Dublin, Ireland
      • Regeneron Italy S.r.l. Subsidiary · Italy
      • Regeneron Japan KK Subsidiary · Japan
      • Regeneron NL B.V. Subsidiary · Netherlands
      • Regeneron Spain, S.L.U. Subsidiary · Spain
      • Regeneron Switzerland GmbH Subsidiary · Switzerland
      • Regeneron UK Limited Subsidiary · United Kingdom
      • and 4 more
    • SANOFI AVENTIS SA Subsidiary · 100% · Barcelona, Spain
    • SANOFI PASTEUR SA DE CV Subsidiary · 100% · Mexico City, Mexico
    • AZTECA VACUNAS SA DE CV Subsidiary · Mexico City, Mexico
    • Carraig Insurance Designated Activity Company Subsidiary · Dublin, Ireland
    • CHINOIN GYÓGYSZER-ÉS VEGYÉSZETI TERMÉKEK GYÁRA ZÁRTKÖRŰEN MŰKÖDŐ RT. Subsidiary · Budapest, Hungary
      • SANOFI-AVENTIS MAGYARORSZÁG KERESKEDELMI ÉS SZOLGÁLTATÓ ZÁRTKÖRŰEN MŰKÖDŐ RÉSZVÉNYTÁRSASÁG Subsidiary · Budapest, Hungary
    • GENZYME FLANDERS Subsidiary · Geel, Belgium
    • Genzyme Global S.a r.l. (Genzyme Global S.à r.l.) Subsidiary · Baar, Switzerland
    • HELVEPHARM AG Subsidiary · Vernier, Switzerland
    • Life Science Holdings Inc. Subsidiary · Swiftwater, Pennsylvania, United States
    • Nattermann Verwaltungs GmbH Subsidiary · Frankfurt am Main, Germany
    • Opella Subsidiary · France
    • and 39 more

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

The story

1980s: Early history

The company was started by Sheridan Snyder and George M. Whitesides in 1981. Genzyme's scientific founder was Henry Blair who had a contract with the National Institutes of Health (NIH) to produce modified enzymes for the NIH to test in clinical trials. Blair was a technician at the New England Enzyme Center at Tufts Medical School. Genzyme's first office was an old clothing warehouse adjacent to Tufts Medical School. In 1981, with the help of venture capital funding, the company made its first acquisition; Whatman Biochemicals Ltd. In 1982, it made its second acquisition, British-based Koch-Light Laboratories, later becoming Genzyme Pharmaceutical and Fine Chemicals.

Henri Termeer joined Genzyme as its president in 1983 and worked to redirect the company, which by this time had reached a valuation of $100 million, from its focus on diagnostic enzymes to modified enzymes for use as human therapeutics.

In 1984, Robin Berman, MD, who volunteered at the NIH, had a three-year-old son Brian, who had Gaucher's disease. He was scheduled for a spleen removal but his mother pleaded with Roscoe Brady, MD, an expert in Gaucher's disease, to include Brian in the clinical trial of Ceredase along with the other seven patients who were all adults. This trial ultimately failed due to use of too low a dose of the enzyme, but Ceredase went on to "become the company's most important product line", receiving FDA approval in 1991

In 1985, Termeer became the company's Chief executive officer (CEO) and in 1986, he took the company public.

In 1989, Termeer acquired Integrated Genetics, strengthening the company's presence in molecular biology, protein chemistry, carbohydrate engineering, nucleic acid chemistry, and enzymology.

1990s: Product launches and further expansion

Following the approval and success of Ceredase in 1991, Genzyme became devoted to finding drugs, involving recombinant human enzymes that would treat enzyme deficiency conditions that were essential to human survival and which usually afflict a very small percentage of the world's population. Drugs used to treat such conditions are considered to be orphan drugs. Ceredase was the first effective treatment for Gaucher's disease, a previously rare, untreatable and potentially fatal genetic disorder. At the time, Ceredase also drew criticism for being the most expensive drug ever sold, on average $150,000 per patient a year. In 1991, Genzyme also took IG laboratories, acquired in 1989, public raising $14 million on IPO. Genzyme's also sold off its interest in GENE-TRAK systems for $10 million and acquired Genecore International's diagnostic enzyme division.

In 1992, Genzyme acquired Medix Biotech, Inc., a producer and supplier of monoclonal and polyclonal antibodies, immunoassay components, and immunodiagnostic services. In the same year, Genzyme Limited, acquired Enzymatix Ltd and genetics testing laboratory Vivigen.

In 1993, the company acquired German distributor of invitro diagnostic kits, Virotech and immunobiological products manufacturer Omni Res srl.

Read the full text

In 1994, Genzyme received FDA approval to market Cerezyme, a genetically engineered replacement for Ceredase. The company acquired Sygena Ltd, BioSurface Technology Inc. and TSI Inc.. TSI was acquired by Genzyme Transgenics Corp. which was 73 percent owned by Genzyme.

In 1997, the company acquired PharmaGenics, Inc. creating Genzyme Molecular Oncology.

In 1999, Genzyme Surgical Products is established within the wider Group.

2000s: diversification

In 2000, the company announced its plan to acquire Biomatrix, Inc.

In August 2003, the company acquired SangStat Medical Corp. and its principal anti-organ rejection drug named Thymoglobulin for $600 million.

In 2004, the company acquired Ilex Oncology Inc. Genzyme acquired several of Impath's laboratories and cancer-testing technologies in May 2004, after Impath sought Chapter 11 bankruptcy protection.

In 2005, the company acquired Bone Care International Inc for $600 million.

In 2006, the company acquired AnorMED Inc. for $580 million

In 2007, the company agreed to acquire Bioenvision for $345 million, motivated by the potential of the leukemia treatment clofarabine.

In 2010, the year before the company's acquisition by Sanofi-Aventis, Genzyme had more than $400 million on net income on revenue of $4 billion and was the fourth-largest American biopharmaceutical company. By this time, enzyme therapies accounted for about 40% of revenues, a portfolio managed by the "Personalized Genetic Health" unit, the largest of five operating units. In the same year the company sold Genzyme Genetics for $925 million to LabCorp.

In 2011, Sanofi acquired the company for $20.1 billion.

Acquisition history

The following is an illustration of the company's major mergers and acquisitions and historical predecessors (this is not a comprehensive list):

From Wikipedia’s article on Genzyme, shared under CC BY-SA 4.0.5

Products and brands

  • imiglucerase

Listed on Wikidata.1

Genzyme focuses on six areas of medicine relating to lysosomal storage diseases, renal disease, orthopedics, transplant and immune diseases, oncology, genetics, and diagnostics. The first orphan drug for Genzyme that the FDA approved was Ceredase, a drug for treating Gaucher disease. Ceredase was eventually replaced by Cerezyme, which, for $200,000 per patient annually for life, currently accounts for approximately 30% of Genzyme's revenue. Other important drugs made by Genzyme are Renagel, used in the treatment of dialysis patients, and Fabrazyme, used to treat patients with Fabry's disease. Other products in development are Tolevamer for Clostridioides difficile infection and Campath for Chronic lymphocytic leukemia.

Genzyme had a sub-license from Bioenvision to market clofarabine in North America. On May 29, 2007, Genzyme made a tender offer to purchase Bioenvision for $5.60 per share. On October 27, 2007, most shareholders voted to approve Genzyme's acquisition. In 2007, CEO, President, and Board Chairman Henri Termeer, earned a salary of $2.5 million, and non-cash compensation worth $129 million.

In 2010, Genzyme launched a kidney medication for the Irish market from its Waterford base which it had set up nine years previously.

Manufacturing Sites: Allston MA USA; Geel Belgium; Framingham, MA, USA; Haverhill, Suffolk UK; Waterford, Munster Ireland;

From Wikipedia’s article on Genzyme, shared under CC BY-SA 4.0.5

Subsidiaries and ownership

Parent company

Owners

From Wikidata.1

Acquisitions

On August 30, 2010, Sanofi announced a bid to acquire Genzyme for $18.5 billion. The deal was later rejected by the board of Genzyme. On February 16, 2011, Sanofi declared the full acquisition of Genzyme for $20.1 billion.

From Wikipedia’s article on Genzyme, shared under CC BY-SA 4.0.5

Timeline

  1. Feb 2022Dissolved Dissolved1
  2. 2011Acquired Acquired by Sanofi1
  3. 1981Founded Founded in Boston1

Sources

The numbers on this page point here. Each one links to the record it came from.

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