Biotech Manufacturing Under Scrutiny - Trouble at Genzyme and with flu vaccine production illustrates the challenges in producing safe and potent biologics. - BioPharm International

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Biotech Manufacturing Under Scrutiny
Trouble at Genzyme and with flu vaccine production illustrates the challenges in producing safe and potent biologics.


BioPharm International
Volume 23, Issue 2


Jill Wechsler
Last year was a difficult one in the biotech-manufacturing arena. The H1N1 vaccine shortage in October and November brought home the perils of influenza vaccine development and production, especially when working with new viral strains each year. A leading biotech manufacturer suffered major losses caused by serious problems on the production and compliance front. Despite several decades of experience in monitoring bioreactors and refining cell culture operations, the production of safe, pure, and potent biologics remains a tricky business.

DEBACLE AT GENZYME

The troubles at Genzyme began two years ago when it sought to scale up production of its new treatment for Pompe disease, Myozyme (alglucosidase), at its flagship Allston Landing facility in Massachusetts. With six large bioreactors, that plant produces Genzyme's lead product, Gaucher disease treatment Cerezyme (imiglucerase), along with Fabrazyme (agalsidase) for Fabry disease. Unfortunately, initial commercial batches of Myozyme made at Allston Landing differed from those made at Genzyme's smaller Framingham facility, requiring the company to conduct additional clinical trials and submit a new license application for the product.

In addition, an inspection of the Allston Landing plant by the US Food and Drug Administration in the fall of 2008, found deviations from good manufacturing practices (GMPs), including inadequate procedures for preventing contamination, equipment maintenance, maintaining in-process controls, and for computer systems validation. Genzyme thought it had addressed all these deficiencies by February 2009, but an FDA warning letter requested additional actions and information, as did another FDA communiqué in May.

As Genzyme struggled to address the FDA's concerns, in June 2009 it discovered viral contamination of a bioreactor used to produce Cerezyme in-process material. The company had to close the Allston Landing facility altogether for several weeks for decontamination. Almost all of the starting material used to make Cerezyme was scrapped, and several thousand patients were left with limited access to therapy for these very serious conditions.

As the cleaning process concluded, Genzyme then discovered problems with its fill–finish process at Allston; evidence of metal particulates, fibers, and other minute particles in certain batches of Cerezyme and Fabrazyme prompted a shutdown of those operations. Genzyme transferred those activities to facilities in Waterford, Ireland, and Geel, Belgium, along with all large-scale bulk production for Myozyme. Genzyme also contracted with Hospira to perform fill–finish work for its major drugs to support what it hoped would be expanded production in the coming year. The company is anxious to ramp up output because the FDA has moved to alleviate the Cerezyme shortage by fast-track approval of alternative therapies made by UK-based Shire and by the Israeli firm Protalix Biotherapeutics, which has linked up with Pfizer to commercialize its Gaucher treatment.

By the end of 2009, Genzyme was beginning to ship new lots of Cerezyme and Fabrazyme. But by then, revenues had slumped, along with the company's standing with investors. New competition was on the horizon, and the company had to implement a two-year corrective action plan to address the FDA's concerns about manufacturing processes and controls. Prominent stockholders raised questions about the leadership of Genzyme CEO Henri Termeer, who moved to deflect these challenges by bringing in new senior executives to oversee manufacturing, operations, and regulatory affairs. It remains to be seen if these responses are too little, too late.


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