Shire and Sangamo revise agreement to expedite development of ZFP Therapeutics for Huntington's disease, hemophilia A and B

Sangamo BioSciences, Inc. (Nasdaq: SGMO), a leader in therapeutic genome editing, announced today that the company and its collaborator, Shire plc (LSE: SHP, NASDAQ: SHPG), have agreed to revise their January 2012 collaboration and license agreement to expedite the development of ZFP Therapeutics for hemophilia A and B and Huntington's disease.

The decision to restructure reflects a strategic decision by both Shire and Sangamo to focus efforts in areas of current interest and expertise for each company. Under the revised terms of the agreement, Shire will return to Sangamo the exclusive world-wide rights to gene targets for the development, clinical testing and commercialization of ZFP Therapeutics for hemophilia A and B. Shire will retain rights and will continue to develop ZFP Therapeutic clinical leads for Huntington's disease and a ZFP Therapeutic for one additional gene target yet to be named. Shire's rights with respect to other targets contemplated in the original agreement revert to Sangamo.

"Sangamo has greatly benefited from our collaboration with Shire, whose financial support has significantly aided in the development of our in vivo protein replacement platform, or IVPRP, which forms the basis of our hemophilia and lysosomal storage disorder programs," said Edward Lanphier, Sangamo's president and chief executive officer. "This restructuring allows us to accelerate the development of our potentially curative hemophilia A and B programs. We will also continue to leverage the potential of our powerful IVPRP for development of ZFP Therapeutics for other monogenic diseases, and remain on track to file Investigational New Drug (IND) applications for the hemophilia B program and the first of our lysosomal storage disorder programs by the end of 2015."

Under the revised agreement, each company is responsible for expenses associated with its own programs and will reimburse the other for any ongoing services provided. Sangamo has granted Shire a right of first negotiation to license the hemophilia A and B programs. No milestone payments will be made on any program and each company will pay certain royalties to the other on commercial sales up to a specified maximum cap. Additional financial details of the agreement will not be disclosed.