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Daiichi Sankyo, Inc. (DSI) began operating in the U.S. in 2006. It is the U.S. subsidiary of Daiichi Sankyo Company, Limited, and a member of the Daiichi Sankyo Group. The organization, which includes U.S. commercial operations and global clinical development (Daiichi Sankyo Pharma Development), is headquartered in Basking Ridge, New Jersey.