Sirtris Satisfies GSK's M&A Appetite

Pathway-oriented platforms are rare, and dealmaking around them can be complicated: partner too early or for too little and you risk giving away the store. But Sirtris pulled it off, via M&A, when GSK tendered a whopping $720 million for it in April. The deal is another example of Pharma's interest in platform biotechs and its hunger for innovation. But the unique nature of Sirtris's platform -- broad, but around a single set of biological targets -- makes it more one-off than trend-setting.

by Mark L. Ratner

Sirtris Pharmaceuticals Inc. is a company known for its overt--and, with hindsight--shrewd marketing of its sirtuin science, a biology around a class of enzymes that are thought to play a role in the aging process. Last November, we wrote that "it’ll be interesting to see if the momentum lasts as it approaches the challenges of later-stage clinical trials." ("Sirtris Strikes Again," The IN VIVO Blog, November 28, 2007.) We’ll never know

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