Commitments and Contingencies

12 Months Ended

Dec. 31, 2011

Commitments and Contingencies

Commitments and Contingencies

9. Commitments and Contingencies

Guarantees and Indemnifications

        The Company indemnifies its officers and directors for certain events or occurrences, subject to certain limits. The Company believes the fair value of these indemnification agreements is minimal. Accordingly, the Company has not recognized any liabilities relating to these agreements as of December 31, 2011.

Purchase Obligations

        As of December 31, 2011, the Company had outstanding purchase obligations on commercially reasonable terms, primarily for services under contract research, development and clinical supply agreements totaling $1.0 million.