Accrued Expenses and Other Current Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

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Components of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

	March 31, 2013		December 31, 2012
Clinical and preclinical trials	$	24,622	$	25,150
Payroll and payroll-related		14,195		13,439
Interest payable		3,396		1,698
Accrued professional services and other current liabilities		12,714		8,664
Total	$	54,927	$	48,951