Accrued Expenses and Other Current Liabilities (Tables)

6 Months Ended

Jun. 30, 2013

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Components of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

	June 30, 2013		December 31, 2012
Clinical and preclinical trials	$	29,043	$	25,150
Payroll and payroll-related		12,682		13,439
Royalties payable		4,809		2,296
Interest payable		1,698		1,698
Accrued professional services and other current liabilities		9,253		6,368
Total	$	57,485	$	48,951