Accounts Payable, Accrued Expenses and Other Current Liabilities

6 Months Ended

Jun. 30, 2014

Payables And Accruals [Abstract]

Accounts Payable, Accrued Expenses and Other Current Liabilities

NOTE 8 — ACCOUNTS PAYABLE, ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

Accounts payable, accrued expenses and other current liabilities consisted of the following:

	June 30, 2014		December 31, 2013
Clinical and preclinical activities	$	30,318	$	34,182
Payroll and payroll-related		13,914		23,832
Accrued professional services and other current liabilities		11,626		9,379
Royalties and milestones payable		11,352		6,377
Accounts payable		9,287		3,290
Interest payable		1,698		1,698
Total	$	78,195	$	78,758

Accounts payable represents short-term liabilities for which the Company has received and processed a vendor invoice prior to the end of the reporting period. Accrued expenses and other current liabilities represent, among other things, compensation and related benefits to employees; royalties and milestone payments that are due to licensors of technologies; cash interest payable related to the Company’s Convertible Notes; estimated amounts due to third party vendors for services rendered prior to the end of the reporting period; and invoices received from third party vendors that have not yet been processed.