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Accrued Expenses and Other Current Liabilities
12 Months Ended
Dec. 31, 2013
Payables and Accruals [Abstract]  
Accrued Expenses and Other Current Liabilities
Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consist of the following (in thousands):

 
December 31,
 
2013
 
2012
Clinical development expense
$
3,109

 
$
1,705

Patient assistance programs
2,618

 

Compensation and related benefits
1,999

 
217

Professional fees
713

 
116

Royalties
158

 

Interest expense
70

 

Accrued expenses and other current liabilities
$
8,667

 
$
2,038