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Accrued Expenses
 9 Months Ended
Sep. 30, 2016
Payables and Accruals [Abstract]  
Accrued Expenses
4. Accrued Expenses

Accrued expenses consisted of the following:

 

     September 30,
2016		      December 31,
2015		  
     (In thousands)  

Employee compensation and benefits

    $ 1,874       $ 1,281   

In-process research and development obligation

      —           600   

Research and development and professional expenses

      2,936         907   
  

 

 

     

 

 

  

Accrued expenses

    $ 4,810       $ 2,788   
  

 

 

     

 

 

  

In July 2014, the Company entered into agreements with Caribou Biosciences, Inc. (“Caribou”), under which the Company received a license for certain patents and limited research and development services from Caribou. The in-process research and development obligation represented the portion of the Company’s obligation under these agreements that is attributable to the license.