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Accounts Payable and Accrued Expenses
3 Months Ended
Mar. 31, 2018
Accounts Payable and Accrued Expenses [Abstract]  
Accounts Payable and Accrued Expenses
7. Accounts Payable and Accrued Expenses

At March 31, 2018 and December 31, 2017, the Company’s accounts payable and accrued expenses consisted of the following:

    
March 31,
2018
    
December 31,
2017
  
Bonus
 $
956
  $
703
 
Research and development
  
956
   
814
 
Severance and benefits
  
891
   
88
 
Professional fees
  
609
   
382
 
Government payable
  
513
   
 
Accrued interest
  
493
   
 
Other
  
149
   
25
 
Compensation and benefits
 
 
128
  
 
50
 
Accounts payable
  
67
   
 
  
$
4,762
  
$
2,062