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Accrued and Other Liabilities
6 Months Ended
Jun. 30, 2017
Payables And Accruals [Abstract]  
Accrued and Other Liabilities
5.Accrued and Other Liabilities

 

Accrued and other current liabilities consisted of the following (in $000s):

 

  December 31,  June 30, 
  2016  2017 
Accrued research and development $2,138  $1,846 
Accrued legal and professional fees  194   253 
Other current liabilities  430   182 
  $2,762  $2,281