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Accrued and Other Liabilities
3 Months Ended
Mar. 31, 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,     March 31,  
    2016     2017  
Accrued research and development   $ 2,138     $ 1,855  
Accrued legal and professional fees     194       271  
Other current liabilities     430       350  
    $ 2,762     $ 2,476