Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses and other accrued liabilities (Details)

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Accrued Expenses and other accrued liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]    
Accrued license fees and sponsored research agreements $ 1,088 $ 260
Accrued payroll 194 250
Accrued clinical testing 152 320
Accrued legal and professional fees 194 50
Accrued other 197 22
Total accrued expenses and other liabilities $ 1,825 $ 902