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Accrued Liabilities
9 Months Ended
Sep. 30, 2018
Payables and Accruals [Abstract]  
Accrued Liabilities
ACCRUED LIABILITIES

Accrued liabilities consisted of the following:
 
September 30,
2018
 
December 31,
2017
 
(in thousands)
Accrued outsourced clinical trial and preclinical studies
$
2,005

 
$
581

Accrued employee compensation and related taxes
1,259

 
1,538

Accrued legal fees and expenses
358

 
185

Accrued equipment and lab materials
284

 
197

Accrued other professional service fees
101

 
232

Deferred and accrued facility lease obligations
83

 
74

Value of liability-classified stock purchase warrants
82

 
82

Other accrued liabilities
164

 
102

Total accrued liabilities
$
4,336

 
$
2,991