Accrued liabilities consist of the following (in thousands):
December 31,2018
September 30,2019
Payroll and related expenses
$
241
640
Accrued term loan final payment
421
608
Accrued clinical trial expense
—
26
Professional fees and other costs
195
899
Total accrued liabilities
857
2,173
As of December 31,
2017
2018
273
197
654
34
1,158
Tabular disclosure of the components of accrued liabilities.
No definition available.