Accrued expenses consisted of the following (in thousands):
September 30,
December 31,
2018
2017
Accrued payroll and related expenses
$
2,003
1,542
Accrued research and development expenses
5,510
3,930
Accrued professional fees
647
556
Accrued other
246
92
8,406
6,120
No definition available.
Tabular disclosure of the components of accrued liabilities.