Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2021

Accrued expenses consist of the following:

	December 31, 2021		December 31, 2020
Accrued payroll and bonus expenses	$	771	$	966
Accrued other expenses		272		614
Accrued manufacturing expenses		77		105
Accrued clinical trial costs		45		144
Total	$	1,165	$	1,829