Prepaid Expenses and Other Current Assets

12 Months Ended

Dec. 31, 2021

Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract]

Prepaid Expenses and Other Current Assets

3. Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following (in thousands):

	December 31,
	2021		2020
Prepaid research and development services	$	247	$	1,535
Prepaid insurance		505		362
Other prepaid expenses		2,813		19
Other receivable		—		2,876
Other current assets		4		373
Total prepaid expenses and other current assets	$	3,569	$	5,165