Property and Equipment, net

12 Months Ended

Dec. 31, 2021

Property Plant And Equipment [Abstract]

Property and Equipment, net

7. Property and Equipment, net

Property and equipment, net consists of the following:

	December 31,
	2021		2020
Computer and office equipment	$	239	$	211
Laboratory equipment		—		628
Furniture and fixtures		330		330
Leasehold improvements		1,223		1,212
	$	1,792	$	2,381
Less accumulated depreciation and amortization		1,161		1,541
Property and equipment, net	$	631	$	840

Depreciation and amortization expense included in R&D expense and G&A expense was $248, $209 and $198 for the years ended December 31, 2021, 2020 and 2019, respectively.

During the year ended December 31, 2021, the Company sold laboratory equipment that was fully depreciated, which resulted in gains on sales of property and equipment of $70. There were no gains or losses on sales of property and equipment during the years ended December 31, 2020 and 2019.