Property and Equipment

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property and Equipment

6. Property and Equipment

Property and equipment consisted of the following as of December 31, 2021 and 2020:

	December 31,
	2021			2020
Furniture and fixtures	$	339		$	339
Lab and office equipment		7,837			7,536
Computer equipment		331			339
Internal-use software		1,572			1,572
Leasehold improvements		506			505
Property and equipment		10,585			10,291
Less accumulated depreciation and amortization		(4,236	)		(2,942	)
Net property and equipment	$	6,349		$	7,349

Depreciation and amortization expense from continuing operations was approximately $1.2 million and $0.8 million for the years ended December 31, 2021 and 2020, respectively. There was internal-use software amortization expense included in depreciation and amortization expense in 2021 of approximately $0.3 million. As of December 31, 2021, capitalized external-use software was fully amortized.