Balance Sheet Components

12 Months Ended

Dec. 31, 2020

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Balance Sheet Components

3. Balance Sheet Components

Prepaid expenses and other current assets (in thousands)

	December 31,
	2020		2019
Preclinical and clinical	$	870	$	531
Clinical research organization receivable		262		—
Lease receivable		—		900
Unbilled receivable from CPRIT		—		1,604
Other		16		44
Total	$	1,148	$	3,079

Property and equipment, net (in thousands)

	December 31,
	2020			2019
Equipment and furniture	$	1,416		$	1,442
Buildings, leasehold and building improvements		2,673			2,674
		4,089			4,116
Less: Accumulated depreciation and amortization		(2,559	)		(2,308	)
Impairment loss		(1,004	)		—
Property and equipment, net	$	526		$	1,808

During the year ended December 31, 2020, the Company determined leasehold improvements were impaired as described in Note 2. Depreciation expense was approximately $0.3 million and $0.4 million for the years ended December 31, 2020 and 2019, respectively.

Intangible asset, net (in thousands)

	December 31,
	2020			2019
Assembled workforce	$	366		$	366
		366			366
Less: Accumulated amortization		(269	)		(147	)
Intangible asset, net	$	97		$	219

Amortization expense is expected to be approximately $0.1 million in each year over the next 0.8 years.

Accrued liabilities (in thousands)

	December 31,
	2020		2019
Payroll and related	$	1,052	$	1,248
Preclinical and clinical		707		5
Professional services		169		32
Other		395		212
Total	$	2,323	$	1,497