Balance Sheet Details (Tables)

6 Months Ended

Jun. 30, 2022

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Short-Term Investments

Short-term investments consisted of the following (dollar amounts in thousands):

	June 30, 2022
Description	Maturity	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Commercial paper	1 year or less	$	55,366	$	—	$	(182	)	$	55,184
U.S. Treasury securities	1 year or less		33,836		—		(160	)		33,676
		$	89,202	$	—	$	(342	)	$	88,860

	December 31, 2021
Description	Maturity	Amortized Costs		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Commercial paper	1 year or less	$	78,456	$	5	$	(3	)	$	78,458
U.S. Treasury securities	1 year or less		5,025		—		—			5,025
U.S. government agency debt securities	1 year or less		5,002		—		—			5,002
		$	88,483	$	5	$	(3	)	$	88,485

Schedule of Prepaid Expenses and Other Current Assets

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

	At June 30, 2022		At December 31, 2021
Interest receivable	$	106	$	62
Prepaid insurance		312		1,728
Prepaid research studies		926		1,190
Prepaid other		924		561
Total	$	2,268	$	3,541

Schedule of Prepaid Expenses, Net of Current Portion

Prepaid expenses, net of current portion, consisted of the following (dollar amounts in thousands):

	At June 30, 2022		At December 31, 2021
Prepaid clinical trial and other	$	3,810	$	3,409
	$	3,810	$	3,409

Schedule of Property and Equipment

Property and equipment consisted of the following (dollar amounts in thousands):

	At June 30, 2022			At December 31, 2021
Laboratory equipment and manufacturing equipment	$	657		$	591
Furniture and fixtures		258			258
Computer equipment and software		556			440
Leasehold improvements		2,095			2,095
		3,566			3,384
Less accumulated depreciation		(1,358	)		(1,001	)
Total	$	2,208		$	2,383

Schedule of Accrued Expenses

Accrued expenses consisted of the following (dollar amounts in thousands):

	At June 30, 2022		At December 31, 2021
Payroll and related liabilities	$	1,679	$	2,379
Professional fees		469		727
Research and development costs		5,852		5,066
Other		461		336
Total	$	8,461	$	8,508