Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2022

Quarterly Financial Information Disclosure [Abstract]

Summary of Selected Quarterly Financial Data

The following tables provide the selected quarterly financial data for the years ended December 31, 2022 and 2021 (in thousands, except share and per share data):

	2022
	First			Second			Third			Fourth
	Quarter			Quarter			Quarter			Quarter
Statements of Operations Data:
Operating expenses:
Research and development	$	11,350		$	12,582		$	18,242		$	20,539
General and administrative		5,050			4,892			5,242			5,737
Total operating expenses		16,400			17,474			23,484			26,276
Loss from operations		(16,400	)		(17,474	)		(23,484	)		(26,276	)
Interest and other income, net		34			216			594			962
Net loss	$	(16,366	)	$	(17,258	)	$	(22,890	)	$	(25,314	)
Net loss per share, basic and diluted	$	(0.56	)	$	(0.59	)	$	(0.78	)	$	(0.86	)
Weighted-average number of shares outstanding,    basic and diluted		29,126,088			29,196,398			29,319,042			29,441,596

	2021
	First			Second			Third			Fourth
	Quarter			Quarter			Quarter			Quarter
Statements of Operations Data:
Operating expenses:
Research and development	$	3,798		$	5,224		$	7,886		$	11,088
General and administrative		2,059			3,211			4,752			3,649
Total operating expenses		5,857			8,435			12,638			14,737
Loss from operations		(5,857	)		(8,435	)		(12,638	)		(14,737	)
Interest and other income, net		5			36			32			27
Net loss	$	(5,852	)	$	(8,399	)	$	(12,606	)	$	(14,710	)
Net loss per share, basic and diluted	$	(0.49	)	$	(0.33	)	$	(0.43	)	$	(0.51	)
Weighted-average number of shares outstanding,    basic and diluted		11,964,205			25,161,038			29,001,213			29,061,076