STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating expenses:
Research and development	$ 21,310	$ 22,409	$ 44,131	$ 38,879
General and administrative	8,151	5,513	15,618	11,010
Total operating expenses	29,461	27,922	59,749	49,889
Loss from operations	(29,461)	(27,922)	(59,749)	(49,889)
Other income, net	2,087	1,057	2,910	1,724
Net loss	$ (27,374)	$ (26,865)	$ (56,839)	$ (48,165)
Per share information:
Net loss per share of common stock, basic	$ (0.58)	$ (0.58)	$ (1.20)	$ (1.06)
Weighted average common shares outstanding, basic	47,276,684	46,057,112	47,172,136	45,592,117
Net loss per share of common stock, diluted	$ (0.58)	$ (0.58)	$ (1.20)	$ (1.06)
Weighted average common shares outstanding, diluted	47,276,684	46,057,112	47,172,136	45,592,117
Comprehensive loss
Net loss	$ (27,374)	$ (26,865)	$ (56,839)	$ (48,165)
Unrealized gain (loss) on marketable securities, net of tax	19		(1,583)
Comprehensive loss	$ (27,355)	$ (26,865)	$ (58,422)	$ (48,165)