STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating expenses:
Research and development	$ 22,889	$ 22,721	$ 67,020	$ 61,600
General and administrative	7,517	8,115	23,135	19,125
Total operating expenses	30,406	30,836	90,155	80,725
Loss from operations	(30,406)	(30,836)	(90,155)	(80,725)
Other income, net	448	149	3,358	1,873
Net loss	$ (29,958)	$ (30,687)	$ (86,797)	$ (78,852)
Per share information:
Net loss per share of common stock, basic	$ (0.63)	$ (0.66)	$ (1.84)	$ (1.72)
Weighted average common shares outstanding, basic	47,449,811	46,330,794	47,265,712	45,841,049
Net loss per share of common stock, diluted	$ (0.63)	$ (0.66)	$ (1.84)	$ (1.72)
Weighted average common shares outstanding, diluted	47,449,811	46,330,794	47,265,712	45,841,049
Comprehensive loss
Net loss	$ (29,958)	$ (30,687)	$ (86,797)	$ (78,852)
Unrealized gain (loss) on marketable securities, net of tax	(69)	(176)	(1,652)	(176)
Comprehensive loss	$ (30,027)	$ (30,863)	$ (88,449)	$ (79,028)