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	$ 13,834	$ 15,517	$ 30,662	$ 27,214
General and administrative	6,862	5,540	13,292	10,396
Total operating expenses	20,696	21,057	43,954	37,610
Loss from operations	(20,696)	(21,057)	(43,954)	(37,610)
Other income:
Interest income, net	409	33	508	77
Other	0	15	0	15
Total other income	409	48	508	92
Net loss	(20,287)	(21,009)	(43,446)	(37,518)
Other comprehensive (loss) income:
Unrealized (loss) gain on investments	(429)	(14)	(1,128)	34
Comprehensive loss	$ (20,716)	$ (21,023)	$ (44,574)	$ (37,484)
Net loss per share, basic	$ (0.51)	$ (0.57)	$ (1.10)	$ (1.02)
Net loss per share, diluted	$ (0.51)	$ (0.57)	$ (1.10)	$ (1.02)
Weighted-average shares outstanding, basic	39,481,628	36,701,836	39,456,812	36,690,824
Weighted-average shares outstanding, diluted	39,481,628	36,701,836	39,456,812	36,690,824