CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating expenses:
Research and development	$ 34,824	$ 31,379	$ 65,543	$ 60,446
General and administrative	12,480	13,245	24,992	27,371
Total operating expenses	47,304	44,624	90,535	87,817
Loss from operations	(47,304)	(44,624)	(90,535)	(87,817)
Total other income (loss), net:
Interest income	1,516	162	2,841	310
Other income (loss), net	521	(27)	1,244	(845)
Loss before income taxes	(45,267)	(44,489)	(86,450)	(88,352)
Income tax expense	0	150	0	150
Net loss	$ (45,267)	$ (44,639)	$ (86,450)	$ (88,502)
Net loss per share - basic	$ (0.48)	$ (0.69)	$ (0.92)	$ (1.38)
Net loss per share - diluted	$ (0.48)	$ (0.69)	$ (0.92)	$ (1.38)
Weighted-average common shares outstanding - basic	94,625,837	64,467,483	93,968,407	64,231,579
Weighted-average common shares outstanding - diluted	94,625,837	64,467,483	93,968,407	64,231,579
Comprehensive loss:
Net loss	$ (45,267)	$ (44,639)	$ (86,450)	$ (88,502)
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available-for-sale securities	76	(94)	243	(289)
Total other comprehensive income (loss)	76	(94)	243	(289)
Comprehensive loss	$ (45,191)	$ (44,733)	$ (86,207)	$ (88,791)