CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating expenses:
Research and development	$ 34,156	$ 30,004	$ 99,698	$ 90,450
General and administrative	12,805	12,946	37,797	40,318
Total operating expenses	46,961	42,950	137,495	130,768
Loss from operations	(46,961)	(42,950)	(137,495)	(130,768)
Total other income (loss), net:
Interest income	1,522	668	4,362	978
Other income (loss), net	1,167	210	2,411	(634)
Loss before income taxes	(44,272)	(42,072)	(130,722)	(130,424)
Income tax expense	0	0	0	150
Net loss	$ (44,272)	$ (42,072)	$ (130,722)	$ (130,574)
Net loss per share - basic	$ (0.39)	$ (0.5)	$ (1.3)	$ (1.83)
Net loss per share - diluted	$ (0.39)	$ (0.5)	$ (1.3)	$ (1.83)
Weighted-average common shares outstanding - basic	113,894,188	84,948,837	100,683,322	71,213,219
Weighted-average common shares outstanding - diluted	113,894,188	84,948,837	100,683,322	71,213,219
Comprehensive loss:
Net loss	$ (44,272)	$ (42,072)	$ (130,722)	$ (130,574)
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available-for-sale securities	25	(119)	268	(408)
Total other comprehensive income (loss)	25	(119)	268	(408)
Comprehensive loss	$ (44,247)	$ (42,191)	$ (130,454)	$ (130,982)