CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating expenses:
Research and development	$ 33,062	$ 17,182	$ 79,132	$ 32,906
General and administrative	12,442	6,718	34,890	12,987
Total operating expenses	45,504	23,900	114,022	45,893
Loss from operations	(45,504)	(23,900)	(114,022)	(45,893)
Total other income (loss), net:
Interest income	253	112	1,233	735
Other (loss) income, net	(259)	174	(1,232)	573
Net loss	$ (45,510)	$ (23,614)	$ (114,021)	$ (44,585)
Net loss per share — basic and diluted	$ (0.72)	$ (0.58)	$ (1.82)	$ (2.93)
Weighted-average common shares outstanding — basic and diluted	62,962,434	40,465,705	62,588,898	15,195,000
Comprehensive loss:
Net loss	$ (45,510)	$ (23,614)	$ (114,021)	$ (44,585)
Other comprehensive (loss) income, net of tax:
Unrealized (loss) gain on available-for-sale securities	(3)	(125)	23	(83)
Foreign currency translation adjustment	(105)	(26)	(44)	(26)
Total other comprehensive (loss)	(108)	(151)	(21)	(109)
Comprehensive loss	$ (45,618)	$ (23,765)	$ (114,042)	$ (44,694)