CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating expenses:
Research and development	$ 25,677	$ 8,885	$ 46,070	$ 15,724
General and administrative	11,978	3,268	22,448	6,269
Total operating expenses	37,655	12,153	68,518	21,993
Loss from operations	(37,655)	(12,153)	(68,518)	(21,993)
Total other income (loss), net:
Interest income	475	166	980	623
Other (loss) income, net	(408)	355	(973)	399
Net loss	$ (37,588)	$ (11,632)	$ (68,511)	$ (20,971)
Net loss per share — basic and diluted	$ (0.60)	$ (4.43)	$ (1.10)	$ (8.66)
Weighted-average common shares outstanding — basic and diluted	62,344,718	2,625,648	62,399,034	2,420,797
Comprehensive loss:
Net loss	$ (37,588)	$ (11,632)	$ (68,511)	$ (20,971)
Other comprehensive (loss) income, net of tax:
Unrealized (loss) gain on available-for-sale securities	(16)	(134)	26	42
Foreign currency translation adjustment	(22)		61
Total other comprehensive (loss) income	(38)	(134)	87	42
Comprehensive loss	$ (37,626)	$ (11,766)	$ (68,424)	$ (20,929)