Condensed Consolidated 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	$ 73,744	$ 45,404	$ 149,921	$ 85,741
General and administrative	18,324	10,505	37,914	20,726
Total operating expenses	92,068	55,909	187,835	106,467
Loss from operations	(92,068)	(55,909)	(187,835)	(106,467)
Interest income	1,135	81	1,211	230
Interest expense	(5)	(5)	(10)	(11)
Other income (expense), net	310	(19)	297	(51)
Net loss	$ (90,628)	$ (55,852)	$ (186,337)	$ (106,299)
Net loss per common share, basic	$ (1.74)	$ (1.08)	$ (3.57)	$ (2.06)
Net loss per common share, diluted	$ (1.74)	$ (1.08)	$ (3.57)	$ (2.06)
Weighted Average Number of Shares Outstanding, Basic	52,218,773	51,573,894	52,195,972	51,644,946
Weighted Average Number of Shares Outstanding, Diluted	52,218,773	51,573,894	52,195,972	51,644,946
Other comprehensive income (loss)
Change in unrealized losses related to available-for-sale debt securities, net of tax	$ (1,869)	$ (18)	$ (1,869)	$ (53)
Total other comprehensive income (loss)	(1,869)	(18)	(1,869)	(53)
Comprehensive loss	$ (92,497)	$ (55,870)	$ (188,206)	$ (106,352)