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	$ 72,539	$ 37,294	$ 127,562	$ 73,855
General and administrative	20,467	13,216	37,974	27,226
Total operating expenses	93,006	50,510	165,536	101,081
Loss from operations	(93,006)	(50,510)	(165,536)	(101,081)
Interest income, net	667	10	962	25
Other income (expense), net	1,868	(2,739)	5,809	(3,164)
Loss before income taxes	(90,471)	(53,239)	(158,765)	(104,220)
Net loss	$ (90,471)	$ (53,239)	$ (158,765)	$ (104,220)
Net loss per share, basic and diluted	$ (0.61)	$ (0.42)	$ (1.07)	$ (0.82)
Weighted-average shares used in calculating net loss per share, basic and diluted	148,295,716	127,482,127	148,141,180	127,354,540
Comprehensive loss:
Net loss	$ (90,471)	$ (53,239)	$ (158,765)	$ (104,220)
Other comprehensive income (loss)
Changes in fair value attributable to instrument-specific credit risk	9,554		10,830
Unrealized gains (losses) on securities available-for-sale	(232)		(1,856)
Total other comprehensive income (loss)	9,322		8,974
Comprehensive loss	$ (81,149)	$ (53,239)	$ (149,791)	$ (104,220)