CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue
Total revenue	$ 709	$ 0
Expenses
Research and development	130,976	104,071
General and administrative	53,951	28,350
Total operating expenses	184,927	132,421
Loss from operations	(184,218)	(132,421)
Other expense, net	(4,168)	(3,259)
Net loss	(188,386)	(135,680)
Unrealized loss on available-for-sale investments	(4,802)	(303)
Comprehensive loss	$ (193,188)	$ (135,983)
Basic net loss per share (USD per share)	$ (3.40)	$ (2.67)
Diluted net loss per share (USD per share)	$ (3.40)	$ (2.67)
Weighted average common shares outstanding, basic (shares)	55,468,851	50,779,364
Weighted average common shares outstanding, diluted (shares)	55,468,851	50,779,364