Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating expenses:
Research and development	$ 43,584	$ 9,100	$ 13,899
General and administrative	29,159	4,682	1,006
Total operating expenses	72,743	13,782	14,905
Loss from operations	(72,743)	(13,782)	(14,905)
Interest income (expense), net	4	(30)	(2,077)
Other expense, net	(15)	(31)	(2)
Changes in fair value of derivative tranche liability	0	(30,000)	0
Net loss and comprehensive loss	(72,754)	(43,843)	(16,984)
Total operating expenses	72,743	13,782	14,905
Net loss attributable to redeemable convertible noncontrolling interests	(2,109)	(3,336)	(4,350)
Exchange of redeemable noncontrolling interest shares-deemed dividend	(99,994)	0	0
Net loss attributable to common stockholders/members	$ (170,639)	$ (40,507)	$ (12,634)
Net loss per share, basic and diluted	$ (4.62)	$ (7.33)	$ (2.13)
Weighted-average number of common shares used in computing net loss per share, basic and diluted	36,960,569	5,529,519	5,924,640