Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating expenses:
Research and development	$ 8,258	$ 4,655	$ 49,178	$ 151,038
General and administrative	16,291	8,889	46,930	22,496
Total operating expenses	24,549	13,544	96,108	173,534
Loss from operations	(24,549)	(13,544)	(96,108)	(173,534)
Other income (expense):
Interest income, net	1,405	32	2,238	171
Other income (expense), net	1,253	3	1,873	(189)
Net loss before income taxes	(21,891)	(13,509)	(91,997)	(173,552)
Income taxes (benefit)	6	(397)	17	1,553
Net loss	(21,897)	(13,112)	(92,014)	(175,105)
Other comprehensive (loss) income:
Foreign currency translation (loss) income, net of tax	(2,282)	(26)	(3,096)	104
Unrealized loss on marketable securities, net of tax	(160)	0	(1,274)	0
Comprehensive loss	$ (24,339)	$ (13,138)	$ (96,384)	$ (175,001)
Net loss per share attributable to ordinary shareholders, basic (in dollars per share)	$ (0.20)	$ (0.63)	$ (0.85)	$ (8.52)
Net loss per share attributable to ordinary shareholders, diluted (in dollars per share)	$ (0.20)	$ (0.63)	$ (0.85)	$ (8.52)
Weighted-average shares outstanding used in computing net loss per share attributable to ordinary shareholders, basic (in shares)	108,353,831	20,690,908	107,854,547	20,549,310
Weighted-average shares outstanding used in computing net loss per share attributable to ordinary shareholders, diluted (in shares)	108,353,831	20,690,908	107,854,547	20,549,310