Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Consolidated Statements of Operations and Comprehensive Loss
Collaboration revenues	$ 26,976	$ 14,463	$ 11,697
Operating expenses:
Research and development	156,496	81,609	44,880
General and administrative	60,426	49,507	32,435
Total operating expenses	216,922	131,116	77,315
Loss from operations	(189,946)	(116,653)	(65,618)
Other income (expense):
Interest income	14,002	5,756	120
Interest expense	(3,263)	(3,344)	(2,984)
Total other income (expense), net	10,739	2,412	(2,864)
Net loss before income tax provision	(179,207)	(114,241)	(68,482)
Provision for (benefit from) income taxes	1,457	(1,524)	(1,663)
Net loss	$ (180,664)	$ (112,717)	$ (66,819)
Net loss per share, basic	$ (5.08)	$ (3.80)	$ (2.67)
Net loss per share, diluted	$ (5.08)	$ (3.80)	$ (2.67)
Weighted average ordinary shares outstanding, basic	35,592,362	29,660,659	25,061,734
Weighted average ordinary shares outstanding, diluted	35,592,362	29,660,659	25,061,734
Comprehensives loss:
Net Income (Loss)	$ (180,664)	$ (112,717)	$ (66,819)
Other comprehensive (loss) income:
Foreign currency translation adjustment	(1,691)	3,775	(195)
Total comprehensive loss	$ (182,355)	$ (108,942)	$ (67,014)