Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Consolidated Statements of Operations and Comprehensive Loss
Collaboration revenues	$ 5,352	$ 3,040	$ 21,645	$ 11,278
Operating expenses:
Research and development	39,868	22,752	111,799	56,890
General and administrative	16,281	10,047	45,557	38,830
Total operating expenses	56,149	32,799	157,356	95,720
Loss from operations	(50,797)	(29,759)	(135,711)	(84,442)
Other income (expense):
Interest income	3,985	1,991	7,726	3,117
Interest expense	(814)	(817)	(2,443)	(2,518)
Total other income (expense), net	3,171	1,174	5,283	599
Net loss before income tax provision	(47,626)	(28,585)	(130,428)	(83,843)
Provision for (benefit from) income taxes	2,272	(238)	1,137	(1,104)
Net loss	$ (49,898)	$ (28,347)	$ (131,565)	$ (82,739)
Net loss per share, basic	$ (1.26)	$ (0.96)	$ (3.95)	$ (2.79)
Net loss per share, diluted	$ (1.26)	$ (0.96)	$ (3.95)	$ (2.79)
Weighted average ordinary shares outstanding, basic	39,576,467	29,676,021	33,291,701	29,643,502
Weighted average ordinary shares outstanding, diluted	39,576,467	29,676,021	33,291,701	29,643,502
Comprehensives loss:
Net loss	$ (49,898)	$ (28,347)	$ (131,565)	$ (82,739)
Other comprehensive income:
Foreign currency translation adjustment	3,762	902	2,498	3,916
Total comprehensive loss	$ (46,136)	$ (27,445)	$ (129,067)	$ (78,823)