Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income
Collaboration revenue	$ 4,853	$ 712	$ 155,333	$ 1,371
Operating expenses:
Research and development	21,985	12,527	40,553	26,876
General and administrative	8,294	7,552	17,322	15,211
Total operating expenses	30,279	20,079	57,875	42,087
Operating (loss) income	(25,426)	(19,367)	97,458	(40,716)
Other income, net:
Interest income	3,274	219	5,138	271
Other income:	3	61	3	39
Total other income, net	3,277	280	5,141	310
(Loss) income before income taxes	(22,149)	(19,087)	102,599	(40,406)
Income tax provision	59		763
Net (loss) income	(22,208)	(19,087)	101,836	(40,406)
Other comprehensive (loss) income:
Net unrealized (loss) gain on available-for-sale securities	(1)	(141)	86	(226)
Total other comprehensive (loss) income	(1)	(141)	86	(226)
Comprehensive (loss) income	$ (22,209)	$ (19,228)	$ 101,922	$ (40,632)
Net (loss) income per share, basic	$ (0.51)	$ (0.50)	$ 2.42	$ (1.06)
Net (loss) income per share, diluted	$ (0.51)	$ (0.50)	$ 2.33	$ (1.06)
Weighted-average common shares outstanding, basic	43,520,137	38,298,426	42,102,101	38,183,192
Weighted-average common shares outstanding, diluted	43,520,137	38,298,426	43,770,999	38,183,192