CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Collaboration revenue	$ 129,013
Operating expenses:
Research and development	99,884	$ 66,609
General and administrative	32,291	30,639
Total operating expenses	132,175	97,248
Loss from operations	(3,162)	(97,248)
Other income:
Interest and other income	15,218	2,632
Total other income	15,218	2,632
Income (loss) before income taxes	12,056	(94,616)
Income tax	(18,741)	0
Net loss	$ (6,685)	$ (94,616)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (0.20)	$ (3.02)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (0.20)	$ (3.02)
Weighted-average common shares outstanding, basic (in shares)	33,050,319	31,293,312
Weighted-average common shares outstanding, diluted (in shares)	33,050,319	31,293,312
Other comprehensive loss:
Unrealized income (loss) on marketable securities, net of tax of $0	$ 2,252	$ (2,057)
Total other comprehensive income (loss)	2,252	(2,057)
Total comprehensive loss	$ (4,433)	$ (96,673)