Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Collaboration revenue	$ 6,692	$ 2,093	$ 12,387	$ 3,497
Operating expenses:
Research and development	50,984	47,260	99,361	94,370
General and administrative	14,547	13,416	28,709	25,969
Total operating expenses	65,531	60,676	128,070	120,339
Loss from operations	(58,839)	(58,583)	(115,683)	(116,842)
Other income (expense):
Change in fair value of success payment liability	1,671	(662)	1,749	76
Interest and other income, net	7,429	5,438	15,565	10,984
Total other income, net	9,100	4,776	17,314	11,060
Loss before provision for income taxes	(49,739)	(53,807)	(98,369)	(105,782)
Provision for income taxes	(66)	(176)	(172)	(176)
Net loss	$ (49,805)	$ (53,983)	$ (98,541)	$ (105,958)
Net loss per common share, basic	$ (0.59)	$ (0.87)	$ (1.18)	$ (1.71)
Net loss per common share, diluted	$ (0.59)	$ (0.87)	$ (1.18)	$ (1.71)
Weighted-average common shares used in net loss per share, basic	84,226,523	61,953,992	83,679,742	61,871,158
Weighted-average common shares used in net loss per share, diluted	84,226,523	61,953,992	83,679,742	61,871,158
Comprehensive Loss:
Net Income (Loss)	$ (49,805)	$ (53,983)	$ (98,541)	$ (105,958)
Other comprehensive loss:
Unrealized loss on marketable securities	(115)	(517)	(887)	(60)
Comprehensive loss	$ (49,920)	$ (54,500)	$ (99,428)	$ (106,018)