Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue:
License and other revenue	$ 677	$ 0	$ 8,355	$ 10,007
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember
Total revenue	$ 677	$ 0	$ 8,355	$ 10,007
Operating expenses:
Research and development expenses	63,897	91,992	137,706	174,395
Change in fair value of contingent consideration liability	0	(11,374)	0	(13,206)
General and administrative expenses	13,627	20,139	32,366	39,938
Total operating expenses	77,524	100,757	170,072	201,127
Loss from operations	(76,847)	(100,757)	(161,717)	(191,120)
Other income:
Interest income	7,105	8,547	14,918	17,498
Other (expense) income	(633)	(2)	(641)	23
Total other income, net	6,472	8,545	14,277	17,521
Net loss	$ (70,375)	$ (92,212)	$ (147,440)	$ (173,599)
Net loss per share, basic	$ (0.41)	$ (0.69)	$ (0.87)	$ (1.32)
Net loss per share, diluted	$ (0.41)	$ (0.69)	$ (0.87)	$ (1.32)
Weighted average shares of common stock, basic	171,264,622	132,821,826	170,254,500	131,832,420
Weighted average shares of common stock, diluted	171,264,622	132,821,826	170,254,500	131,832,420
Other comprehensive (loss) income:
Unrealized holding (loss) gain	$ (201)	$ (182)	$ 828	$ (1,144)
Total other comprehensive (loss) income	(201)	(182)	828	(1,144)
Total comprehensive loss	$ (70,576)	$ (92,394)	$ (146,612)	$ (174,743)