Segment Information (Tables)

12 Months Ended

Dec. 31, 2025

Segment Reporting [Abstract]

Schedule of Reconciliation of Segment Loss Before Income Taxes and Total Consolidated Loss Before Income Taxes

The following table presents selected financial information with respect to the Company’s single operating segment for the years ended December 31, 2025, 2024, and 2023 (in thousands):

	Therapeutics Segment
	Year Ended December 31,
	2025		2024		2023
Total collaboration revenue	$	—	$	—	$	330,531
Expenses
External research and development expenses - TV programs, including cost sharing	154,799		138,196		139,064
External research and development expenses - small molecule programs, including cost sharing	8,800		42,623		49,850
Other research and development expenses	86,958		62,715		74,518
Personnel related research and development expenses	168,221		152,906		160,444
Total research and development expenses	418,778		396,440		423,876
Personnel related general and administrative expenses	86,234		73,505		73,668
Other general and administrative expenses	50,330		31,933		29,686
Total general and administrative expenses	136,564		105,438		103,354
Segment operating expenses	555,342		501,878		527,230
Segment gain from divestiture of small molecule programs	—		14,537		—
Segment loss from operations	(555,342)		(487,341)		(196,699)
Segment interest and other income, net	42,904		64,636		51,505
Segment loss before income taxes	$	(512,438)	$	(422,705)	$	(145,194)