CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement [Abstract]
Collaboration Revenue—from related parties	$ 10,287	$ 9,466
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	us-gaap:RelatedPartyMember	us-gaap:RelatedPartyMember
Operating expenses:
Research and development	$ 48,819	$ 42,227
General and administrative	14,374	12,565
Impairment of long-lived assets	4,925	0
Total operating expenses	68,118	54,792
Loss from operations	(57,831)	(45,326)
Other income (expense):
Interest and other Income	9,343	4,453
Interest and other expense	(69)	(55)
Total other income:	9,274	4,398
Net loss	(48,557)	(40,928)
Other comprehensive loss:
Unrealized gain (loss) on marketable securities	(1,225)	1,911
Total comprehensive loss	(49,782)	(39,017)
Net loss	$ (48,557)	$ (40,928)
Net loss per share, basic and diluted	$ (0.69)	$ (0.7)
Net loss per share, basic and diluted	$ (0.69)	$ (0.7)
Weighted average common shares outstanding, basic and diluted	70,770,320	58,187,038
Weighted average common shares outstanding, basic and diluted	70,770,320	58,187,038