Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenue:
Collaboration revenue - related party	$ 0	$ (522)
Type of Revenue [Extensible List]	us-gaap:LicenseAndServiceMember	us-gaap:LicenseAndServiceMember
Total revenue	$ 0	$ (522)
Operating expenses:
Research and development expenses	21,702	43,969
General and administrative expenses	15,466	22,470
Collaboration (profit) loss sharing - related party	2,418	3,607
Total operating expenses	39,586	70,046
Loss from operations	(39,586)	(70,568)
Other income (expense):
Interest income	1,648	1,032
Interest expense	(4,663)	(1,948)
Other income	2,468	310
Total other expense, net	(547)	(606)
Net loss	$ (40,133)	$ (71,174)
Net loss per share attributable to common stockholders, basic	$ (0.27)	$ (0.57)
Net loss per share attributable to common stockholders, diluted	$ (0.27)	$ (0.57)
Weighted-average common shares outstanding, basic	146,101,581	125,862,975
Weighted average common shares outstanding, diluted	146,101,581	125,862,975
Other comprehensive income (loss) :
Unrealized gain (loss) on investments, net of tax of $0	$ 0	$ 12
Currency translation adjustment	0	2
Total other comprehensive income (loss)	0	14
Comprehensive loss	$ (40,133)	$ (71,160)