Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue:
Total revenue	$ 602	$ 0	$ 1,623	$ 170,000
Operating expenses:
Research and development	82,160	90,698	238,498	292,188
General and administrative	17,419	18,291	54,853	59,683
Collaboration expense, net	11,153	23,422	110,250	110,250
Total operating expenses	110,732	132,411	403,601	462,121
Loss from operations	(110,130)	(132,411)	(401,978)	(292,121)
Other income:
Other income, net	25,064	20,671	75,924	51,819
Total other income, net	25,064	20,671	75,924	51,819
Net loss before income taxes	(85,066)	(111,740)	(326,054)	(240,302)
Provision for income taxes	(876)	(412)	(2,887)	(2,655)
Net loss	(85,942)	(112,152)	(328,941)	(242,957)
Foreign currency translation adjustment	76	(49)	66	12
Unrealized gain on marketable securities	13,368	2,160	8,586	8,838
Comprehensive loss	$ (72,498)	$ (110,041)	$ (320,289)	$ (234,107)
Net loss per common share - basic	$ (1.01)	$ (1.41)	$ (3.92)	$ (3.07)
Basic weighted-average common shares outstanding	85,234,926	79,414,098	83,988,063	79,063,415
Net loss per common share - diluted	$ (1.01)	$ (1.41)	$ (3.92)	$ (3.07)
Diluted weighted-average common shares outstanding	85,234,926	79,414,098	83,988,063	79,063,415
Collaboration Revenue [Member]
Revenue:
Total revenue	$ 0	$ 0	$ 0	$ 170,000
Grant Revenue [Member]
Revenue:
Total revenue	$ 602	$ 0	$ 1,623	$ 0