Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Consolidated Statements of Operations [Abstract]
Revenue	$ 0	$ 0	$ 0	$ 0
Operating expenses:
Research and development	46,345	51,383	91,572	97,754
General and administrative	27,367	17,374	49,515	33,197
Total operating expenses	73,712	68,757	141,087	130,951
Loss from operations	(73,712)	(68,757)	(141,087)	(130,951)
Interest expense	(471)	(468)	(942)	(936)
Interest and other income, net	2,294	846	5,323	2,754
Accretion of discount on investments, net	2,243	2,678	5,006	5,097
Net loss	$ (69,646)	$ (65,701)	$ (131,700)	$ (124,036)
Net loss per share - basic (in dollars per share)	$ (0.74)	$ (0.82)	$ (1.4)	$ (1.55)
Net loss per share - diluted (in dollars per share)	$ (0.74)	$ (0.82)	$ (1.4)	$ (1.55)
Weighted-average common shares outstanding - basic (in shares)	93,746,243	80,472,362	93,759,894	79,965,755
Weighted-average common shares outstanding - diluted (in shares)	93,746,243	80,472,362	93,759,894	79,965,755