Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating expenses:
Research and development	$ 21,170	$ 33,032	$ 47,139	$ 61,606
In-process research and development	7,500	22,500	7,500	22,500
General and administrative	9,455	12,250	19,116	22,527
Total operating expenses	38,125	67,782	73,755	106,633
Loss from operations	(38,125)	(67,782)	(73,755)	(106,633)
Other income (expense)
Interest income	4,330	5,041	9,070	8,941
Other expense, net	(81)	(460)	(157)	(526)
Total other income (expense), net	4,249	4,581	8,913	8,415
Net loss	$ (33,876)	$ (63,201)	$ (64,842)	$ (98,218)
Net loss per share, basic	$ (0.12)	$ (0.29)	$ (0.23)	$ (0.53)
Net loss per share, diluted	$ (0.12)	$ (0.29)	$ (0.23)	$ (0.53)
Weighted-average shares of common stock used in computing net loss per share, basic	283,355,730	217,806,567	283,308,273	184,484,154
Weighted-average shares of common stock used in computing net loss per share, diluted	283,355,730	217,806,567	283,308,273	184,484,154
Other comprehensive income (loss):
Unrealized (loss) gain on marketable securities, net	$ (213)	$ 14	$ 10	$ (273)
Comprehensive loss	$ (34,089)	$ (63,187)	$ (64,832)	$ (98,491)