Condensed 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	$ 58,195	$ 29,311	$ 99,473	$ 52,511
General and administrative	21,946	8,032	37,862	15,944
Total operating expenses	80,141	37,343	137,335	68,455
Loss from operations	(80,141)	(37,343)	(137,335)	(68,455)
Other income (expense):
Interest income	6,320	5,104	13,226	9,290
Interest expense	(1,874)	(1,912)	(3,667)	(3,819)
Other (expense) income, net	(836)	443	(449)	893
Total other income, net	3,610	3,635	9,110	6,364
Net loss	(76,531)	(33,708)	(128,225)	(62,091)
Other comprehensive loss:
Change in unrealized gains and losses on marketable securities	(127)	(277)	134	(700)
Comprehensive loss	$ (76,658)	$ (33,985)	$ (128,091)	$ (62,791)
Net loss per share attributable to common stockholders, basic	$ (1.2)	$ (0.62)	$ (2.01)	$ (1.17)
Net loss per share attributable to common stockholders, diluted	$ (1.2)	$ (0.62)	$ (2.01)	$ (1.17)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic	63,789,303	54,728,552	63,730,756	52,850,242
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted	63,789,303	54,728,552	63,730,756	52,850,242