CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenue:
Total revenue	$ 17,389
Revenue from Contract with Customer, Product and Service [Extensible Enumeration]	us-gaap:LicenseMember	us-gaap:LicenseMember
Operating expenses:
Research and development expenses, including related party expenses of $262 and $421 for the three months ended March 31, 2025 and 2024, respectively	$ 96,622	$ 41,961
General and administrative expenses	22,295	5,632
Total operating expenses	118,917	47,593
Loss from operations	(101,528)	(47,593)
Other income (expense):
Interest income	2,609	854
Change in fair value of derivative liability		(3,095)
Other income (expenses), net	(44)	(15)
Total other income (expense), net	2,565	(2,256)
Net loss	(98,963)	(49,849)
Other comprehensive income (loss):
Unrealized gain (loss) on marketable securities, net	(48)	(3)
Net loss and other comprehensive loss	$ (99,011)	$ (49,852)
Net loss per share attributable to common stockholders, basic	$ (1.82)	$ (21.03)
Net loss per share attributable to common stockholders, diluted	$ (1.82)	$ (21.03)
Weighted-average shares of common stock outstanding, basic	54,280,264	2,370,051
Weighted-average shares of common stock outstanding, diluted	54,280,264	2,370,051