Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Operating expenses
Research and development	[1]	$ 15,543	$ 7,580	$ 43,736	$ 16,200
General and administrative	[2]	6,097	1,984	15,798	5,185
Total operating expenses		21,640	9,564	59,534	21,385
Loss from operations		(21,640)	(9,564)	(59,534)	(21,385)
Other income (expense):
Interest income		4,103	856	8,597	1,152
Change in fair value of preferred stock tranche right liability				(7,390)	(1,030)
Total other income, net		4,103	856	1,207	122
Net loss before income taxes		(17,537)	(8,708)	(58,327)	(21,263)
Provision for income taxes			1		4
Net loss		$ (17,537)	$ (8,709)	$ (58,327)	$ (21,267)
Net loss per share attributable to common stockholders, basic		$ (0.5)	$ (5.7)	$ (3.66)	$ (14.72)
Net loss per share attributable to common stockholders, diluted		$ (0.5)	$ (5.7)	$ (3.66)	$ (14.72)
Weighted-average common shares outstanding, basic		34,855,907	1,529,216	15,925,777	1,444,666
Weighted-average common shares outstanding, diluted		34,855,907	1,529,216	15,925,777	1,444,666
Comprehensive loss:
Net loss		$ (17,537)	$ (8,709)	$ (58,327)	$ (21,267)
Change in unrealized gains (losses) on investments, net of tax		583		396
Total other comprehensive income (loss)		583		396
Comprehensive loss		$ (16,954)	$ (8,709)	$ (57,931)	$ (21,267)

[1] Includes related party amounts of zero for each of the three months ended September 30, 2024 and 2023, and less than $0.1 million and $0.5 million for the nine months ended September 30, 2024 and 2023, respectively (see Note 10).

[2] Includes related party amounts of zero and $0.2 million for the three months ended September 30, 2024 and 2023, respectively and $0.1 million and $0.7 million for the nine months ended September 30, 2024 and 2023, respectively (see Note 10).