Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating expenses
Research and development	[1]	$ 15,689	$ 4,721	$ 28,193	$ 8,620
General and administrative	[2]	5,111	1,909	9,701	3,201
Total operating expenses		20,800	6,630	37,894	11,821
Loss from operations		(20,800)	(6,630)	(37,894)	(11,821)
Other income (expense):
Interest income		2,679	221	4,494	296
Change in fair value of preferred stock tranche right liability				(7,390)	(1,030)
Total other income (expense), net		2,679	221	(2,896)	(734)
Net loss before income taxes		(18,121)	(6,409)	(40,790)	(12,555)
Provision for income taxes			2		3
Net loss		$ (18,121)	$ (6,411)	$ (40,790)	$ (12,558)
Net loss per share attributable to common stockholders, basic		$ (1.7)	$ (4.45)	$ (6.42)	$ (8.96)
Net loss per share attributable to common stockholders, diluted		$ (1.7)	$ (4.45)	$ (6.42)	$ (8.96)
Weighted-average common shares outstanding, basic		10,666,528	1,440,109	6,356,700	1,401,690
Weighted-average common shares outstanding, diluted		10,666,528	1,440,109	6,356,700	1,401,690
Comprehensive loss:
Net loss		$ (18,121)	$ (6,411)	$ (40,790)	$ (12,558)
Change in unrealized gains (losses) on investments, net of tax		(23)		(187)
Total other comprehensive income (loss)		(23)		(187)
Comprehensive loss		$ (18,144)	$ (6,411)	$ (40,977)	$ (12,558)

[1] Includes related party amounts of zero and $0.2 million for the three months ended June 30, 2024 and 2023, respectively and less than $0.1 million and $0.5 million for the six months ended June 30, 2024 and 2023, respectively (see Note 10).

[2] Includes related party amounts of zero and $0.2 million for the three months ended June 30, 2024 and 2023, respectively and $0.1 million and $0.5 million for the six months ended June 30 2024 and 2023, respectively (see Note 10).