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	$ 30,138	$ 6,043	$ 57,082	$ 16,500
General and administrative	49,197	3,318	68,558	9,341
Change in fair value of contingent consideration	877	1,021	2,915	1,633
Total operating expenses	80,212	10,382	128,555	27,474
Operating loss	(80,212)	(10,382)	(128,555)	(27,474)
Other income (expense), net
Change in fair value of warrants liabilities	0	(653)	0	(652)
Interest income, net	3,596	174	8,687	434
Total other income (expense), net	3,596	(479)	8,687	(218)
Net loss	(76,616)	(10,861)	(119,868)	(27,692)
Other comprehensive income (loss)
Net unrealized gain on marketable securities	1,049	0	898	0
Foreign currency translation adjustment	(1)	(1)	(3)	(1)
Total comprehensive loss	$ (75,568)	$ (10,862)	$ (118,973)	$ (27,693)
Net loss per common share basic	$ (1.83)	$ (0.95)	$ (3.08)	$ (2.65)
Net loss per common share diluted	$ (1.83)	$ (0.95)	$ (3.08)	$ (2.65)
Weighted-average common shares outstanding used to calculate basic net loss per common share	41,879,025	11,436,748	38,917,169	10,443,186
Weighted-average common shares outstanding used to calculate diluted net loss per common share	41,879,025	11,436,748	38,917,169	10,443,186