CONSOLIDATED STATEMENT OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2026	Mar. 31, 2025
Income Statement [Abstract]
License agreement revenue		$ 1,039	$ 0
Operating Expenses [Abstract]
Research and development	[1]	17,903	10,627
General and administrative	[2]	7,865	3,597
Total operating expenses		25,768	14,224
Loss from operations		(24,729)	(14,224)
Other income (expense):
Interest income		1,446	188
Interest expense	[3]	0	(1,112)
Total other income (expense)		1,446	(924)
Net loss and comprehensive loss		(23,283)	(15,148)
Net loss and comprehensive loss		$ (23,283)	$ (15,148)
Net loss per share attributable to ordinary shareholders, basic (in dollars per share)		$ (0.70)	$ (19.63)
Net loss per share attributable to ordinary shareholders, diluted (in dollars per share)		(0.70)	(19.63)
Net loss per share attributable to Series A non-voting convertible preferred shareholders, basic (in dollars per share)		(699.31)	0
Net loss per share attributable to Series A non-voting convertible preferred shareholders, diluted (in dollars per share)		$ (699.31)	$ 0
Weighted-average ordinary shares outstanding used in computing net loss per share to ordinary shareholders, basic (in shares)		30,397,886	771,851
Weighted-average ordinary shares outstanding used in computing net loss per share to ordinary shareholders, diluted (in shares)		30,397,886	771,851
Weighted-average Series A non-voting convertible preferred shares outstanding used in computing net loss per share to Series A non-voting convertible preferred shareholders, basic (in shares)		2,890	0
Weighted-average Series A non-voting convertible preferred shares outstanding used in computing net loss per share to Series A non-voting convertible preferred shareholders, diluted (in shares)		2,890	0

[1] Includes related party amount of $2,923 and $8,777 for the three months ended March 31, 2026 and March 31, 2025, respectively.

[2] Includes related party amount of $0 and $466 for the three months ended March 31, 2026 and March 31, 2025, respectively.

[3] Includes related party amount of $0 and $445 for the three months ended March 31, 2026 and March 31, 2025, respectively.