CONSOLIDATED STATEMENT OF OPERATIONS AND COMPREHENSIVE LOSS (Parenthetical) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Dec. 31, 2024	Dec. 31, 2025
Research and development	[1]	$ 14,034	$ 138,086
General and administrative	[2]	3,157	25,390
Interest expense	[3]	852	2,185
Related Party
Research and development		13,185	23,653
General and administrative		571	720
Interest expense		$ 341	$ 865

[1] Includes related party amount of $23,653 for the twelve months ended months ended December 31, 2025 and $13,185 for the period from September 19, 2024 (inception) through December 31, 2024.

[2] Includes related party amount of $720 for the twelve months ended months ended December 31, 2025 and $571 for the period from September 19, 2024 (inception) through December 31, 2024.

[3] Includes related party amount of $865 for the twelve months ended December 31, 2025 and $341 for the period from September 19, 2024 (inception) through December 31, 2024.