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Segment Disclosures - Schedule of Segment Loss from Operations (Details) - USD ($)
$ in Thousands

2 Months Ended

3 Months Ended

Mar. 31, 2024

Mar. 31, 2025

Schedule of Segment Loss from Operations [Line Items]

Research and development personnel-related expense (excluding stock-based compensation)

^[1]

$ 5,193

$ 19,925

General and administrative personnel-related expense (excluding stock-based compensation)

^[2]

1,670

5,161

Total operating expenses

6,863

25,086

Loss from operations

(6,863)

(25,086)

Operating Expense Excluding Personnel Related And Stock Based Compensation [Member]

Schedule of Segment Loss from Operations [Line Items]

Research and development personnel-related expense (excluding stock-based compensation)

194

2,463

General and administrative personnel-related expense (excluding stock-based compensation)

766

1,694

Allocated ShareBased Compensation Expense [Member}

Schedule of Segment Loss from Operations [Line Items]

Research and development personnel-related expense (excluding stock-based compensation)

70

3,003

General and administrative personnel-related expense (excluding stock-based compensation)

15

1,880

External [Member]

Schedule of Segment Loss from Operations [Line Items]

Research and development personnel-related expense (excluding stock-based compensation)

4,905

13,610

Other [Member]

Schedule of Segment Loss from Operations [Line Items]

Research and development personnel-related expense (excluding stock-based compensation)

24

849

Operating Expense Excluding Personnel Related And Stock Based Compensation [Member]

Schedule of Segment Loss from Operations [Line Items]

General and administrative personnel-related expense (excluding stock-based compensation)

$ 889

$ 1,587

[1]	Includes related party amounts of $2,122 for the three months ended March 31, 2025 and $5,051 for the period from February 6, 2024 (inception) to March 31, 2024
[2]	Includes related party amounts of $110 for the three months ended March 31, 2025 and $848 for the period from February 6, 2024 (inception) to March 31, 2024

X

- Definition

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