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v3.25.2

Related Party Transactions - Additional Information (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Research and development expense | [1] |  | $ 22,680,000 | $ 15,689,000 | $ 42,252,000 | $ 28,193,000 |
General and administrative expense | [2] |  | 6,816,000 | $ 5,111,000 | 14,352,000 | 9,701,000 |
Accounts payable |  |  | 3,176,000 |  | 3,176,000 |  | $ 1,954,000
Accrued expenses |  |  | 6,944,000 |  | 6,944,000 |  | 6,076,000
Common Stock |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Additional share purchased |  |  |  | 9,200,000 |  |  |
IPO | Common Stock |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Additional share purchased |  | 9,200,000 |  |  |  |  |
Janssen |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Costs incurred |  |  |  |  | 0 | 69,000 |
Accounts payable |  |  | 0 |  | 0 |  | 0
Accrued expenses |  |  | 0 |  | 0 |  | 0
Third Rock |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |
Costs incurred |  |  |  |  | 0 | $ 100,000 |
Accrued expenses |  |  | $ 0 |  | $ 0 |  | $ 0
[1] | Includes related party amounts of zero for each of the three months ended June 30, 2025 and 2024, and zero and less than $0.1 million for the six months ended June 30, 2025 and 2024, respectively (see Note 10).
[2] | Includes related party amounts of zero for each of the three months ended June 30, 2025 and 2024, and zero and $0.1 million for the six months ended June 30, 2025 and 2024, respectively (see Note 10).

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