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Accrued Expenses and Other Current Liabilities - Components of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
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Accrued Expenses and Other Current Liabilities [Line Items] |  |
Total accrued expenses and other current liabilities | $ 15,656 | $ 14,665
External Research and Development Expenses |  |
Accrued Expenses and Other Current Liabilities [Line Items] |  |
Total accrued expenses and other current liabilities | 10,861 | 7,181
Personnel-related Expenses |  |
Accrued Expenses and Other Current Liabilities [Line Items] |  |
Total accrued expenses and other current liabilities | 2,336 | 5,793
Professional Fees |  |
Accrued Expenses and Other Current Liabilities [Line Items] |  |
Total accrued expenses and other current liabilities | 1,978 | 1,255
Deferred Offering Costs |  |
Accrued Expenses and Other Current Liabilities [Line Items] |  |
Total accrued expenses and other current liabilities | 215 |
Other |  |
Accrued Expenses and Other Current Liabilities [Line Items] |  |
Total accrued expenses and other current liabilities | $ 266 | $ 436

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