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Fair Value of Financial Instruments - Schedule of Calculation of Estimated Fair Value of Success Payment Liabilities (Details) - Success Payment Liabilities | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023
Fair Value of Common Stock | Harvard |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Success payment liability measurement input | 24.8 | 27.22
Fair Value of Common Stock | Broad Institute |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Success payment liability measurement input | 24.8 | 27.22
Expected Volatility | Harvard |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Success payment liability measurement input | 0.78 | 0.80
Expected Volatility | Broad Institute |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Success payment liability measurement input | 0.81 | 0.79
Expected Term (years) | Minimum | Harvard |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Success payment liability, term | 10 days | 21 days
Expected Term (years) | Minimum | Broad Institute |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Success payment liability, term | 10 days | 21 days
Expected Term (years) | Maximum | Harvard |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Success payment liability, term | 4 years 5 months 26 days | 5 years 5 months 26 days
Expected Term (years) | Maximum | Broad Institute |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Success payment liability, term | 5 years 4 months 9 days | 6 years 4 months 9 days

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