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Fair Value Measurements - Summary of Estimated Fair Value of Success Payment Liability Assumptions (Details) | Jun. 30, 2023 $ / shares | Dec. 31, 2022 $ / shares
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Fred Hutch |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of common stock Series A convertible preferred stock | $ 3.18 | $ 3.47
Fred Hutch | Risk-free interest rate | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 3.36 | 3.58
Fred Hutch | Risk-free interest rate | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 5.26 | 4.65
Fred Hutch | Expected volatility |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 0.800 | 0.800
Fred Hutch | Expected term (in years) | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 0.96 | 0.46
Fred Hutch | Expected term (in years) | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 4.47 | 4.97
Stanford |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value of common stock Series A convertible preferred stock | $ 3.18 | $ 3.47
Stanford | Risk-free interest rate | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 3.36 | 3.58
Stanford | Risk-free interest rate | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 5.26 | 4.65
Stanford | Expected volatility |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 0.800 | 0.800
Stanford | Expected term (in years) | Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 0.96 | 0.46
Stanford | Expected term (in years) | Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Success payment liability, measurement input (as a percent) | 6.25 | 6.75

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