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Significant agreements - Cancer Research UK (Details) $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 04, 2024 GBP (£) | Dec. 13, 2016 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Research and development arrangement obligation to repay other parties |  |  |  |
Contingent future milestones payments under research and development arrangement |  | $ 50,900 |  |
Gain on extinguishment of research and development funding liability |  |  | $ 4,476 |
BT1718 |  |  |  |
Research and development arrangement obligation to repay other parties |  |  |  |
Liability from research and development |  |  |  | $ 4,300
Research and Development Arrangement, Upfront Cash Payment | £ | £ 50,000 |  |  |
Gain on extinguishment of research and development funding liability |  |  | $ 4,500 |
BT1718 | Minimum |  |  |  |
Research and development arrangement obligation to repay other parties |  |  |  |
Tiered royalties (percentage) |  | 70.00% |  |
BT1718 | Maximum |  |  |  |
Research and development arrangement obligation to repay other parties |  |  |  |
Tiered royalties (percentage) |  | 90.00% |  |

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