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Collaboration agreements - Janssen Biotech (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 28, 2022 USD ($) target | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($)
Collaboration agreements |  |  |  |  |
Collaboration revenue |  | $ 5,573,000 | $ 11,000 | $ 11,893,000 | $ 32,000
Janssen Agreement |  |  |  |  |
Collaboration agreements |  |  |  |  |
Number of targets designated | target | 3 |  |  |  |
Proceeds from collaborators | $ 40,000,000 |  |  |  |
Collaboration revenue |  | 4,900,000 |  | 10,900,000 |
Deferred revenue |  | 29,100,000 |  | 29,100,000 |
Remaining performance obligation |  | 29,100,000 |  | 29,100,000 |
Contract assets |  | $ 0 |  | $ 0 |
Development, Regulatory & Commercial | Janssen Agreement |  |  |  |  |
Collaboration agreements |  |  |  |  |
Collaboration arrangements, maximum aggregate milestones | 505,000,000 |  |  |  |
Commercial | Janssen Agreement |  |  |  |  |
Collaboration agreements |  |  |  |  |
Collaboration arrangements, maximum aggregate milestones | $ 530,000,000 |  |  |  |

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