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Company information (Details) - Janssen Pharmaceutica NV € in Millions, $ in Millions | Mar. 17, 2025 EUR (€) | Jul. 07, 2023 EUR (€) | Jul. 07, 2023 USD ($)
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Disclosure Of Information Related To The Company [Line Items] |  |  |
Deal value |  | € 2,700 |
Nanobiotix Corp. | Top of range |  |  |
Disclosure Of Information Related To The Company [Line Items] |  |  |
Collaboration agreement, compensation per indication | $ |  |  | $ 220
Major ordinary share transactions |  |  |
Disclosure Of Information Related To The Company [Line Items] |  |  |
Deal value | € 2,600 |  |
Collaboration agreement, potential development and commercial milestones payments | € 105 |  |

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