v3.25.1

Intangible assets other than goodwill (Details) | 12 Months Ended
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Dec. 31, 2024 EUR (€) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 EUR (€) item
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | € 127,906,000 |  |  |
Ending balance | 164,862,000 |  | € 127,906,000 |
Number Of CAR T Product Candidates Acquired | item |  |  |  | 2
Upfront Exclusivity Consideration Paid | $ |  | $ 70,000,000 |  |
Acquisition value |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 175,290,000 |  | 176,740,000 |
Additions | 65,391,000 |  | 567,000 |
Sales and disposals | (5,476,000) |  | (1,878,000) |
Translation differences | 246,000 |  | (139,000) |
Ending balance | 235,451,000 |  | 175,290,000 | € 176,740,000
Amortization and impairment |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | (47,384,000) |  | (30,387,000) |
Amortization. | (28,613,000) |  | (18,892,000) |
Sales and disposals | 5,476,000 |  | 1,875,000 |
Translation differences | (68,000) |  | 20,000 |
Ending balance | (70,589,000) |  | (47,384,000) | (30,387,000)
Software and databases |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 8,440,000 |  |  |
Ending balance | 4,722,000 |  | 8,440,000 |
Software and databases | Acquisition value |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 27,014,000 |  | 27,377,000 |
Additions | 666,000 |  | 567,000 |
Sales and disposals | (1,863,000) |  | (930,000) |
Ending balance | 25,817,000 |  | 27,014,000 | 27,377,000
Software and databases | Amortization and impairment |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | (18,574,000) |  | (15,210,000) |
Amortization. | (4,384,000) |  | (4,291,000) |
Sales and disposals | 1,863,000 |  | 927,000 |
Ending balance | (21,095,000) |  | (18,574,000) | (15,210,000)
Licenses, rights, technology and in process R&D |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 38,817,000 |  |  |
Ending balance | 38,502,000 |  | 38,817,000 |
Licenses, rights, technology and in process R&D | Acquisition value |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 43,171,000 |  | 44,258,000 |
Sales and disposals | (3,613,000) |  | (948,000) |
Translation differences | 246,000 |  | (139,000) |
Ending balance | 39,804,000 |  | 43,171,000 | 44,258,000
Licenses, rights, technology and in process R&D | Amortization and impairment |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | (4,354,000) |  | (3,896,000) |
Amortization. | (493,000) |  | (1,426,000) |
Sales and disposals | 3,613,000 |  | 948,000 |
Translation differences | (68,000) |  | 20,000 |
Ending balance | (1,302,000) |  | (4,354,000) | (3,896,000)
Exclusive rights |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 71,929,000 |  |  |
Ending balance | 114,456,000 |  | 71,929,000 |
Exclusive rights | Acquisition value |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 89,720,000 |  | 89,720,000 |
Additions | 64,725,000 |  |  |
Ending balance | 154,445,000 |  | 89,720,000 | 89,720,000
Exclusive rights | Amortization and impairment |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | (17,791,000) |  | (6,154,000) |
Amortization. | (22,198,000) |  | (11,637,000) |
Ending balance | (39,989,000) |  | (17,791,000) | (6,154,000)
CAR-T Product Candidates [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Ending balance | 28,200,000 |  |  |
Exclusive Rights With Lonza [member] |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 71,900,000 |  |  |
Ending balance | 60,300,000 |  | 71,900,000 |
Contract costs |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 8,720,000 |  |  |
Ending balance | 7,182,000 |  | 8,720,000 |
Contract costs | Acquisition value |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | 15,384,000 |  | 15,384,000 |
Ending balance | 15,384,000 |  | 15,384,000 | 15,384,000
Contract costs | Amortization and impairment |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |
Beginning balance | (6,664,000) |  | (5,126,000) |
Amortization. | (1,538,000) |  | (1,538,000) |
Ending balance | € (8,202,000) |  | € (6,664,000) | € (5,126,000)

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