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General Information, Statement of Compliance and Basis of Presentation (Details) - EUR (€) € in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
General Information, Statement of Compliance and Basis of Presentation [Abstract] |  |  |  |
Net losses | € 68,132 | € 39,700 | € 57,041 |
Accumulated deficit | 380,400 |  |  |
Decrease in cash and cash equivalents | 25,547 | (33,895) | 42,533 |
Cash and cash equivalents | € 49,737 | € 75,283 | € 41,388 | € 83,921

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