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Share capital - Founders’ warrants (Details) - BSPCE	12 Months Ended
	Dec. 31, 2024 patient employee
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of threshold | patient	500
Former employees
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of employees with service conditions lifted	2
Former Executive Board members
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of employees with service conditions lifted	2

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

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- Definition

Patient Threshold, Amount

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- Definition

Vesting Requirements For Share-Based Payment Arrangement, Continued Service Condition Lifted, Number Of Employees

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