v3.26.1
Revenue from collaboration agreements - Summary of Deferred revenue related to the collaboration agreements (Detail) - EUR (€)
€ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Revenue [abstract]    
Current € 9,567 € 15,816
Non-current 13,632 18,541
Total € 23,199 € 34,357