Accrued liabilities - Summary of Accrued Liabilities (Detail) - EUR (€) |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Disclosure Of Financial Liabilities [Line Items] | ||
| Accrued liabilities | € 24,389,457 | € 23,348,472 |
| Clinical Accrued Liabilities [Member] | ||
| Disclosure Of Financial Liabilities [Line Items] | ||
| Accrued liabilities | 9,884,234 | 5,806,522 |
| Personnel Related Accruals [Member] | ||
| Disclosure Of Financial Liabilities [Line Items] | ||
| Accrued liabilities | 7,939,302 | 11,432,445 |
| Manufacturing Accrued Liabilities [Member] | ||
| Disclosure Of Financial Liabilities [Line Items] | ||
| Accrued liabilities | 1,904,270 | 2,879,222 |
| Nonclinical Accrued Liabilities [Member] | ||
| Disclosure Of Financial Liabilities [Line Items] | ||
| Accrued liabilities | 642,784 | 527,935 |
| Consulting Professional And Audit Liability [Member] | ||
| Disclosure Of Financial Liabilities [Line Items] | ||
| Accrued liabilities | 1,509,230 | 1,226,432 |
| Other Accrued Liabilities [Member] | ||
| Disclosure Of Financial Liabilities [Line Items] | ||
| Accrued liabilities | € 2,509,637 | € 1,475,916 |