Accrued expenses and other current liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Payables and Accruals [Abstract] | ||
| Accrued external research and development expenses | $ 7,759 | $ 5,057 |
| Accrued employee compensation and benefits | 2,215 | 4,192 |
| Accrued consultant and professional fees | 1,261 | 757 |
| Accrued expenses and other current liabilities | $ 11,235 | $ 10,006 |