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Accrued expenses and other current liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023
Accrued expenses and other current liabilities |  |
Accrued employee compensation and benefits | $ 16,272 | $ 13,394
Accrued external research and development expenses | 14,978 | 11,839
Accrued professional fees | 4,196 | 1,143
Current portion of operating lease liabilities | $ 5,328 | $ 4,876
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Accrued expenses and other current liabilities | Accrued expenses and other current liabilities
Current portion of finance lease liabilities | $ 175 |
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Accrued expenses and other current liabilities | Accrued expenses and other current liabilities
Other | $ 297 | $ 257
Accrued expenses and other current liabilities | 41,246 | $ 31,509
Restructuring charges | $ 2,000 |
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] | Research and Development Expense |
Payments for restructuring | $ 1,600 |
Accrued restructuring costs | $ 400 |

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