Accrued expenses consisted of the following (in thousands): | | | | | | | | | | | | | March 31,
2026 | | December 31,
2025 | | External research and development expenses | $ | 6,799 | | | $ | 9,672 | | | Employee related expenses | 2,780 | | | 5,220 | | | Sublicense and license fees | 2,401 | | | 5,501 | | | Intellectual property and patent related fees | 1,788 | | | 2,105 | | | Professional service expenses | 332 | | | 232 | | | Employee termination benefits | 594 | | | 1,555 | | | Restructuring contract costs | 6,094 | | | 7,769 | | | Other expenses | 460 | | | 556 | | | Total accrued expenses | $ | 21,248 | | | $ | 32,610 | |
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