Accrued expenses consisted of the following (in thousands): | | | | | | | | | | | | | September 30,
2024 | | December 31,
2023 | | External research and development expenses | $ | 13,839 | | | $ | 16,204 | | | Employee related expenses | 11,939 | | | 11,280 | | | Sublicense and license fees | — | | | 5,063 | | | Intellectual property and patent related fees | 1,610 | | | 983 | | | Professional service expenses | 831 | | | 750 | | | Other expenses | 566 | | | 283 | | | Total accrued expenses | $ | 28,785 | | | $ | 34,563 | |
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