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Accrued Expenses | 12 Months Ended
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Dec. 31, 2023
Accrued Expenses |
Accrued Expenses | (9) Accrued Expenses Accrued expenses include the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2023 | ​ | 2022
​ | ​ | (In thousands)
Accrued payroll and employee benefits | ​ | $ | 9,348 | ​ | $ | 7,526
Accrued research and development contract costs | ​ | ​ | 10,864 | ​ | ​ | 4,223
Accrued professional fees | ​ | ​ | 1,439 | ​ | ​ | 766
Other accrued expenses | ​ | ​ | 378 | ​ | ​ | 320
​ | ​ | $ | 22,029 | ​ | $ | 12,835
​

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