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Accrued Expenses | 6 Months Ended
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Jun. 30, 2023
Accrued Expenses |
Accrued Expenses | 5. Accrued Expenses As of June 30, 2023 and December 31, 2022, accrued expenses consist of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of
​ | ​ | June 30, |  | December 31,
​ |  | 2023 | ​ | 2022
Accrued external research and development expense | ​ | $ | 5,925 | ​ | $ | 15,178
Accrued payroll and related expenses | ​ | ​ | 5,633 | ​ | ​ | 6,800
Accrued professional and consulting expense | ​ | ​ | 1,485 | ​ | ​ | 1,510
Accrued other | ​ | ​ | 762 | ​ | ​ | 833
​ | ​ | $ | 13,805 | ​ | $ | 24,321
​ ​ ​

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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