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Accrued Liabilities and Other Liabilities | 12 Months Ended
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Dec. 31, 2022
Accrued Liabilities and Other Liabilities |
Accrued Liabilities and Other Liabilities | 6. Accrued Liabilities and Other Liabilities Accrued liabilities consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
(in thousands) |  | 2022 |  | 2021
Payroll and related benefits | ​ | $ | 1,639 | ​ | $ | 1,751
Clinical trial costs | ​ | ​ | 1,531 | ​ | ​ | 727
Sponsored research | ​ |  | 417 | ​ |  | 1,315
Lease liabilities, current portion | ​ | ​ | 518 | ​ | ​ | —
Operating expenses | ​ | ​ | 647 | ​ | ​ | 656
Other | ​ |  | 105 | ​ |  | 217
Total accrued liabilities and other liabilities | ​ | $ | 4,857 | ​ | $ | 4,666
​

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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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