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Balance Sheet Details | 12 Months Ended
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Dec. 31, 2024
Balance Sheet Details |
Balance Sheet Details | 6. Balance Sheet Details Property and Equipment, net Property and equipment as of December 31, 2024 and 2023 consisted of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, 2024 |  | December 31, 2023
Laboratory equipment | ​ | $ | 21,316 | ​ | $ | 19,678
Furniture and fixtures | ​ | ​ | 831 | ​ | ​ | 817
Office and computer equipment | ​ |  | 438 | ​ |  | 438
Leasehold improvements | ​ |  | 3,802 | ​ |  | 3,447
Total | ​ | ​ | 26,387 | ​ | ​ | 24,380
Less: accumulated depreciation | ​ |  | (13,146) | ​ |  | (11,821)
Property and equipment, net | ​ | $ | 13,241 | ​ | $ | 12,559
​ Depreciation and amortization expense totaled $1.3 million and $1.0 million for the years ended December 31, 2024 and 2023, respectively. Property and equipment not in use was $8.3 million and $8.1 million as of December 31, 2024 and 2023, respectively, and is included in the laboratory equipment in the table above. These assets are not depreciated until they are placed in service. ​ Other Receivables Other receivables as of December 31, 2024 and 2023 consisted of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024 |  | December 31, 2023
Tenant improvement allowance receivable (Note 12) | ​ | $ | — | ​ | $ | 1,835
Grant and award receivable (Note 13) | ​ | ​ | 744 | ​ | ​ | 1,528
​ | ​ | $ | 744 | ​ | $ | 3,363
​ Accounts Payable and Accrued Liabilities Accounts payable and accrued liabilities as of December 31, 2024 and 2023 consisted of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2024 |  | December 31, 2023
Accounts payable | ​ | $ | 766 | ​ | $ | 1,585
Accrued clinical trial expenses | ​ | ​ | 828 | ​ | ​ | 3,021
Other accrued expenses | ​ | ​ | 461 | ​ | ​ | 1,083
​ | ​ | $ | 2,055 | ​ | $ | 5,689
​

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