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Selected Balance Sheet Information | 12 Months Ended
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Dec. 31, 2023
Selected Balance Sheet Information |
Selected Balance Sheet Information | 7. Selected Balance Sheet Information PREPAID EXPENSES AND OTHER CURRENT ASSETS (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2023 | ​ | 2022
Prepaid clinical research organizations | ​ | $ | 1,119 | ​ | $ | 2,293
Prepaid insurance | ​ | ​ | 496 | ​ | ​ | 637
Prepaid manufacturing expenses | ​ | ​ | 491 | ​ | ​ | 418
Prepaid consulting, subscriptions and other expenses | ​ | ​ | 180 | ​ | ​ | 155
VAT receivable | ​ |  | 128 | ​ |  | 87
Receivable from Grifols | ​ |  | — | ​ |  | 144
​ | ​ | ​ | ​ | ​ | ​ | ​
Total prepaid expsnese and other current assets | ​ | $ | 2,414 | ​ | $ | 3,734
​ Prepaid clinical research organizations (CROs) expense is classified as a current asset. The Company makes payments to the CROs based on agreed upon terms that include payments in advance of study services. Receivable from Grifols includes amounts due related to research and development tax rebates, VAT and corporate taxes. PROPERTY AND EQUIPMENT (in thousands) ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2023 | ​ | 2022
Computers and office equipment | ​ | $ | 902 | ​ | $ | 897
Other property, plant and equipment | ​ | ​ | 417 | ​ | ​ | 208
Leasehold improvements | ​ |  | 94 | ​ |  | 94
Software | ​ |  | 11 | ​ |  | 11
​ | ​ |  | 1,424 | ​ |  | 1,210
Less: accumulated depreciation and amortization | ​ |  | (1,002) | ​ |  | (865)
​ | ​ |  |  | ​ |  |
Total property and equipment, net | ​ | $ | 422 | ​ | $ | 345
​ During the years ended December 31, 2023 and 2022 the Company recognized depreciation expense of $135,000 and 85,000 respectively. ​ ACCRUED EXPENSES (in thousands) ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2023 | ​ | 2022
Accrued clinical consulting services | ​ | $ | 1,700 | ​ | $ | 807
Accrued manufacturing costs | ​ | ​ | 843 | ​ | ​ | 197
Accrued vendor payments | ​ | ​ | 452 | ​ | ​ | 492
​ | ​ |  |  | ​ |  |
Total accrued expesnes | ​ | $ | 2,995 | ​ | $ | 1,496
​ 7. Selected Balance Sheet Information – (continued) ACCRUED EMPLOYEE BENEFITS (in thousands) ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | December 31, |  | December 31,
​ | ​ | 2023 | ​ | 2022
Accrued bonus expense | ​ | $ | 1,307 | ​ | $ | 1,216
Accrued compensation expense | ​ |  | 127 | ​ |  | 87
Accrued vacation expense | ​ | ​ | 83 | ​ | ​ | 100
​ | ​ |  |  | ​ | ​ |
Total accrued employee benefits | ​ | $ | 1,517 | ​ | $ | 1,403
​

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- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//210/tableOfContent + Details
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