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Accrued Liabilities (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Accrued Liabilities, Current [Abstract] |  |
Schedule of Accrued Liabilities | Accrued liabilities consist of the following (in thousands):
|  | March 31, 2022 |  |  | December 31, 2021 |
Research and development accrued expenses |  | $ | 12,129 |  |  | $ | 6,626 |
Accrued offering costs |  |  | — |  |  |  | 1,301 |
Accrued bonus |  |  | 793 |  |  |  | 3,429 |
Other liabilities |  |  | 1,478 |  |  |  | 1,824 |
Total accrued liabilities |  | $ | 14,400 |  |  | $ | 13,180 |
| Accrued liabilities consist of the following (in thousands):
|  | December 31, |
|  | 2021 |  |  | 2020 |
Research and development accrued expenses |  | $ | 6,626 |  |  | $ | 2,060 |
Accrued offering costs |  |  | 1,301 |  |  |  | 576 |
Accrued bonus |  |  | 3,429 |  |  |  | 1,113 |
Accrued vacation |  |  | 344 |  |  |  | 249 |
Other liabilities |  |  | 1,480 |  |  |  | 578 |
Total accrued liabilities |  | $ | 13,180 |  |  | $ | 4,576 |

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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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