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Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Payables and Accruals [Abstract] |  |
Accrued clinical expenses | $ 2,522 | $ 2,197
Accrued contract manufacturing expenses | 2,485 | 1,840
Derivative liability for exit fee | 698 | 1,376
Accrued professional and consulting services | 597 | 243
Accrued sales and marketing expenses | 256 | 593
Accrued interest expense | 203 | 123
Other | 605 | 285
Accrued liabilities and other liabilities | $ 7,366 | $ 6,657

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