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ACCRUED EXPENSES (Tables) | 12 Months Ended
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Dec. 31, 2021
Payables and Accruals [Abstract] |
Components of Accrued Expenses | The following table sets forth the composition of accrued expenses as of December 31, 2021 and 2020 (in thousands):
| December 31,
| 2021 |  | 2020
Research and development | $ | 1,841 |  |  | $ | 1,372 |
Payroll-related expenses | 2,967 |  |  | 1,892 |
Restructuring charge related | 1,497 |  |  | — |
Professional fees | 1,941 |  |  | 684 |
Other | 9 |  |  | 25 |
Total Accrued Expenses | $ | 8,255 |  |  | $ | 3,973 |

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