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Other Current Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Other Current Liabilities |  |
Accrued R&D related costs | $ 4,310 | $ 609
Accrued employee bonuses | 2,111 | 1,222
Accrued professional fees | 960 | 577
Accrued payroll related costs | 654 | 444
Early exercise of unvested options | 237 | 578
Accrued taxes | 67 | 198
Other | 256 | 238
Total | $ 8,595 | $ 3,866

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