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DETAILED ACCOUNT BALANCES - Summary of Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Accrued compensation $ 775 $ 1,861
Accrued contracted research and development services 446 823
Accrued professional fees 485 452
Total $ 1,706 $ 3,136