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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Payroll and employee-related expenses $ 295 $ 371
Third-party research and development expenses 2,260 3,195
Professional fees 184 677
Loan interest 112 227
Other 19 10
Total accrued expenses $ 2,870 $ 4,480