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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Payables and Accruals [Abstract]    
Clinical expenses $ 2,267 $ 1,517
Compensation, excluding taxes 1,056 893
Short-term financing 0 551
Professional fees 1,229 603
Interest on convertible note 513 393
Other 72 152
Total accrued expenses $ 5,137 $ 4,109