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Accrued Expenses and Other Current Liabilities
 6 Months Ended
Jun. 30, 2021
Payables and Accruals [Abstract]  
Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current LiabilitiesThe following table presents the composition of accrued expenses and other current liabilities as of June 30, 2021 and December 31, 2020 (in thousands):
As of June 30,
2021		As of December 31,
2020
Accrued clinical and related costs$3,921 $2,753 
Accrued compensation and related costs1,483 2,260 
Accrued interest52 69 
Current portion of operating lease liability476 459 
Accrued other476 390 
Accrued expenses and other current liabilities$6,408 $5,931