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Accrued Expenses and Other Current Liabilities
 3 Months Ended
Mar. 31, 2022
Payables and Accruals [Abstract]  
Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities as of March 31, 2022 and December 31, 2021 were comprised as follows (in thousands):
March 31,
2022		December 31,
2021
Manufacturing
$2,700$3,427
Contract research
1,9402,542
Leasehold improvements1,455—
Employee compensation and benefits
1,1482,200
Professional fees
816433
Other
130 163 
Total accrued expenses and other current liabilities
$8,189$8,765