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Accrued Expenses and Other Current Liabilities
3 Months Ended
Mar. 31, 2023
Accrued Expenses and Other Current Liabilities [Abstract]  
Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current LiabilitiesAccrued expenses and other current liabilities consisted of the following at March 31, 2023 and December 31, 2022 (in thousands):
March 31,
2023
December 31,
2022
Employee compensation and benefits$2,049 $5,063 
External research and development expenses4,057 1,157 
General and administrative professional service expenses837 925 
Accrued income tax liability3,551 — 
Other1,182 431 
Total accrued expenses and other current liabilities$11,676$7,576