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Accrued expenses and other current liabilities
 6 Months Ended
Jun. 30, 2023
Payables and Accruals [Abstract]  
Accrued expenses and other current liabilities Accrued expenses and other current liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):
 June 30,
2023		December 31,
2022
Accrued expenses and other current liabilities:
Accrued research and development$10,168 $9,824 
Accrued compensation and benefits4,235 6,831 
Accrued professional fees870 1,062 
Other1,456 2,052 
Total accrued expenses and other current liabilities$16,729 $19,769