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Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2022
Payables and Accruals [Abstract]  
Schedule of Accrued Expenses
Accrued expenses consisted of the following (in thousands):
 December 31,
 20222021
Accrued external research and development expenses$10,734 $17,763 
Accrued personnel-related expenses2,803 7,180 
Accrued other expenses2,313 1,901 
Total accrued expenses$15,850 $26,844