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Accrued Expenses and Other Current Liabilities (Tables)
 12 Months Ended
Dec. 31, 2023
Payables and Accruals [Abstract]  
Schedule of Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following as of (in thousands):
 
    
December 31,
  
    
2023
     
2022
  
Accrued external research and development
   
$
3,578
 
    $ 4,077  
Accrued compensation and related expenses
   
 
3,003
 
      2,791  
Accrued taxes payable
   
 
316
 
      570  
Operating
lease liability
, current
   
 
538
 
      471  
Accrued professional services and other
   
 
2,328
 
      1,588  
  
 
 
     
 
 
  
Total accrued expenses and other current liabilities
   
$
9,763
 
    $ 9,497