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Prepaid Expenses, Other Current Assets and Other Noncurrent Assets (Tables)
 12 Months Ended
Dec. 31, 2023
Prepaid Expense and Other Assets, Current [Abstract]  
Summary Of Prepaid Expenses And Other Current Assets
Prepaid expenses and other current assets consisted of the following as of (in thousands):
 
    
December 31,
  
    
2023
     
2022
  
Payroll tax credit
   
$
755
 
    $ 948  
Prepaid external research and development
   
 
1,834
 
      1,329  
Research credit receivable
   
 
— 
 
      116  
Prepaid expenses
   
 
427
 
      421  
Other
   
 
83
 
      146  
  
 
 
     
 
 
  
Total prepaid expenses and other current assets
   
$
3,099
 
   
$
2,960
 
  
 
 
     
 
 
  
Summary Of Prepaid Expenses And Other Nonurrent Assets
Other noncurrent assets consisted of the following as of (in thousands):
 
    
December 31,
  
    
2023
     
2022
  
Deferred transaction costs
   
$
3,912
 
    $ —  
Prepaid external research and development—long term
   
 
676
 
      —  
Other
   
 
23
 
      108  
  
 
 
     
 
 
  
Total other noncurrent assets
   
$
4,611
 
   
$
108