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Supplemental Financial Information (Tables)
3 Months Ended
Mar. 31, 2022
Supplemental Financial Information [Abstract]  
Schedule of Prepaid Expenses and Other Current Assets
Prepaid expenses and other current assets consisted of the following (in thousands):
 
     
                        
     
                        
 
 
  
March 31, 2022
 
  
December 31, 2021
 
Research and development service agreements
   $ 1,653      $ 2,591  
Prepaid insurance
     749        1,514  
Dues and subscriptions
     158        96  
Prepaid raw materials
     333        83  
Other
     115        140  
    
 
 
    
 
 
 
Total prepaid expenses and other current assets
   $ 3,008      $ 4,424  
    
 
 
    
 
 
 
Schedule of Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):
 
     
                        
     
                        
 
 
  
March 31, 2022
 
  
December 31, 2021
 
Research and development
   $ 1,638      $ 2,623  
Bonuses and other employee liabilities
     541        1,102  
Legal
     294        130  
Professional fees
 
 
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Other
     99        204  
    
 
 
    
 
 
 
Total accrued expenses and other current li
a
bilities
   $ 2,578      $ 4,059