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Prepaid Expenses and Other Current Assets
 6 Months Ended
Jun. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Prepaid Expenses And Other Current Assets
(4)
Prepaid Expenses and Other Current Assets
Prepaid expenses and other current assets consist of the following (in thousands):
 
    
June 30,
2022
     
December 31,
2021
  
Clinical trial expenses
    $ 1,630      $ 1,630  
Insurance premiums
      400        890  
Professional services
      154        15  
Other
      186        208  
    
 
 
     
 
 
  
Total prepaid expenses and other current assets
    $ 2,370      $ 2,743