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Accounts payable and other liabilities (Tables)
12 Months Ended
Dec. 31, 2022
Payables and Accruals [Abstract]  
Schedule of Accounts Payable and Other Liabilities
Accounts payable and other liabilities consist of the
following
(in thousands):
 

 
  
December 31,
 
 
  
2022
 
  
2021
 
Trade accounts payable
   $ 478      $ 526  
Accrued clinical and preclinical expenses
     4,360        2,399  
Accrued compensation and vacation
     3,539        3,263  
Other accrued liabilities
     1,170
 
 
     1,227  
    
 
 
    
 
 
 
     $ 9,547      $ 7,415