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GENERAL (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2013
Nov. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]          
Net loss $ 34,203 $ 29,698 $ 27,337    
Accumulated deficit 422,079 387,876      
Net cash used in operating activities $ 22,750 $ 28,320 $ 27,888    
Percentage of workforce reduction from restructuring activities 35.00%        
Research and Development Collaboration and Licensing Agreement          
Upfront payment received $ 10,000     $ 10,000  
Accrued milestone payment 8,000        
Potential milestone compensation 200,000     250,000  
Preclinical milestone compensation       $ 23,000  
Amount of investment in Compugen $ 12,000       $ 20,000