Quarterly report pursuant to Section 13 or 15(d)

SCHEDULE OF STOCK BASED COMPENSATION (Details)

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SCHEDULE OF STOCK BASED COMPENSATION (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Stock based compensation expense $ 862 $ 1,950
Research and Development Expense [Member]    
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Stock based compensation expense 372 1,155
General and Administrative Expense [Member]    
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]    
Stock based compensation expense $ 490 $ 795