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STOCK-BASED COMPENSATION (Tables)
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Schedule of Share-Based Compensation Expense
Total stock-based compensation expense reported in the condensed consolidated statements of operations was allocated as follows (in thousands):
Three Months Ended
March 31,
20222021
Research and development$103 $109 
General and administrative448 360 
Total stock-based compensation expense$551 $469