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STOCK-BASED COMPENSATION
6 Months Ended
Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]  
STOCK-BASED COMPENSATION STOCK-BASED COMPENSATIONThe following table shows total stock-based compensation expense recognized in the accompanying Condensed Consolidated Statements of Operations (in thousands):
Three Months Ended
June 30,
Six Months Ended
June 30,
2023202220232022
Research and development$3,887 $4,591 $8,760 $9,261 
General and administrative2,903 3,327 6,307 6,348 
Total stock-based compensation expense$6,790 $7,918 $15,067 $15,609