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STOCK-BASED COMPENSATION (Tables)
12 Months Ended
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-Based Compensation Expense
The following table shows total stock-based compensation expense recognized in the accompanying Consolidated Statements of Operations (in thousands):
Year Ended December 31,
20242023
Research and development$5,698 $15,215 
General and administrative6,684 12,148 
Total stock-based compensation expense$12,382 $27,363 
Schedule of Assumptions used for Estimating Fair Value of Employee Stock Options The
assumptions used for estimating the fair value of the employee stock options were as follows:
Year Ended December 31,
20242023
Risk-free interest rate
4.35%
3.44-4.00%
Expected term (in years)5.36
5.47-5.56
Expected dividend yield of stock— — 
Expected volatility
82.98%
72.18-76.05%
Schedule of Assumptions used for Estimating the Fair Value of the ESPP Purchase Rights
The assumptions used for estimating the fair value of the ESPP purchase rights are as follows:
Year Ended December 31,
20242023
Risk-free interest rate
4.13-5.32%
4.28-5.37%
Expected term (in years)
0.5-2.0
0.5-2.0
Expected dividend yield of stock— — 
Expected volatility
99.27-153.06%
65.71-100.60%