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STOCK-BASED COMPENSATION AWARDS (Tables) | 9 Months Ended
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Sep. 30, 2022
STOCK-BASED COMPENSATION AWARDS |
Schedule of stock-based compensation expense | Total stock-based compensation expense related to all equity awards granted was allocated as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​ | Nine months ended September 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Research and development | ​ | $ | 1,743 |  | $ | 1,055 |  | $ | 4,152 |  | $ | 1,670
General and administrative | ​ |  | 1,430 | ​ |  | 493 | ​ |  | 3,036 | ​ |  | 861
Total stock-based compensation expense | ​ | $ | 3,173 | ​ | $ | 1,548 | ​ | $ | 7,188 | ​ | $ | 2,531

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