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STOCK-BASED COMPENSATION AWARDS (Tables)
9 Months Ended
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):

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Three months ended September 30, 

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Nine months ended September 30, 

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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