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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2022
Share-based Payment Arrangement [Abstract]  
Summary of Stock-Based Compensation Expense
Stock-based compensation expense was classified in the condensed consolidated statements of operations and comprehensive loss as follows (in thousands):
Three Months Ended March 31,
20222021
Research and development expenses$1,509 $1,014 
General and administrative expenses1,735 874 
$3,244 $1,888