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Stock-based compensation (Tables)
 9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of stock-based compensation expense
Stock-based compensation expense for the three and nine months ended September 30, 2024 and 2023 was classified in the Company’s condensed consolidated statement of operations and comprehensive loss as follows (in thousands):
 Three Months Ended September 30,Nine Months Ended September 30,
 2024202320242023
Stock-based compensation expense:  
Research and development$3,341 $3,906 $8,043 $9,133 
General and administrative5,490 4,294 13,384 11,743 
Total stock-based compensation expense$8,831 $8,200 $21,427 $20,876