v3.25.2
Segments - Summary of the Segment Profit or Loss, Including Significant Segment Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Segment Reporting Information [Line Items]            
Segment expenses $ 1,573,669   $ 27,839   $ 1,606,155 $ 58,643
Net loss (1,573,669) $ (32,486) (27,839) $ (30,804) (1,606,155) (58,643)
Trem-cel            
Segment Reporting Information [Line Items]            
Segment expenses 3,095   3,619   9,477 8,480
VCAR33            
Segment Reporting Information [Line Items]            
Segment expenses 2,419   1,762   6,055 4,362
Other Research and Development            
Segment Reporting Information [Line Items]            
Segment expenses 225,144   3,177   228,139 6,294
Salaries and Benefits            
Segment Reporting Information [Line Items]            
Segment expenses 17,863   10,404   29,476 22,517
General Corporate Activities            
Segment Reporting Information [Line Items]            
Segment expenses 16,694   4,947   21,863 10,246
Other Segment Items            
Segment Reporting Information [Line Items]            
Segment expenses $ 1,308,454   $ 3,930   $ 1,311,145 $ 6,744