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RELATED PARTIES (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Related Party Transactions      
Research and development expense $ 12,217 $ 15,935  
Due to related parties 83,940   $ 71,979
LaunchLabs Agreement | Subsidiary whose founder and executive chairman of parent is a member of the Company's board of directors | Alexandria LaunchLabs      
Related Party Transactions      
Research and development expense 33 $ 23  
Due to related parties $ 0   $ 8