Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

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Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Commitments and Contingencies [Line Items]    
Research and development expense $ 21,954 $ 12,435
Terms agreement description Under the August 2023 work orders, WuXi converted the Company’s non-dedicated suite to a dedicated suite for GMP manufacturing for the Company’s CABA-201 and MuSK-CAART programs, or the Dedicated Suite, for an initial term of 18 months with two 18-month extensions at the Company’s sole option on six months' notice prior to the end of the term.  
Caba201 And Musk Caart [Member]    
Commitments and Contingencies [Line Items]    
Early termination fee $ 1,080  
Wuxi Agreement    
Commitments and Contingencies [Line Items]    
Early termination fee $ 1,500  
Lease expiration month 18 months