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Segment Information - Schedule of Significant Expense Categories Included Within Net Loss Presented on the Company’s Condensed Consolidated Statements of Operations and Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Schedule of Significant Expense Categories Included Net Loss Presented on Condensed Consolidated Statements of Operations and Comprehensive Loss [Line Items]    
Personnel-related costs $ 4,038 $ 8,431
General and overhead costs 3,291 3,611
Total program costs 3,623 9,760
Total operating expense 10,952 21,802
Other income, net 9,778 561
Net loss (1,174) (21,241)
Briquilimab platform [Member]    
Schedule of Significant Expense Categories Included Net Loss Presented on Condensed Consolidated Statements of Operations and Comprehensive Loss [Line Items]    
Total program costs 266 1,957
CMO [Member]    
Schedule of Significant Expense Categories Included Net Loss Presented on Condensed Consolidated Statements of Operations and Comprehensive Loss [Line Items]    
Total program costs 882 2,138
CSU [Member]    
Schedule of Significant Expense Categories Included Net Loss Presented on Condensed Consolidated Statements of Operations and Comprehensive Loss [Line Items]    
Total program costs 2,378 2,746
Asthma [Member]    
Schedule of Significant Expense Categories Included Net Loss Presented on Condensed Consolidated Statements of Operations and Comprehensive Loss [Line Items]    
Total program costs (327) 1,393
CIndU [Member]    
Schedule of Significant Expense Categories Included Net Loss Presented on Condensed Consolidated Statements of Operations and Comprehensive Loss [Line Items]    
Total program costs 424 885
SCID [Member]    
Schedule of Significant Expense Categories Included Net Loss Presented on Condensed Consolidated Statements of Operations and Comprehensive Loss [Line Items]    
Total program costs 523
MDS/AML [Member]    
Schedule of Significant Expense Categories Included Net Loss Presented on Condensed Consolidated Statements of Operations and Comprehensive Loss [Line Items]    
Total program costs $ 118