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Related Party Transactions (Tables)
 6 Months Ended
Jun. 30, 2024
Related Party Transactions [Abstract]  
Expenses related to Related Party which were Settled in Cash
The following is the summary of expenses related to the Paragon Agreement and License Agreements, which were ultimately settled in cash (in millions) and recorded within Research and development in the consolidated statement of operations for the periods presented:
Three Months Ended
June 30,		Six Months Ended
June 30,
2024202320242023
Reimbursable costs under the Paragon Agreement$2.3 $1.2 $14.0 $1.2 
License Agreements milestone and sublicensing fees5.6 — 5.6 — 
Total related party expense$7.9 $1.2 $19.6 $1.2 
Related Party Accounts Payable
The following is the summary of Related party accounts payable and other current liabilities (in millions):
June 30,
2024		December 31,
2023
Reimbursable costs under the Paragon Agreement$1.2 $16.6 
Parapyre warrants liability6.9 — 
License Agreements development milestone liability (see Note 7)2.5 — 
Total related party accounts payable$10.6 $16.6