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Related Party Transactions (Details)	1 Months Ended	12 Months Ended
	Jun. 30, 2023 shares	Dec. 31, 2024 USD ($) item	Dec. 31, 2020 shares
Xencor
Related Party Transactions
Reimbursable costs | $		$ 0
Xencor | Related party
Related Party Transactions
Number of antibody product candidates | item		3
Number of license agreements | item		2
Equity interest held (in percent)		7.40%
Xencor | Related party | Series A convertible preferred stock
Related Party Transactions
Number of preferred stock issued | shares			5,041,542
Xencor | Related party | Series B convertible preferred stock
Related Party Transactions
Number of preferred stock issued | shares	4,189,955
Viridian | Related party
Related Party Transactions
Number of common stock issued | shares			38,707
Viridian | Related party | Maximum
Related Party Transactions
Ownership percentage by related party		0.10%
Viridian | Related party | Fairmount Funds Management LLC
Related Party Transactions
Number of seats held in board | item		2
Viridian | Related party | Fairmount Funds Management LLC | Maximum
Related Party Transactions
Ownership percentage by related party		5.00%
Dianthus | Related party
Related Party Transactions
Number of antibody product candidates | item		2
Number of common stock issued | shares			18,063
Dianthus | Related party | Maximum
Related Party Transactions
Ownership percentage by related party		0.10%

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