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Related-Party Transactions
 9 Months Ended
Sep. 30, 2024
Related Party Transactions [Abstract]  
Related-Party Transactions Related-Party Transactions
The Company has outstanding licensing and scientific research agreements with the University of Pennsylvania (Penn), a significant stockholder as of September 30, 2023. As of December 31, 2023, Penn was no longer a significant stockholder. The Company recognized $0.3 million and $0.6 million of research and development expenses for the three and nine months ended September 30, 2023 related to the Penn License Agreement.
The Company has a collaboration and license agreement with Moderna, a significant stockholder (Note 10).