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Related Party Transactions
 9 Months Ended
Sep. 30, 2025
Related Party Transactions  
Related Party Transactions

8.

Related Party Transactions

Foresite Labs Services Agreement

Foresite Labs, LLC (“Foresite Labs”) is an affiliate of Foresite Capital Management, a stockholder of the Company. In January 2021, the Company entered into a services agreement with Foresite Labs, which was amended and restated in August 2021 and in December 2023, and expires in December 2026, unless terminated earlier by the parties. Thereafter, on each anniversary of the effective date, the agreement will automatically renew for an additional one-year term, unless terminated earlier by the parties. Foresite Labs provides services to assist the Company in exploring specified immunology genetic targets. For the three months ended September 30, 2025 and 2024, the Company recognized $0.3 million and $0.2 million as research and development expenses under the service agreement, respectively. For the nine months ended September 30, 2025 and 2024, the Company recognized $0.8 million and $0.7 million as research and development expenses under the services agreement, respectively. Accrued expenses under the service agreement were zero as of September 30, 2025 and December 31, 2024.