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Related Party Transactions
 12 Months Ended
Dec. 31, 2022
Related Party Transactions  
Related Party Transactions

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14.

Related Party Transactions

Consulting services

In October 2020, the Company entered into a consulting agreement with Lanfear Advisors owned by Mr. Jonathan Lanfear who is the brother of Dennis Lanfear, the Company’s President, Chief Executive Officer and Chairman of the Board of Directors. Mr. Jonathan Lanfear provided consulting services with respect to the Collaboration Agreement executed with Junshi Biosciences in February 2021 and the Letter Agreement with Junshi Biosciences related to the Collaboration Agreement dated January 9, 2022 (See Note 6. Collaborations and Other Arrangements). In addition to the hourly consulting fee paid to Lanfear Advisors under the consulting agreement, the Company granted fully vested stock options to purchase 65,000 shares of common stock with an exercise price of $17.60 per share to Mr. Jonathan Lanfear in February 2021 upon the execution of the Collaboration Agreement with Junshi Biosciences and recognized stock-based compensation expense of $0.8 million. The Company recorded cash consulting expense of $0.2 million and $0.3 million in 2021 and 2020, respectively, with respect to these consulting services. There have been no subsequent material related party expenses. Total liabilities recognized in the consolidated balance sheets with respect to these services were immaterial as of December 31, 2022 and 2021.