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Subsequent Event | 12 Months Ended
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Dec. 31, 2023
Subsequent Events [Abstract] |
Subsequent Event | 18. Subsequent Event On February 23, 2024, the Company and AstraZeneca entered into an agreement to terminate the AstraZeneca U.S./RoW Agreement dated July 30, 2013 (as amended). Pursuant to the termination and transition agreement, AstraZeneca is returning all of their non-China roxadustat rights to the Company, with the exception of South Korea, and providing certain assistance during a transition period. The Company’s collaboration agreement with AstraZeneca for roxadustat in China remains in place. As a part of this termination and transition agreement, the Company and AstraZeneca will settle the outstanding balances relating to past transactions related to manufacturing and AstraZeneca will receive tiered mid-single digit royalties on FibroGen’s sales of roxadustat in the terminated territories, or thirty-five percent of all revenue FibroGen receives if it licenses or sells such rights to a third-party. Neither party incurred any early termination penalties. The Company is currently evaluating the accounting impact of this transaction as it relates to the first quarter of 2024.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//855/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 855 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483399/855-10-50-2 + Details
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