July 8, 2024

Thane Wettig
Chief Executive Officer
FibroGen, Inc.
409 Illinois Street
San Francisco, California 94158

       Re: FibroGen, Inc.
           Registration Statement on Form S-3
           Filed June 28, 2024
           File No. 333-280597
Dear Thane Wettig:

       This is to advise you that we have not reviewed and will not review your
registration
statement.

       Please refer to Rules 460 and 461 regarding requests for acceleration.
We remind you that
the company and its management are responsible for the accuracy and adequacy of
their
disclosures, notwithstanding any review, comments, action or absence of action
by the staff.

       Please contact Daniel Crawford at 202-551-7767 with any questions.



                                                           Sincerely,

                                                           Division of
Corporation Finance
                                                           Office of Life
Sciences
cc:   John McKenna, Esq.