February 3, 2020 Brian Wong, M.D., Ph.D. Chief Executive Officer RAPT Therapeutics, Inc. 561 Eccles Avenue South San Francisco, CA 94080 Re: RAPT Therapeutics, Inc. Draft Registration Statement on Form S-1 Filed January 28, 2020 CIK No. 0001673772 Dear Dr. Wong: This is to advise you that we do not intend to review your registration statement. We request that you publicly file your registration statement no later than 48 hours prior to the requested effective date and time. 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 Paul Fischer at 202-551-3415 with any questions. Sincerely, Division of Corporation Finance Office of Life Sciences cc: Ryan James, Esq.