February 8, 2019

Chen Schor
President and Chief Executive Officer
resTORbio, Inc.
500 Boylston Street, 12th Floor
Boston, Massachusetts 02116

       Re: resTORbio, Inc.
           Registration Statement on Form S-3
           Filed February 1, 2019
           File No. 333-229499

Dear Mr. Schor:

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

        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 Todd Schiffman at 202-551-3491 with any questions.


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