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                              December 18, 2020

       Owen Hughes
       President and Chief Executive Officer
       Cullinan Oncology, LLC
       One Main Street
       Suite 520
       Cambridge, MA 02142

                                                        Re: Cullinan Oncology,
LLC
                                                            Amendment 1 to
Draft Registration Statement on From S-1
                                                            Submitted December
9, 2020
                                                            CIK No. 377-03734

       Dear Mr. Hughes:

             We have reviewed your amended draft registration statement and
have the following
       comments. In some of our comments, we may ask you to provide us with
information so we
       may better understand your disclosure.

              Please respond to this letter by providing the requested
information and either submitting
       an amended draft registration statement or publicly filing your
registration statement on
       EDGAR. If you do not believe our comments apply to your facts and
circumstances or do not
       believe an amendment is appropriate, please tell us why in your
response.

             After reviewing the information you provide in response to these
comments and your
       amended draft registration statement or filed registration statement, we
may have additional
       comments.

       Amendment 1 to Draft Registration Statement on Form S-1 filed December
9, 2020

       Our Pipeline, page 3

   1.                                                   We note your response
to our prior comment 3 regarding your continued inclusion of the
                                                        terminated programs in
your pipeline table. While we understand your view that the
                                                        inclusion of the
terminated programs further demonstrates the company's commitment to
                                                        its business model and
strategy, we note that the efficient allocation of capital resources
                                                        and termination of
candidate programs is not unique to your hub-and-spoke model.
                                                        Additionally,
terminated programs are no longer part of your pipeline and not material to
                                                        your current
operations. For this reason, we request that you remove the terminated
                                                        programs from the
pipeline table.
 Owen Hughes
Cullinan Oncology, LLC
December 18, 2020
Page 2
License Agreements , page 162

2.    We note your response to comment 8. Please further revise the Taiho
license royalty
      range of "low single digit to low teen digit royalty percentages" to
further narrow the
      range to no more than ten parentage points.
3.    Please also revise the description of the royalty termination provision
to quantify the
      number of years following the first commercial sale, as opposed to "low
double digit of
      years following the first commercial sale."
        You may contact Vanessa Robertson at 202-551-3649 or Kevin Vaughn at
202-551-
3494 if you have questions regarding comments on the financial statements and
related
matters. Please contact Laura Crotty at 202-551-7614 or Suzanne Hayes at
202-551-3675 with
any other questions.




                                                            Sincerely,
FirstName LastNameOwen Hughes
                                                            Division of
Corporation Finance
Comapany NameCullinan Oncology, LLC
                                                            Office of Life
Sciences
December 18, 2020 Page 2
cc:       Gabriela Morales-Rivera
FirstName LastName