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                                              December 18, 2006




VIA EDGAR

EDGAR Operations Branch
Division of Investment Management
Securities and Exchange Commission
100 F Street, N.E.
Washington, DC 20549


                           Met Investors Series Trust
                      (BlackRock Large-Cap Core Portfolio)
                     -Information Statement on Schedule 14C
                                 CIK 0001126087
                               File No. 811-10183



Ladies and Gentlemen:

     This letter  reflects  responses to oral  comments of Robert  Lamont of the
staff of the Securities and Exchange Commission (the "SEC"), which were received
on December 12, 2006, in connection with the preliminary  information  statement
on Schedule 14C of Met  Investors  Series Trust (the  "Trust"),  relating to its
BlackRock   Large-Cap  Core  Portfolio  (the   "Portfolio"),   which  was  filed
electronically  with the SEC via  EDGAR on  December  5,  2006.  The  definitive
information statement is being filed with the SEC later today.

     Set forth below is each comment and the Trust's response thereto.

1.   Comment:   Include Tandy language in the response letter.

     Response:  The requested language is included at the end of this letter.

2.   Comment:   Please add a few reasons why the Trust's Board of Trustees
                selected BlackRock Advisors, LLC to be the Portfolio's new
                adviser.

     Response:  The requested disclosure has been added.

                                      * * *

     The Trust acknowledges that:

     1)     it is responsible for the adequacy and accuracy of the disclosure in
            its filing of the above-referenced registration statement;

     2)     staff comments or changes to disclosure in response to staff
            comments in the filings reviewed by the staff do not foreclose
            the Securities and Exchange Commission from taking any action
            with respect to the filing; and

     3)     the Trust may not assert staff comments as a defense in any
            proceeding initiated by the Securities and Exchange Commission
            or any person under the federal securities laws of the United
            States.

     Any  questions  or comments  with respect to this filing may be directed to
the undersigned at (202) 775-1213.

                                     Very truly yours,

                                     /s/ John L. Chilton
                                     John L. Chilton

Enclosures

cc:  Elizabeth M. Forget
     Robert N. Hickey, Esq.