497 1 d473200d497.htm MET INVESTORS SERIES TRUST - MFS RESEARCH INTERNATIONAL PORTFOLIO Met Investors Series Trust - MFS Research International Portfolio


5 Park Plaza, Suite 1900

Irvine, California 92614


February 15, 2013

EDGAR Operations Branch

Division of Investment Management

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549


Re: Met Investors Series Trust (the “Trust”)

Files No. 333-48456

CIK – 0001126087

Ladies and Gentlemen:

Pursuant to Rule 497 under the Securities Act of 1933, enclosed is the interactive data file that mirrors the risk/return summary information in the supplement dated January 25, 2013 to the prospectus dated April 30, 2012 for the MFS® Research International Portfolio, a series of the Trust, filed under Rule 497(e) on January 25, 2013.

Any questions or comments with respect to this filing may be directed to the undersigned at (617) 578-4036.


Very truly yours,
/s/ Michael P. Lawlor
Michael P. Lawlor


cc: John L. Chilton, Esq.