497 1 a13-2623_23497.htm 497

 

MORGAN STANLEY MORTGAGE SECURITIES TRUST

522 Fifth Avenue

New York, New York 10036

 

VIA EDGAR

 

January 22, 2013

 

Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

 

Re:          Morgan Stanley Mortgage Securities Trust

File Nos. 33-10363; 811-04917

 

Ladies and Gentlemen:

 

On behalf of Morgan Stanley Mortgage Securities Trust (“Registrant”), we hereby submit for filing pursuant to Rule 497(e) under the Securities Act of 1933, as amended, exhibits containing interactive data format risk/return summary information for the Registrant. These exhibits contain the risk/return summary information in the prospectus for the Registrant dated February 29, 2012. The purpose of this filing is to submit the XBRL information from the 497(e) filing dated January 14, 2013 for the Registrant.

 

If you have any questions, please feel free to contact me at 212.296.6983 (tel.) or 646.452.4799 (fax).

 

 

 

 

Very truly yours,

 

 

 

 

 

/s/ Tara Farrelly

 

 

Tara Farrelly

 

 

Assistant Secretary

 

Enclosures

cc:  Stefanie V. Chang Yu, Esq.