Deutsche Investment Management Americas Inc.

One Beacon Street

Boston, MA 02108

February 4, 2013

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC  20549

RE: DWS Capital Growth Fund, DWS Core Equity Fund, DWS Mid Cap Growth Fund, DWS Small Cap Core Fund and DWS Small Cap Growth Fund (the “Funds”), each a series of DWS Investment Trust (the “Trust”); (Reg. Nos. 002-13628, 811-00043)

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, the Trust hereby certifies that the form of Prospectus and Statement of Additional Information that would have been filed on behalf of the Funds pursuant to Rule 497(c) upon the effectiveness of Post-Effective Amendment No. 194 to the Trust’s Registration Statement on Form N-1A (the “Amendment”) would not have differed from that contained in the Amendment, which is the most recent amendment to such Registration Statement relating to the Funds and was filed electronically on January 28, 2013.

Any comments or questions on this filing should be directed to the undersigned at (617) 295-3986.

Very truly yours,

/s/Scott D. Hogan

Scott D. Hogan

Vice President

Deutsche Investment Management Americas Inc.

cc:           Elizabeth Reza, Esq., Ropes & Gray