EISTX Massachusetts Investors Growth Stock Fund Share Class - 529A (MM)

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Name	Symbol	Market	Type
Massachusetts Investors Growth Stock Fund Share Class - 529A (MM)	NASDAQ:EISTX	NASDAQ	Fund

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Certification of No Change in Definitive Materials. (497j)

04/04/2013 1:48pm

Edgar (US Regulatory)

111 Huntington Avenue, Boston, Massachusetts 02199

(617) 954-5000

April 4, 2013

VIA EDGAR

United States Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Re:

Massachusetts Investors Growth Stock Fund (the “Fund”) (File Nos. 2-14677 and 811-859)

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, please accept this letter on behalf of the Fund as certification that the Prospectus and Statement of Additional Information for the Fund do not differ from those contained in Post-Effective Amendment No. 90 (the “Amendment”) to the Fund’s Registration Statement on Form N-1A. The Amendment was filed electronically on March 27, 2013.

Please call the undersigned at (617) 954-5843 or Jennifer Moore at (617) 954-5923 with any questions you may have.

Very truly yours,

BRIAN E. LANGENFELD

Brian E. Langenfeld

Vice President & Senior Counsel

BEL/bjn