Curis (CRIS) 10-Q 2005 Q2 Quarterly report

EXHIBIT 32.2

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO RULE 13A-14(b) OF THE EXCHANGE ACT AND 18 U.S.C. SECTION 1350.

In connection with the Quarterly Report on Form 10-Q of Curis, Inc. (the “Company”) for the period ended June 30, 2005 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, Michael P. Gray, Vice President of Finance and Chief Financial Officer of the Company, hereby certifies, pursuant to 18 U.S.C. Section 1350, that:

(1)  The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: August 9, 2005

/s/    MICHAEL P. GRAY

Michael P. Gray

Vice President of Finance and

Chief Financial Officer

(Principal Financial and Accounting Officer)