EXHIBIT 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference, in this Registration Statement on Form S-3 of our report dated December 17, 2010, with respect to the consolidated financial statements of Arrowhead Research Corporation and Subsidiaries appearing in the Company’s Annual Report on Form 10-K for the year ended September 30, 2010, and to the reference of our Firm under the caption “Experts” in the Registration Statement.
/s/ Rose, Snyder & Jacobs
Rose, Snyder & Jacobs
A Corporation of Certified Public Accountants
Encino, California
November 16, 2011