<![CDATA[Consent of Rose, Snyder & Jacobs, the registrant's independent registered public]]>

EX-23.1 3 d271952dex231.htm CONSENT OF ROSE, SNYDER & JACOBS, THE REGISTRANT'S INDEPENDENT REGISTERED PUBLIC <![CDATA[Consent of Rose, Snyder & Jacobs, the registrant's independent registered public]]>

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

December 14, 2011