EX-23.1 2 dex231.htm CONSENT OF INDEPENDENT PUBLIC REGISTERED ACCOUNTING FIRM

Consent of Independent Public Registered Accounting Firm

Exhibit 23.1

[Letterhead of Rose, Snyder & Jacobs]

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference, in this Amendment No. 1 to Registration Statement on Form S-1 of our report dated December 15, 2008, with respect to the 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, 2008, and to the reference to our Firm under the caption “Experts” in the Prospectus.

/s/ Rose, Snyder & Jacobs

Rose, Snyder & Jacobs

A Corporation of Certified Public Accounts

Encino, California

August 26, 2009