EXHIBIT 24.1 POWER OF ATTORNEY March 9, 2012 Know all men by these presents, that each of Becker Drapkin Management, L.P., Becker Drapkin Partners (QP), L.P., Becker Drapkin Partners, L.P., BC Advisors, LLC, Steven R. Becker and Matthew A. Drapkin hereby constitutes and appoints Ashley Sekimoto, as the true and lawful attorney-in-fact and agent of such party with full power and authority and full power of substitution and resubstitution, for, in the name of, and on behalf of such party, place and stead, in any and all capacities, (i) to execute any and all filings required by such party under Section 13 or Section 16 of the Securities Exchange Act of 1934, as amended (the "Exchange Act") (or any similar rule with respect to foreign exchanges) or any rule or regulation thereunder (including any amendment, supplement, and/or exhibit thereto), for, in the name of, and on behalf of such party, (ii) to do and perform any and all acts for, in the name of, and on behalf of such party which said attorney-in-fact determines may be necessary or appropriate to complete and execute any and all such filings, amendments, supplements and/or exhibits and any and all other document(s) in connection therewith, (iii) to file such filings, amendments, supplements, exhibits and/or documents with any governmental office or agency, whether U.S., foreign, state or local government (including, without limitation, the U.S. Securities and Exchange Commission and state securities administrators or commissions), or any stock exchange or stock quotation system, as may be required under applicable laws or rules and regulations of any stock exchange or stock quotation system, and (iv) to perform any and all other acts that said attorney-in-fact or agent determines may be necessary or appropriate in connection with the foregoing that may be in the best interest of or legally required by such party, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite or necessary to be done in and about the premises, as fully to all intents and purposes as such party might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent shall do or cause to be done by virtue hereof. Each of Becker Drapkin Management, L.P., Becker Drapkin Partners (QP), L.P., Becker Drapkin Partners, L.P., BC Advisors, LLC, Steven R. Becker and Matthew A. Drapkin hereby acknowledges that the foregoing attorney-in-fact and agent in serving in such capacity at the request of such party, is not assuming any of the responsibilities of such party to comply with Section 16 or Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. This Power of Attorney shall remain in full force and effect until each of Becker Drapkin Management, L.P., Becker Drapkin Partners (QP), L.P., Becker Drapkin Partners, L.P., BC Advisors, LLC, Steven R. Becker and Matthew A. Drapkin is no longer required to file reports under Section 13 or Section 16 of the Exchange Act (or any similar rule with respect to foreign exchanges) or any rule or regulation thereunder (including any amendment, supplement, and/or exhibit thereto), unless earlier revoked by any of Becker Drapkin Management, L.P., Becker Drapkin Partners (QP), L.P., Becker Drapkin Partners, L.P., BC Advisors, LLC, Steven R. Becker or Matthew A. Drapkin in a signed writing delivered to Ashley Sekimoto. IN WITNESS WHEREOF, each party hereto has caused this agreement to be executed and effective as of the date first written above. Date: March 9, 2012 BECKER DRAPKIN MANAGEMENT, L.P. By: BC Advisors, LLC Its: General Partner By: /s/ Steven R. Becker ----------------------------------- Name: Steven R. Becker Title: Managing Member BECKER DRAPKIN PARTNERS (QP), L.P. By: Becker Drapkin Management, L.P. Its: General Partner By: BC Advisors, LLC Its: General Partner By: /s/ Steven R. Becker ----------------------------------- Name: Steven R. Becker Title: Managing Member BECKER DRAPKIN PARTNERS, L.P. By: Becker Drapkin Management, L.P. Its: General Partner By: BC Advisors, LLC Its: General Partner By: /s/ Steven R. Becker ----------------------------------- Name: Steven R. Becker Title: Managing Member BC ADVISORS, LLC By: /s/ Steven R. Becker ----------------------------------- Name: Steven R. Becker Title: Managing Member STEVEN R. BECKER /s/ Steven R. Becker ------------------------------------------ MATTHEW A. DRAPKIN /s/ Matthew A. Drapkin ------------------------------------------
EXHIBIT 99.2 JOINT FILER INFORMATION Other Reporting Person(s) 1. BECKER DRAPKIN PARTNERS (QP), L.P. Item Information Name: BECKER DRAPKIN PARTNERS (QP), L.P. Address: 500 Crescent Court, Suite 230, Dallas, Texas 75201 Designated Filer: Becker Drapkin Management, L.P. Date of Event Requiring Statement March 7, 2012 (Month/Day/Year): Issuer Name and Ticker or Trading Response Genetics, Inc. [RGDX] Symbol: Relationship of Reporting Person(s) 10% Owner to Issuer: If Amendment, Date Original Filed Not Applicable (Month/Day/Year): Individual or Joint/Group Filing: Form filed by More than One Reporting Person Signature: By: Becker Drapkin Management, L.P. Its: General Partner By: BC Advisors, LLC Its: General Partner By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012 2. BECKER DRAPKIN PARTNERS, L.P. Item Information Name: BECKER DRAPKIN PARTNERS, L.P. Address: 500 Crescent Court, Suite 230, Dallas, Texas 75201 Designated Filer: Becker Drapkin Management, L.P. Date of Event Requiring Statement March 7, 2012 (Month/Day/Year): Issuer Name and Ticker or Trading Response Genetics, Inc. [RGDX] Symbol: Relationship of Reporting Person(s) 10% Owner to Issuer: If Amendment, Date Original Filed Not Applicable (Month/Day/Year): Individual or Joint/Group Filing: Form filed by More than One Reporting Person Signature: By: Becker Drapkin Management, L.P. Its: General Partner By: BC Advisors, LLC Its: General Partner By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012 3. BC ADVISORS, LLC Item Information Name: BC ADVISORS, LLC Address: 500 Crescent Court, Suite 230, Dallas, Texas 75201 Designated Filer: Becker Drapkin Management, L.P. Date of Event Requiring Statement March 7, 2012 (Month/Day/Year): Issuer Name and Ticker or Trading Response Genetics, Inc. [RGDX] Symbol: Relationship of Reporting Person(s) 10% Owner to Issuer: If Amendment, Date Original Filed Not Applicable (Month/Day/Year): Individual or Joint/Group Filing: Form filed by More than One Reporting Person Signature: By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012 4. STEVEN R. BECKER Item Information Name: STEVEN R. BECKER Address: 500 Crescent Court, Suite 230, Dallas, Texas 75201 Designated Filer: Becker Drapkin Management, L.P. Date of Event Requiring Statement March 7, 2012 (Month/Day/Year): Issuer Name and Ticker or Trading Response Genetics, Inc. [RGDX] Symbol: Relationship of Reporting 10% Owner Person(s) to Issuer: If Amendment, Date Original Filed Not Applicable (Month/Day/Year): Individual or Joint/Group Filing: Form filed by More than One Reporting Person Signature: By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012 5. MATTHEW A. DRAPKIN Item Information Name: MATTHEW A. DRAPKIN Address: 500 Crescent Court, Suite 230, Dallas, Texas 75201 Designated Filer: Becker Drapkin Management, L.P. Date of Event Requiring Statement March 7, 2012 (Month/Day/Year): Issuer Name and Ticker or Trading Response Genetics, Inc. [RGDX] Symbol: Relationship of Reporting 10% Owner Person(s) to Issuer: If Amendment, Date Original Filed Not Applicable (Month/Day/Year): Individual or Joint/Group Filing: Form filed by More than One Reporting Person Signature: By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012
EXHIBIT 99.3 JOINT FILING AGREEMENT March 9, 2012 Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Exchange Act or any rule or regulation thereunder (including any amendment, restatement, supplement, and/or exhibit thereto) with the Securities and Exchange Commission (and, if such security is registered on a national securities exchange, also with the exchange), and further agrees to the filing, furnishing, and/or incorporation by reference of this agreement as an exhibit thereto. This agreement shall remain in full force and effect until revoked by any party hereto in a signed writing provided to each other party hereto, and then only with respect to such revoking party. IN WITNESS WHEREOF, each party hereto, being duly authorized, has caused this agreement to be executed and effective as of the date first written above. Date: March 9, 2012 BECKER DRAPKIN MANAGEMENT, L.P. By: BC Advisors, LLC Its: General Partner By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact BECKER DRAPKIN PARTNERS (QP), L.P. By: Becker Drapkin Management, L.P. Its: General Partner By: BC Advisors, LLC Its: General Partner By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact BECKER DRAPKIN PARTNERS, L.P. By: Becker Drapkin Management, L.P. Its: General Partner By: BC Advisors, LLC Its: General Partner By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact BC ADVISORS, LLC By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact STEVEN R. BECKER /s/ Ashley Sekimoto ------------------------------------------ Name: Ashley Sekimoto Title: Attorney-in-Fact MATTHEW A. DRAPKIN /s/ Ashley Sekimoto ------------------------------------------ Name: Ashley Sekimoto Title: Attorney-in-Fact
EXHIBIT 99.1 SIGNATURES BECKER DRAPKIN MANAGEMENT, L.P. By: BC Advisors, LLC Its: General Partner By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012 BECKER DRAPKIN PARTNERS (QP), L.P. By: Becker Drapkin Management, L.P. Its: General Partner By: BC Advisors, LLC Its: General Partner By: /s/ Ashley Sekimoto --------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012 BECKER DRAPKIN PARTNERS, L.P. By: Becker Drapkin Management, L.P. Its: General Partner By: BC Advisors, LLC Its: General Partner By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012 BC ADVISORS, LLC By: /s/ Ashley Sekimoto ----------------------------------- Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012 STEVEN R. BECKER /s/ Ashley Sekimoto ------------------------------------------ Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012 MATTHEW A. DRAPKIN /s/ Ashley Sekimoto ------------------------------------------ Name: Ashley Sekimoto Title: Attorney-in-Fact Date: March 9, 2012