With respect to the forward-looking statements contained in this news release, Tekmira has made numerous assumptions regarding, among other things: the potential of Marqibo to be a safe and effective alternative for the treatment of adult relapsed ALL compared to existing therapies and Tekmira's entitlement to receive milestone and royalty payments based on the successful development and commercialization of Talon's Marqibo, Brakiva, and Alocrest product candidates. While Tekmira considers these assumptions to be reasonable, these assumptions are inherently subject to significant business, economic, competitive, market and social uncertainties and contingencies.

Additionally, there are known and unknown risk factors which could cause Tekmira's actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements contained herein. Known risk factors include, among others: the possibility that Marqibo might not prove to be a safe and effective alternative for the treatment of adult relapsed ALL compared to existing therapies; Marqibo will not be accepted in the marketplace; Talon will not be able to develop adequate marketing and distribution capabilities; Talon will not be able to secure the additional capital necessary to fund its product development and commercialization programs; Tekmira may not receive milestone and royalty payments based on the successful development and commercialization of Talon's Marqibo, Brakiva, and Alocrest product candidates; and Tekmira's development programs will not result in expected results on a timely basis, or at all.

A more complete discussion of the risks and uncertainties facing Tekmira appears in Tekmira's Annual Information Form dated March 30, 2011 and available at www.sedar.com or at www.sec.gov/edgar. All forward-looking statements herein are qualified in their entirety by this cautionary statement, and Tekmira disclaims any obligation to revise or update any such forward-looking statements or to publicly announce the result of any revisions to any of the forward-looking statements contained herein to reflect future results, events or developments, except as required by law.

Marqibo is a U.S. registered trademark of Talon Therapeutics, Inc.
CONTACT:  Investors          Jodi Regts          Director, Investor Relations          Phone: 604-419-3234          Email: jregts@tekmirapharm.com          Media          David Ryan           Longview Communications Inc.           Phone: 416-649-8007          Email: dryan@longviewcomms.ca

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