Trubion Pharmaceuticals Inc. to Present at the Lehman Brothers Tenth Annual Global Healthcare Conference

SEATTLE, March 12 /PRNewswire-FirstCall/ -- Trubion Pharmaceuticals, Inc. today announced that Dr. Peter Thompson -- President, Chief Executive Officer and Chairman -- will present an overview of the company at the upcoming Lehman Brothers Tenth Annual Global Healthcare Conference in Miami, Florida. Dr. Thompson is scheduled to present on March 21, 2007 at 8 a.m.

About Trubion

Trubion is a biopharmaceutical company creating a pipeline of product candidates to treat autoimmune disease and cancer. The Company’s product candidates are novel proteins known as single-chain polypeptides and are designed using its SMIP(TM) custom drug assembly technology. In less than 24 months, the Company designed, developed and submitted to the FDA an Investigational New Drug application for its lead product candidate, TRU-015, which is currently being tested in a Phase IIb clinical trial for the treatment of rheumatoid arthritis. In December 2005, the Company entered into a collaboration agreement with Wyeth for the development and worldwide commercialization of certain therapeutics, including TRU-015. In addition, Trubion’s TRU-016 program targets CD37, an antigen present on B cells, for the treatment of non-Hodgkin’s lymphoma and chronic lymphocytic leukemia. Subject to satisfactory completion of preclinical testing of TRU-016, the Company expects to file an IND for TRU-016 in the second half of 2007. Trubion currently retains all development and commercialization rights for the TRU-016 program. For additional information visit www.trubion.com.

Forward-Looking Statements

Certain statements in this release may constitute “forward-looking statements” within the meaning of Section 21E of the Securities Exchange Act of 1934 and Section 27A of the Securities Act of 1933. These statements are based on current expectations and assumptions regarding future events and business performance and involve certain risks and uncertainties that could cause actual results to differ materially. These and other risks are identified in the company’s quarterly report on Form 10-Q for the period ended September 30, 2006 and from time to time in other reports filed by Trubion with the U.S. Securities Exchange Commission. These reports are available on the Investors page of the company’s corporate Web site at www.trubion.com. Trubion undertakes no duty to update any forward-looking statement to conform the statement to actual results or changes in the company’s expectations.

TRBN-G Jim DeNike Senior Director, Corporate Communication Trubion Pharmaceuticals, Inc. 1-206-838-0500 jdenike@trubion.comhttp://www.trubion.com

Trubion Pharmaceuticals, Inc.

CONTACT: Jim DeNike, Senior Director, Corporate Communication of TrubionPharmaceuticals, Inc., +1-206-838-0500, or jdenike@trubion.com

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