Peregrine Pharmaceuticals Receives Approval to Conduct a Second Phase II Trial of Bavituximab in Patients With Advanced Bre...(esponses saidSteven W. King president a...),Health

Date:1/23/2008

esponses," said Steven W. King, president and CEO of Peregrine. "We are optimistic that this new trial, along with our other Phase II bavituximab breast cancer trial, will provide us with valuable insights into bavituximab's potential in this important disease. We are now proceeding with final preparations for the trial and look forward to study initiation in the near future."

Tumor response in this study will be evaluated using Response Evaluation Criteria in Solid Tumors (RECIST) parameters. The trial is being conducted according to International Conference on Harmonization (ICH) and Good Clinical Practices (GCP) standards.

The National Cancer Institute estimates that approximately 178,480 U.S. women were diagnosed with breast cancer in 2007 and 40,460 women died of the disease. According to the World Health Organization, breast cancer is the most commonly diagnosed cancer in women, and is second only to lung cancer as a leading cause of female cancer deaths.

Bavituximab is a monoclonal antibody that binds to a phospholipid called phosphatidylserine that is usually located inside normal cells, but which becomes exposed on the outside of the cells that line the blood vessels of tumors, creating a specific target for anti-cancer treatments. Bavituximab is believed to help mobilize the body's immune system to destroy the blood vessels needed for tumor growth and spread. In a Phase lb trial in advanced cancer patients, bavituximab plus chemotherapy appeared to have a safety profile consistent with chemotherapy alone and showed positive signs of clinical activity, achieving objective response or disease stabilization in 50% of the evaluable patients. Peregrine has now received regulatory approval for three Phase II clinical trials to study the anti-tumor effects of bavituximab in combination with chemotherapy: A breast cancer protocol in combination with docetaxel, a second breast cancer protocol in combination with carboplatin plus paclitaxel, and
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