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Oncothyreon's PX-478 is effective in preclinical model of human lung cancer
Date:2/25/2008

ovel small molecule compound that inhibits the activity of hypoxia inducible factor (HIF)-1 alpha, a transcription factor that controls the expression of a number of genes important for growth and survival of cancer cells. Genes regulated by HIF-1 alpha contribute to diverse functions including new blood vessel growth (angiogenesis), use of glucose for energy, and protection against apoptosis (programmed cell death).

Preclinical data have demonstrated that PX-478 can induce apoptosis in experimental tumor models, as well as the down-regulation of factors which control angiogenesis, such as vascular endothelial growth factor (VEGF). PX-478 is effective when delivered orally in animal models, and has shown marked tumor regressions and growth inhibition in model systems across a range of cancers, including lung, ovarian, renal, prostatic, colon, pancreatic, and breast cancer. The wide variety of models that show sensitivity to PX-478 represents a large potential market for this product candidate. The ability to combine PX-478 with radiation therapy may further expand the opportunities for this novel compound.

About Oncothyreon

Oncothyreon is a biotechnology company specializing in the development of innovative therapeutic products for the treatment of cancer. Oncothyreon's goal is to develop and commercialize novel synthetic vaccines and targeted small molecules that have the potential to improve the lives and outcomes of cancer patients. For more information, visit http://www.oncothyreon.com.

Forward-Looking Statements

In order to provide Oncothyreon's investors with an understanding of its current intentions and future prospects, this release contains statements that are forward looking, including statements related to the ongoing Phase 1 trial of PX-478; the therapeutic and commercial potential of PX-478; and future clinical development plans for PX-478. These forward-looking s
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SOURCE Oncothyreon Inc.
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