Ardea Biosciences Presents Preclinical Data on RDEA119 Demonstrating Favorable Anti-Inflammatory Profile for Potential Use in Ulcerati...(to playan important role in inflammation...),Health

Date:5/20/2008

to play an important role in inflammation, as well as cancer cell proliferation, apoptosis and metastasis. Preclinical and clinical results suggest that RDEA119 has favorable properties, including oral dosing, excellent selectivity and limited retention in the brain, which, in turn, may result in a reduced risk of central nervous system (CNS) side effects. The Company is also investigating a second generation MEK inhibitor, RDEA436, for potential use in inflammatory diseases and cancer. Preclinical data suggest that RDEA436 is a potent in vitro and in vivo inhibitor of MEK and may have favorable properties, such as low CNS penetration. In addition, RDEA436 has demonstrated a long half-life in a human micro-dose pharmacokinetic study, with the potential for once daily dosing in humans.

About Ardea Biosciences

Ardea Biosciences, Inc., of San Diego, California, is a biotechnology company focused on the discovery and development of small-molecule therapeutics for the treatment of HIV, cancer and inflammatory diseases, including gout. We have four drug candidates in clinical trials and others in preclinical development and discovery. Our most advanced development candidate is RDEA806, a non-nucleoside reverse transcriptase inhibitor (NNRTI), which is in a Phase 2a study for the treatment of HIV. We have evaluated our second-generation NNRTI for the treatment of HIV, RDEA427, in a human micro-dose pharmacokinetic study and have selected it as a development candidate. RDEA594, our lead development candidate for the treatment of gout, is in preclinical development and is believed to be an inhibitor of the URAT1 transporter in the kidney, which is responsible for regulation of uric acid levels. We are evaluating our lead MEK inhibitor, RDEA119, in a Phase 1 study in advanced cancer patients, as well as in a Phase 1 study in normal healthy volunteers as a precursor to trials in patients with inflammatory diseases. Lastly, we have evaluated our second-generation
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