Exelixis Reports Encouraging Interim Data From a Phase 2 Trial of XL647 as First-Line Therapy for Non-Small Cell L...(ients have had a maximum Grade 1 QTc int...)

Date:9/4/2007

ients have had a maximum Grade 1 QTc interval prolongation, and 7 patients a maximum Grade 2; the increases were clinically asymptomatic and not associated with AEs or dose reduction or delay. One patient who experienced an event of asymptomatic Grade 3 QTc interval prolongation had ineligible baseline QTc values (Grade 2) and was withdrawn from the study. A total of 16 serious AEs were reported in 8 patients. 5 events in 4 patients were considered possibly or probably related to study drug: Grade 3 GI hemorrhage and duodenal ulcer in 1 patient, and Grade 3 pneumonia, Grade 4 pulmonary embolism, and Grade 2 haemoptysis.

About XL647

XL647 is a potent inhibitor of receptor tyrosine kinases (RTKs) that are implicated in driving tumor proliferation and vascularization (blood vessel formation). XL647 inhibits EGFR, HER2 and VEGFR2. The compound has been optimized for high potency and oral bioavailability (using in vivo systems), demonstrates excellent activity in target-specific cellular functional assays and has shown sustained inhibition of target RTKs preclinically in vivo following a single oral dose. Two phase 2 trials in patients with NSCLC are ongoing.

About Exelixis

Exelixis, Inc. is a development-stage biotechnology company dedicated to the discovery and development of novel small molecule therapeutics for the treatment of cancer and other serious diseases. The company is leveraging its fully integrated drug discovery platform to fuel the growth of its development pipeline, which is primarily focused on cancer. Currently, Exelixis' broad product pipeline includes investigational compounds in phase 2 and phase 1 clinical development for cancer and renal disease. Exelixis has established strategic corporate alliances with major pharmaceutical and biotechnology companies, including GlaxoSmithKline, Bristol-Myers Squibb Company, Genentech, Wyeth Pharmaceuticals and Daiichi-Sankyo. For more information, please visit the company's web site at <
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SOURCE Exelixis, Inc. Copyright©2007 PR Newswire. All rights reserved

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