Genomic Health Announces Expansion of Oncotype DX(R) Breast Cancer Test to Include Quantitative Estrogen Receptor (ER) and Progesterone Receptor (...(lly presented at the AmericanSociety of ...)

Date:6/2/2008

lly presented at the American Society of Clinical Oncology Breast Cancer Symposium in September 2007. It measured ER and PR gene expression in 776 breast cancer patients by both local laboratory and central immunohistochemistry (IHC), and quantitative RT-PCR, as performed by the Oncotype DX assay. Results showed a high degree of agreement between the two methods. In an accompanying editorial, Dr. Craig Allred comments, "RT-PCR is at least equivalent to IHC in its ability to identify receptor-positive cases (considering ER and PR combined), marginally superior in predicting outcome in ER-positive patients, and superior in technical precision."

"We believe the methodology of the future is the quantitative measure of the biology of each individual tumor," said Steven Shak, M.D., chief medical officer of Genomic Health. "Providing physicians with quantitative ER and PR scores enhances the value of Oncotype DX by providing more patient-specific information to help individualize treatment decisions for breast cancer patients. We are continuing to conduct additional studies, including studying the use of RT-PCR by Oncotype DX to quantify HER-2 gene expression, another cancer-related gene that plays an important role in the determination of optimal treatment for breast cancer patients."

About Oncotype DX(R)

Oncotype DX is the first and only multi-gene expression test commercially available that has clinical evidence validating its ability to predict the likelihood of chemotherapy benefit as well as recurrence in early-stage breast cancer. Oncotype DX has been extensively evaluated in multiple independent studies involving more than 3,600 breast cancer patients, including a large validation study published in The New England Journal of Medicine and a chemotherapy benefit study published in the Journal of Clinical Oncology. To date, 7,500 physicians have ordered more than 55,000 tests, and health plans covering over 80 percent of U.S. insured lives provid
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SOURCE Genomic Health, Inc. Copyright©2008 PR Newswire. All rights reserved

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