Clarient, Inc. (Nasdaq: CLRT), a premier technology and services resource for pathologists, oncologists and the pharmaceutical industry, today announced that a manuscript based on a study of Clarient Insight®Dx Mammostrat®, a test used to classify the risk of recurrence of breast cancer following surgery and chemotherapy, will be published in an upcoming edition of Breast Cancer Research, a prominent peer-reviewed medical journal. The manuscript, currently available in provisional format at the journal website (http://breast-cancer-research.com), is titled "Mammostrat® as a Tool to Stratify Breast Cancer Patients at Risk of Recurrence during Endocrine Therapy."
The manuscript reports the results of a 1,540-patient study, led by John Bartlett, Professor of Molecular Pathology at the University of Edinburgh in Scotland, further validating the Mammostrat test as an aid for risk-stratifying early stage hormone receptor-treated breast cancer patients. In addition, the manuscript reports for the first time that the Mammostrat test may be useful as a tool for risk-stratifying, node-positive patients and those who do not express hormone receptors.
More than 210,000 women in the U.S. develop breast cancer each year. Mammostrat development was targeted to breast tumors which express estrogen receptor, the most commonly seen subtype of breast cancer. The standard of care for most of these patients is surgery to remove the tumor, followed by anti-hormonal therapy (e.g. tamoxifen or aromatase inhibitors). Mammostrat testing will help pathologists, oncologists and patients decide whether additional aggressive chemotherapy should be added to the treatment regimen.
The Mammostrat test had its origins in transcriptomic measurement of tens of thousands of genes, but Clarient scientists developed a simplified clinical grade assay by using a proteomic approach to screen hundreds of candidate markers on thousands of tissues. An optimal set of five biomarkers, able to be visualized directly on the tumor specimen, were identified which are combined using a mathematical algorithm into an assessment of risk for cancer recurrence after standard treatment. "We believe Mammostrat will bring a novel approach to tumor classification enabling pathologists to deliver a comprehensive pathological report at the time of diagnosis," said Ron Andrews, Clarient Vice Chairman and Chief Executive Officer.