"Mammostrat has now been validated in five studies involving more than 3,000 women, including comparable results in the same patient cohort used to develop and test the leading breast cancer prognostic test on the market," Andrews added.  "From a commercial standpoint, Mammostrat is an example of the maturation of our breast cancer product line, strengthening our service offering to our pathology clients.  It also further expands our menu of proprietary tests that personalize medicine and give patients important information for managing their disease while maintaining a good quality of life."

Professor Bartlett said, "Mammostrat is different from most risk classifiers in that it does not rely on measurement of surrogates for hormone receptor status, proliferation or tumor grade to risk-stratify. It offers the potential for a broader assessment of tumor aggressiveness by adding Mammostrat risk stratification to traditional risk classifiers."

Clarient Chief Medical Officer Ken Bloom, M.D. added, "Competing tests measure RNA from ground-up tumor tissue.  Mammostrat measures protein expression specifically in the invasive tumor cells, ensuring biomarkers are expressed in the cells of interest, a feature that is very important in actual clinical practice. Given our strong market presence in breast cancer, these new findings will further strengthen our menu of solutions for classifying the aggressiveness of breast cancer and will allow our pathology clients to provide a more thorough assessment of each breast cancer."

The Company is targeting the fourth quarter of 2010 for Mammostrat commercialization.

SOURCE Clarient, Inc.