A simple genetic test that uses just three genes is among the most effective means of classifying breast cancer into sub-types, US researchers report at the IMPAKT Breast Cancer Conference in Brussels, Belgium. The findings are a significant step in bringing more personalized treatment into breast cancer. The study is based on the already well-established fact that breast cancer is not one biologically homogeneous disease, but it is composed of several molecular sub-types each of which is characterized by distinct gene expression profiles... 
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