Original Publication Date: 18 April, 2016
Publication / Source: Breast Cancer Management
Authors: Fernando Salvador, Anna Bellmunt & Roger R Gomis
Despite improvements in breast cancer therapies, cancer cells frequently spread to distant organs years or decades after primary tumor surgery and adjuvant treatment. This expansion, known as metastasis, can bring about fatal consequences. Traditionally, the risk of metastasis has been predicted by prognostic factors such as tumor size, axillary lymph node status and histological grade. More recently, genomic tests have also been used for this purpose. The presence of ER, PR and ERBB2 gene amplification are currently key markers in the characterization of breast tumor type that drive the selection of specific therapies .