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In some cases of hormone receptor positive, human epidermal growth factor receptor 2 (HER2) negative early breast cancer the benefit of adding adjuvant chemotherapy to hormonal treatment, estimated on the basis of the classical clinico-pathological parameters, is unclear. In these cases the application of a genomic test could be useful in guiding the therapeutic choice.
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Oncotype Dx (ODx) is a 21-gene assay that classifies primary ER+ breast tumors into three categories of recurrence risk: High (HR), Intermediate (IR) and Low (LR).
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In this study, the investigators aim to evaluate the capability of ODx to help in guiding the choice of systemic adjuvant treatment in a group of patients with ER+ and HER2- , node negative (pN0) or micrometastatic (pNmi) breast cancer with uncertain biological behavior for whom there is uncertainty about the indication of adjuvant chemotherapy.
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Data sourced from clinicaltrials.gov
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