RT Journal Article T1 Biomarkers in breast cancer: A consensus statement by the Spanish Society of Medical Oncology and the Spanish Society of Pathology. A1 Colomer, R A1 Aranda-López, I A1 Albanell, J A1 García-Caballero, T A1 Ciruelos, E A1 López-García, M Á A1 Cortés, J A1 Rojo, F A1 Martín, M A1 Palacios-Calvo, J K1 Breast neoplasm K1 Diagnostic K1 Gene expression profiling K1 Prognostic K1 Therapy predictive AB This consensus statement revises and updates the recommendations for biomarkers use in the diagnosis and treatment of breast cancer, and is a joint initiative of the Spanish Society of Medical Oncology and the Spanish Society of Pathology. This expert group recommends determining in all cases of breast cancer the histologic grade and the alpha-estrogen receptor (ER), progesterone receptor, Ki-67 and HER2 status, in order to assist prognosis and establish therapeutic options, including hormone therapy, chemotherapy and anti-HER2 therapy. One of the four available genetic prognostic platforms (MammaPrint®, Oncotype DX®, Prosigna® or EndoPredict®) may be used in node-negative ER-positive patients to establish a prognostic category and decide with the patient whether adjuvant treatment may be limited to hormonal therapy. Newer technologies including next-generation sequencing, liquid biopsy, tumour-infiltrating lymphocytes or PD-1 determination are at this point investigational. YR 2017 FD 2017-12-22 LK http://hdl.handle.net/10668/11946 UL http://hdl.handle.net/10668/11946 LA en DS RISalud RD Apr 10, 2025