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Liquid Biopsy as a Tool for the Diagnosis, Treatment, and Monitoring of Breast Cancer

期刊

出版社

MDPI
DOI: 10.3390/ijms23179952

关键词

liquid biopsy; precision medicine; breast cancer

资金

  1. Departamento de Ciencia e Tecnologia (DECIT)
  2. Ministerio da Saude [879848/2018]

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Liquid biopsy is a new technique that can assess the molecular heterogeneity of breast cancer, aiding in personalized treatment, early screening, and accurate diagnosis. By sampling tumor components from biological samples such as blood, this method can detect circulating tumor cells, circulating tumor DNA, and other markers, providing guidance for breast cancer therapy.
Breast cancer (BC) is a highly heterogeneous disease. The treatment of BC is complicated owing to intratumoral complexity. Tissue biopsy and immunohistochemistry are the current gold standard techniques to guide breast cancer therapy; however, these techniques do not assess tumoral molecular heterogeneity. Personalized medicine aims to overcome these biological and clinical complexities. Advances in techniques and computational analyses have enabled increasingly sensitive, specific, and accurate application of liquid biopsy. Such progress has ushered in a new era in precision medicine, where the objective is personalized treatment of breast cancer, early screening, accurate diagnosis and prognosis, relapse detection, longitudinal monitoring, and drug selection. Liquid biopsy can be defined as the sampling of components of tumor cells that are released from a tumor and/or metastatic deposits into the blood, urine, feces, saliva, and other biological substances. Such components include circulating tumor cells (CTCs), circulating tumor DNA (ctDNA) or circulating tumor RNA (ctRNA), platelets, and exosomes. This review aims to highlight the role of liquid biopsy in breast cancer and precision medicine.

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