Gene expression profiling in breast cancer: a clinical perspective

Breast. 2013 Apr;22(2):109-120. doi: 10.1016/j.breast.2013.01.016. Epub 2013 Feb 23.


Gene expression profiling tests are used in an attempt to determine the right treatment for the right person with early-stage breast cancer that may have spread to nearby lymph nodes but not to distant parts of the body. These new diagnostic approaches are designed to spare people who do not need additional treatment (adjuvant therapy) the side effects of unnecessary treatment, and allow people who may benefit from adjuvant therapy to receive it. In the present review we discuss in detail the major diagnostic tests available such as MammaPrint dx, Oncotype dx, PAM50, Mammostrat, IHC4, MapQuant DX, Theros-Breast Cancer Gene Expression Ratio Assay, and their potential clinical applications.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Biomarkers, Tumor / genetics
  • Breast Neoplasms / drug therapy
  • Breast Neoplasms / genetics*
  • Breast Neoplasms / pathology
  • Female
  • Gene Expression Profiling* / classification
  • Gene Expression Profiling* / instrumentation
  • Gene Expression Profiling* / methods
  • Gene Expression Regulation, Neoplastic
  • Humans
  • Immunohistochemistry
  • Neoplasm Metastasis
  • Prognosis
  • Reverse Transcriptase Polymerase Chain Reaction / instrumentation
  • Reverse Transcriptase Polymerase Chain Reaction / methods
  • Sensitivity and Specificity


  • Biomarkers, Tumor