Cancer Management and Research (Dec 2019)

Decision of Adjuvant Systemic Treatment in HR+ HER2- Early Invasive Breast Cancer: Which Biomarkers Could Help?

  • Alexandre M,
  • Maran-Gonzalez A,
  • Viala M,
  • Firmin N,
  • D'Hondt V,
  • Gutowski M,
  • Bourgier C,
  • Jacot W,
  • Guiu S

Journal volume & issue
Vol. Volume 11
pp. 10353 – 10373

Abstract

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Marie Alexandre,1 Aurélie Maran-Gonzalez,2 Marie Viala,1 Nelly Firmin,1 Véronique D’Hondt,1,3,4 Marian Gutowski,5 Céline Bourgier,3,6 William Jacot,1,3,4 Séverine Guiu1,3,4 1Department of Medical Oncology, Institut Régional du Cancer de Montpellier, Montpellier Cedex 5 34298, France; 2Department of Pathology, Institut Régional du Cancer de Montpellier, Montpellier Cedex 5 34298, France; 3INSERM U1194 – Institut de Recherche en Cancérologie de Montpellier (IRCM), Montpellier, France; 4University of Montpellier, Montpellier,France; 5Department of Surgery, Institut Régional du Cancer de Montpellier, Montpellier Cedex 5 34298, France; 6Department of Radiation Oncology, Institut Régional du Cancer de Montpellier, Montpellier Cedex 5 34298, FranceCorrespondence: Marie AlexandreMedical Oncology Department, Institut Régional du Cancer Montpellier, 208, Rue des Apothicaires, Montpellier Cedex 5 34298, FranceTel +33-4 67 61 23 93Fax +33-4 67 61 37 64Email [email protected]: The decision to administer adjuvant chemotherapy in treatment of early invasive breast cancer (EBC) is often complex, particularly for hormone receptor-positive (HR+) diseases, and current guidelines often classify these patients in an intermediate-risk group. Several biomarkers are currently available in this indication, in order to obtain additional and more accurate prognostic information compared to classic clinicopathological characteristics and guide the indication of adjuvant chemotherapy, optimizing the efficacy/toxicity ratio. We conducted a systematic review to evaluate the clinical validity and clinical utility of five biomarkers (uPA/PAI-1, OncotypeDX®, MammaPrint®, PAM50, and EndoPredict®) in HR+/HER2- EBC, whatever the nodal status. A total of 89 studies met the inclusion criteria. Even though data currently available confirm the clinical validity of these biomarkers, there is a lack of data regarding clinical utility for most of them. Prospective studies in well-defined populations are needed to integrate these biomarkers in a decision strategy.Keywords: breast cancer, adjuvant chemotherapy, biomarkers

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