[2014 update of the GEFPICS' recommendations for HER2 status determination in breast cancers in France]

Ann Pathol. 2014 Oct;34(5):352-65. doi: 10.1016/j.annpat.2014.08.018. Epub 2014 Sep 26.
[Article in French]

Abstract

International guidelines on HER2 determination in breast cancer have just been updated by the American Society of Clinical Oncology (ASCO) and College of American Pathologists (CAP), on the basis of more than ten-year practice, results of clinical trials and concordance studies. The GEFPICS group, composed of expert pathologists in breast cancer, herein presents these recommendations, adapted to the French routine practice. These guidelines highlight the possible diagnosis difficulties with regards to HER2 status determination, such as intra-tumor heterogeneity, special histological subtypes and biomarker re-evaluation during metastatic relapse. Pre-analytical issues and updated scoring criteria (especially for equivocal cases) are detailed, in order to decrease the occurrence of false negative cases. In the era of personalized medicine, pathologists are more than ever involved in the quality of oncotheranostic biomarker evaluation.

Keywords: Breast cancer; Cancer du sein; Guidelines; HER2; Hybridation in situ; Immunohistochemistry; Immunohistochimie; In situ hybridization; Recommandations.

Publication types

  • English Abstract
  • Practice Guideline

MeSH terms

  • Biomarkers, Tumor / analysis*
  • Breast Neoplasms / chemistry*
  • Breast Neoplasms / drug therapy
  • Breast Neoplasms / pathology*
  • False Negative Reactions
  • Female
  • France
  • Humans
  • Immunohistochemistry / methods
  • In Situ Hybridization
  • In Situ Hybridization, Fluorescence
  • Neoplasm Metastasis / pathology
  • Neoplasm Recurrence, Local
  • Prognosis
  • Receptor, ErbB-2 / analysis*

Substances

  • Biomarkers, Tumor
  • ERBB2 protein, human
  • Receptor, ErbB-2