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Recommendations from the European Commission Initiative on Breast Cancer for multigene testing to guide the use of adjuvant chemotherapy in patients with early breast cancer, hormone receptor positive, HER-2 negative

  • the ECIBC Contributor Group
  • IRCCS Azienda Unità Sanitaria Locale di Reggio Emilia
  • University of Hamburg
  • Centro de Investigación Biomédicaen Red de Epidemiología y Salud Pública (CIBERESP)
  • Autonomous University of Barcelona
  • European Commission Joint Research Centre
  • Avenida Monforte de Lemos 5
  • University College Dublin
  • University of Amsterdam
  • Cardiff & Vale University Health Board
  • Havyatt Road
  • Radboud University Nijmegen
  • Dutch Expert Centre for Screening
  • Radiologie am Theater
  • Hospital del Mar
  • Research Network on Health Services in Chronic Diseases (REDISSEC)
  • Queen Mary University of London
  • Cancer Registry of Milan
  • University of Geneva
  • Municipal Institute for Medical Research Hospital del Mar
  • European Centre for Disease Prevention and Control
  • Charles University
  • National Screening Service
  • CPO-Piedmont - AOU Citta` della Salute e della Scienza
  • Cancer Registry of Norway Institute of Population-Based Cancer Research
  • National and Kapodistrian University of Athens
  • Europa Donna
  • Umeå University
  • University Hospital Dr. Josep Trueta
  • Asst Grande Ospedale Metropolitano Niguarda
  • Dutch Reference Centre for Screening
  • National Coordinating Centre for the Physics of Mammography

Research output: Contribution to journalReview articlepeer-review

29 Scopus citations

Abstract

Background: Predicting the risk of recurrence and response to chemotherapy in women with early breast cancer is crucial to optimise adjuvant treatment. Despite the common practice of using multigene tests to predict recurrence, existing recommendations are inconsistent. Our aim was to formulate healthcare recommendations for the question “Should multigene tests be used in women who have early invasive breast cancer, hormone receptor-positive, HER2-negative, to guide the use of adjuvant chemotherapy?” Methods: The European Commission Initiative on Breast Cancer (ECIBC) Guidelines Development Group (GDG), a multidisciplinary guideline panel including experts and three patients, developed recommendations informed by systematic reviews of the evidence. Grading of Recommendations Assessment, Development and Evaluation (GRADE) Evidence to Decision frameworks were used. Four multigene tests were evaluated: the 21-gene recurrence score (21-RS), the 70-gene signature (70-GS), the PAM50 risk of recurrence score (PAM50-RORS), and the 12-gene molecular score (12-MS). Results: Five studies (2 marker-based design RCTs, two treatment interaction design RCTs and 1 pooled individual data analysis from observational studies) were included; no eligible studies on PAM50-RORS or 12-MS were identified and the GDG did not formulate recommendations for these tests. Conclusions: The ECIBC GDG suggests the use of the 21-RS for lymph node-negative women (conditional recommendation, very low certainty of evidence), recognising that benefits are probably larger in women at high risk of recurrence based on clinical characteristics. The ECIBC GDG suggests the use of the 70-GS for women at high clinical risk (conditional recommendation, low certainty of evidence), and recommends not using 70-GS in women at low clinical risk (strong recommendation, low certainty of evidence).

Original languageEnglish
Pages (from-to)1503-1512
Number of pages10
JournalBritish Journal of Cancer
Volume124
Issue number9
DOIs
StatePublished - Apr 27 2021

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