npj Breast Cancer (Apr 2023)

Prognostic significance of HER2-low status in HR-positive/HER2-negative advanced breast cancer treated with CDK4/6 inhibitors

  • Emma Zattarin,
  • Daniele Presti,
  • Luigi Mariani,
  • Caterina Sposetti,
  • Rita Leporati,
  • Alice Menichetti,
  • Chiara Corti,
  • Chiara Benvenuti,
  • Giovanni Fucà,
  • Riccardo Lobefaro,
  • Francesca Ligorio,
  • Leonardo Provenzano,
  • Andrea Vingiani,
  • Marta Del Vecchio,
  • Gaia Griguolo,
  • Marianna Sirico,
  • Ottavia Bernocchi,
  • Antonio Marra,
  • Paola Zagami,
  • Elisa Agostinetto,
  • Flavia Jacobs,
  • Pierluigi Di Mauro,
  • Andrea Esposito,
  • Carlo Alberto Giorgi,
  • Luca Lalli,
  • Laura Boldrini,
  • Pier Paolo Berton Giacchetti,
  • Ambra Carnevale Schianca,
  • Valentina Guarneri,
  • Rebecca Pedersini,
  • Agnese Losurdo,
  • Alberto Zambelli,
  • Daniele Generali,
  • Carmen Criscitiello,
  • Giuseppe Curigliano,
  • Giancarlo Pruneri,
  • Filippo de Braud,
  • Maria Vittoria Dieci,
  • Claudio Vernieri

DOI
https://doi.org/10.1038/s41523-023-00534-1
Journal volume & issue
Vol. 9, no. 1
pp. 1 – 5

Abstract

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Abstract Whether Human Epidermal growth factor Receptor 2 (HER2)-low status has prognostic significance in HR + /HER2- advanced Breast Cancer (aBC) patients treated with first-line Endocrine Therapy plus CDK 4/6 inhibitors remains unclear. In 428 patients evaluated, HER2-low status was independently associated with significantly worse PFS and OS when compared with HER2-0 status. Based on our findings, HER2-low status could become a new prognostic biomarker in this clinical setting.