The prognostic relevance of HER2-positivity gain in metastatic breast cancer in the ChangeHER trial

Emilio Bria, Ruggero De Maria Marchiano, Domenico Cristiano Corsi, Ida Paris, Laura Pizzuti, Maddalena Barba, Marco Mazzotta, Eriseld Krasniqi, Marcello Maugeri-Saccà, Teresa Gamucci, Rossana Berardi, Lorenzo Livi, Corrado Ficorella, Clara Natoli, Enrico Cortesi, Daniele Generali, Nicla La Verde, Luca Moscetti, Andrea Michelotti, Vincenzo AdamoClaudio Zamagni, Giuseppe Tonini, Domenico Sergi, Daniele Marinelli, Giancarlo Paoletti, Silverio Tomao, Andrea Botticelli, Paolo Marchetti, Nicola Tinari, Antonino Grassadonia, Maria Rosaria Valerio, Rosanna Mirabelli, Maria Agnese Fabbri, Nicola D’Ostilio, Enzo Veltri, Domenico Corsi, Ornella Garrone, Giuseppina Sarobba, Icro Meattini, Mirco Pistelli, Francesco Giotta, Vito Lorusso, Carlo Garufi, Antonio Russo, Marina Cazzaniga, Pietro Del Medico, Mario Roselli, Angela Vaccaro, Letizia Perracchio, Anna Di Benedetto, Theodora Daralioti, Isabella Sperduti, Angelo Di Leo, Giuseppe Sanguineti, Gennaro Ciliberto, Patrizia Vici

Risultato della ricerca: Contributo in rivistaArticolo in rivista

Abstract

In metastatic breast cancer (mBC), the change of human epidermal growth factor receptor 2 (HER2) status between primary and metastatic lesions is widely recognized, however clinical implications are unknown. Our study address the question if relevant differences exist between subjects who preserve the HER2 status and those who gain the HER2 positivity when relapsed. Data of patients affected by HER2-positive mBC, treated with pertuzumab and/or trastuzumab-emtansine (T-DM1) in a real-world setting at 45 Italian cancer centers were retrospectively collected and analyzed. From 2003 to 2017, 491 HER2‐positive mBC patients were included. Of these, 102 (20.7%) had been initially diagnosed as HER2-negative early BC. Estrogen and/or progesterone receptor were more expressed in patients with HER2-discordance compared to patients with HER2-concordant status (p < 0.0001 and p = 0.006, respectively). HER2-discordant tumors were characterized also by a lower rate of brain metastases (p = 0.01) and a longer disease free interval (p < 0.0001). Median overall survival was longer, although not statistically significant, in the subgroup of patients with HER2-discordant cancer with respect to patients with HER2-concordant status (140 vs 78 months, p = 0.07). Our findings suggest that patients with HER2-positive mBC with discordant HER2 status in early BC may have different clinical, biological and prognostic behavior compared to HER2-concordant patients.
Lingua originaleEnglish
pagine (da-a)13770-N/A
RivistaScientific Reports
Volume11
DOI
Stato di pubblicazionePubblicato - 2021

Keywords

  • breast cancer

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