Long-term effect of neoadjuvant denosumab treatment in high-risk early breast cancer (GeparX)

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • T. Link - , Klinik und Poliklinik für Frauenheilkunde und Geburtshilfe, Nationales Centrum für Tumorerkrankungen Dresden (Autor:in)
  • M. Reinisch - , Universität Heidelberg (Autor:in)
  • M. Just - , Klinikum Bielefeld (Autor:in)
  • M. Untch - , Fresenius AG (Autor:in)
  • N. Filmann - , German Breast Group Forschungs GmbH (Autor:in)
  • O. Stötzer - , Medizinisches Zentrum für Hämatologie und Onkologie (Autor:in)
  • C. Denkert - , Universitätsklinikum Gießen und Marburg GmbH (Autor:in)
  • V. Bjelic-Radisic - , Helios Universitätsklinikum Wuppertal (Autor:in)
  • P. Wimberger - , Klinik und Poliklinik für Frauenheilkunde und Geburtshilfe, Nationales Centrum für Tumorerkrankungen Dresden (Autor:in)
  • M. Thill - , Agaplesion Markus Krankenhaus Frankfurt (Autor:in)
  • K. Rhiem - , Universität zu Köln (Autor:in)
  • J. Huober - , Kantonsspital St.Gallen (Autor:in)
  • C. Solbach - , Universitätsklinikum Frankfurt (Autor:in)
  • C. Hanusch - , Rot­kreuz­kli­ni­kum Mün­chen gGmbH (Autor:in)
  • K. Engels - , MVZ für Pathologie, Zytologie und Molekularpathologie Neuss (Autor:in)
  • P. A. Fasching - , Friedrich-Alexander-Universität Erlangen-Nürnberg (Autor:in)
  • A. Schneeweiss - , Universität Heidelberg (Autor:in)
  • V. Nekljudova - , German Breast Group Forschungs GmbH (Autor:in)
  • J. Holtschmidt - , German Breast Group Forschungs GmbH (Autor:in)
  • J. U. Blohmer - , Charité – Universitätsmedizin Berlin (Autor:in)
  • S. Loibl - , German Breast Group Forschungs GmbH, Johann Wolfgang Goethe-Universität Frankfurt am Main (Autor:in)

Abstract

Background: In the GeparX trial (NCT02682693), neoadjuvant denosumab, in addition to either weekly or days 1 and 8 (d1,8) q22 nab-paclitaxel (nPac)-based chemotherapy, did not improve the pathological complete response (pCR) rate in early high-risk breast cancer patients, while the concomitantly applied weekly nPac regimen resulted in a significantly higher pCR rate compared with the interrupted regimen. Patients and methods: GeparX is a randomized, open-label, phase II study comparing neoadjuvant treatment with or without denosumab and two different nPac schedules. Invasive disease-free survival (iDFS), distant disease-free survival (DDFS), overall survival (OS), and locoregional recurrence-free interval (LRRFI) were considered as time-to-event endpoints. Results: After a median follow-up of 62.3 months, there was no statistically significant difference in iDFS [hazard ratio (HR) 0.86, 95% confidence interval (CI) 0.62-1.21, P = 0.39], DDFS (HR 0.77, 95% CI 0.54-1.11, P = 0.16), LRRFI (HR 1.41, 95% CI 0.76-2.63, P = 0.28), and OS (HR 0.81, 95% CI 0.50-1.33, P = 0.41) between denosumab-treated and non-denosumab-treated patients. However, numerically fewer distant relapses occurred in patients with denosumab treatment (9.2% versus 13.8%). Denosumab treatment resulted in a significant risk reduction of 36% for distant relapse in the multivariate analysis (DDFS; HR 0.64, 95% CI 0.43-0.93, P = 0.02). There was no overall differential impact of the two neoadjuvant chemotherapy (NACT) regimens (nPac weekly or nPac d1,8 q22) on long-term outcome in the total study population. Triple-negative breast cancer (TNBC) patients without a pCR (non-pCR) had a significantly worse iDFS (HR 0.22, 95% CI 0.12-0.39, P < 0.0001), with a trend toward improved iDFS in those receiving weekly nPac at the 5-year landmark (iDFS rate at 60 months: 58.4% versus 72%). Conclusions: Denosumab as part of neoadjuvant therapy, although not improving the pCR rate, significantly reduced the risk of distant relapses. Other long-term outcome parameters did not differ between the treatment arms. TNBC patients, especially when not achieving pCR, seem to benefit from weekly nPac.

Details

OriginalspracheEnglisch
Aufsatznummer105915
FachzeitschriftESMO open
Jahrgang10
Ausgabenummer12
PublikationsstatusVeröffentlicht - Dez. 2025
Peer-Review-StatusJa

Externe IDs

PubMed 41313969

Schlagworte

Ziele für nachhaltige Entwicklung

ASJC Scopus Sachgebiete

Schlagwörter

  • breast cancer, denosumab, GeparX trial, nab-paclitaxel schedules, neoadjuvant chemotherapy, survival outcomes