Scientific Reports (Jul 2023)

Final results of the real-life observational VICTOR-6 study on metronomic chemotherapy in elderly metastatic breast cancer (MBC) patients

  • B. Trevisan,
  • F. F. Pepe,
  • I. Vallini,
  • E. Montagna,
  • D. Amoroso,
  • R. Berardi,
  • A. Butera,
  • K. Cagossi,
  • L. Cavanna,
  • M. Ciccarese,
  • S. Cinieri,
  • E. Cretella,
  • E. De Conciliis,
  • A. Febbraro,
  • F. Ferraù,
  • A. Ferzi,
  • A. Baldelli,
  • A. Fontana,
  • A. R. Gambaro,
  • O. Garrone,
  • V. Gebbia,
  • D. Generali,
  • L. Gianni,
  • F. Giovanardi,
  • A. Grassadonia,
  • V. Leonardi,
  • S. Sarti,
  • A. Musolino,
  • M. Nicolini,
  • C. Putzu,
  • F. Riccardi,
  • D. Santini,
  • M. G. Sarobba,
  • M. G. Schintu,
  • G. Scognamiglio,
  • P. Spadaro,
  • C. Taverniti,
  • D. Toniolo,
  • P. Tralongo,
  • A. Turletti,
  • R. Valenza,
  • M. R. Valerio,
  • P. Vici,
  • L. Clivio,
  • V. Torri,
  • M. E. Cazzaniga,
  • The VICTOR Study Group

DOI
https://doi.org/10.1038/s41598-023-39386-x
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 9

Abstract

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Abstract Nowadays, treatment of metastatic breast cancer (MBC) has been enriched with novel therapeutical strategies. Metronomic chemotherapy (mCHT) is a continuous and frequent administration of chemotherapy at a lower dose and so whit less toxicity. Thus, this strategy could be attractive for elderly MBC patients. Aim of this analysis is to provide insights into mCHT’s activity in a real-life setting of elderly MBC patients. Data of patients ≥ 75 years old included in VICTOR-6 study were analyzed. VICTOR-6 is a multicentre, Italian, retrospective study, which collected data on mCHT in MBC patients treated between 2011 and 2016. A total of 112 patients were included. At the beginning of mCHT, median age was 81 years (75–98) and in 33% of the patients mCHT was the first line choice. Overall Response Rate (ORR) and Disease Control Rate (DCR) were 27.9% and 79.3%, respectively. Median PFS ranged between 7.6 and 9.1 months, OS between 14.1 and 18.5 months. The most relevant toxicity was the hematological one (24.1%); severe toxicity (grade 3–4) ranged from 0.9% for skin toxicity up to 8% for hematologic one. This is a large study about mCHT in elderly MBC patients, providing insights to be further investigated in this subgroup of frail patients.