Vinorelbine With or Without Thiotepa for HER2‐Negative Metastatic Breast Cancer: A Propensity Score Analysis

ABSTRACT Background Vinorelbine is commonly used to treat metastatic breast cancer (mBC), while thiotepa is known for its ability to cross the blood–brain barrier. Methods Our retrospective study aimed to compare the efficacy and safety of vinorelbine with or without thiotepa in patients with HER2‐n...

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Main Authors: Aurelia Robert, Paul Gougis, Elise Dumas, Rebecca Loison, Victoire De Castelbajac, Marc Espie, Sylvie Giacchetti, Caroline Cuvier, Lamia Hassani, Johanna Wassermann, Luca Campedel, Marianne Veyri, Aurore Vozy, Jean Philippe Spano, Luis Teixeira, Baptiste Abbar
Format: Article
Language:English
Published: Wiley 2025-08-01
Series:Cancer Medicine
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Online Access:https://doi.org/10.1002/cam4.71102
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author Aurelia Robert
Paul Gougis
Elise Dumas
Rebecca Loison
Victoire De Castelbajac
Marc Espie
Sylvie Giacchetti
Caroline Cuvier
Lamia Hassani
Johanna Wassermann
Luca Campedel
Marianne Veyri
Aurore Vozy
Jean Philippe Spano
Luis Teixeira
Baptiste Abbar
author_facet Aurelia Robert
Paul Gougis
Elise Dumas
Rebecca Loison
Victoire De Castelbajac
Marc Espie
Sylvie Giacchetti
Caroline Cuvier
Lamia Hassani
Johanna Wassermann
Luca Campedel
Marianne Veyri
Aurore Vozy
Jean Philippe Spano
Luis Teixeira
Baptiste Abbar
author_sort Aurelia Robert
collection DOAJ
description ABSTRACT Background Vinorelbine is commonly used to treat metastatic breast cancer (mBC), while thiotepa is known for its ability to cross the blood–brain barrier. Methods Our retrospective study aimed to compare the efficacy and safety of vinorelbine with or without thiotepa in patients with HER2‐negative mBC. We used propensity score inverse probability of treatment weighting to ensure comparability between groups. Results Vinorelbine‐thiotepa was not significantly associated with improved median progression‐free survival (PFS) (4.9 vs. 3.0 months, p = 0.138) or median overall survival (OS) (11.8 vs. 11.9 months, p = 0.961) compared to vinorelbine. However, in the central nervous system (CNS) metastasis subgroup, vinorelbine‐thiotepa was associated with a longer median PFS (4.9 vs. 2.1 months, p = 0.013) and CNS‐PFS (6.12 vs. 2.20 months, p = 0.007). The combination was also associated with a higher rate of grade ≥ 3 adverse events (54.3% vs. 37.9%, p = 0.021). Conclusion While no overall benefit in PFS or OS was found, vinorelbine‐thiotepa may be associated with improved PFS in mBC patients with CNS metastasis.
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spelling doaj-art-361d08e2f0774cb282b3d6a9b94975a42025-08-20T03:06:40ZengWileyCancer Medicine2045-76342025-08-011415n/an/a10.1002/cam4.71102Vinorelbine With or Without Thiotepa for HER2‐Negative Metastatic Breast Cancer: A Propensity Score AnalysisAurelia Robert0Paul Gougis1Elise Dumas2Rebecca Loison3Victoire De Castelbajac4Marc Espie5Sylvie Giacchetti6Caroline Cuvier7Lamia Hassani8Johanna Wassermann9Luca Campedel10Marianne Veyri11Aurore Vozy12Jean Philippe Spano13Luis Teixeira14Baptiste Abbar15Department of Medical Oncology Sorbonne Université, Assistance Publique—Hôpitaux de Paris (AP‐HP), Institut Universitaire de Cancérologie, CLIP2 Galilée, Pitié‐Salpêtrière Hospital Paris FranceDepartment of Medical Oncology Sorbonne Université, Assistance Publique—Hôpitaux de Paris (AP‐HP), Institut Universitaire de Cancérologie, CLIP2 Galilée, Pitié‐Salpêtrière Hospital Paris FranceInstitut Curie, Residual Tumor & Response to Treatment Laboratory, RT2Lab INSERM U932 Immunity and Cancer Paris FranceDepartment of Senology Université Paris Cité, AP‐HP, Saint‐Louis Hospital Paris FranceDepartment of Senology Université Paris Cité, AP‐HP, Saint‐Louis Hospital Paris FranceDepartment of Senology Université Paris Cité, AP‐HP, Saint‐Louis Hospital Paris FranceDepartment of Senology Université Paris Cité, AP‐HP, Saint‐Louis Hospital Paris FranceDepartment of Senology Université Paris Cité, AP‐HP, Saint‐Louis Hospital Paris FranceSorbonneUniversité, AP‐HP, Pitié‐SalpêtrièreHospital, Department of Pharmacy Paris FranceDepartment of Medical Oncology Sorbonne Université, Assistance Publique—Hôpitaux de Paris (AP‐HP), Institut Universitaire de Cancérologie, CLIP2 Galilée, Pitié‐Salpêtrière Hospital Paris FranceDepartment ofMedical and Thoracic Oncology, CHU Gabriel Montpied Clermont‐Ferrand FranceDepartment of Medical Oncology Sorbonne Université, Assistance Publique—Hôpitaux de Paris (AP‐HP), Institut Universitaire de Cancérologie, CLIP2 Galilée, Pitié‐Salpêtrière Hospital Paris FranceDepartment of Medical Oncology Sorbonne Université, Assistance Publique—Hôpitaux de Paris (AP‐HP), Institut Universitaire de Cancérologie, CLIP2 Galilée, Pitié‐Salpêtrière Hospital Paris FranceDepartment of Medical Oncology Sorbonne Université, Assistance Publique—Hôpitaux de Paris (AP‐HP), Institut Universitaire de Cancérologie, CLIP2 Galilée, Pitié‐Salpêtrière Hospital Paris FranceDepartment of Senology Université Paris Cité, AP‐HP, Saint‐Louis Hospital Paris FranceDepartment of Medical Oncology Sorbonne Université, Assistance Publique—Hôpitaux de Paris (AP‐HP), Institut Universitaire de Cancérologie, CLIP2 Galilée, Pitié‐Salpêtrière Hospital Paris FranceABSTRACT Background Vinorelbine is commonly used to treat metastatic breast cancer (mBC), while thiotepa is known for its ability to cross the blood–brain barrier. Methods Our retrospective study aimed to compare the efficacy and safety of vinorelbine with or without thiotepa in patients with HER2‐negative mBC. We used propensity score inverse probability of treatment weighting to ensure comparability between groups. Results Vinorelbine‐thiotepa was not significantly associated with improved median progression‐free survival (PFS) (4.9 vs. 3.0 months, p = 0.138) or median overall survival (OS) (11.8 vs. 11.9 months, p = 0.961) compared to vinorelbine. However, in the central nervous system (CNS) metastasis subgroup, vinorelbine‐thiotepa was associated with a longer median PFS (4.9 vs. 2.1 months, p = 0.013) and CNS‐PFS (6.12 vs. 2.20 months, p = 0.007). The combination was also associated with a higher rate of grade ≥ 3 adverse events (54.3% vs. 37.9%, p = 0.021). Conclusion While no overall benefit in PFS or OS was found, vinorelbine‐thiotepa may be associated with improved PFS in mBC patients with CNS metastasis.https://doi.org/10.1002/cam4.71102breast cancerpropensity scorereal‐world evidencethiotepavinorelbine
spellingShingle Aurelia Robert
Paul Gougis
Elise Dumas
Rebecca Loison
Victoire De Castelbajac
Marc Espie
Sylvie Giacchetti
Caroline Cuvier
Lamia Hassani
Johanna Wassermann
Luca Campedel
Marianne Veyri
Aurore Vozy
Jean Philippe Spano
Luis Teixeira
Baptiste Abbar
Vinorelbine With or Without Thiotepa for HER2‐Negative Metastatic Breast Cancer: A Propensity Score Analysis
Cancer Medicine
breast cancer
propensity score
real‐world evidence
thiotepa
vinorelbine
title Vinorelbine With or Without Thiotepa for HER2‐Negative Metastatic Breast Cancer: A Propensity Score Analysis
title_full Vinorelbine With or Without Thiotepa for HER2‐Negative Metastatic Breast Cancer: A Propensity Score Analysis
title_fullStr Vinorelbine With or Without Thiotepa for HER2‐Negative Metastatic Breast Cancer: A Propensity Score Analysis
title_full_unstemmed Vinorelbine With or Without Thiotepa for HER2‐Negative Metastatic Breast Cancer: A Propensity Score Analysis
title_short Vinorelbine With or Without Thiotepa for HER2‐Negative Metastatic Breast Cancer: A Propensity Score Analysis
title_sort vinorelbine with or without thiotepa for her2 negative metastatic breast cancer a propensity score analysis
topic breast cancer
propensity score
real‐world evidence
thiotepa
vinorelbine
url https://doi.org/10.1002/cam4.71102
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