Impact of body mass index on overall survival in patients with metastatic breast cancer - Institut Curie Access content directly
Journal Articles The Breast Year : 2021

Impact of body mass index on overall survival in patients with metastatic breast cancer

Matthieu Carton
Pierre-Etienne Heudel
Etienne Brain
Anthony Goncalves
Thierry Petit
Paul Cottu
Coralie Courtinard
  • Function : Author
Mathieu Robain
  • Function : Author
Suzette Delaloge

Abstract

Background: High Body mass index (BMI) is a risk factor for breast cancer among postmenopausal women and an adverse prognostic factor in early-stage. Little is known about its impact on clinical outcomes in patients with metastatic breast cancer (MBC). Methods: The National ESME-MBC observational cohort includes all consecutive patients newly diagnosed with MBC between Jan 2008 and Dec 2016 in the 18 French comprehensive cancer centers. Results: Of 22 463 patients in ESME-MBC, 12 999 women had BMI data available at MBC diagnosis. Median BMI was 24.9 kg/m2 (range 12.1-66.5); 20% of women were obese and 5% underweight. Obesity was associated with more de novo MBC, while underweight patients had more aggressive cancer features. Median overall survival (OS) of the BMI cohort was 47.4 months (95% CI [46.2-48.5]) (median follow-up: 48.6 months). Underweight was independently associated with a worse OS (median OS 33 months; HR 1.14, 95%CI, 1.02-1.27) and first line progression-free survival (HR, 1.11; 95%CI, 1.01; 1.22), while overweight or obesity had no effect. Conclusion: Overweight and obesity are not associated with poorer outcomes in women with metastatic disease, while underweight appears as an independent adverse prognostic factor.
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hal-03345238 , version 1 (28-11-2023)

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Attribution - NonCommercial - NoDerivatives

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Khalil Saleh, Matthieu Carton, Véronique Dieras, Pierre-Etienne Heudel, Etienne Brain, et al.. Impact of body mass index on overall survival in patients with metastatic breast cancer. The Breast, 2021, 55, pp.16-24. ⟨10.1016/j.breast.2020.11.014⟩. ⟨hal-03345238⟩
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