Breast cancer incidence in relation to long-term low-level exposure to air pollution in the ELAPSE pooled cohort
File(s)
Accepted version
Author(s)
Type
Journal Article
Abstract
Background:
Established risk factors for breast cancer include genetic disposition, reproductive factors, hormone therapy, and lifestyle-related factors such as alcohol consumption, physical inactivity, smoking, and obesity. More recently a role of environmental exposures, including air pollution, has also been suggested. The aim of this study, was to investigate the relationship between long-term air pollution exposure and breast cancer incidence.
Methods:
We conducted a pooled analysis among six European cohorts (n = 199,719) on the association between long-term residential levels of ambient nitrogen dioxide (NO2), fine particles (PM2.5), black carbon (BC), and ozone in the warm season (O3) and breast cancer incidence in women. The selected cohorts represented the lower range of air pollutant concentrations in Europe. We applied Cox proportional hazards models adjusting for potential confounders at the individual and area-level.
Results:
During 3,592,885 person-years of follow-up, we observed a total of 9,659 incident breast cancer cases. The results of the fully adjusted linear analyses showed a HR (95% confidence interval) of 1.03 (1.00–1.06) per 10 μg/m³ NO2, 1.06 (1.01–1.11) per 5 μg/m³ PM2.5, 1.03 (0.99–1.06) per 0.5 10−5 m−1 BC, and 0.98 (0.94–1.01) per 10 μg/m³ O3. The effect estimates were most pronounced in the group of middle-aged women (50–54 years) and among never smokers.
Conclusions:
The results were in support of an association between especially PM2.5 and breast cancer.
Impact:
The findings of this study suggest a role of exposure to NO2, PM2.5, and BC in development of breast cancer.
Established risk factors for breast cancer include genetic disposition, reproductive factors, hormone therapy, and lifestyle-related factors such as alcohol consumption, physical inactivity, smoking, and obesity. More recently a role of environmental exposures, including air pollution, has also been suggested. The aim of this study, was to investigate the relationship between long-term air pollution exposure and breast cancer incidence.
Methods:
We conducted a pooled analysis among six European cohorts (n = 199,719) on the association between long-term residential levels of ambient nitrogen dioxide (NO2), fine particles (PM2.5), black carbon (BC), and ozone in the warm season (O3) and breast cancer incidence in women. The selected cohorts represented the lower range of air pollutant concentrations in Europe. We applied Cox proportional hazards models adjusting for potential confounders at the individual and area-level.
Results:
During 3,592,885 person-years of follow-up, we observed a total of 9,659 incident breast cancer cases. The results of the fully adjusted linear analyses showed a HR (95% confidence interval) of 1.03 (1.00–1.06) per 10 μg/m³ NO2, 1.06 (1.01–1.11) per 5 μg/m³ PM2.5, 1.03 (0.99–1.06) per 0.5 10−5 m−1 BC, and 0.98 (0.94–1.01) per 10 μg/m³ O3. The effect estimates were most pronounced in the group of middle-aged women (50–54 years) and among never smokers.
Conclusions:
The results were in support of an association between especially PM2.5 and breast cancer.
Impact:
The findings of this study suggest a role of exposure to NO2, PM2.5, and BC in development of breast cancer.
Date Issued
2023-01-01
Date Acceptance
2022-10-05
Citation
Cancer Epidemiology, Biomarkers and Prevention, 2023, 32 (1), pp.105-113
ISSN
1055-9965
Publisher
American Association for Cancer Research
Start Page
105
End Page
113
Journal / Book Title
Cancer Epidemiology, Biomarkers and Prevention
Volume
32
Issue
1
Copyright Statement
©2022 American Association for Cancer Research.
Identifier
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000908892700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
Subjects
Science & Technology
Life Sciences & Biomedicine
Oncology
Public, Environmental & Occupational Health
RISK-FACTORS
POPULATION
HEALTH
MEN
PROFILE
PM2.5
DIOXIDE
MODELS
WOMEN
LIFE
Publication Status
Published
Date Publish Online
2022-10-10