Air Pollution and Cardiac Remodeling and Function in Patients With Breast Cancer
JAMA Network Open 10.1001/jamanetworkopen.2025.52323January 15, 2026 at 11:00 AM EST
Is exposure to air pollutants associated with cardiac remodeling and function among women with breast cancer treated with potentially cardiotoxic therapies?In a cohort study of 580 patients with breast cancer treated with anthracyclines and/or trastuzumab, greater exposure to fine particulate matter with diameter of 2.5 µm or less and ozone was associated with worse cardiac remodeling and function and greater risk of therapy-related cardiac dysfunction. Exposure to particulate matter with diameter of 10 µm or less and nitrogen dioxide showed limited associations.This study’s comprehensive structural and functional data support the critical need for strategies to reduce fine particulate matter and ozone exposure, particularly in patients with breast cancer.
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