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We read with great interest the paper by Lee and colleagues1 supporting an association between women’s occupational exposure to polycyclic aromatic hydrocarbons (PAHs) and risk of breast cancer. Their finding of a greater risk for women with a first-degree family history of breast cancer is consistent with our finding published in 2017 showing a very strong interaction between PAH albumin adducts and family history and breast cancer risk in a prospective cohort of women at high risk from breast cancer.2 Unlike Lee and colleagues, however, we did not examine an ever/never construct of family history but rather based our assessment using a continuous family history score …
Contributors MBT drafted the initial letter. MBT and NZ both read and approved the final version submitted.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests None declared.
Provenance and peer review Not commissioned; internally peer reviewed.
Patient consent for publication Not required.
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