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10559965epi141136-sup-138469_2_supp_2839140_nffr5f.pdf (37.18 kB)

Supplementary Table S1 from Dense and Nondense Mammographic Area and Risk of Breast Cancer by Age and Tumor Characteristics

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posted on 2023-03-31, 13:42 authored by Kimberly A. Bertrand, Christopher G. Scott, Rulla M. Tamimi, Matthew R. Jensen, V. Shane Pankratz, Aaron D. Norman, Daniel W. Visscher, Fergus J. Couch, John Shepherd, Yunn-Yi Chen, Bo Fan, Fang-Fang Wu, Lin Ma, Andrew H. Beck, Steven R. Cummings, Karla Kerlikowske, Celine M. Vachon

Characteristics of the study populations.

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ARTICLE ABSTRACT

Background: Mammographic density (MD) is a strong breast cancer risk factor. We previously reported associations of percent mammographic density (PMD) with larger and node-positive tumors across all ages, and estrogen receptor (ER)–negative status among women ages <55 years. To provide insight into these associations, we examined the components of PMD [dense area (DA) and nondense area (NDA)] with breast cancer subtypes.Methods: Data were pooled from six studies including 4,095 breast cancers and 8,558 controls. DA and NDA were assessed from digitized film-screen mammograms and standardized across studies. Breast cancer odds by density phenotypes and age according to histopathologic characteristics and receptor status were calculated using polytomous logistic regression.Results: DA was associated with increased breast cancer risk [OR for quartiles: 0.65, 1.00 (Ref), 1.22, 1.55; Ptrend <0.001] and NDA was associated with decreased risk [ORs for quartiles: 1.39, 1.00 (Ref), 0.88, 0.72; Ptrend <0.001] across all ages and invasive tumor characteristics. There were significant trends in the magnitude of associations of both DA and NDA with breast cancer by increasing tumor size (Ptrend < 0.001) but no differences by nodal status. Among women <55 years, DA was more strongly associated with increased risk of ER+ versus ER− tumors (Phet = 0.02), while NDA was more strongly associated with decreased risk of ER− versus ER+ tumors (Phet = 0.03).Conclusions: DA and NDA have differential associations with ER+ versus ER− tumors that vary by age.Impact: DA and NDA are important to consider when developing age- and subtype-specific risk models. Cancer Epidemiol Biomarkers Prev; 24(5); 798–809. ©2015 AACR.

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