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Erschienen in: Cancer Causes & Control 3/2016

01.03.2016 | Original paper

Polycystic ovarian syndrome (PCOS), related symptoms/sequelae, and breast cancer risk in a population-based case–control study

verfasst von: Jayeon Kim, Jennifer E. Mersereau, Nikhil Khankari, Patrick T. Bradshaw, Lauren E. McCullough, Rebecca Cleveland, Sumitra Shantakumar, Susan L. Teitelbuam, Alfred I. Neugut, Ruby T. Senie, Marilie D. Gammon

Erschienen in: Cancer Causes & Control | Ausgabe 3/2016

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Abstract

Purpose

Despite the overlap between the clinical symptoms/sequelae of polycystic ovarian syndrome (PCOS) and many known reproductive risk factors for breast cancer, the relationship between PCOS and breast cancer remains unclear, possibly because of the complex heterogeneity and challenges in diagnosing PCOS over time. We hypothesized that PCOS, specific PCOS-related symptoms/sequelae, or clusters of PCOS-related symptoms/sequelae may be differentially associated with pre- versus postmenopausal breast cancer risk.

Materials and methods

Cases were 1,508 women newly diagnosed with a first primary in situ or invasive breast, and the 1,556 population-based controls were frequency-matched by age.

Results

History of physician-diagnosed PCOS was reported by 2.2 % (n = 67), among whom oral contraceptive (OC) use, irregular menstruation, and infertility due to ovulatory dysfunction were common. Using unconditional logistic regression, adjusted odds ratios (95 % CI) for PCOS were increased for premenopausal [2.74 (1.13, 6.63)], but not postmenopausal breast cancer [0.87 (0.44, 1.71)]. We used cluster analysis to investigate whether risk among all women varied by PCOS-related symptoms/sequelae, such as reproductive irregularities, OC use, and components of insulin resistance. In the cluster analysis, odds ratios were elevated among premenopausal women who had a history of OC use and no ovulatory dysfunction [1.39 (1.03, 1.88)], compared to those with fewer number of PCOS-related symptoms/sequelae.

Conclusion

PCOS and associated PCOS-related symptoms/sequelae including OC use may play a role in the development of premenopausal breast cancer. Our findings require confirmation in studies with a larger number of premenopausal women with systematically applied diagnostic criteria for PCOS.
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Metadaten
Titel
Polycystic ovarian syndrome (PCOS), related symptoms/sequelae, and breast cancer risk in a population-based case–control study
verfasst von
Jayeon Kim
Jennifer E. Mersereau
Nikhil Khankari
Patrick T. Bradshaw
Lauren E. McCullough
Rebecca Cleveland
Sumitra Shantakumar
Susan L. Teitelbuam
Alfred I. Neugut
Ruby T. Senie
Marilie D. Gammon
Publikationsdatum
01.03.2016
Verlag
Springer International Publishing
Erschienen in
Cancer Causes & Control / Ausgabe 3/2016
Print ISSN: 0957-5243
Elektronische ISSN: 1573-7225
DOI
https://doi.org/10.1007/s10552-016-0716-7

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