Long and irregular menstrual cycles, polycystic ovary syndrome, and ovarian cancer risk in a population-based case-control study

International Journal of Cancer. Journal International Du Cancer
Holly R HarrisKathryn L Terry

Abstract

Long and irregular menstrual cycles, a hallmark of polycystic ovary syndrome (PCOS), have been associated with higher androgen and lower sex hormone binding globulin levels and this altered hormonal environment may increase the risk of specific histologic subtypes of ovarian cancer. We investigated whether menstrual cycle characteristics and self-reported PCOS were associated with ovarian cancer risk among 2,041 women with epithelial ovarian cancer and 2,100 controls in the New England Case-Control Study (1992-2008). Menstrual cycle irregularity, menstrual cycle length, and PCOS were collected through in-person interview. Unconditional logistic regression models were used to calculate odds ratios (OR) and 95% confidence intervals (95% CIs) for ovarian cancer risk overall, and polytomous logistic regression to evaluate whether risk differed between histologic subtypes. Overall, we observed no elevation in ovarian cancer risk for women who reported periods that were never regular or for those reporting a menstrual cycle length of >35 days with ORs of 0.87 (95% CI = 0.69-1.10) and 0.83 (95% CI = 0.44-1.54), respectively. We observed no overall association between self-reported PCOS and ovarian cancer (OR = 0.97; 95% CI = 0.61-1.56...Continue Reading

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Citations

Nov 1, 2017·Gynecological Endocrinology : the Official Journal of the International Society of Gynecological Endocrinology·Peipei Jin, Yongyong Xie
Jan 5, 2018·Gynecological Endocrinology : the Official Journal of the International Society of Gynecological Endocrinology·YuanYuan ZhangYu Wang
Feb 28, 2020·Gynecological Endocrinology : the Official Journal of the International Society of Gynecological Endocrinology·Blazej MeczekalskiFaustino R Pérez-López
Feb 13, 2020·Current Medical Research and Opinion·Ilaria SoaveDonatella Caserta
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Jun 18, 2017·Fertility Research and Practice·Holly R Harris, Kathryn L Terry
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