Holly R Harris, Kimberly Lind, Sable Fest, Cynthia A Thomson, Nazmus Saquib, Aladdin H Shadyab, Peter F Schnatz, Rogelio Robles-Morales, Lihong Qi, Howard D Strickler, Denise J Roe, Leslie V Farland
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引用次数: 0
Abstract
Purpose: There is a consistent relationship with greater ovulation frequency and increased risk of ovarian cancer. However, prior research on infertility, which may be associated with ovulation frequency through multiple mechanisms, and ovarian cancer has yielded conflicting results, possibly due to prior research conflating fertility treatment with infertility and restricting follow-up to premenopausal cases. Our objective was to determine the association between infertility and risk of postmenopausal ovarian cancer, overall and by histotype, in a population that had not received treatment with IVF.
Methods: We utilized data from the Women's Health Initiative (n = 112,925 postmenopausal participants) with over 25 years of follow-up. At baseline, participants were asked whether they had ever tried to become pregnant for more than one year without becoming pregnant and whether a reason was found. Cox proportional hazards models were used to calculate hazard ratios (HRs) of incident adjudicated ovarian cancer comparing participants with a history of infertility to fertile participants overall and by histotype.
Results: 17% of participants reported a history of infertility at baseline and 1,109 ovarian cancer cases were diagnosed during follow-up. No statistically significant association was observed between infertility and risk of any ovarian cancer (HR: 1.09, 95% CI 0.92-1.29), but those reporting infertility had a 90% higher risk of endometrioid and clear cell ovarian cancers (HR: 1.90 95% CI 1.09-3.34) compared to fertile participants. The reported reason(s) for infertility had no discernable impact on these associations.
Conclusions: Infertility may be associated with clear cell and endometrioid ovarian cancer but not other ovarian tumor histotypes.
期刊介绍：
Cancer Causes & Control is an international refereed journal that both reports and stimulates new avenues of investigation into the causes, control, and subsequent prevention of cancer. By drawing together related information published currently in a diverse range of biological and medical journals, it has a multidisciplinary and multinational approach.
The scope of the journal includes: variation in cancer distribution within and between populations; factors associated with cancer risk; preventive and therapeutic interventions on a population scale; economic, demographic, and health-policy implications of cancer; and related methodological issues.
The emphasis is on speed of publication. The journal will normally publish within 30 to 60 days of acceptance of manuscripts.
Cancer Causes & Control publishes Original Articles, Reviews, Commentaries, Opinions, Short Communications and Letters to the Editor which will have direct relevance to researchers and practitioners working in epidemiology, medical statistics, cancer biology, health education, medical economics and related fields. The journal also contains significant information for government agencies concerned with cancer research, control and policy.
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