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. 2023 Dec;129(12):1956-1967.
doi: 10.1038/s41416-023-02407-7. Epub 2023 Oct 21.

Menopausal hormone therapy use and risk of ovarian cancer by race: the ovarian cancer in women of African ancestry consortium

Affiliations

Menopausal hormone therapy use and risk of ovarian cancer by race: the ovarian cancer in women of African ancestry consortium

Jessica L Petrick et al. Br J Cancer. 2023 Dec.

Abstract

Background: Most studies examining post-menopausal menopausal hormone therapy (MHT) use and ovarian cancer risk have focused on White women and few have included Black women.

Methods: We evaluated MHT use and ovarian cancer risk in Black (n = 800 cases, 1783 controls) and White women (n = 2710 cases, 8556 controls), using data from the Ovarian Cancer in Women of African Ancestry consortium. Logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for the association of MHT use with ovarian cancer risk, examining histotype, MHT type and duration of use.

Results: Long-term MHT use, ≥10 years, was associated with an increased ovarian cancer risk for White women (OR = 1.38, 95%CI: 1.22-1.57) and the association was consistent for Black women (OR = 1.20, 95%CI: 0.81-1.78, pinteraction = 0.4). For White women, the associations between long-term unopposed estrogen or estrogen plus progesterone use and ovarian cancer risk were similar; the increased risk associated with long-term MHT use was confined to high-grade serous and endometroid tumors. Based on smaller numbers for Black women, the increased ovarian cancer risk associated with long-term MHT use was apparent for unopposed estrogen use and was predominately confined to other epithelial histotypes.

Conclusion: The association between long-term MHT use and ovarian cancer risk was consistent for Black and White women.

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Conflict of interest statement

ME Barnard reports personal fees from Epi Excellence LLC outside of the submitted work. The remaining authors declare no competing interests.

Figures

Fig. 1
Fig. 1. Forest plot of the study-specific odds ratios (ORs)a and 95% confidence intervals (CIs) for the association between ≥ 10 years of menopausal hormone therapy use (compared to never use) and ovarian cancer risk by race.
aORs are based on complete case analysis and adjusted for age at index (continuous), first degree family history of breast cancer (yes, no), first degree family history of ovarian cancer (yes, no), nulliparity (yes, no), education (high school graduate/GED or less, some college, college graduate, graduate/professional school), smoking status (ever, never), age at menopause (continuous), and pre-menopausal hysterectomy (yes, no).

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