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Hormone replacement therapy doesn't lead to breast cancer reoccurrence
Overview
A new paper in the Journal of the National Cancer Institute, published by Oxford University Press, finds that menopausal hormone therapy for breast cancer survivors is not associated with breast cancer reoccurrence, despite worries among some researchers and physicians.
Hot flashes and night sweats, as well as vaginal dryness and urinary tract infections, plague breast cancer survivors frequently. These symptoms worsen the quality of life and can lead patients to discontinue therapy. These symptoms may be alleviated by vaginal estrogen therapy or menopausal hormone therapy. However, the safety of systemic and vaginal estrogen use among breast cancer survivors, particularly those with estrogen receptor-positive disease, has been unclear.
Among 8461 women who had not received vaginal estrogen therapy or menopausal hormone therapy before a breast cancer diagnosis, 1957 and 133 used vaginal estrogen therapy or menopausal hormone therapy, respectively, after diagnosis. The researchers here found no increase in the risk of recurrence or mortality for those who received either vaginal estrogen therapy or menopausal hormone therapy.
This large cohort study helps to inform the nuanced discussions between clinicians and breast cancer survivors about the safety of vaginal estrogen therapy, These results suggest that breast cancer survivors on tamoxifen with severe genitourinary symptoms can take vaginal estrogen therapy without experiencing an increase in their risk for breast cancer recurrence. However, caution is still advised when considering vaginal estrogen for breast cancer survivors on aromatase inhibitors, or when considering menopausal hormonal therapy.
Reference: "Hormone replacement therapy doesn't lead to breast cancer reoccurrence"; OXFORD UNIVERSITY PRESS USA, Journal of the National Cancer Institute, DOI: 10.1093/jnci/djac112
Speakers
Isra Zaman
B.Sc Life Sciences, M.Sc Biotechnology, B.Ed