What happens after menopause? (WHAM): A prospective controlled study of depression and anxiety up to 12 months after premenopausal risk-reducing bilateral salpingo-oophorectomy.

Objective: Risk-reducing bilateral salpingo-oophorectomy (RRBSO) substantially reduces ovarian cancer risk in women with pathogenic gene variants and is generally recommended by age 34-45 years. Natural menopause is a vulnerable period for mood disturbance, but the risk of depression and anxiety in the first 12 months after RRBSO and potential modifying effect of hormone therapy are uncertain.
Methods: Prospective controlled observational study of 95 premenopausal women planning RRBSO and a Comparison group of 99 premenopausal women who retained their ovaries,- 95% of whom were at population level risk of ovarian cancer. Clinically significant symptoms of depression and anxiety were measured using standardised instruments at baseline, 3, 6 and 12 months. Chi-square tests and adjusted logistic regression models compared differences between groups.
Results: Baseline symptoms and previous depression or anxiety did not differ between groups. At 3 months after RRBSO clinically significant depressive symptoms were doubled (14.5% vs 27.1%, p = 0.010), which persisted at 12 months. Depressive symptoms were stable in comparisons. At 3 months after RRBSO, clinically significant anxiety symptoms almost trebled (6.1% vs 17.7%, p = 0.014) before plateauing at 6 months and returning to baseline at 12 months. Compared to comparisons, RRBSO participants were at 3.0-fold increased risk of chronic depressive symptoms (Wald 95% CI 1.27-7.26), 2.3-fold increased risk of incident depression (95% Wald CI 1.08-5.13) and 2.0-fold increase of incident anxiety (Wald 95% CI 0.78-5.00). Depression and anxiety were slightly more common in Hormone Therapy users after RRBSO vs non-users.
Conclusions: RRBSO leads to a rapid increase in clinically significant depressive and anxiety symptoms despite Hormone Therapy use.
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