ospemifene and Venous-Thromboembolism

Vulvovaginal atrophy (VVA) is an underdiagnosed and undertreated chronic condition resulting in physiological and histological changes in the genitourinary tract of postmenopausal women. Treatment of moderate to severe VVA includes local estrogens, dehydroepiandrosterone (DHEA) and oral ospemifene, a third-generation selective estrogen receptor modulator (SERM). Due to venous thromboembolism (VTE) safety concerns classically associated with the SERM class, and as part of its original marketing authorization approval (MAA), the European Medicines Agency (EMA) requested the performance of a 5-year post-authorization safety study (PASS) to study the incidence rate of VTE among women receiving ospemifene. The results have led to important regulatory changes to ospemifene's labeling, extending its indication and eliminating concerted risk management measures. A panel of experts discussed and reached consensus on the impact of these regulatory changes on clinical practice, reflecting on the reassurance of ospemifene's benefit-risk balance and recommending its positioning as a first-line pharmacological treatment option for moderate to severe VVA together with local therapies. In a scenario where different treatments present similar efficacy and safety profiles, a shared decision between clinician and patient, according to her needs and preferences over time, is fundamental to improve adherence and persistence with sequential treatment, contributing to the achievement of health outcomes.

Topics: Atrophy; Dyspareunia; Expert Testimony; Female; Humans; Postmenopause; Selective Estrogen Receptor Modulators; Tamoxifen; Vagina; Venous Thromboembolism; Vulva

Ospemifene is a nonsteroidal selective estrogen receptor modulator (SERM) for the treatment of moderate symptomatic vulvar and vaginal atrophy (VVA) due to menopause. A postauthorization safety study is currently examining the incidence of venous thromboembolism (VTE) among postmenopausal women receiving ospemifene or other SERM (raloxifene, bazedoxifene, or tamoxifen, for noncancer indications), or with untreated VVA.. This interim analysis used the US MarketScan Commercial and Medicare Supplemental claims database from 2013 to 2017 to identify incident VTE. The incidence rate and 95% confidence interval of VTE during the first continuous course of treatment (or continuous untreated time for the untreated cohort) were calculated for each cohort overall and by age group, with sensitivity analyses examining incidence in the short term (up to 90 days) and long term (all available follow-up, regardless of treatment changes).. Analyses included 8,188 ospemifene users, 11,777 other SERM users, and 220,242 women with untreated VVA. The incidence per 1,000 person-years and 95% confidence interval of VTE were 3.7 (1.7-7.1) for ospemifene, 11.5 (8.9-14.6) for other SERM, and 11.3 (10.8-11.7) for untreated VVA. Stratification by age and altering the time frame for analysis produced results with similar patterns to the primary analysis.. This interim analysis of an ongoing study suggests a favorable safety profile for ospemifene with respect to VTE. Comparative analyses with covariate adjustment will be performed when data accrual is complete.

Topics: Aged; Atrophy; Female; Humans; Incidence; Medicare; Postmenopause; Selective Estrogen Receptor Modulators; Tamoxifen; United States; Vagina; Venous Thromboembolism; Vulva

Topics: Atrophy; Female; Humans; Incidence; Postmenopause; Selective Estrogen Receptor Modulators; Tamoxifen; Venous Thromboembolism; Venous Thrombosis; Vulva