Pharmacokinetics, pharmacodynamics and clinical efficacy of ospemifene for the treatment of dyspareunia and genitourinary syndrome of menopause

ABSTRACT

Introduction: Ospemifene is a selective estrogen receptor modulator recently approved by the FDA for the treatment postmenopausal women experiencing moderate-to-severe dyspareunia and by the EMA for the treatment of moderate-to-severe symptomatic genitourinary syndrome of menopause (GSM) in women who are not suitable candidates for local vaginal estrogen therapy.

Areas covered: This review offers an explanation of the pharmacodynamics and of the pharmacokinetics of ospemifene, and gives readers a complete overview of Phase II and III studies on the clinical efficacy, tolerability and safety of this agent in the setting of GSM.

Expert opinion: Ospemifene is efficacious for improving vaginal dryness or dyspareunia as the patient-identified most bothersome symptom, and Phase III clinical trials (4648 patients) have shown good efficacy in terms of improvement of objective and subjective signs and measures of GSM in postmenopausal women. Future studies with a long-term follow-up are required to better elucidate its safety profile. In particular, on the basis of preclinical and early clinical findings of antagonistic to neutral effect on breast tissue, more research is needed to assess the treatment with ospemifene in breast cancer survivors.

KEYWORDS:

• Atrophy
• dyspareunia
• genitourinary syndrome
• menopause
• ospemifene
• pharmacokinetics
• pharmacodynamics
• clinical efficacy

Declaration of interest

The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.

Additional information

Funding

This paper was not funded.