Flibanserin in Men Receiving Androgen Suppression for Prostate Cancer

Summary

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More than 40,000 men with prostate cancer in the United States will begin androgen deprivation therapy (ADT) each year. ADT is an important part of treatment, because it improves survival for men with metastatic or high-risk localized disease, and reduces rates of biochemical progression for men wit...

More than 40,000 men with prostate cancer in the United States will begin androgen deprivation therapy (ADT) each year. ADT is an important part of treatment, because it improves survival for men with metastatic or high-risk localized disease, and reduces rates of biochemical progression for men with intermediate-risk localized disease who receive radiation. The most common ADT agents modulate gonadotropin-releasing hormone to suppress the downstream testosterone production, resulting in testosterone levels similar to those observed following surgical castration (<20 ng/dL). Since male sexual interest is highly correlated with serum testosterone levels, loss of sexual interest is nearly universal among men who receive ADT.Sexual dysfunction is the most common complaint among men with prostate cancer and contributes to lower overall quality of life (QoL) experienced by men receiving ADT. Furthermore, the loss of sexual interest experienced during ADT is highly distressing for men with prostate cancer and their partners, which contributes additional psychological morbidity in these patients. Flibanserin is approved for treatment of female hypoactive sexual desire disorder, and the safety profile of 100mg daily flibanserin is well described in premenopausal women.The safety profile of flibanserin in healthy men has been assessed in multiple phase I clinical trials, but has not been evaluated among men receiving ADT for prostate cancer. This is a phase II randomized, double-blinded, placebo-controlled clinical trial designed to provide an initial estimate of the efficacy of flibanserin to promote sexual interest in men with prostate cancer receiving androgen suppression therapy and to confirm the safety profile. This study will take place at a single academic comprehensive cancer center. Following confirmation of eligibility, participants who are enrolled in this study are randomized to receive daily flibanserin 100mg or placebo for a 12-week period.

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