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24 Jun 2019

Case Study: Vyleesi™ (Bremelanotide Injection) for HSDD in Premenopausal Women

U.S. Food and Drug Administration (FDA) has approved Vyleesi™ (bremelanotide injection), a melanocortin receptor agonist, to treat acquired, generalized hypoactive sexual desire disorder (HSDD) in premenopausal women.

HSDD is characterized by low sexual desire that causes distress or interpersonal difficulty and is not due to a co-existing medical or psychiatric condition, problems within the relationship, or the effects of a medication or other drug substance.

HSDD is thought to have a neurobiologic basis which is supported by brain imaging studies. When study participants were shown visual sexual stimuli, there was a difference in the brain activation patterns between women with HSDD compared to those women without HSDD.

Clinical Basis of approval:

he FDA approval of Vyleesi is based upon data from approximately 1,200 women in two pivotal, double-blind placebo controlled Phase 3 trials (RECONNECT). In both clinical trials, Vyleesi met the pre-specified co-primary efficacy endpoints of improvement in desire and reductions in distress as measured by validated patient-reported outcome instruments. Upon completion of the trial, women had the option to continue in a voluntary open-label safety extension study for an additional 12 months. Nearly 80 percent of patients who completed the Phase 3 trials elected to remain in the open-label portion of the study, where all of these patients received Vyleesi.

In the pivotal trials, the most common adverse events were nausea, flushing, injection site reactions, and headache. The majority of events were reported to be transient and mild-to-moderate in intensity. In clinical trials, Vyleesi caused small, transient increases in blood pressure, and is contraindicated in women with uncontrolled high blood pressure or known cardiovascular risk.

Indication:

VYLEESI is indicated for the treatment of premenopausal women with acquired, generalized hypoactive sexual desire disorder (HSDD), as characterized by low sexual desire that causes marked distress or interpersonal difficulty and is NOT due to:

A co-existing medical or psychiatric condition,
Problems with the relationship, or
The effects of a medication or drug substance.
Acquired HSDD refers to HSDD that develops in a patient who previously had no problems with sexual desire. Generalized HSDD refers to HSDD that occurs regardless of the type of stimulation, situation or partner.

Limitations of Use:

VYLEESI is not indicated for the treatment of HSDD in postmenopausal women or in men.
VYLEESI is not indicated to enhance sexual performance.
Vyleesi is protected by a number of U.S. and foreign patents and applications that are owned by Palatin Technologies, Inc. Certain of the patents include claims directed to the Vyleesi drug composition and methods of use thereof with terms expiring in 2020, and other patents include claims directed to methods of treating female sexual dysfunction by subcutaneous administration of compositions that include Vyleesi with terms expiring in 2033.

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