VIVUS, Inc. (NASDAQ: VVUS), a pharmaceutical company dedicated to the development and commercialization of novel therapeutic products, today announced it has initiated a second pivotal Phase 3 study of avanafil, its investigational new drug for the treatment of erectile dysfunction (ED). Avanafil is a next-generation, fast-acting, selective, investigational oral phosphodiesterase type 5 (PDE5) inhibitor.
The study, REVIVE-Diabetes (TA-302), is a multicenter, randomized, double-blind, placebo-controlled trial and will evaluate the safety and efficacy of avanafil in the treatment of ED in men with type 1 or type 2 diabetes. Subjects who meet the inclusion criteria will undergo a four-week non-treatment run-in period followed by 12 weeks of treatment. The co-primary endpoints of the study will be improvement in erectile function as measured by changes in the sexual encounter profile (SEP) questions 2 and 3, and improvement in erectile function as measured by the erectile function domain score of the International Index of Erectile Function (IIEF). The SEP is a self-administered patient diary and the IIEF is a patient questionnaire; both are used as standard diagnostic tools to assess erectile dysfunction. REVIVE-Diabetes is the second of three planned pivotal studies in the avanafil Phase 3 development program.
"There has not been a new treatment option for men with ED in more than five years," stated Andrew McCullough, MD, associate professor of clinical urology, NYU School of Medicine and REVIVE-Diabetes clinical investigator. Early data suggest that avanafil may provide a fast-acting therapy with a short half-life, which, if approved, may represent a noteworthy advance for the millions of men living with ED and searching for new options."
Diabetes is one of the most common causes of ED; clinical data suggest that at least 50 percent of diabetic men will experience difficulties with erectile function. Men with diabetes are up to three times more likely to have ED than non-diabetic men and appear to experience it earlier in life. The significance of ED increases with the severity and duration of diabetes as well as with advanced age.
"Evidence suggests that there is room for significant improvement in the current treatment of ED," Charles Bowden, MD, senior director, clinical development for VIVUS. "We’re pleased with the promising results demonstrated thus far with avanafil, and with the momentum behind our Phase 3 program. Enrollment in our first pivotal study, REVIVE, initiated in December to evaluate avanafil in ED, is ongoing. REVIVE-Diabetes will be conducted at many of the same sites as REVIVE."
Buy generic cipro It is expected that this study will enroll approximately 375 patients at about 30 sites in the United States. Subjects are instructed to attempt sexual intercourse 30 minutes after taking avanafil, with no restrictions on food or alcohol consumption. REVIVE-Diabetes will study two doses of avanafil. More information about the trial can be found at
As previously disclosed, VIVUS has entered into a $30 million funding collaboration with Deerfield Management to fund the Phase 3 program.
Erectile dysfunction, or ED, the inability to attain or maintain an erection sufficient for intercourse, was reported by 35% of men between the ages of 40 to 70 in the United States, according to an independent study, with the incidence increasing with age. ED, frequently associated with vascular problems, is particularly common in men with diabetes and in those who have had a radical prostatectomy for prostate cancer. PDE5 inhibitors such as sildenafil citrate (Viagra®), vardenafil (Levitra®) and tadalafil (Cialis®), which inhibit the breakdown of cyclic guanosine monophosphate, have been shown to be effective treatments for ED.
Worldwide sales in 2008 of PDE5 inhibitor products for ED were estimated, based on reports from the companies that market these products, to be in excess of $3.7 billion, including approximately $1.9 billion in reported sales of Viagra, approximately $1.5 billion in reported sales of Cialis and approximately $300 million in reported sales of Levitra. VIVUS believes that based on the aging baby boomer population and the desire to maintain an active sexual lifestyle, the market for PDE5 inhibitors will continue to grow.
VIVUS previously reported positive results from the Phase 2 studies of avanafil. Following a four-week, non-treatment, run-in period, 284 patients were treated for 12 weeks with placebo or avanafil at various doses. The primary endpoints used to assess treatment efficacy included the percentage of erections sufficient for vaginal penetration and the percentage of erections lasting long enough for successful intercourse. Avanafil produced erections sufficient for vaginal penetration on 76, 79, 80 and 84 percent of sexual attempts on the 50, 100, 200 and 300 mg doses, respectively (pBuy generic cialis | Buy propecia without prescription | generic ultram online buy