Author Interviews, Infections, OBGYNE, Pharmaceutical Companies / 21.01.2021
Oteseconazole: Mycovia Pharmaceuticals Reports Positive Phase 3 Data for their Oral Drug for Recurrent Vaginal Yeast Infections
MedicalResearch.com interview with:
Dr. Stephen Brand, Chief Development Officer
Mycovia Pharmaceuticals
Dr. Stephen Brand discusses the results of Mycovia’s three Phase 3 studies for recurrent vaginal yeast infections (RVVC )and what’s next for the company.
MedicalResearch.com: What is the background for these Phase 3 studies?
Answer: Our Phase 3 clinical program for our oral therapy oteseconazole was comprised of three trials enrolling more than 870 patients at 176 sites across 11 different countries.
Two of these trials, referred to as VIOLET were identical Phase 3 randomized, double-blind, placebo-controlled clinical trials to evaluate the safety of oteseconazole and its ability to prevent episodes of recurrent vulvovaginal candidiasis (RVVC), commonly referred to as chronic yeast infection. The trials took place over 48 weeks in subjects with an established disease history of at least three episodes of acute VVC in the past 12 months. More than 650 patients randomized at 125 sites across 11 countries.
The VIOLET trials consisted of two parts: During the first part of the study which lasted two weeks after patients presented with an active VVC episode, patients were treated with three sequential 150mg doses of fluconazole. The second part consisted of 12 weeks, when the patient either took oteseconazole 150mg or a placebo once weekly (according to a random assignment), and then a 36-week follow-up period.
In addition, subjects participating in the VIOLET trials in the U.S. who remained infection-free at their Week 48 visit were offered the opportunity to participate in an extension study and are being monitored for an additional 48 weeks to further define the long-term protection profile of oteseconazole. Eighty-five subjects are enrolled.
The third Phase 3 study, called ultraVIOLET, was designed to complement and extend VIOLET as a 50-week randomized, double-blind, placebo-controlled clinical trial to evaluate the safety and efficacy of oteseconazole. In addition the study compared the effectiveness of oteseconazole compared to fluconazole, the current standard of care, to treat an acute VVC infection in the RVVC population. A total of 220 patients were randomized at 51 sites in the U.S. for the ultraVIOLET trial.
The ultraVIOLET trial consisted of two parts: In the first part of the study RVVC subjects presenting with an active infection were randomized to receive either 2 days of dosing with oteseconazole or 3 sequential 150 mg doses of fluconazole (every 72 hours). The second part consisted of 11 weeks, when the patient took either oteseconazole or a placebo weekly (according to the random assignment from the first part of the study), and then a 37-week follow-up period.
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Marco Taglietti, M.D.
President and Chief Executive Officer
SCYNEXIS Inc
Dr. Taglietti discusses SCYNEXIS’ announcement of positive results from its second Phase 3 study investigating the safety and efficacy of oral ibrexafungerp as a treatment for vaginal yeast infection.
MedicalResearch.com: What is the background for this study?
Response: The VANISH-306 study is one of two Phase 3 randomized, double-blind, placebo-controlled, multi-center studies designed to demonstrate the superiority of oral ibrexafungerp to placebo as a treatment of vaginal yeast infections, also known as vulvovaginal candidiasis. Ibrexafungerp is a novel oral/intraveneous broad-spectrum antifungal in late stage development for multiple indications, from the treatment and prevention of vaginal yeast infections to life-threatening invasive fungal infections in the hospital setting.
The VANISH-306 study was conducted in 42 centers in the US and EU and enrolled 449 patients. Patients were randomized to oral ibrexafungerp (two doses of 300mg taken 12 hours apart for one day) or placebo in a 2:1 ratio The primary endpoints included clinical cure rate, defined as the complete resolution of all signs and symptoms at the test-of-cure visit (Day-10) and secondary endpoints included mycological eradication and change in signs and symptoms scores compared to baseline at both day 10 and follow-up visit (Day-25). The VANISH-306 study reported positive topline data which showed that 63.3% of ibrexafungerp-treated patients saw a complete resolution of signs and symptoms 10 days following a single day dose of ibrexafungerp.
The first study in the VANISH program was VANISH-303, a US-based study, had an identical design to the VANISH-306 study. The VANISH-303 study reported positive topline data in November 2019 which showed that 50.5% of ibrexafungerp-treated patients saw a complete resolution of signs and symptoms 10 days following a single day dose of ibrexafungerp.
Both VANISH studies showed a highly significant statistical difference in the primary and secondary efficacy endpoints. The product was well tolerated.
