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Hyloris Pharmaceuticals SA Announces Start of Phase 2 Study of Miconazole-Domiphen Bromide Vaginal Cream in Vulvovaginal Candidiasis

11/02/2021 | 01:00am
Hyloris Pharmaceuticals SA announced that the first patient has been enrolled in the Phase 2 dose-finding study of Miconazole-Domiphen Bromide (MCZ-DB), a novel dual-mode-of-action vaginal cream for the treatment of recurring vulvovaginal candidiasis (rVCC) that is being developed in partnership with Purna Female Health. Recurring VVC is also known as chronic yeast infection and is defined as four or more symptomatic acute episodes of yeast infection per year. The Phase 2 study is a multi-centre, randomised, double-blind, active-controlled study (3 study arms), which is expected to enrol up to 90 female subjects with confirmed acute VVC, aged 18-50 years. The primary objectives at Day 15 include the efficacy and safety of two different doses of MCZ nitrate 2% + DB (MCZ-DB), administered once per day for 7 days, as compared to MCZ nitrate 2% (Gyno-Daktarin?) alone. In addition, the study aims to determine the most optimal dose of DB after 7-day treatment of VVC, by assessing efficacy and safety during 12 weeks of follow-up from start of treatment. The secondary objectives include the efficacy of MCZ-DB compared to MCZ nitrate 2% alone in the treatment of VVC based on the cure rate of VVC at Day 29, Day 57, and Day 85, as well as on patient-reported outcomes through Week 12. The exploratory objectives include pharmacokinetics (PK) of MCZ-DB at Day 7 before and after administration; the efficacy of MCZ-DB compared to MCZ nitrate 2% alone on the recurrence of VVC through Week 12; and quality of life evaluations. The study will be conducted in at least 4 study sites, all located in Belgium. VVC is a vaginal fungal infection commonly caused by the yeast Candida albicans, affecting as many as one in every two women during their life, with about 175 million units sold per year globally. Up to 20% of VVC patients develop severe to recurrent VVC where reinfection occurs more than four times per year. These are long-term conditions that cause significant pain and distress, with an estimated economic burden from lost productivity of up to $14.39 billion annually by 2030.2 There is a high unmet need for novel treatment options in severe and rVVC as current standard of care treatments have significant drawbacks, including lack of efficacy, the development of drug resistance due to continued use and liver toxicity. Preclinical studies have demonstrated that the activity of Miconazole (MCZ), the current topical standard of care, when combined with the Miconazole potentiator Domiphen Bromide, can combat the occurrence and recurrence of mucosal biofilm-related vaginal Candida infections.4 MCZ and DB work synergistically where DB increases the permeability of the plasma membrane and the vacuolar membrane of Candida spp., and MCZ acting fungicidal, thereby effectively destroying fungal activity and preventing further fungal growth. The synergistic mode-of-action of topical MCZ-DB has the potential to be effective against azole-resistant infections, possibly addressing the high unmet needs in recurring VVC.
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