Adhesion Evaluation of AG200-15: An Investigational Transdermal Contraceptive Delivery System

AG200-15, an investigational transdermal contraceptive delivery system or patch, is designed to be a low-dose, non-daily, combined hormonal contraceptive option for women. In this phase 1 study, the in vivo adhesion of the AG200-15 patch was compared to Xulane^®, the only contraceptive patch available in the USA.

This phase 1, randomized, open-label, single-dose, two-treatment, two-period crossover adhesion study compared the 7-day adhesion of the AG200-15 and Xulane contraceptive patches. Eighty-three women, ages 18 to 35 years old, with body mass index (BMI) ≥ 19 kg/m² and < 35 kg/m², and weight ≥ 48 kg and < 90 kg were enrolled. Trained study site personnel used a five-point scale to assess patch adhesion daily. A score of 0 reflected at least 90% adhesion; while a score of 4 represented complete detachment of the patch. The primary objective was to compare the adhesion properties of the two patches; AG200-15 would be considered statistically non-inferior to Xulane if the upper 95% confidence limit (CL) of the mean difference in adhesion scores was below + 0.15.

The overall mean (standard deviation) scores for AG200-15 (N = 78) and Xulane (N = 77) were 0.14 (0.28) and 0.39 (0.40), respectively (lower scores on the adhesion scale indicate better adhesion). The study demonstrated a difference in mean adhesion scores of - 0.24, meeting the prespecified non-inferiority criterion by demonstrating a one-sided upper CL of - 0.16. Thus, the in vivo adhesion of AG200-15 was shown to be non-inferior to that of Xulane. Most subjects experienced no skin irritation at the application site for either patch and no serious adverse event was reported in the study.

The in vivo adhesion of AG200-15 is non-inferior to that of Xulane on the basis of the prespecified criterion of the upper bound of the one-sided 95% CL for the mean adhesion score difference being below + 0.15. Both patches were generally well tolerated.

Agile Therapeutics, Inc.