Study of Efficacy, Cycle Control, and Safety of a NES-E2 Contraceptive Vaginal Ring

The total duration of the study for each participant is expected to be approximately 13.5-15.5 months: including screening and enrollment (up to 8 weeks), 12 months of participation, and a post-removal follow up period removal of at least 17 days. After enrollment, subject visits occur at day 31, 92, 183, 274, and 364 with telephone calls at day 60, 120, 150, 210, 240, 300, and 330. Subjects will use a home pregnancy test 17 days post-removal of the ring and will call the site report the result and for safety follow-up. Another phone call will be required after that if the subject chooses not to being a hormonal contraceptive; this call will occur at the time of the subject's first spontaneous menses. Subject recruitment is expected to begin Q1 (in the first quarter of) 2018 and is planned to continue through Q1 2019. However, if the enrollment rate declines, the enrollment period may be extended beyond this date. If this enrollment timeline is met, all subjects should finish active treatment by approximately the end of Q1 2020. The end of the study will occur when the last subject to be enrolled has completed her post-removal telephone call(s). Preliminary results of the study are expected to be available Q3 of 2020 based on the current study plan.