Safety and Efficacy of a Contraceptive Vaginal Ring Delivering Nestorone® and Ethinyl Estradiol

Summary

The purpose of this 1-year study is to evaluate the efficacy and safety of a new contraceptive vaginal ring (CVR) delivering low doses of Nestorone (NES), a new, nonandrogenic progestin, and ethinyl estradiol (EE), an estrogen used in oral contraceptives. The CVR, which is made of silicone rubber, is designed to be used for 1 year (13 menstrual cycles) before replacement is required.

Timeline

Start

2005-12

Primary completion

2014-08

Completion

2014-08

Publications

• Plagianos MG, Ramanadhan S, Merkatz RB, Brache V, Friedland BA, Haddad LB. Risk factors for and outcomes of ring expulsions with a 1-year contraceptive vaginal system. Am J Obstet Gynecol. 2024 May;230(5):548.e1-548.e8. doi: 10.1016/j.ajog.2024.01.020. Epub 2024 Jan 29.
• Jensen JT, Archer DF, Westhoff CL, Nelson AL, Graham S, Bernick B. Satisfaction with a Segesterone Acetate and Ethinyl Estradiol Contraceptive Vaginal System Among Recent Oral Contraceptive or Hormonal Contraceptive Vaginal Ring Users. J Womens Health (Larchmt). 2023 Jul;32(7):808-815. doi: 10.1089/jwh.2022.0264. Epub 2023 May 29.
• Vieira CS, Fraser IS, Plagianos MG, Burke AE, Westhoff CL, Jensen J, Brache V, Bahamondes L, Merkatz R, Sitruk-Ware R, Blithe DL. Bleeding profile associated with 1-year use of the segesterone acetate/ethinyl estradiol contraceptive vaginal system: pooled analysis from Phase 3 trials. Contraception. 2019 Dec;100(6):438-444. doi: 10.1016/j.contraception.2019.07.145. Epub 2019 Aug 6.
• Archer DF, Merkatz RB, Bahamondes L, Westhoff CL, Darney P, Apter D, Jensen JT, Brache V, Nelson AL, Banks E, Bartfai G, Portman DJ, Plagianos M, Dart C, Kumar N, Creasy GW, Sitruk-Ware R, Blithe DL. Efficacy of the 1-year (13-cycle) segesterone acetate and ethinylestradiol contraceptive vaginal system: results of two multicentre, open-label, single-arm, phase 3 trials. Lancet Glob Health. 2019 Aug;7(8):e1054-e1064. doi: 10.1016/S2214-109X(19)30265-7. Epub 2019 Jun 20.
• Stifani BM, Plagianos M, Vieira CS, Merkatz RB. Factors associated with nonadherence to instructions for using the Nestorone(R)/ethinyl estradiol contraceptive vaginal ring. Contraception. 2018 May;97(5):415-421. doi: 10.1016/j.contraception.2017.12.011. Epub 2017 Dec 18.
• Huang Y, Merkatz RB, Hillier SL, Roberts K, Blithe DL, Sitruk-Ware R, Creinin MD. Effects of a One Year Reusable Contraceptive Vaginal Ring on Vaginal Microflora and the Risk of Vaginal Infection: An Open-Label Prospective Evaluation. PLoS One. 2015 Aug 12;10(8):e0134460. doi: 10.1371/journal.pone.0134460. eCollection 2015.
• Merkatz RB, Plagianos M, Hoskin E, Cooney M, Hewett PC, Mensch BS. Acceptability of the Nestorone(R)/ethinyl estradiol contraceptive vaginal ring: development of a model; implications for introduction. Contraception. 2014 Nov;90(5):514-21. doi: 10.1016/j.contraception.2014.05.015. Epub 2014 Jun 2.

Drugs

Indications

No indication recorded.