A Phase 2 interventional study of NES-E2 CVR in Healthy Women and Female Contraception, sponsored by Premier Research. Completed at 11 sites in United States. Open to female participants aged 18 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-10-31.
Sponsored by Premier Research · Phase 2, Interventional, and Other
This will be a multi-site, open-label, randomized clinical trial. The investigators will randomize 300 eligible participants in a 1:1 ratio to two different treatment regimens that are to be followed when using a contraceptive vaginal ring delivering a daily dose of Nestorone® and estradiol (NES-E2 CVR).
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.
Premier Research is the lead sponsor of 9 studies on the registry; 1 is open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
to combined estrogen-progestin use including:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Investigational drug or device
A drug or device being studied in a clinical trial.
It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
HIV
The human immunodeficiency virus, which weakens the immune system.
Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraceptive vaginal ring delivering a daily dose of Nestorone® and estradiol (NES-E2 CVR) worn continuously for 91 days.
Drug: NES-E2 CVR
Contraceptive vaginal ring delivering a daily dose of Nestorone® and estradiol (NES-E2 CVR) worn for 91 days, but is removed for 2 days each month (days 29-30, 59-60, and 90-91).
Drug: NES-E2 CVR
NES-E2 CVR
Pregnancy Rate
Time frame: 1 year
Change in subjects' bleeding patterns for continuous vs cyclic use as compared to reported baseline bleeding patterns when the subjects were not on hormonal contraception using a bleeding questionnaire.
Time frame: 1 year
Difference in bleeding patterns for continuous vs cyclic use using a bleeding diary.
Time frame: 1 year
Incidence of adverse events, including serious adverse events
Time frame: 1 year
Summary of number of bleeding and spotting days per 30- and 90- day intervals using a bleeding diary.
Time frame: Every 30 and 90 days up to a total of 1 year
Summary of cyclic versus continuous use adverse events.
Time frame: 1 year
Summary of acceptability questionnaires.
Time frame: 1 year
Changes in complete blood count (CBC) labs from study entry (baseline)
Time frame: 1 year
Changes in fasting sodium from study entry (baseline)
Time frame: 1 year
Changes in fasting potassium from study entry (baseline)
Time frame: 1 year
Changes in fasting chloride from study entry (baseline)
Time frame: 1 year
Changes in fasting HCO3/CO2 from study entry (baseline)
Time frame: 1 year
Changes in fasting glucose from study entry (baseline)
Time frame: 1 year
Changes in fasting creatinine from study entry (baseline)
Time frame: 1 year
Changes in fasting blood urea nitrogen (BUN) from study entry (baseline)
Time frame: 1 year
Changes in fasting calcium from study entry (baseline)
Time frame: 1 year
Changes in fasting Gamma-glutamyl transferase or Gamma-glutamyl transpeptidase (GGTP) from study entry (baseline)
Time frame: 1 year
Changes in fasting protein from study entry (baseline)
Time frame: 1 year
Changes in fasting albumin from study entry (baseline)
Time frame: 1 year
Changes in fasting total bilirubin from study entry (baseline)
Time frame: 1 year
Changes in fasting direct bilirubin from study entry (baseline)
Time frame: 1 year
Changes in fasting alkaline phosphatase (ALPH) from study entry (baseline)
Time frame: 1 year
Changes in fasting Alanine Aminotransferase (ALT) from study entry (baseline)
Time frame: 1 year
Changes in fasting Aspartate Aminotransferase (AST) from study entry (baseline)
Time frame: 1 year
Changes in total cholesterol from study entry (baseline)
Time frame: 1 year
Changes in triglycerides from study entry (baseline)
Time frame: 1 year
Changes in high-density lipoprotein (HDL) from study entry (baseline)
Time frame: 1 year
Changes in low-density lipoprotein (LDL) from study entry (baseline)
Time frame: 1 year
Plan to share: No
This study is completed, as verified in Oct 2025. You cannot join it, but the record below documents what was studied.
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