Skip to content

A Study to Evaluate the Effect of Contraceptive Vaginal Rings on Primary Dysmenorrhea (P08257/MK-8175A/MK-8342B-057)

A Multicenter, Randomized, Partially Blinded, Placebo-controlled Clinical Trial to Evaluate the Effect on Primary Dysmenorrhea of Vaginal Rings With an Average Daily Release of 700 μg Nomegestrol Acetate (NOMAC) and 300 μg Estradiol (E2), or 900 μg Nomegestrol Acetate (NOMAC) and 300 μg Estradiol (E2), or 100 μg Etonogestrel (ENG) and 300 μg E2, or 125 μg Etonogestrel (ENG) and 300 μg E2. Protocol MK-8175A/MK-8342B 057 (Abbreviated as P057), Also Known as SCH900121/SCH900432 08257 (Abbreviated as P08257)

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01670656
Enrollment
439
Registered
2012-08-22
Start date
2013-01-21
Completion date
2013-09-12
Last updated
2024-05-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dysmenorrhea

Brief summary

The study investigates four vaginal ring groups with respect to relief of primary dysmenorrhea, and should identify at least one vaginal ring that shows clinically relevant treatment efficacy in relief of primary dysmenorrhea.

Detailed description

The study investigates four vaginal ring groups with respect to relief of primary dysmenorrhea, and should identify at least one vaginal ring that shows clinically relevant treatment efficacy in relief of primary dysmenorrhea. The intake of ibuprofen rescue medication and the impact on daily life is investigated: change from baseline data of these two variables will be compared between each of the four active ring groups, separately, and the placebo ring group. Furthermore, the study assesses the measurement characteristics and psychometric properties of a newly developed Dysmenorrhea Daily Dairy. Vaginal bleeding pattern and general safety and tolerability will also be evaluated.

Interventions

DRUGNomegestrol acetate contraceptive vaginal ring (NOMAC-CVR)

Either 700 or 900 mcg NOMAC and 300 mcg E2 intravaginal ring for two 28-day cycles

DRUGEtonogestrel containing contraceptive vaginal ring (ENG-CVR)

Either 100 or 125 mcg ENG and 300 mcg E2, intravaginally for two 28-day cycles

DRUGPlacebo

Placebo to match vaginal ring, intravaginally for two 28-day cycles

DRUGIbuprofen

Ibuprofen 400 mg will be dispensed throughout the entire study as needed as rescue medication for treating menstrual cramping pain. The maximum daily ibuprofen dose is 3200 mg (8 tablets)

Sponsors

Organon and Co
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 50 Years
Healthy volunteers
No

Inclusion criteria

* Body mass index (BMI) ≥18 and ≤35 * Established diagnosis of primary dysmenorrhea * If of child-bearing potential must agree to use condoms for contraception during the entire screening period, treatment period, and post-treatment period until the final study visit, unless she or her partner are surgically sterilized * Agree to stop using hormonal contraceptive (combined or progestin-only), or a non hormonal intrauterine device (IUD) * Regular menstrual cycles ranging from 24 to 35 days in length

Exclusion criteria

* Any of the following contraindications to the use of contraceptive steroids including: presence or a history of venous or arterial thrombotic/thromboembolic events or cerebrovascular accident (stroke, history of migraine with focal neurological symptoms, diabetes mellitus with vascular involvement, severe or multiple risk factor(s) for venous or arterial thrombosis, severe dyslipoproteinemia, severe hypertension, pancreatitis or a history thereof if associated with severe hypertriglyceridaemia, presence or history of severe hepatic (liver) disease, including benign or malignant tumors, known or suspected sex steroid-influenced malignancies, and/or undiagnosed vaginal bleeding * Pregnant or breastfeeding * Secondary dysmenorrhea * Has not had spontaneous menstruation following a delivery or abortion * Participated in an investigational drug study within 30 days * History of malignancy ≤5 years * Documented abnormal cervical smear result within 6 months * Use of recreational or illicit drugs * Consumes \>2 alcoholic drinks per day or \>14 alcoholic drinks per week, or engages in binge drinking * Allergy/sensitivity to ibuprofen, or any contraindication to its use, or has experienced asthma, urticaria, or allergic-type reactions after taking aspirin, or other nonsteroidal anti inflammatory drugs * Has been sterilized using a fallopian tube occlusion device * Is receiving, or has received sex hormones for any purpose other than contraception within 2 months or injectable hormonal contraception within 6 months

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Mean Menstrual Cramping Pain Score Through Cycle 2Baseline and Day 29 to 56 (Cycle 2)The Mean Menstrual Cramping Pain score was calculated as the average of the three highest daily menstrual cramping scores (item #3 of the Menstrual Distress Questionnaire: Cramps) in the baseline cycle and treatment Cycle 2, respectively. The daily menstrual cramping pain score was based on five pain categories: none (0); mild (1); moderate (2); strong (3); and severe (4). In case of absence of withdrawal bleeding, or onset of menstruation, the mean of the three highest menstrual cramping pain scores recorded within Days 21-28 was used for analysis. The Mean Menstrual Cramping Pain Score in the baseline or subsequent cycles could range from 0 (none) to 4 (severe).

Secondary

MeasureTime frameDescription
Change From Baseline in Total Mean Impact Score Through Cycle 2Baseline and Day 29 to 56 (Cycle 2)Total Mean Impact Score is the mean of the sum of the daily responses to questions 6, 8, 9, and 10 in the Dysmenorrhea Daily e-Dairy, as recorded within the menstrual cramping pain analysis window. These questions assessed how much interference there was from pelvic cramping pain on work/school activities (Q6), physical activities (Q8), social/leisure activities (Q9) and sleep (Q10). Each question was rated on a 5-point (0-4) scale, with 0 being not at all, 1 slightly, 2 moderately, 3 quite a bit and 4 extremely. The total mean impact score could thus range from 0 (lowest possible impact) to 16 (highest possible impact).
Change From Baseline in Number of Ibuprofen Tablets Taken Through Cycle 2Baseline and Day 29 to 56 (Cycle 2)Participants were provided with ibuprofen 400 mg tablets at the screening visit to be taken throughout the study as needed as rescue medication for treating menstrual cramping pain. The maximum daily ibuprofen dose was 3200 mg (8 tablets). Participants were instructed to take the provided ibuprofen, and no other medications, for the relief of menstrual cramping pain, and to record their ibuprofen usage in their e-Diaries.
Change From Baseline in Number of Days of Ibuprofen Intake Through Cycle 2Baseline and Day 29 to 56 (Cycle 2)Participants were provided with ibuprofen 400 mg tablets at the screening visit to be taken throughout the study as needed as rescue medication for treating menstrual cramping pain. The maximum daily ibuprofen dose was 3200 mg (8 tablets). Participants were instructed to take the provided ibuprofen, and no other medications, for the relief of menstrual cramping pain, and to record their ibuprofen usage in their e-Diaries.

Participant flow

Participants by arm

ArmCount
NOMAC-E2 700/300 mcg
NOMAC-E2 700/300 mcg was administered for two 28-day treatment periods, each period (cycle) consisting of 21 days of vaginal ring use followed by 7 vaginal ring-free days.
86
NOMAC-E2 900/300 mcg
NOMAC-E2 900/300 mcg administered for two 28-day treatment periods, each period (cycle) consisting of 21 days of vaginal ring use followed by 7 vaginal ring-free days.
91
ENG-E2 100/300 mcg
ENG-E2 100/300 mcg was administered for two 28-day treatment periods, each period (cycle) consisting of 21 days of vaginal ring use followed by 7 vaginal ring-free days.
87
ENG-E2 125/300 mcg
ENG-E2 125/300 mcg was administered for two 28-day treatment periods, each period (cycle) consisting of 21 days of vaginal ring use followed by 7 vaginal ring-free days.
85
Placebo
Placebo was administered for two 28-day treatment periods, each period (cycle) consisting of 21 days of vaginal ring use followed by 7 vaginal ring-free days.
90
Total439

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004
Overall StudyAdverse Event22233
Overall StudyLost to Follow-up00003
Overall StudyNon-compliance with protocol03112
Overall StudyNon-compliance with study drug00301
Overall StudyPregnancy00001
Overall StudySubject moved00010
Overall StudySubject withdrew consent01211
Overall StudyWithdrawal by Subject11000

Baseline characteristics

CharacteristicNOMAC-E2 700/300 mcgNOMAC-E2 900/300 mcgENG-E2 100/300 mcgENG-E2 125/300 mcgPlaceboTotal
Age, Continuous28.7 Years
STANDARD_DEVIATION 7.5
28.7 Years
STANDARD_DEVIATION 8.1
29.0 Years
STANDARD_DEVIATION 7.7
28.3 Years
STANDARD_DEVIATION 7.8
28.4 Years
STANDARD_DEVIATION 8.2
28.6 Years
STANDARD_DEVIATION 7.8
Sex: Female, Male
Female
86 Participants91 Participants87 Participants85 Participants90 Participants439 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —— / —
other
Total, other adverse events
12 / 8611 / 9114 / 867 / 8511 / 90
serious
Total, serious adverse events
0 / 861 / 910 / 861 / 850 / 90

Outcome results

Primary

Change From Baseline in Mean Menstrual Cramping Pain Score Through Cycle 2

The Mean Menstrual Cramping Pain score was calculated as the average of the three highest daily menstrual cramping scores (item #3 of the Menstrual Distress Questionnaire: Cramps) in the baseline cycle and treatment Cycle 2, respectively. The daily menstrual cramping pain score was based on five pain categories: none (0); mild (1); moderate (2); strong (3); and severe (4). In case of absence of withdrawal bleeding, or onset of menstruation, the mean of the three highest menstrual cramping pain scores recorded within Days 21-28 was used for analysis. The Mean Menstrual Cramping Pain Score in the baseline or subsequent cycles could range from 0 (none) to 4 (severe).

Time frame: Baseline and Day 29 to 56 (Cycle 2)

Population: All randomized participants in whom a vaginal ring was inserted and who had at least one baseline or one post-baseline value for Menstrual Cramping Pain Score

ArmMeasureValue (LEAST_SQUARES_MEAN)
NOMAC-E2 700/300 mcgChange From Baseline in Mean Menstrual Cramping Pain Score Through Cycle 2-1.7 Units on a scale
NOMAC-E2 900/300 mcgChange From Baseline in Mean Menstrual Cramping Pain Score Through Cycle 2-1.7 Units on a scale
ENG-E2 100/300 mcgChange From Baseline in Mean Menstrual Cramping Pain Score Through Cycle 2-1.9 Units on a scale
ENG-E2 125/300 mcgChange From Baseline in Mean Menstrual Cramping Pain Score Through Cycle 2-1.7 Units on a scale
PlaceboChange From Baseline in Mean Menstrual Cramping Pain Score Through Cycle 2-1.2 Units on a scale
p-value: <0.00195% CI: [-1, -0.2]cLDA
p-value: <0.00195% CI: [-0.9, -0.2]cLDA
p-value: <0.00195% CI: [-1.1, -0.4]cLDA
p-value: <0.00195% CI: [-0.9, -0.2]cLDA
Secondary

Change From Baseline in Number of Days of Ibuprofen Intake Through Cycle 2

Participants were provided with ibuprofen 400 mg tablets at the screening visit to be taken throughout the study as needed as rescue medication for treating menstrual cramping pain. The maximum daily ibuprofen dose was 3200 mg (8 tablets). Participants were instructed to take the provided ibuprofen, and no other medications, for the relief of menstrual cramping pain, and to record their ibuprofen usage in their e-Diaries.

Time frame: Baseline and Day 29 to 56 (Cycle 2)

Population: All randomized participants in whom a vaginal ring was inserted and who had at least one baseline or one post-baseline value for Number of Days of Ibuprofen Intake

ArmMeasureValue (LEAST_SQUARES_MEAN)
NOMAC-E2 700/300 mcgChange From Baseline in Number of Days of Ibuprofen Intake Through Cycle 2-1.3 Days of ibuprofen intake
NOMAC-E2 900/300 mcgChange From Baseline in Number of Days of Ibuprofen Intake Through Cycle 2-1.7 Days of ibuprofen intake
ENG-E2 100/300 mcgChange From Baseline in Number of Days of Ibuprofen Intake Through Cycle 2-1.7 Days of ibuprofen intake
ENG-E2 125/300 mcgChange From Baseline in Number of Days of Ibuprofen Intake Through Cycle 2-1.4 Days of ibuprofen intake
PlaceboChange From Baseline in Number of Days of Ibuprofen Intake Through Cycle 2-1.1 Days of ibuprofen intake
p-value: =0.44795% CI: [-0.6, 0.3]cLDA
p-value: =0.00395% CI: [-1, -0.1]cLDA
p-value: =0.00395% CI: [-1, -0.1]cLDA
p-value: =0.15695% CI: [-0.7, 0.2]cLDA
Secondary

Change From Baseline in Number of Ibuprofen Tablets Taken Through Cycle 2

Participants were provided with ibuprofen 400 mg tablets at the screening visit to be taken throughout the study as needed as rescue medication for treating menstrual cramping pain. The maximum daily ibuprofen dose was 3200 mg (8 tablets). Participants were instructed to take the provided ibuprofen, and no other medications, for the relief of menstrual cramping pain, and to record their ibuprofen usage in their e-Diaries.

Time frame: Baseline and Day 29 to 56 (Cycle 2)

Population: All randomized participants in whom a vaginal ring was inserted and who had at least one baseline or one post-baseline value for Number of Ibuprofen Tablets Taken

ArmMeasureValue (LEAST_SQUARES_MEAN)
NOMAC-E2 700/300 mcgChange From Baseline in Number of Ibuprofen Tablets Taken Through Cycle 2-6.4 Ibuprofen tablets
NOMAC-E2 900/300 mcgChange From Baseline in Number of Ibuprofen Tablets Taken Through Cycle 2-6.3 Ibuprofen tablets
ENG-E2 100/300 mcgChange From Baseline in Number of Ibuprofen Tablets Taken Through Cycle 2-7.1 Ibuprofen tablets
ENG-E2 125/300 mcgChange From Baseline in Number of Ibuprofen Tablets Taken Through Cycle 2-6.0 Ibuprofen tablets
PlaceboChange From Baseline in Number of Ibuprofen Tablets Taken Through Cycle 2-4.8 Ibuprofen tablets
p-value: =0.02695% CI: [-3.4, 0.2]cLDA
p-value: =0.03695% CI: [-3.3, 0.2]cLDA
p-value: =0.00295% CI: [-4.1, -0.5]cLDA
p-value: =0.195% CI: [-3, 0.6]cLDA
Secondary

Change From Baseline in Total Mean Impact Score Through Cycle 2

Total Mean Impact Score is the mean of the sum of the daily responses to questions 6, 8, 9, and 10 in the Dysmenorrhea Daily e-Dairy, as recorded within the menstrual cramping pain analysis window. These questions assessed how much interference there was from pelvic cramping pain on work/school activities (Q6), physical activities (Q8), social/leisure activities (Q9) and sleep (Q10). Each question was rated on a 5-point (0-4) scale, with 0 being not at all, 1 slightly, 2 moderately, 3 quite a bit and 4 extremely. The total mean impact score could thus range from 0 (lowest possible impact) to 16 (highest possible impact).

Time frame: Baseline and Day 29 to 56 (Cycle 2)

Population: All randomized participants in whom a vaginal ring was inserted and who had at least one baseline or one post-baseline value for Total Mean Impact Score

ArmMeasureValue (LEAST_SQUARES_MEAN)
NOMAC-E2 700/300 mcgChange From Baseline in Total Mean Impact Score Through Cycle 2-4.8 Units on a scale
NOMAC-E2 900/300 mcgChange From Baseline in Total Mean Impact Score Through Cycle 2-5.0 Units on a scale
ENG-E2 100/300 mcgChange From Baseline in Total Mean Impact Score Through Cycle 2-4.7 Units on a scale
ENG-E2 125/300 mcgChange From Baseline in Total Mean Impact Score Through Cycle 2-4.3 Units on a scale
PlaceboChange From Baseline in Total Mean Impact Score Through Cycle 2-3.1 Units on a scale
p-value: =0.00295% CI: [-3, -0.4]cLDA
p-value: <0.00195% CI: [-3.1, -0.6]cLDA
p-value: =0.00395% CI: [-2.9, -0.3]cLDA
p-value: =0.02495% CI: [-2.5, 0.1]cLDA

Source: ClinicalTrials.gov · Data processed: Mar 5, 2026