Rimegepant For Endometriosis Pain

Trial statusNot yet recruiting
Trial phasePhase 2
Trial typeInterventional
Biological sexFemale
Age18-45
SponsorMayo Clinic

About this trial

The purpose of this study is to evaluate the efficacy of rimegepant 75 mg versus placebo in reducing endometriosis-associated pain (EAP) in women with moderate-to-severe pain and histologically confirmed endometriosis.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Consent: Female subjects, aged 18 to 45 years inclusive, who are able to provide written informed consent.

Surgical Confirmation: Histologically confirmed diagnosis of endometriosis via surgical pathology performed within the 3 to 6 months prior to screening.

Pain Severity: Presence of moderate-to-severe endometriosis-associated pain, defined as an EDPI score of 2 or higher during the screening period.

Contraceptive Requirement: Current use of an effective method of contraception (including hormonal contraceptives, intra-uterine devices, or sterilization). Subjects must commit to continuing the same contraceptive method throughout the 12-week study to avoid confounding pain levels and ensure safety.

Disqualifiers

Pregnancy and Lactation: Pregnant or breastfeeding women. Any subject with a positive urine hCG test at screening or during the trial will be excluded or immediately withdrawn.

Menopausal Status: Women who are menopausal, whether through natural onset or surgical intervention.

Cardiovascular and Metabolic Disease: History of cardiovascular disease, stroke, uncontrolled hypertension, or diabetes.

Organ Impairment: Presence of severe kidney or liver disease (specifically ALT/AST >2x ULN).

Trial design

Design model

Parallel

Treatments tested in this trial

  • Rimegepant 75 MG

    Drug

    Rimegepant 75 mg oral capsule administered every other day for 12 weeks

  • Placebo

    Drug

    Matching placebo oral capsule administered every other day for 12 weeks.

Treatment groups

132 Participants
are divided into 2 treatment groups
Group A: RimegepantExperimental treatment 1 intervention
Group B: PlaceboPlacebo comparator 1 intervention

Trial outcomes

Primary outcomes

1

Change in Non-Menstrual Pelvic Pain (NMPP)

Non-menstrual pelvic pain will be assessed using the Endometriosis Daily Pain Impact (EDPI) score. The EDPI is a participant-reported numeric rating scale used to assess endometriosis-associated pain, with scores ranging from 0 to 10; higher scores indicate greater pain intensity and/or impact. The baseline value will be calculated from the pre-treatment baseline assessment period, and the post-baseline value will be calculated as the mean daily score during Weeks 9 through 12.

Time frame
Baseline to Weeks 9-12
2

Change in Dysmenorrhea (Menstrual Pain)

Dysmenorrhea (Menstrual Pain) will be assessed using the Endometriosis Daily Pain Impact (EDPI) score for dysmenorrhea. The EDPI (dysmenorrhea) is a participant-reported numeric rating scale that measures the severity of painful uterine cramping and pelvic pain specifically associated with the menstrual cycle. Scores range from 0 to 10; higher scores indicate greater pain intensity and/or impact. The baseline value will be calculated from the pre-treatment baseline assessment period, and the post-baseline value will be calculated as the mean daily score during Weeks 9 through 12.

Time frame
Baseline to Weeks 9-12

Secondary outcomes

1

Proportion of Responders

The percentage of participants achieving clinically meaningful pain reduction, defined as a ≥40% reduction in the mean daily EDPI score for non-menstrual pelvic pain (NMPP) and a ≥60% reduction in the mean daily EDPI score for dysmenorrhea.

Time frame
Baseline to Weeks 9-12
2

Reduction in Rescue Analgesic Use

The change in the mean frequency (days per week) of rescue analgesic administration, reported as morphine milligram equivalents (MME)

Time frame
Baseline to Weeks 9-12
3

Reduction in Monthly Migraine Frequency

In the pre-specified subgroup of participants with comorbid migraine, the change from baseline in the number of monthly migraine days (MMD) as recorded in a daily headache diary.

Time frame
Baseline to Weeks 9-12

Other outcomes

Sponsors and contacts

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