CompletedNot Applicable

Evolution of Menstruation

France21 participantsStarted 2020-10-27

Plain-language summary

This study examines gene expression and gene regulation in the uterine lining during menses in women, for evolutionary comparison with other primates which do or do not menstruate. Samples will be obtained by non-invasive collection of menstrual fluid from healthy donors.

Who can participate

Age range

18 Years – 45 Years

Sex

FEMALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * having regular periods * being comfortable using silicone menstrual hygiene devices ("cup") * having giving consent in writing Exclusion Criteria: * use of an internal contraception method (hormone or non-hormone based) during or within three months before the study * pregnancy during or within three months before the study * amenorrhea (absent periods) during or within three months before the study * gynaecological intervention or surgery within three months before the study * hormonal treatment during or within three months before the study * absence of written consent * breastfeeding * medical treatment during the study * low (\< 18.5) or high (\> 30) body mass index (BMI)

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Gene expression levels measured by RNA-seq

Timeframe: Average to study completion 30 months

Active regulatory elements profiled by ATAC-seq

Timeframe: Average to study completion 30 months

Trial details

NCT IDNCT04085835

SponsorInstitut National de la Santé Et de la Recherche Médicale, France

Sponsor typeOTHER_GOV

Study typeOBSERVATIONAL

Primary completion2025-04-27

View on ClinicalTrials.gov More Menstruation trials