Evolutive and Functional Bases of Menstruation in Women - 2 (EVOMENS-2)

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

Status

Enrolling

Conditions

Menstruation

Treatments

Procedure: Hysteroscopy

Study type

Interventional

Funder types

Other

Identifiers

NCT05412771

C21-20

2021-A02779-32 (Registry Identifier)

Details and patient eligibility

About

Menstruation corresponds to the shedding of the uterine lining when fecundation has not occurred. This is a recent evolutionary innovation in primates, and the cellular and genetic changes that led to the acquisition of menstruation are not well understood. Additionally, the uterine lining is poorly characterized in humans across the menstrual cycle, which hinders both evolutionary and medically-relevant analyses.

In this study, the research team are collecting uterine endometrial tissue samples from female donors undergoing uterine surgery for benign conditions, to profile gene expression and gene regulatory elements in the major cell types that compose the uterine lining during the secretive phase of the menstrual cycle. The investigators will compare this data to similar samples collected from other primates at the same time point in the female hormonal cycle.

The objective is to identify genes that have acquired novel regulation and/or expression patterns and which may be involved in menstruation, as well as better characterize the cellular and molecular pathways at work in the uterine lining of women for translational medicine purposes.

Full description

Collection:

The research team will collect endometrial biopsies or discarded tissue scraps from medical practice from 20 consenting female donors undergoing surgical hysteroscopy for benign uterine conditions.

Primary objective:

The research team will perform transcriptome sequencing and open chromatin profiling from the tissue samples and compare to similar data produced from non-human primates that either do or do not menstruate. They will identify and characterize genes and non-coding regulatory elements differentially used in menstruating species and involved in the evolution of menstruation.

Secondary objectives:

The research team will profile and characterize non-coding RNAs expressed in the human endometrium.

The research team will establish 3D cell cultures (organoids) from the tissue samples for further functional validations of the primary objective.

Enrollment

20 estimated patients

Sex

Female

Ages

18 to 50 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Be between 18 and 50 years old.
Have mensturation at the time of their participation
Have given their written consent
Have an indication for surgery of hysteroscopy for removal of a polyp and/or fibroid and/or endometrial, endometrialctomy for presumed benign pathology and/or management of a uterine malformation, scheduled between days 21 and 25 of their menstrual cycle
Covered by social security

Exclusion criteria

Using an intrauterine device contraceptive method during the study or within the previous three months
To be Pregnant at the time of collection
Have been pregnant in the three months prior to collection
Have had amenorrhoea in the three months prior to collection
Have received hormonal treatment within the three months prior to collection
Have participated in a clinical study within 3 months prior to collection
Have a personal history of breast, ovarian, body or cervical cancer
Have a diagnosis of endometriosis
Have a diagnosis of adenomyosis
Have a diagnosis of Lynch syndrome
Undergoing hysteroscopy for a condition other than those listed in the inclusion criteria
Women who have not given written consent
Women who are breastfeeding
Women with a body mass index (BMI) of less than 18.5 or more than 30