A Study to Analyze the Microbiome and Immunology of the Lower and Upper Female Reproductive Tract in Women with Endometriosis


About this study

The purpose of this study is to map the female reproductive tract microbiome in patients with and without endometriosis to seek correlations of the microbiome to endometriosis, to determine if lower reproductive tract microbiome is predictive of upper reproductive tract changes by comparing composition of the microbiome in the lower and upper reproductive tracts, to explore immunologic differences in patients with and without endometriosis, compare presence of immunologic factors and cells between ectopic and eutopic endometrium, and to compare systemic immune system characteristics in patients with and without endometriosis using mass cytometry of peripheral blood samples.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Females, ≥ age 18 years old.
  • Females undergoing laparoscopy with or without hysterectomy for benign indications: suspected endometriosis for cases; elective salpingectomy/tubal ligation without endometriosis for controls.If insufficient numbers of subjects undergoing sterilization are available for recruitment, we will also include subjects undergoing surgery for abnormal uterine bleeding as controls.
  • Have not been on hormone therapy for endometriosis or contraception in the past 4 weeks before surgery.

Exclusion Criteria:

  • Women who are pregnant or nursing.
  • Women who are postmenopausal.
  • Women who are status post hysterectomy or bilateral oophorectomy.
  • Currently taking or have taken antibiotics in the past 4 weeks.
  • Current diagnosis of vaginitis or treatment for vaginitis in the past 6 months.
  • Females undergoing hysterectomy by abdominal or vaginal approaches.
  • Females undergoing hysterectomy or laparoscopic procedure for suspected malignancy.
  • Currently on hormone therapy for endometriosis or contraception.
  • History of autoimmune or inflammatory disease.*
  • *Exceptions may be permitted at the discretion of the investigator


Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Marina Walther-Antonio, Ph.D.

Closed for enrollment

Contact information:

Maureen Lemens C.C.R.C.



More information


Publications are currently not available

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