NCT04686357

Brief Summary

Although the endometrium has been traditionally considered free of bacteria, recent studies have documented the presence of an endometrial microbiome. The uterine microbiome can be defined as Lactobacillus-dominated (\<90% Lactobacillus spp.) or non-Lactobacillus-dominated (\<90% Lactobacillus spp. with \>10% of other bacteria). The presence of a pathogenic microbiota in endometrium was associated with significant decrease in implantation, pregnancy, ongoing pregnancy and live birth rates. Some of these pathogens microorganisms can also produce infection and inflammation that may lead to chronic endometritis. Nowadays, the endometrial microbiome can be investigated with the EMMA test and the most known pathogens related with chronic endometritis can be detected with the ALICE test,both of them developed by Igenomix group. Our goal in this project is to investigate at what extent, if any, the analysis of the endometrial factor, at a microbiome level, in patients at their first IVF cycle improves their clinical outcome.

Trial Health

35
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
1,018

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Aug 2021

Typical duration for not_applicable

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

December 18, 2020

Completed
10 days until next milestone

First Posted

Study publicly available on registry

December 28, 2020

Completed
7 months until next milestone

Study Start

First participant enrolled

August 1, 2021

Completed
2.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2023

Completed
Last Updated

July 8, 2021

Status Verified

March 1, 2021

Enrollment Period

2.1 years

First QC Date

December 18, 2020

Last Update Submit

July 5, 2021

Conditions

Keywords

Endometrial microbiotamicrobiome treated embryo transferfrozen embryo transferrandomized clinical trialendometrial microbiome metagenomic analysisanalysis of infectious chronic endometritis

Outcome Measures

Primary Outcomes (1)

  • Live birth rate

    The number of deliveries that resulted in at least one live birth per ET (transferred patient). Live birth is defined as the complete expulsion or extraction from a woman of a product of conception after 22 weeks of gestation, which, after such separation, breathes or shows any other evidence of life, such as heartbeat, umbilical cord pulsation or definite movement of voluntary muscles, irrespective of whether the umbilical cord has been cut or the placenta is attached.

    From date of embryo transfer until 40 weeks

Secondary Outcomes (9)

  • Implantation rate

    From date of embryo transfer until 5-6 weeks

  • Clinical miscarriage rate

    From date of embryo transfer until 20 weeks

  • Biochemical pregnancy rate

    From date of embryo transfer until 5-6 weeks

  • Ectopic pregnancy rate

    From date of embryo transfer until 8 weeks

  • Pregnancy rate

    From date of embryo transfer until 2 weeks

  • +4 more secondary outcomes

Study Arms (2)

Intervention group (mET)

EXPERIMENTAL

Microbiome-driven embryo transfer of a single vitrified blastocyst in an HRT cycle according to the EMMA/ALICE test results.

Diagnostic Test: EMMA/ALICE

Control group (FET)

ACTIVE COMPARATOR

Frozen embryo transfer of a single vitrified blastocyst in an HRT cycle according to the clinical standard practice.

Diagnostic Test: EMMA/ALICE

Interventions

EMMA/ALICEDIAGNOSTIC_TEST

Before randomization, an endometrial biopsy (EB) sample will be collected from all participants between day 15 and 25 of a natural cycle or after around 120 hours of progesterone (P) impregnation during a standard HRT cycle. The results of the EMMA/ALICE test will be provided to participants and their gynecologists. Depending on the test results, there are 3 different possibilities: 1. Normal result 2. Ultralow or Dysbiotic result 3. Abnormal result (pathogens) All probiotics and antibiotics that will be used in the study are already authorized by the local health authorities and will be prescribed under their technical data sheet/brochure conditions following the medical indications.

Intervention group (mET)

Eligibility Criteria

AgeUp to 37 Years
Sexfemale
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64)

You may qualify if:

  • Patients whose written IC approved by the EC has been obtained, after having been duly informed of the nature of the study and voluntarily accepted to participate after being fully aware of the potential risks, benefits and any discomfort involved.
  • Patients undergoing their first IVF/ICSI cycle (first oocyte pick up, freezing all) with their own oocytes that will receive single embryo transfer of frozen blastocyst stage embryos (day 5/6) on an HRT cycle.
  • At least 2 morphologically good quality embryos already vitrified in blastocyst stage (day 5/6).
  • Maternal Age: ≤37 years to rule out embryo factor in aging patients.
  • BMI: 18.5 - 30.0 kg / m2 (both inclusive).
  • Normal ovarian reserve (defined as: AFC ≥ 8; AMH level ≥1.0 ng/ml and/or FSH \< 8 mU/ml) before the controlled ovarian stimulation (COS) initiation.
  • Serum P levels ≤ 1.5 ng/ml, measured within 24 hours before the hCG administration in the COS cycle.
  • Negative serological tests for HIV, HBV, HCV, RPR.

You may not qualify if:

  • Patients with repeated miscarriages (\> 2 previous biochemical pregnancies or \> 2 spontaneous miscarriages).
  • Male partner with severe male factor (spermatozoa \< 2 million/ml). Semen donor is allowed.
  • Patients who are intrauterine device (IUD) carriers in the last 3 months before sample collection.
  • Adenomyosis or any pathological finding affecting the endometrial cavity such as polyps/sub-mucosal myomas, intramural myomas \> 4 cm, or hydrosalpinx must be previously operated at least 3 months before the endometrial samples are obtained.(Note: Patients are allowed to participate if the pathology is corrected before performing any study procedure).
  • Embryos analysed using preimplantation genetic testing for aneuploidies (PGT-A)
  • Women who have received antibiotics in the last month previous to sample collection, except for the prophylaxis for the oocyte retrieval. In the control group, antibiotics cannot be provided during the ET cycle
  • Illness or unstable medical condition that may put at risk the patient's safety and her compliance in the study

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Infertility, Female

Condition Hierarchy (Ancestors)

Genital Diseases, FemaleFemale Urogenital DiseasesFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital DiseasesGenital DiseasesInfertility

Study Officials

  • Jie Qiao

    Peking university Third Hospital, Beijing

    PRINCIPAL INVESTIGATOR
  • QingXue Zhang

    Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University

    PRINCIPAL INVESTIGATOR
  • Fei Gong

    Reproductive & Genetic Hospital of CITIC-Xiangya

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
DIAGNOSTIC
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

December 18, 2020

First Posted

December 28, 2020

Study Start

August 1, 2021

Primary Completion

September 1, 2023

Study Completion

September 1, 2023

Last Updated

July 8, 2021

Record last verified: 2021-03