NCT05648136

Brief Summary

Implantation is a determining step in human reproduction which requires the transition from a pro-inflammatory state to an anti-inflammatory state allowing the implantation of a competent embryo within a receptive endometrium, and then the maternal immunotolerance towards the alloantigenic fetus. Repeat implantation failures (RIFs), that refers to the fail to achieve a clinical pregnancy after the transfer of at least 3-4 good quality embryos or two blastocysts, and unexplained recurrent spontaneous miscarriage (RM) (≥2-3) could be related in some patients to immune imbalances characterized by an excessive and prolonged inflammatory response and/or a defect of anti-inflammatory regulation. In this context, several therapies have been evaluated in patients with RIFs or RMs in order to restore the immune balance, with heterogeneous results. No serum biomarker assay has been routinely approved to identify patients with immune imbalances that may explain repeated pregnancy failures and to predict the success of the subsequent IVF/ICSI cycle. The immunological analysis on peripheral blood will be based on the determination of the proportions of immune subpopulations (e.g. CD4+ et CD8+, TH1, TH2, TH17, Treg, ILC 1, ILC2, and ILC3) on the one hand and the circulating level of plasma cytokines on the other hand.

Trial Health

43
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
150

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Dec 2022

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

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

Study Start

First participant enrolled

December 2, 2022

Completed
3 days until next milestone

First Submitted

Initial submission to the registry

December 5, 2022

Completed
8 days until next milestone

First Posted

Study publicly available on registry

December 13, 2022

Completed
1.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

May 1, 2024

Completed
7 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2024

Completed
Last Updated

December 13, 2022

Status Verified

December 1, 2022

Enrollment Period

1.4 years

First QC Date

December 5, 2022

Last Update Submit

December 5, 2022

Conditions

Keywords

repeated embryo implantation failurerecurrent spontaneous miscarriageimmunological analysisimmune system

Outcome Measures

Primary Outcomes (14)

  • Variation of the proportion of CD4+ subpopulations between both patient groups

    18 months

  • Variation of the proportion of CD8+ subpopulations between both patient groups

    18 months

  • Variation of the proportion of TH1 subpopulations between both patient groups

    18 months

  • Variation of the proportion of TH2 subpopulations between both patient groups

    18 months

  • Variation of the proportion of TH17 subpopulations between both patient groups

    18 months

  • Variation of the proportion of Treg subpopulations between both patient groups

    18 months

  • Variation of the proportion of ILC 1 subpopulations between both patient groups

    18 months

  • Variation of the proportion of ILC 2 subpopulations between both patient groups

    18 months

  • Variation of the proportion of ILC 3 subpopulations between both patient groups

    18 months

  • Variation of the proportion of TNFα concentrations between both patient groups

    18 months

  • Variation of the proportion of IFN gamma concentrations between both patient groups

    18 months

  • Variation of the proportion of TGF-β concentrations between both patient groups

    18 months

  • Variation of the proportion of IL-10 concentrations between both patient groups

    18 months

  • Variation of the proportion of IL-17 concentrations between both patient groups

    18 months

Study Arms (2)

patients

EXPERIMENTAL

* Women aged 18 to 39 years * with a history of RIF or unexplained RM * with a negative diagnostic work-up (including pelvic ultrasound and hysteroscopy, parental karyotype, thyroid function test, and anti-thyroid and anti-phospholipid antibodies) * with a basal FSH level \<10IU/l and AMH level \>1.5ng/ml * with a regular menstrual cycle of 30+/-5 days * receiving a new cycle of in vitro fertilization (IVF) +/- intracytoplasmic sperm injection (ICSI) for patients in the RIF group or a first cycle of IVF +/-ICSI for patients in the RM group * received written and oral information and signed an informed consent

Biological: blood sample

control

ACTIVE COMPARATOR

* Controls recruited in the Obstetrics and Gynecology Department with at least one live birth after a spontaneous pregnancy (with a time to conception of less than 12 months for each pregnancy) Voluntary oocyte donors recruited within the CECOS de Picardie (having presented at least one live birth with a delay necessary to conceive of less than 12 months) * Controls recruited in the Reproductive Medicine and Biology Department having presented at least one live birth (spontaneous with a delay to conceive of less than 12 months for each pregnancy or after one or two MPA procedures) and benefiting from an IVF+/-ICSI procedure for secondary infertility * Controls recruited in the department of Medicine and Reproductive Biology with a normal infertility assessment and benefiting from an IVF procedure with ICSI on male indication.

Biological: blood sample

Interventions

blood sampleBIOLOGICAL

Blood sampling by venipuncture will be performed : * for patients and controls: between the 20th and 24th day of the menstrual cycle (implantation window) preceding the following IVF+/-ICSI cycle * for patients receiving an endometrial biopsy: on the same day as the endometrial biopsy * for patients and controls receiving follicular stimulation for ovarian puncture: the day of the oocyte puncture * for patients and controls undergoing embryo transfer: on the day of embryo implantation

controlpatients

Eligibility Criteria

Age18 Years - 39 Years
Sexfemale(Gender-based eligibility)
Gender Eligibility Detailspregnancy
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • For patients :
  • Women aged 18 to 39 years
  • women with a history of RIF or unexplained RM
  • women with a negative diagnostic work-up (including pelvic ultrasound and hysteroscopy, parental karyotype, thyroid function test, and anti-thyroid and anti-phospholipid antibodies)
  • women with a basal FSH level \<10IU/l and AMH level \>1.5ng/ml
  • women with a regular menstrual cycle of 30+/-5 days
  • women receiving a new cycle of in vitro fertilization (IVF) +/- intracytoplasmic sperm injection (ICSI) for patients in the RIF group or a first cycle of IVF +/-ICSI for patients in the RM group
  • women received written and oral information and signed an informed consent
  • For control groups:
  • Controls recruited in the Obstetrics and Gynecology Department with at least one live birth after a spontaneous pregnancy (with a time to conception of less than 12 months for each pregnancy) Voluntary oocyte donors recruited within the CECOS de Picardie (having presented at least one live birth with a delay necessary to conceive of less than 12 months)
  • Controls recruited in the Reproductive Medicine and Biology Department having presented at least one live birth (spontaneous with a delay to conceive of less than 12 months for each pregnancy or after one or two MPA procedures) and benefiting from an IVF+/-ICSI procedure for secondary infertility
  • Controls recruited in the department of Medicine and Reproductive Biology with a normal infertility assessment and benefiting from an IVF procedure with ICSI on male indication.

You may not qualify if:

  • Ongoing pelvic and/or systemic infection
  • Chronic infectious endometritis
  • Active neoplasia
  • Autoimmune and autoinflammatory disease
  • Celiac disease
  • Thrombophilia (including positive anti-phospholipid antibodies)
  • Endocrine pathology (including dysthyroidism and diabetes)
  • Endometriosis
  • Polycystic ovary syndrome and ovulatory disorders
  • Premature ovarian failure
  • IVF by oocyte donation
  • Tubal obstructions or lesions, uterine and cervical anomalies
  • Partners with extreme oligoastheno-spermia and/or sperm DNA fragmentation \>30
  • Sperm donations
  • Patients unable to give informed consent

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Centre Hospitalier Universitaire d'Amiens

Amiens, Picardie, 80000, France

RECRUITING

MeSH Terms

Conditions

Abortion, Habitual

Interventions

Blood Specimen Collection

Condition Hierarchy (Ancestors)

Abortion, SpontaneousPregnancy ComplicationsFemale Urogenital Diseases and Pregnancy ComplicationsUrogenital Diseases

Intervention Hierarchy (Ancestors)

Specimen HandlingClinical Laboratory TechniquesDiagnostic Techniques and ProceduresDiagnosisPuncturesSurgical Procedures, OperativeInvestigative Techniques

Central Study Contacts

Study Design

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

Study Record Dates

First Submitted

December 5, 2022

First Posted

December 13, 2022

Study Start

December 2, 2022

Primary Completion

May 1, 2024

Study Completion

December 1, 2024

Last Updated

December 13, 2022

Record last verified: 2022-12

Data Sharing

IPD Sharing
Will not share

Locations