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Immune Profile Analysis and Biomarker Identification in Women With Repeated Implantation Failure or Unexplained Recurrent Spontaneous Miscarriage

RecruitingNAAges 18 Years - 39 YearsFemaleCentre Hospitalier Universitaire, Amiens
NCT05648136 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

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 appro

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📋 Eligibility rules (as published)
Inclusion Criteria: * 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. Exclusion Criteria: * 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
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What it tests

  • blood sample
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Where

1 site
Centre Hospitalier Universitaire d'Amiens
Amiens, France
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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