Maternal Embryo Interaction in Recurrent Miscarriages (MEER)
The Maternal-embryo Interaction and Its Role in the Etiology of Recurrent Miscarriages
Background of the study:
The etiology of recurrent miscarriage (RM, defined as three or more consecutive miscarriages without any proven maternal or fetal cause), remains undiagnosed in more than 50% of cases. In these cases it is generally considered that a disturbance in the normal mother-embryo interactions is a causal factor. This disturbance may be based on a dysregulation of embryo invasiveness and/or decidual acceptance (e.g. altered decidualization; endometrial changes in preparation for the acceptance of a putative pregnancy). Moreover, dysfunctional maternal immune regulatory natural killer (NK) cells, implicated in tolerance induction and trophoblast invasion,may also underlie the occurrence of RM. The Selection Failure hypothesis for RM suggests that super-receptive endometrium (possibly due to increased embryo invasiveness and/or decidual acceptance and/or dysregulated immune cell function) may allow 'poor quality' embryos to implant and present as a clinical pregnancy before miscarrying. Fundamental knowledge on mechanisms of embryo implantation, decidual function and maternal immune reactivity in successful pregnancies has accumulated over the past 5 years. This study aims to investigate whether dysregulation of (one of) these mechanisms may underlie RM.
Objective of the study:
To test The Selection Failure hypothesis by assessing A) the degree of embryo invasiveness and decidual acceptance (the quality of decidualization, endometrium-embryo communication and endometrial stromal cell (ESC) migration) and B) the angiogenic capacity of decidual NK (dNK) cells, in order to elucidate the pattern of the mother-embryo equilibrium in women with RM.
Studieoversigt
Status
Betingelser
Undersøgelsestype
Tilmelding (Faktiske)
Kontakter og lokationer
Studiesteder
-
-
-
Utrecht, Holland
- University Medical Center
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Prøveudtagningsmetode
Studiebefolkning
Beskrivelse
Inclusion Criteria:
- Women with unexplained recurrent miscarriages (three or more first trimester miscarriages).
- Proven fertile women (at least 1 successful pregnancy and no more than 1 miscarriage).
- Age 18 - 40 years.
- Willing and able to give informed consent.
Exclusion Criteria:
- Any identifiable causes of recurrent miscarriages; antiphospholipid syndrome (lupus anticoagulant and/or anticardiolipin antibodies [IgG or IgM]), other recognised thrombophilic conditions (testing according to usual clinic practice), intrauterine abnormalities (as assessed by ultrasound, hysterosonography, hysterosalpingogram or hysteroscopy), submucous fibroids and tests initiated only if clinically indicated such as tests for diabetes, thyroid disease and SLE
- Undergoing treatment (hormonal)
- Women using oral contraception or having an intra uterine device.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Observationsmodeller: Case-Control
- Tidsperspektiver: Fremadrettet
Kohorter og interventioner
Gruppe / kohorte |
|---|
|
Recurrent miscarriage group
Women with unexplained recurrent miscarriages (three or more first trimester miscarriages).
|
|
Control group
Proven fertile women (at least 1 successful pregnancy and no more than 1 miscarriage).
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Embryo survival on decidualized ESCs of RM patients or fertile controls (Embryo survival as an indirect measure of embryo invasiveness)
Tidsramme: 2 years
|
Embryo survival as an indirect measure of embryo invasiveness
|
2 years
|
Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Cobi J Heijnen, Prof. dr., UMC Utrecht
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- MEER-study
- METC (Registry Identifier: 09-408/C)
- CCMO (Registry Identifier: NL83114.042.22)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
produkt fremstillet i og eksporteret fra U.S.A.
Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .
Kliniske forsøg med Tilbagevendende aborter
-
Ohio State UniversityMerck Sharp & Dohme LLCIkke rekrutterer endnuRecurrent Respiratory Papillomatosis (RRP)Forenede Stater
-
National Cancer Institute (NCI)Ikke rekrutterer endnuRecidiverende platinfølsomt tuba fallopii højgradigt serøst adenokarcinom | Recidiverende Platinfølsom Ovarie Højgradigt Serøs Adenokarcinom | Recurrent Platinum-Sensitive Primary Peritoneal High Grade Serous Adenocarcinoma | Recurrent Platinum-Sensitive Endometrioid Adenokarcinom i Æggelederen og andre forhold