Scientists hunt for genetic causes of recurrent pregnancy loss
NCT ID NCT04207814
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study aims to find genetic factors that may cause repeated miscarriages or unexplained fetal deaths. Researchers will collect biological samples from 200 couples who have experienced at least three early miscarriages or a fetal death in the second or third trimester. By comparing these samples to those from a previous study, they hope to identify genetic differences that could explain these tragic events.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this research could point toward genetic causes of repeated miscarriages and fetal deaths, potentially guiding future diagnostic tests.
- What could go wrong
- This is an observational study, not a treatment trial. It may not identify clear genetic determinants, and any findings would need further validation before clinical use.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2020
- Expected to finish
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Oct 2057
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 40 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * couples whose wife is over 18 and under 40 inclusive, * couples having undergone at least 3 unexplained SM in the first trimester or an FDIU in the trimesters 2 and 3 of pregnancy (excluding funicular and fetal causes and proven preeclampsia) * the man must be over 18 years old. * each member of the couple must consent to the investigation. * Subjects benefiting from a social security scheme. Exclusion Criteria: * couples where the woman is under 18 or over 40, * couples whose man is under 18, * identified cause of SRM or FDIU * Inability to consent for one of the members of the couple, * refusal to participate for one of the members of the couple. * treatment with anticoagulants or anti-aggregating platelet for women. * Person under legal protection * Subjects not benefiting from a social security scheme * Refusal to participate
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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BREST
RECRUITINGBrest, 29200, France