Scientists probe genetic secrets of lost fetuses to unravel sex chromosome mysteries
NCT ID NCT07304193
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at fetuses with sex chromosome disorders (like extra or missing X or Y chromosomes) that were either miscarried or electively aborted. Researchers will analyze the placenta and fetal tissues to see how the chromosome changes affect gene activity and development. The goal is to better understand why these disorders cause certain physical and health issues. About 120 fetuses and their placentas will be studied.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 120 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2024
- Expected to finish
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Dec 2029
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.
Who is studied
Recruitent of cases will take place at obstetric departments and departments of clinical genetics throughout Denmark. Recruitment of controls will take place at obstetric departments in the Central Denmark Region.
- Ages
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11 to 22 weeks
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion criteria cases: * Age ≥18 years * Fetuses with genetically verified sex chromosome disorders * Gestational age between 11+0 and 22+6 at the time of abortion or at delivery due to intrauterine fetal death * Written informed consent Inclusion criteria cases: * Age ≥18 years * No known sex chromosome disorder or other genetic disorder in the fetus * No known fetal malformations * Fetal growth within the normal range * Gestational age between 11+0 and 22+6 at the time of abortion
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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
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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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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Aarhus University Hospital
Aarhus, 8200, Denmark
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