Hidden genetic risks found in normal fetuses?
NCT ID NCT06211348
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at whether adding genomic sequencing to standard prenatal tests can find hidden genetic risks in fetuses that appear normal on ultrasound. Researchers will enroll 1,000 pregnant people who are already having amniocentesis or CVS for routine reasons. The goal is to see how often extra genetic findings turn up in these healthy-looking pregnancies.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Genomic sequencing
- What this could lead to
- If successful, this could show that genomic sequencing provides useful genetic information beyond standard tests for pregnancies with normal-looking fetuses.
- What could go wrong
- This is an early observational study, not a treatment trial. It may find variants of uncertain significance, causing anxiety without clear benefit.
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 1,000 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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Jan 2030
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 64 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: Pregnant patients who are: * Pregnant with a structurally normal fetus (singleton or multiple gestation) * Planning to undergo prenatal diagnosis by either chorionic villus sampling or amniocentesis with chromosome microarray analysis for routine indications * Planning, or have already completed expanded carrier screening Exclusion Criteria: Pregnant patients who: * Decline prenatal diagnostic testing * Are pregnant and their fetus has a known anomaly * Declined chromosomal microarray analysis of expanded carrier screening
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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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University of California, San Francisco
RECRUITINGSan Francisco, California, 94143, United States