ClinicalTrials.gg
CompletedNCT01852708MAPSUpdated Dec 30, 2020

Development of Non-invasive Prenatal Screening Test for Microdeletions Based on Fetal DNA Isolated From Maternal Blood

An observational study in Trisomy 21, Trisomy 18 and Trisomy 13, sponsored by Natera, Inc.. Completed at 9 sites in 3 countries. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-12-30.

Sponsored by Natera, Inc. · Observational

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Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
1,059
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 204 studies in Down Syndrome with a site in United States — 47 open to participants now, 55 under way, 4 of them phase 3. Down Syndrome · United States.

Enrollment
24th of 74
1,059 · median 433
Started
2012
with 7 others
Observational
74 of 204
14 open now
Registered
55th of 204
by date
Lead sponsor
8 of 204
Natera, Inc.

Among the 204 studies in Down Syndrome with a site in United States, this one is the 24th largest by enrollment of the 74 observational ones that give a count, is one of 8 that started in 2012, is one of 74 observational ones, and was the 55th registered.

Down Syndrome

438 studies on the registry are indexed under Down Syndrome; 99 are open to participants now.

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Open to participants now

47 of the 204 studies in Down Syndrome with a site in United States are open now. Recruiting first, the newest first:

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All 47 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 75 Down Syndrome studies recruiting now, 14 (19%) set no upper age limit and 58 (77%) stop at 75 or younger; 61 take children under 18; 19 take healthy volunteers.

This study: 18 Years and older · all sexes · healthy volunteers too.

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02

Study summary

The purpose of this study is to collect maternal blood samples from pregnant women carrying a fetus with a confirmed diagnosis of chromosomal abnormality or genetic disorder including microdeletions in order to further develop a non-invasive prenatal screening test based on fetal DNA isolated from maternal blood.

Read the detailed description

The goal of this study is to further develop a non-invasive prenatal blood test that can diagnose genetic disorders in the fetus by looking at fetal DNA (genetic material) found in the mother's bloodstream during pregnancy.

Women carrying a fetus diagnosed with microdeletions/microduplications (small missing or extra pieces of DNA that can cause problems), aneuploidy (trisomy 21, 18, or 13) or other genetic disorders will be asked to participate.

If this study is successful, it will reduce the need for invasive procedures during pregnancy such as amniocentesis and chorionic villus sampling (CVS) but still enable women to find out accurate information regarding their baby's health early in the pregnancy.

03

Conditions studied

  • Trisomy 21
  • Trisomy 18
  • Trisomy 13
  • Sex Chromosome Abnormalities
  • Microdeletion Syndromes

Keywords

  • 22q
  • 1p36
  • Angelman
  • Cri-du-chat
  • Prader-Willi
  • DiGeorge
  • Turner syndrome
  • Patau syndrome
  • Edwards syndrome
  • Down syndrome
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Pregnant women

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Inclusion criteria

  • Age 18 or older at enrollment
  • Gestation age of at least 9 weeks, 0 days by best obstetrical estimate
  • One or more fetuses with a clinically confirmed diagnosis of a genetic variant of interest via karyotype, FISH, chromosomal microarray or other genetic assay AND/OR
  • One or more fetuses with any variant of fetal structure that is expected to require medical or surgical intervention in the newborn period, shorten lifespan, affect intellectual development or otherwise indicate a genetic anomaly AND/OR
  • Positive high risk noninvasive prenatal screening or serum screening result
  • Able to provide

Exclusion criteria

Exclusion Criteria:

•Maternal history of bone marrow or organ transplantation

Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
1,059 participants (actual)
Patient registry
No
Biospecimen retention
Samples with dna

Groups and cohorts

  • Pregnant Women

    Women and their partners (presumed biological father of the fetus) who are currently pregnant and carrying a fetus that has been diagnosed with a microdeletion/duplication syndrome, aneuploidy or another genetic disorder (positive karyotype result or positive result on microarray test).

06

What researchers measure

Primary outcomes

  1. Sensitivity and Specificity of testing

    Sensitivity and Specificity of the test to diagnose microdeletions (eg. 22q and 5p-) and aneuploidy in a fetus at chromosomes 13, 18, 21, X and Y.

    Time frame: 1 year

07

Study locations

9 sites
  • Natera, Inc.
    San Carlos, California 94070, United States
  • MFM Group of Southern CA
    San Gabriel, California 91776, United States
  • Washington Women's Wellness Center
    Washington, District of Columbia 20010, United States
  • Saint Peter's University Hospital
    New Brunswick, New Jersey 08901, United States
  • Columbia University
    New York, New York 10032, United States
  • The Children's Hospital of Philadelphia
    Philadelphia, Pennsylvania 19104, United States
  • Dr. Meltzer Clinic
    Houston, Texas 77054, United States
  • Hospital Materno Infantil Vall d'Hebron
    Barcelona, 08035, Spain
  • GenePhile Biosciences
    Taipei, 10050, Taiwan
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Nov 2012 to primary completion in Oct 2020, 95 months.

Of 55 observational studies under Down Syndrome, half reached primary completion within 34 months of starting (the median), counting those still running; a quarter within 19 and three quarters within 80. This study's 95 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
May 6, 2013
First posted
May 14, 2013
StartActual
Nov 2012
Primary completionActual
Oct 2020
CompletionActual
Oct 2020
Last update
Dec 30, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 30, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01852708
Lead sponsor
Natera, Inc.
Responsible party
Sponsor
First posted
May 14, 2013
Start date
Nov 2012
Primary completion
Oct 2020
Completion
Oct 2020
Last update
Dec 30, 2020

Study contacts

Zachary Demko, PhD
principal investigator · Natera, Inc.

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2020. You cannot join it, but the record below documents what was studied.

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Discussion

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