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Showing 1–22 of 22 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Trisomy 18 Clear all
Not listed No phase listed Observational Accepts healthy volunteers

Non-Invasive Determination of Fetal Chromosome Abnormalities

NCT00891852
View directory record Official record
Conditions
Down Syndrome (Trisomy 21), Edward's Syndrome (Trisomy 18), Patau Syndrome (Trisomy 13), Klinefelter Syndrome (47, XXY), and Other Chromosome, Abnormalities.
Interventions
Not listed
Lead sponsor
Lenetix Medical Screening Laboratory
Industry
Eligibility
18 Years and older · Female only
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
7
States / cities
Rockville, Maryland • Moristown, New Jersey • Mineola, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 30, 2009 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational

Noninvasive Screening for Fetal Aneuploidy: A New Maternal Plasma Marker

NCT00971334
View directory record Official record
Conditions
Pregnancy, Aneuploidy, Down Syndrome, Edwards Syndrome
Interventions
Not listed
Lead sponsor
Sequenom, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
2,502 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
30
States / cities
Mobile, Alabama • La Mesa, California • San Diego, California + 21 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2012 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational

Development of Non-invasive Prenatal Test for Microdeletion and Other Genetic Syndromes Based on Cell Free DNA

NCT02109770
View directory record Official record
Conditions
Microdeletion Syndromes, Trisomy 21, Trisomy 18, Trisomy 13, Sex Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
Not listed
Enrollment
216 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
2
States / cities
San Carlos, California • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 25, 2019 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

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

NCT01852708
View directory record Official record
Conditions
Trisomy 21, Trisomy 18, Trisomy 13, Sex Chromosome Abnormalities, Microdeletion Syndromes
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,059 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2020
U.S. locations
7
States / cities
San Carlos, California • San Gabriel, California • Washington D.C., District of Columbia + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 29, 2020 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational

Verification of Risk Assignment for Whole Chromosome Using SNP-based NIPT in Vanishing Twin Pregnancies

NCT05004337
View directory record Official record
Conditions
Vanishing Twin, Trisomy 21, Trisomy 13, Trisomy 18
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
21
States / cities
Los Angeles, California • Palo Alto, California • Aurora, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2024 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational

Non-Invasive Screening for Fetal Aneuploidy

NCT00847990
View directory record Official record
Conditions
Down Syndrome, Edwards Syndrome
Interventions
Maternal blood screening test for fetal aneuploidy
Other
Lead sponsor
Sequenom, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
5,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
25
States / cities
Mesa, Arizona • Phoenix, Arizona • Tucson, Arizona + 18 more
Source: ClinicalTrials.gov public record
Updated Sep 4, 2011 · Synced Jul 21, 2026, 11:10 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Prenatal Non-invasive Aneuploidy Test Utilizing SNPs Trial

NCT01545674
View directory record Official record
Conditions
Trisomy 13, Trisomy 18, Trisomy 21, Aneuploidy
Interventions
Blood Draw
Procedure
Lead sponsor
Natera, Inc.
Industry
Eligibility
Female only
Enrollment
937 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2023
U.S. locations
24
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 16 more
Source: ClinicalTrials.gov public record
Updated Mar 22, 2023 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational

VAlidation of a Lower Cost aneUploidy scrEen

NCT03087357
View directory record Official record
Conditions
Down Syndrome, Trisomy 18, Trisomy 13
Interventions
SmartNIPT
Other
Lead sponsor
Women and Infants Hospital of Rhode Island
Other
Eligibility
18 Years and older · Female only
Enrollment
2,443 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
13
States / cities
Los Angeles, California • Aurora, Colorado • Bridgeport, Connecticut + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2022 · Synced Jul 21, 2026, 11:10 AM EDT
Not listed No phase listed Observational

Non-Invasive Screening for Fetal Aneuploidy

NCT02317965
View directory record Official record
Conditions
Down Syndrome, Edwards Syndrome
Interventions
Maternal Blood Draw
Other
Lead sponsor
Progenity, Inc.
Industry
Eligibility
18 Years to 54 Years · Female only
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
10
States / cities
Campbell, California • Long Beach, California • Denver, Colorado + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2018 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational

Non-Invasive Screening for Fetal Aneuploidy: A New Maternal Plasma Marker

NCT00770458
View directory record Official record
Conditions
Down Syndrome (Trisomy 21), Edwards Syndrome (Trisomy 18), Patau Syndrome (Trisomy 13), Turner Syndrome
Interventions
Not listed
Lead sponsor
Sequenom, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
7
States / cities
La Jolla, California • San Diego, California • San Jose, California + 4 more
Source: ClinicalTrials.gov public record
Updated Jan 5, 2010 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational

Expanded Noninvasive Genomic Medical Assessment: The Enigma Study

NCT02787486
View directory record Official record
Conditions
Down Syndrome, Edwards Syndrome, Patau Syndrome, Klinefelter Syndrome, Turner Syndrome, DiGeorge Syndrome, Chromosome Deletion, Aneuploidy
Interventions
Blood sampling for Laboratory Developed Test (LDT) analysis
Other
Lead sponsor
Progenity, Inc.
Industry
Eligibility
18 Years to 54 Years · Female only
Enrollment
760 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
8
States / cities
Scottsdale, Arizona • Eunice, Louisiana • Brooklyn, New York + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2019 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

High Risk Multiple Gestation Study

NCT02278874
View directory record Official record
Conditions
Trisomy 13, Trisomy 18, Trisomy 21, Sex Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older
Enrollment
99 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
4
States / cities
Boston, Massachusetts • Glen Cove, New York • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2019 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational

Comparison of Aneuploidy Risk Evaluations

NCT01663350
View directory record Official record
Conditions
Pregnancy, Down Syndrome, Edwards Syndrome, Patau Syndrome, Turners Syndrome
Interventions
Not listed
Lead sponsor
Verinata Health, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
26
States / cities
San Diego, California • Atlanta, Georgia • Chicago, Illinois + 22 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2013 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Multiple Gestation Study

NCT02278536
View directory record Official record
Conditions
Trisomy 13, Trisomy 18, Trisomy 21, Sex Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older
Enrollment
354 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
6
States / cities
San Carlos, California • San Diego, California • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2019 · Synced Jul 21, 2026, 11:10 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Brain Study of Patients With Frontal Lobe Dementia and Parkinsonian Disorders

NCT00001178
View directory record Official record
Conditions
Alzheimer's Disease, Dementia, Down's Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years and older
Enrollment
597 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1981 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 11, 2019 · Synced Jul 21, 2026, 11:10 AM EDT
Terminated No phase listed Observational

Clinical Performance of the MaterniT21 PLUS LDT in Multiple Gestation Pregnancies

NCT02226315
View directory record Official record
Conditions
Down Syndrome, Edwards Syndrome, Patau Syndrome, Turner Syndrome
Interventions
Not listed
Lead sponsor
Sequenom, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 16, 2015 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Non-invasive Prenatal Diagnostic Validation Study

NCT01574781
View directory record Official record
Conditions
Chromosome 13 Aneuploidy, Chromosome 18 Aneuploidy, Chromosome 21 Aneuploidy, Sex Chromosome Aberrations, Other Microdeletions
Interventions
Blood draw, Cheek swab/Saliva Sampling
Procedure
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,781 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2013 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Non-Invasive Chromosomal Evaluation of Trisomy Study

NCT02201862
View directory record Official record
Conditions
Aneuploidy, Trisomy 21, Trisomy 18, Trisomy 13, Down Syndrome
Interventions
Not listed
Lead sponsor
Cindy Cisneros
Industry
Eligibility
18 Years to 60 Years · Female only
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
3
States / cities
San Diego, California • Oaks, Pennsylvania • Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 29, 2020 · Synced Jul 21, 2026, 11:10 AM EDT
Recruiting No phase listed Observational

The ADVANCE (Assay Development and Validation for Pre-Natal and Obstetric Conditions) Study is the Largest U.S.-Based Prospective Study Demonstrating a Circulating Fetal Cell (CFC) Based Approach to Non-invasive Fetal Risk Assessment

NCT07643896
View directory record Official record
Conditions
Pregnant Individuals, Aneuploidy, Down Syndrome (Trisomy 21), 22q11.2 Deletion Syndrome, Trisomy 13, Trisomy 18, Sex Chromosome Abnormalities
Interventions
Not listed
Lead sponsor
BillionToOne Inc.
Industry
Eligibility
Female only
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
6
States / cities
Phoenix, Arizona • West Covina, California • Sarasota, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Jul 21, 2026, 11:10 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Whole Blood Specimen Collection From Pregnant Subjects

NCT02430584
View directory record Official record
Conditions
Down Syndrome, Edwards Syndrome, Patau Syndrome, Klinefelter Syndrome, Turner Syndrome, DiGeorge Syndrome, Perinatal Infections
Interventions
Observational - no intervention
Other
Lead sponsor
Progenity, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 16, 2020 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

SNP-based Microdeletion and Aneuploidy RegisTry (SMART)

NCT02381457
View directory record Official record
Conditions
22q11 Deletion Syndrome, DiGeorge Syndrome, Trisomy 21, Trisomy 18, Trisomy 13, Monosomy X, Sex Chromosome Abnormalities, Cri-du-Chat Syndrome, Angelman Syndrome, Prader-Willi Syndrome, 1p36 Deletion Syndrome
Interventions
Not listed
Lead sponsor
Natera, Inc.
Industry
Eligibility
18 Years to 48 Years · Female only
Enrollment
20,960 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
16
States / cities
San Francisco, California • Camden, New Jersey • Mount Laurel, New Jersey + 10 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2021 · Synced Jul 21, 2026, 11:10 AM EDT
Completed No phase listed Observational

Prenatal Screening for Down Syndrome With DNAFirst

NCT01966991
View directory record Official record
Conditions
Trisomy 21, Trisomy 18, Trisomy 13, Monosomy X
Interventions
Not listed
Lead sponsor
Women and Infants Hospital of Rhode Island
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Feb 21, 2018 · Synced Jul 21, 2026, 11:10 AM EDT