- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05312814
Clinical Utility of the Addition of a SNP-based NIPT Zygosity Determination in Twin Pregnancy Management. (ZTWINS)
April 4, 2022 updated by: Natera, Inc.
The ZTWINS registry study is an observational, prospective, multi-center study observing women carrying a twin pregnancy who receive snp-based non-invasive prenatal screening and zygosity assessment as part of their medical care.
Study Overview
Status
Recruiting
Detailed Description
This observational data collection study will include subjects with ultrasound-confirmed twin pregnancy and planned NIPS zygosity assessment as a part of their clinical care.
Initial chorionicity assessment and, when available, planned twin pregnancy management (e.g., frequency of prenatal ultrasounds, maternal fetal medicine (MFM) referral etc) will be recorded in the study database.
Following zygosity results being returned through clinical care NIPS, updated chorionicity & amnionicity will again be recorded in the study database.
Other clinical data in the medical record as part of clinical care, including monochorionic twin pregnancy complications (TTTS, FTC referral, etc), placenta pathology findings, and delivery and neonatal outcomes will also be recorded in the study database.
There will be no study blood sample collection or other study procedures performed as part of this study.
Study Type
Observational
Enrollment (Anticipated)
700
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: ZTWINS Team
- Phone Number: (650) 249-9090
- Email: ztwins@natera.com
Study Locations
-
-
California
-
San Diego, California, United States, 92123
- Recruiting
- Rady Children's Specialists of San Diego, San Diego Perinatal Center
-
Contact:
- Deirdre McCullough, MD
-
-
Colorado
-
Aurora, Colorado, United States, 80045
- Recruiting
- University of Colorado
-
Contact:
- K.Joseph Hurt, MD, PhD
-
-
Maryland
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Annapolis, Maryland, United States, 21401
- Recruiting
- Anne Arundel Medical Center/Luminis Health
-
Contact:
- Clark Johnson, MD
-
-
Minnesota
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Rochester, Minnesota, United States, 55905
- Recruiting
- Mayo Clinic
-
Contact:
- Myra Wick, MD, PhD
-
-
New York
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New York, New York, United States, 10128
- Recruiting
- Carnegie Imaging for Women
-
Contact:
- Andrei Rebarber, MD
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Rochester, New York, United States, 14642
- Recruiting
- University of Rochester
-
Contact:
- Neil Seligman, MD
-
-
North Carolina
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Chapel Hill, North Carolina, United States, 27516
- Recruiting
- UNC Chapel Hill
-
Contact:
- Neeta Vora, MD
-
-
Ohio
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Cincinnati, Ohio, United States, 45242
- Recruiting
- Seven Hills/ Axia
-
Contact:
- Gerard Reilly, MD
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 55 years (Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
Female
Sampling Method
Non-Probability Sample
Study Population
Pregnant women carrying a twin pregnancy
Description
Inclusion Criteria:
- Women with an ultrasound confirmation of twin pregnancy
Exclusion Criteria:
- Singleton or non-twin multiple pregnancy
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
---|
Twin pregnancies undergoing non-invasive prenatal screening
Women carrying a twin pregnancy undergoing non-invasive prenatal screening for zygosity and aneuploidy syndromes. No drug/device will be administered; clinical data will be collected for research analysis. |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Assess clinical utility of combining NIPT-based zygosity measurements with ultrasound chorionicity assessments for the management of twin pregnancies.
Time Frame: 2 years
|
Primary outcome will be measured by determining the overall frequency of NIPT-determined monozygosity among twin pregnancies; the frequency of discordance between NIPT-determined zygosity and ultrasound only chorionicity assessments; and the proportion of twin pregnancies with twin--twin transfusion syndrome (TTTS) that are diagnosed late as compared with historical rates.
|
2 years
|
Frequency of monozygosity
Time Frame: 2 years
|
Measuring overall frequency of NIPT-determined monozygosity among twin pregnancies, measured by the number monozygotic pregnancies over the total number of twin pregnancies in the study.
|
2 years
|
Frequency of changed chorionicity assessment
Time Frame: 2 years
|
The frequency of discordance between NIPT-determined zygosity and ultrasound only chorionicity assessments, as measured by the total number of pregnancies with a change in chorinicity assessment following the NIPT-based zygsity results release.
|
2 years
|
Frequency of late TTTS diagnosis
Time Frame: 2 years
|
The frequency of late diagnosis of Twin to Twin Transfusion Syndrome (TTTS) in twin pregnancies with TTTS will be compared with historical rates of late TTTS diagnosis.
|
2 years
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Ruben Quintero, MD, The Fetal Institute
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
October 1, 2021
Primary Completion (Anticipated)
November 1, 2023
Study Completion (Anticipated)
November 1, 2023
Study Registration Dates
First Submitted
February 24, 2022
First Submitted That Met QC Criteria
April 1, 2022
First Posted (Actual)
April 6, 2022
Study Record Updates
Last Update Posted (Actual)
April 12, 2022
Last Update Submitted That Met QC Criteria
April 4, 2022
Last Verified
April 1, 2022
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 21-051-NPT
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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