PErsonalized Genomics for Prenatal Abnormalities Screening USing Maternal Blood
PEGASUS-2
1 other identifier
interventional
7,849
1 country
6
Brief Summary
This project aims to provide high- quality evidence to inform decisions by health care organisations about using first-tier non-invasive prenatal screening (NIPS) to replace traditional screening tests for trisomy 21, and potentially to screen for other fetal chromosome anomalies. We will compare the current screening approach of second-tier NIPS with the use of first-tier NIPS in a large cohort of pregnant women.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Jan 2020
Longer than P75 for not_applicable
6 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 21, 2019
CompletedFirst Posted
Study publicly available on registry
February 5, 2019
CompletedStudy Start
First participant enrolled
January 13, 2020
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 31, 2023
CompletedStudy Completion
Last participant's last visit for all outcomes
June 30, 2025
CompletedFebruary 12, 2025
February 1, 2025
4 years
January 21, 2019
February 10, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Gestational age at diagnosis
gestational age at final result in the sub-set of participants that have received a positive NIPS result and that have been offered diagnostic testing
Up to 24 weeks of gestational age
Secondary Outcomes (9)
Gestational age at negative screening result
Up to 24 weeks of gestational age
Gestational age at positive screening result
Up to 24 weeks of gestational age
proportion of women with no results
Up to 24 weeks of gestational age
numbers of days for women with false positive result of screen to wait for result of definite test
Up to 24 weeks of gestational age
Change in PROMIS-29 Score
At weeks of gestation 10-13, week 16 and week 22
- +4 more secondary outcomes
Study Arms (2)
Standard of care (2nd tier NIPS)
ACTIVE COMPARATORFor the standard-of-care arm (2nd tier NIPS) women will undergo Traditional integrated prenatal screening i.e. traditional biochemical (+/- NT) and those with a positive screen for T21 or T18 will be offered Second-tier Non-invasive prenatal screening (NIPS) (for T21, T18, T13) or Invasive prenatal testing for fetal aneuploidy. Ultrasound examination in first and second trimester will be done based on clinical care practice ordered by health care provider. Pregnant women with a positive NIPS test will be offered Invasive prenatal testing for fetal aneuploidy (fetal chromosome analysis).
First-tier NIPS
EXPERIMENTALFor the intervention arm (1st tier NIPS) women will receive First-tier Non-invasive prenatal screening (NIPS) i.e. provide a blood sample between 10-13+5 weeks gestation with NIPS results within 7 - 10 days of sample collection. Ultrasound examination in first and second trimester will be done based on clinical care practice ordered by health care provider. In case of a failed NIPS test (expected to be between 2% and 4% of samples), a new blood sample will be drawn for NIPS retest as well as for a traditional SIPS(serum integrated prenatal screening) or QUAD(quadruple marker prenatal screening) screen (depending on gestational age). Pregnant women with a positive NIPS test will be offered Invasive prenatal testing for fetal aneuploidy (fetal chromosome analysis).
Interventions
biochemical prenatal screening with or without nuchal translucency by US
genomics based NIPS after a positive traditional prenatal screen
genomics based NIPS at first trimester
amniocentesis or chorionic villi sampling (CVS)
Eligibility Criteria
You may qualify if:
- Pregnant women 19 years or older wanting prenatal screening
- +6 wks determined by dating ultrasound or last menstrual period.
- Not intending to pursue self pay NIPT
You may not qualify if:
- Known fetal anomaly at the time of recruitment
- Multiple gestation
- Known twin demise
- Planned CVS or amnio for known genetic condition.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- CHU de Quebec-Universite Lavallead
- Genome Quebeccollaborator
- Genome British Columbiacollaborator
- Genome Albertacollaborator
- Ontario Research Fundcollaborator
- Laval Universitycollaborator
- St. Justine's Hospitalcollaborator
- Ottawa Hospital Research Institutecollaborator
- McGill Universitycollaborator
- University of British Columbiacollaborator
- University of Albertacollaborator
- Genome Canadacollaborator
- Canadian Institutes of Health Research (CIHR)collaborator
Study Sites (6)
Kelowna Regional Fertility Center
Kelowna, British Columbia, V1Y 1P2, Canada
Prince Rupert Regional Hospital
Prince Rupert, British Columbia, V8J 2A6, Canada
Children's & Women's Health Centre
Vancouver, British Columbia, V6H 3N1, Canada
CHU Ste-Justine
Montreal, Quebec, H3T 1C5, Canada
CHU de Québec - Université Laval
Québec, Quebec, G1L3L5, Canada
CIUSSS Côte-Nord
Sept-Îles, Quebec, G4R 0N9, Canada
Related Publications (1)
Badeau M, Lindsay C, Blais J, Nshimyumukiza L, Takwoingi Y, Langlois S, Legare F, Giguere Y, Turgeon AF, Witteman W, Rousseau F. Genomics-based non-invasive prenatal testing for detection of fetal chromosomal aneuploidy in pregnant women. Cochrane Database Syst Rev. 2017 Nov 10;11(11):CD011767. doi: 10.1002/14651858.CD011767.pub2.
PMID: 29125628BACKGROUND
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Sylvie Langlois, MD FRCPC
University of British Columbia
- PRINCIPAL INVESTIGATOR
Francois Rousseau, MD MSc FRCPC
CHU de Québec - Université Laval
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- SCREENING
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Professor-doctor
Study Record Dates
First Submitted
January 21, 2019
First Posted
February 5, 2019
Study Start
January 13, 2020
Primary Completion
December 31, 2023
Study Completion
June 30, 2025
Last Updated
February 12, 2025
Record last verified: 2025-02
Data Sharing
- IPD Sharing
- Will not share