Trisomy 21 and Other Fetal Aneuploidy
Conditions
Keywords
fetal, screening test, trisomy, aneuploidy, copy number variant
Brief summary
The purpose of this study is to develop and evaluate a blood test and automated microfluidic test platform for the prenatal screening of fetal aneuploidy.
Interventions
analysis of cell-free DNA in maternal plasma
Sponsors
Study design
Eligibility
Inclusion criteria
1. Subject is at least 18 years old and can provide informed consent; 2. Subject has a viable singleton or twin pregnancy; 3. Subject is confirmed to be at least 10 weeks, 0 days gestation at the time of the study blood draw; 4. Subject is planning to undergo chorionic villus sampling and/or amniocentesis for the purpose of genetic analysis of the fetus because of a suspected fetal chromosomal anomaly based on cell-free DNA test results, standard serum screening result, or fetal ultrasound abnormality. 5. OR the subject has already undergone chorionic villus sampling and/or amniocentesis and is known to have a fetus with a chromosomal abnormality confirmed by genetic analysis.
Exclusion criteria
1. Subject (the mother) has known aneuploidy; 2. Subject is pregnant with more than two fetuses or has had sonographic evidence of three or more gestational sacs at any time during pregnancy; 3. Subject has a fetal demise (including natural or elective reduction) identified prior to consent; 4. Subject has history of malignancy treated with chemotherapy and/or major surgery, or bone marrow transplant.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Comparison of blood test to fetal karyotype | 21 months | Maternal plasma cell-free DNA will be analyzed to determine copy number of specific chromosomes and compared to the fetal karyotype as obtained through invasive diagnostic testing of the fetus. |
Countries
Australia, Belgium, Canada, Portugal, Spain, United Kingdom