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Updated: May 10, 2026
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Pre-Implantation Genetic Testing for Aneuploidy on a Semiconductor Based Next-Generation Sequencing Platform
Published on: August 17, 2022
Non-invasive prenatal testing for aneuploidy: current status and future prospects.
P Benn1, H Cuckle, E Pergament
1Department of Genetics and Developmental Biology, University of Connecticut Health Center, Farmington, CT, USA. benn@nso1.uchc.edu
Summary
Non-invasive prenatal testing (NIPT) revolutionizes prenatal screening by analyzing cell-free DNA for aneuploidy. While effective for certain conditions in high-risk pregnancies, it requires confirmation and faces challenges in cost-effectiveness and counseling.
Area of Science:
- Genetics
- Prenatal Diagnostics
- Molecular Biology
Background:
- Non-invasive prenatal testing (NIPT) using cell-free DNA (cfDNA) in maternal plasma is transforming prenatal screening.
- Established screening methods and invasive diagnostic procedures have limitations in scope and risk.
- The need for accurate, safe, and comprehensive prenatal genetic analysis is paramount.
Purpose of the Study:
- To review the current state of NIPT for aneuploidy.
- To compare NIPT with established prenatal screening and diagnostic technologies.
- To discuss the capabilities, limitations, cost-effectiveness, and ethical considerations of NIPT.
Main Methods:
- Review of current NIPT methodologies, including whole-genome sequencing, targeted sequencing, and SNP-based analysis.
- Analysis of clinical trial data demonstrating NIPT efficacy for specific aneuploidies.
- Evaluation of cost-effectiveness models for universal versus contingent NIPT implementation.
Main Results:
- NIPT shows high efficacy for Down, Edwards, and potentially Patau syndromes in high-risk populations.
- Contingent NIPT (used after conventional screening) is cost-effective, unlike universal NIPT.
- Positive NIPT results necessitate confirmation via invasive diagnostic techniques.
Conclusions:
- NIPT is a powerful tool for prenatal aneuploidy screening, particularly for common trisomies.
- Advanced NIPT methods utilizing SNP data offer potential for detecting uniparental disomy, triploidy, and consanguinity.
- Challenges remain in expanding NIPT's scope to detect a broader range of abnormalities and in providing adequate genetic counseling.
