Abstract | OBJECTIVE: We examined the potential value of combining ultrasound and non-invasive prenatal screening ( NIPS) of maternal blood to screen for major aneuploidies as an early approach before selective fetal reduction from twin pregnancy to singleton. STUDY DESIGN: The sample was composed of pregnant women with di-chorionic di-amniotic twins who chose to undergo fetal reduction to singleton at 12-24 weeks of gestation. These women were asked to provide a blood sample for cell-free fetal DNA (cffDNA) testing prior to fetal reduction. RESULTS: A total of 24 pregnant women with a twin pregnancy prior to fetal reduction to singleton were enrolled. There were 8 cases with structural anomalies (33.3%) in one twin that dictated fetal reduction. The proportion of patients who underwent selective fetal reduction for fetal abnormalities was larger than in several other studies. The NIPS identified 1 case of Trisomy 13 (4.2%). The other 15 cases (62.5%) had no structural or chromosomal anomalies. The decision to undergo elective reduction of twin pregnancy to singleton was made for social reasons or upon the parents' request. Given the 33% of structural anomalies in the cohort, a cost analysis indicated that this procedure was 6.6-fold less expensive (vs. 4.6-fold with 4% structural anomalies in other publications) than conducting invasive procedures for the entire cohort. CONCLUSION: The findings suggest that an early anatomical scan and cffDNA can increase the overall safety margin and reduce interventional procedures before elective reduction of twin pregnancy to singleton. However, a larger cohort is needed to confirm these results.
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Authors | Yaakov Melcer, Ran Svirsky, Shira Dvash, Marina Pekar-Zlotin, Hamutal Meiri, Ron Maymon |
Journal | European journal of obstetrics, gynecology, and reproductive biology
(Eur J Obstet Gynecol Reprod Biol)
Vol. 259
Pg. 105-112
(Apr 2021)
ISSN: 1872-7654 [Electronic] Ireland |
PMID | 33639415
(Publication Type: Journal Article)
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Copyright | Copyright © 2021 Elsevier B.V. All rights reserved. |
Chemical References |
- Cell-Free Nucleic Acids
- DNA
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Topics |
- Cell-Free Nucleic Acids
- DNA
- Female
- Humans
- Pregnancy
- Pregnancy Reduction, Multifetal
- Pregnancy, Twin
- Prenatal Diagnosis
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