Noninvasive prenatal testing (NIPT) is one of the most common prenatal screening tests used worldwide. Trisomy Test belongs to NIPT tests based on low-coverage whole-genome sequencing. In our prospective study, 7279 samples of pregnant women collected during approximately two years were analyzed. In this cohort, 117 positive cases for trisomies 21, 18, and 13 were reported. An in-house designed bioinformatic pipeline and proprietary biostatistical approach was used for the detection of trisomies. The pooled sensitivity and specificity of our test reached 99.12% and 99.94%, respectively. The proportion of repeatedly uninformative results after repeated blood draws was 1.11%. Based on the presented results, we can confirm that the Trisomy Test is fully comparable with other commercial NIPT tests available worldwide.
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http://dx.doi.org/10.3390/diagnostics9040138 | DOI Listing |
J Endocr Soc
January 2025
Department of Pathology, Stanford University, Stanford, CA 94304, USA.
In the last 10 years the field of prenatal diagnosis has been significantly reshaped followed by the implementation of noninvasive prenatal cell-free DNA (cfDNA) testing methodologies in clinical practice. Based on a superior performance and higher sensitivity and specificity than the former practice of biochemical markers screening, the American College of Obstetricians and Gynecologists and American College of Medical Genetics and Genomics recommend noninvasive prenatal cfDNA screening for trisomy 21, 18, 13, and sex chromosome aneuploidy to all pregnant people. While cfDNA screening is helpful in risk assessment for the most common autosomal trisomies, cfDNA also provides information about fetal sex chromosomes.
View Article and Find Full Text PDFArch Gynecol Obstet
January 2025
Department of Obstetrics and Gynaecology, University Hospital Tübingen, University of Tübingen, Calwerstrasse 7, 72076, Tübingen, Germany.
Objective: To examine the impact of a new image enhancement technique on the distribution of NT measurements.
Methods: In this retrospective study, nuchal translucency (NT) images that were taken with the GE Voluson E22 ultrasound machine between May and September 2024 were collected. One operator took manual and automated NT measurements in an NT image without radiant enhancement mode followed by automated measurements in NT images with minimum, medium and maximum radiant mode.
Brain Sci
December 2024
Department of Health and Human Physiology, University of Iowa, Iowa City, IA 52242, USA.
Background/objectives: Cognitive functions are a crucial part of daily living, especially for adults with Down syndrome (DS) who have a high likelihood of developing Alzheimer's disease in adulthood. In addition, adults with DS move slower and are not meeting the standard aerobic activity guidelines each week. The aim of this study was to examine if Assisted Cycle Therapy (ACT) would improve cognitive planning as measured by the Tower of London (TOL), set switching as measured by the modified Wisconsin Card Sorting Test, and spatial memory as measured by the Corsi Block Test in adults with DS as compared to self-paced cycling.
View Article and Find Full Text PDFMed Sci (Basel)
December 2024
Department of Medical Genetics, Faculty of Medicine, Medical University of Varna, 9002 Varna, Bulgaria.
: NIPT is a widely implemented method for prenatal screening of chromosomal disorders. Its introduction initiated the practice of counseling women pre- and post-analytically. Since the test's usage is established in different conditions, comparing data from various socioeconomic and cultural backgrounds would be of scientific value.
View Article and Find Full Text PDFJ Gynecol Obstet Hum Reprod
January 2025
Laboratoire de Dépistage Périnatal, Centre de Biologie Pathologie et Génétique, Centre Hospitalier Universitaire, Lille, France. Electronic address:
Background: In France, legislation concerning pregnancy monitoring only considers screening for Down syndrome (T21), while the contingent introduction of the circulating cell free DNA test (DPNI) also allows screening for trisomies 13 and 18 with similar performances.
Methods: We retrospectively studied more than 800,000 patients among whom 7971 presented serum markers suggestive of T18 (but without increased risk of T21), of which 438 benefited from NIPT and of a complete pregnancy follow-up.
Results: We show that the use of a specific risk calculation for T18 would have improve the relevance of the prescription.
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