cell free fetal dna testing in maternal blood of romanian pregnant women
نویسندگان
چکیده
background: the discovery of circulating fetal dna in maternal blood led to the discovery of new strategies to perform noninvasive testing for prenatal diagnosis. objective: the purpose of the study was to detect fetal aneuploidy at chromosomes 13, 18, 21, x, and y by analysis of fetal cell-free dna from maternal blood, without endangering pregnancy. materials and methods: this retrospective study has been performed in bucharest at medlife maternal and fetal medicine department between 2013-2014. in total 201 women were offered noninvasive prenatal test. maternal plasma samples were collected from women at greater than 9 weeks of gestation after informed consent and genetics counseling. results: from 201 patients; 28 (13.93%) had screening test with high risk for trisomy 21, 116 (57.71%) had advanced maternal age, 1 (0.49%) had second trimester ultrasound markers and the remaining 56 patients (27.86%) performed the test on request. of those patients, 189 (94.02%) had a “low risk” result (<1/10,000). of those who had a low risk result, 2 continued on to have amniocentesis with normal results.five patients (2.48%) received “high risk” results (>99% risk) all for trisomy 21 (t21). t21 was confirmed by amniocentesis in 1 patient and the other 4 patients declined confirmation. the 7 remaining patients (3.48%) had a low fetal fraction of dna. conclusion: it is probably that prenatal diagnosis using fetal dna in maternal blood would play an increasingly role in the future practice of prenatal testing because of high accuracy.
منابع مشابه
Cell free fetal DNA testing in maternal blood of Romanian pregnant women
BACKGROUND The discovery of circulating fetal DNA in maternal blood led to the discovery of new strategies to perform noninvasive testing for prenatal diagnosis. OBJECTIVE The purpose of the study was to detect fetal aneuploidy at chromosomes 13, 18, 21, X, and Y by analysis of fetal cell-free DNA from maternal blood, without endangering pregnancy. MATERIALS AND METHODS This retrospective s...
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Background: The aim of this study was to compare noninvasive prenatal testing (NIPT) of cell‐free DNA in maternal blood and amniocentesis in the diagnosis of aneuploidy. This study was designed to evaluate sensitivity, specificity, accuracy, positive predictive value and negative predictive value of NIPT for detection of aneuploidies compared gold standard test of amniocentesis. Materials and m...
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OBJECTIVE To investigate potential performance of cell-free DNA (cfDNA) testing in maternal blood in detecting fetal triploidy. METHODS Plasma and buffy coat samples obtained at 11-13 weeks' gestation from singleton pregnancies with diandric triploidy (n=4), digynic triploidy (n=4), euploid fetuses (n=48) were sent to Natera, Inc. (San Carlos, Calif., USA) for cfDNA testing. Multiplex polymer...
متن کاملPrenatal Detection of Fetal Triploidy from Cell-Free DNA Testing in Maternal Blood
Objective: To investigate potential performance of cell-free DNA (cfDNA) testing in maternal blood in detecting fetal triploidy. Methods: Plasma and buffy coat samples obtained at 11–13 weeks’ gestation from singleton pregnancies with diandric triploidy (n = 4), digynic triploidy (n = 4), euploid fetuses (n = 48) were sent to Natera, Inc. (San Carlos, Calif., USA) for cfDNA testing. Multiplex p...
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in previous years, identification of fetal cells in maternal blood circulation has caused a new revolution in non-invasive method of prenatal diagnosis. low number of fetal cells in maternal blood and long-term survival after pregnancy limited the use of fetal cells in diagnostic and clinical applications. with the discovery of cell-free fetal dna (cffdna) in plasma of pregnant women, access to...
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عنوان ژورنال:
international journal of reproductive biomedicineجلد ۱۳، شماره ۱۰، صفحات ۶۲۳-۰
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