Non-invasive Prenatal Diagnosis of β-Thalassemia by Detection of the Cell-Free Fetal DNA in Maternal Circulation
mahmoud, S., aboalwafa, H., Ali, E., Ahmed, N., mahmoud, M., rashed, S. (2019). Non-invasive Prenatal Diagnosis of β-Thalassemia by Detection of the Cell-Free Fetal DNA in Maternal Circulation. EKB Journal Management System, 23(3), 156-167. doi: 10.21608/smj.2019.15466.1034
sara talal mahmoud; hasnaa ahmed aboalwafa; Eman Hassan Ali; Nesma Mokhtar Ahmed; mohamed hamdy mahmoud; shimaa anwar rashed. "Non-invasive Prenatal Diagnosis of β-Thalassemia by Detection of the Cell-Free Fetal DNA in Maternal Circulation". EKB Journal Management System, 23, 3, 2019, 156-167. doi: 10.21608/smj.2019.15466.1034
mahmoud, S., aboalwafa, H., Ali, E., Ahmed, N., mahmoud, M., rashed, S. (2019). 'Non-invasive Prenatal Diagnosis of β-Thalassemia by Detection of the Cell-Free Fetal DNA in Maternal Circulation', EKB Journal Management System, 23(3), pp. 156-167. doi: 10.21608/smj.2019.15466.1034
mahmoud, S., aboalwafa, H., Ali, E., Ahmed, N., mahmoud, M., rashed, S. Non-invasive Prenatal Diagnosis of β-Thalassemia by Detection of the Cell-Free Fetal DNA in Maternal Circulation. EKB Journal Management System, 2019; 23(3): 156-167. doi: 10.21608/smj.2019.15466.1034

Non-invasive Prenatal Diagnosis of β-Thalassemia by Detection of the Cell-Free Fetal DNA in Maternal Circulation

Sohag Medical Journal
Article 30, Volume 23, Issue 3, July 2019, Page 156-167  XML PDF (390.32 K)
Document Type: Original Article
DOI: 10.21608/smj.2019.15466.1034
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Authors
sara talal mahmoud email 1; hasnaa ahmed aboalwafa2; Eman Hassan Ali2; Nesma Mokhtar Ahmed3; mohamed hamdy mahmoud1; shimaa anwar rashed2
1clinical and chemical pathology department, medical faculty, sohag university
2clinical and chemical pathology department, medical faculty, sohag university , sohag
3Clinical pathology department, faculty of medicine, sohag University, sohag, Egypt
Abstract
β-thalassemia is one of the most frequent autosomal recessive diseases that has a high recurrence in people of the Mediterranean zone, the Middle East, Tropical Africa, and the Caribbean. Parents who are both carriers for β-thalassemia have a 25% danger to give a child with β-thalassemia major. The most accessible strategies for pre-birth diagnosis are chorionic villus sampling (CVS) somewhere in the range of 11 and 14 weeks and amniocentesis following 15 weeks and both are invasive procedures and cause dangers to the fetus and mother, having a danger of abortion 1 in 100–200 and 1 in 200–400, respectively. The accuracy of these methods is estimated to be 98–99%. Cell-free fetal DNA (cff-DNA) can be found in maternal plasma following 18 days from fertilized egg implantation in Pregnancies after lab conception and resembles extracellular DNA. The discovery of cff-DNA in maternal plasma has led to the evolution of noninvasive prenatal diagnosis(NIPND). Some genomic loci of cff-DNA show methylated sequences unique in relation to circling maternal DNA, this trademark can be utilized to evaluate and demonstrate the presence of fetal DNA during pregnancy, independent of the sex of the embryo. the two major limitations for (NIPND) are the small amount of cff-DNA in maternal blood and its co-existence with maternal free DNA.we study investigations used in the detection of inherited mutation of β-thalassemia in maternal plasma during pregnancy using cell-free fetal DNA and evaluate the diagnostic test performance of cff-DNA for this issue.
Keywords
non invasive prenatal diagnosis; thalassesmia; cell -free fetal DNA
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