Volume 9, Issue 3 (Vol.9 No.3 Oct 2020)                   rbmb.net 2020, 9(3): 315-323 | Back to browse issues page

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Ahmadi M H, Amirizadeh N, Rabiee M, Rahimi-Sharbaf F, Pourfathollah A A. Noninvasive Fetal Sex Determination by Real-Time PCR and TaqMan Probes. rbmb.net. 2020; 9 (3) :315-323
URL: http://rbmb.net/article-1-489-en.html
Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
Abstract:   (112 Views)
Background: Noninvasive fetal sex determination by analyzing Y chromosome-specific sequences is very useful in the management of cases related to sex-linked genetic diseases. The aim of this study was to establish a non-invasive fetal sex determination test using Real-Time PCR and specific probes.

Methods: The study was a prospective observational cohort study conducted from August 2018 to September 2019. Venous blood samples were collected from 25 Iranian pregnant women at weeks 7 to 25 of gestation. Cell-free DNA (cfDNA) was isolated from the plasma of samples and fetal sex was determined by SRY gene analysis using the Real-Time PCR technique. In the absence of SRY detection, the presence of fetal DNA was investigated using cfDNA treated with BstUI enzyme and PCR for the epigenetic marker RASSF1A.

Results: Of the total samples analyzed, 48% were male and 52% female. The RASSF1A assay performed on SRY negative cases also confirmed the presence of cell-free fetal DNA. Genotype results were in full agreement with neonate gender, and the accuracy of noninvasive fetal sex determination was 100%.

Conclusions: Fetal sex determination using the strategy applied in this study is noninvasive and highly accurate and can be exploited in the management of sex-linked genetic diseases.
Full-Text [PDF 294 kb]   (51 Downloads)    
Type of Article: Original Article | Subject: Molecular Biology
Received: 2020/04/18 | Accepted: 2020/05/7 | Published: 2020/12/1

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