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著者: Harini Ravi, Gabriel McNeill, Shruti Goel, Steven D Meltzer, Nathan Hunkapiller, Allison Ryan, Brynn Levy, Zachary P Demko
雑誌名: PLoS One. 2018;13(2):e0193476. doi: 10.1371/journal.pone.0193476. Epub 2018 Feb 23.
Abstract/Text
INTRODUCTION: Non-invasive prenatal testing (NIPT) for aneuploidy using cell-free DNA in maternal plasma has been widely adopted. Recently, NIPT coverage has expanded to detect subchromosomal abnormalities including the 22q11.2 deletion. Validation of a SNP-based NIPT for detection of 22q11.2 deletions demonstrating a high sensitivity (97.8%) and specificity (99.75%) has been reported. We sought to further demonstrate the performance of a revised version of the test in a larger set of pregnancy plasma samples.
METHODS: Blood samples from pregnant women (10 with 22q11.2-deletion‒affected fetuses and 390 negative controls) were successfully analyzed using a revised SNP-based NIPT for the 22q11.2 deletion. The sensitivity and specificity of the assay were measured.
RESULTS: Sensitivity of the assay was 90% (9/10), and specificity of the assay was 99.74% (389/390), with a corresponding false positive-rate of 0.26%.
DISCUSSION: The data presented in this study add to the growing body of evidence demonstrating the ability of the SNP-based NIPT to detect 22q11.2 deletions with high sensitivity and specificity.
PMID 29474437 PLoS One. 2018;13(2):e0193476. doi: 10.1371/journal.pone.0193476. Epub 2018 Feb 23.
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