Ontology type: schema:ScholarlyArticle Open Access: True
2018-02-13
AUTHORSMun Young Chang, Soyeon Ahn, Min Young Kim, Jin Hee Han, Hye-Rim Park, Han Kyu Seo, Jinsun Yoon, Seungmin Lee, Doo-Yi Oh, Changsoo Kang, Byung Yoon Choi
ABSTRACTPreviously, we introduced a noninvasive prenatal testing (NIPT) protocol for diagnosing compound heterozygous autosomal recessive point mutations via maternal plasma DNA and simulated control genomic DNA sampling based on fetal DNA fraction. In our present study, we have improved our NIPT protocol to make it possible to diagnose homozygous autosomal recessive point mutations without the need to acquire fetal DNA fraction. Moreover, chi-squared test and empirical statistical range based on the proportion of mutant allele reads among the total reads served as the gatekeeping method. If this method yielded inconclusive results, then the Bayesian method was performed; final conclusion was drawn from the results of both methods. This protocol was applied to three families co-segregating congenital sensorineural hearing loss with monogenic homozygous mutations in prevalent deafness genes. This protocol successfully predicted the fetal genotypes from all families without the information about fetal DNA fraction using one-step dPCR reactions at least for these three families. Furthermore, we suspect that confirmatory diagnosis under this protocol is possible, not only by using picodroplet dPCR, but also by using the more readily available chip-based dPCR, making our NIPT protocol more useful in the diagnosis of autosomal recessive point mutations in the future. More... »
PAGES2877
http://scigraph.springernature.com/pub.10.1038/s41598-018-21236-w
DOIhttp://dx.doi.org/10.1038/s41598-018-21236-w
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/29440752
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