Analysis of chromosome 22q11 copy number variations by multiplex ligation-dependent probe amplification for prenatal diagnosis of congenital heart defect View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2015-12

AUTHORS

Jingjing Zhang, Dingyuan Ma, Yan Wang, Li Cao, Yun Wu, Fengchang Qiao, An Liu, Li Li, Ying Lin, Gang Liu, Cuiyun Liu, Ping Hu, Zhengfeng Xu

ABSTRACT

BACKGROUND: Congenital heart defects (CHD) represent one of the most common birth defects. This study aimed to evaluate the value of multiplex ligation-dependent probe amplification (MLPA) as a tool to detect the copy number variations (CNVs) of 22q11 in fetuses with CHD. RESULTS: A large cohort of 225 fetuses with CHD was screened by fetal echocardiography. Once common chromosome abnormalities in 30 fetuses were screened out by conventional G-banding analysis, the CNVs of chromosome 22q11 in the remaining 195 fetuses were determined by MLPA for prenatal genetic counseling. In 195 CHD fetuses with normal karyotype, 11 cases had pathological CNVs, including 22q11.2 deletion (seven cases), the deletion of 22q11 cat eye syndrome (CES) region (one case), 22q11.2 duplication (one case), 22q13.3 deletion (one case) and 17p13.3 deletion (one case). In total, our findings from MLPA screening represented 4.9 % in our cohort. Among these, three cases were inherited CNVs, and eight cases were de novo. These CNVs were further verified by single nucleotide polymorphism (SNP)-array analysis, and their chromosomal location was refined. CONCLUSION: This study indicated that MLPA could serve as an effective test for routine prenatal diagnosis of 22q11 in fetuses with CHD. More... »

PAGES

100

Identifiers

URI

http://scigraph.springernature.com/pub.10.1186/s13039-015-0209-5

DOI

http://dx.doi.org/10.1186/s13039-015-0209-5

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https://app.dimensions.ai/details/publication/pub.1032080663

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/26715944


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