Increased frequency of de novo copy number variants in congenital heart disease by integrative analysis of single nucleotide polymorphism array and exome sequence data

Glessner, J. T., Bick, A. G., Ito, K., Homsy, J. G., Rodriguez-Murillo, L., Fromer, M., Mazaika, E., Vardarajan, B., Italia, M., Leipzig, J., DePalma, S. R., Golhar, R., Sanders, S. J., Yamrom, B., Ronemus, M., Iossifov, I., Willsey, A. J., State, M. W., Kaltman, J. R., White, P. S., Shen, Y., Warburton, D., Brueckner, M., Seidman, C., Goldmuntz, E., Gelb, B. D., Lifton, R., Seidman, J., Hakonarson, H., Chung, W. K. (October 2014) Increased frequency of de novo copy number variants in congenital heart disease by integrative analysis of single nucleotide polymorphism array and exome sequence data. Circulation Research, 115 (10). pp. 884-96. ISSN 0009-7330

URL: http://www.ncbi.nlm.nih.gov/pubmed/25205790
DOI: 10.1161/circresaha.115.304458

Abstract

RATIONALE: Congenital heart disease (CHD) is among the most common birth defects. Most cases are of unknown pathogenesis. OBJECTIVE: To determine the contribution of de novo copy number variants (CNVs) in the pathogenesis of sporadic CHD. METHODS AND RESULTS: We studied 538 CHD trios using genome-wide dense single nucleotide polymorphism arrays and whole exome sequencing. Results were experimentally validated using digital droplet polymerase chain reaction. We compared validated CNVs in CHD cases with CNVs in 1301 healthy control trios. The 2 complementary high-resolution technologies identified 63 validated de novo CNVs in 51 CHD cases. A significant increase in CNV burden was observed when comparing CHD trios with healthy trios, using either single nucleotide polymorphism array (P=7x10(-5); odds ratio, 4.6) or whole exome sequencing data (P=6x10(-4); odds ratio, 3.5) and remained after removing 16% of de novo CNV loci previously reported as pathogenic (P=0.02; odds ratio, 2.7). We observed recurrent de novo CNVs on 15q11.2 encompassing CYFIP1, NIPA1, and NIPA2 and single de novo CNVs encompassing DUSP1, JUN, JUP, MED15, MED9, PTPRE SREBF1, TOP2A, and ZEB2, genes that interact with established CHD proteins NKX2-5 and GATA4. Integrating de novo variants in whole exome sequencing and CNV data suggests that ETS1 is the pathogenic gene altered by 11q24.2-q25 deletions in Jacobsen syndrome and that CTBP2 is the pathogenic gene in 10q subtelomeric deletions. CONCLUSIONS: We demonstrate a significantly increased frequency of rare de novo CNVs in CHD patients compared with healthy controls and suggest several novel genetic loci for CHD.

Item Type: Paper
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > copy number variants
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > de novo mutation
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > single nucleotide polymorphism
Investigative techniques and equipment > whole exome sequencing
Investigative techniques and equipment > assays > whole exome sequencing
CSHL Authors:
Communities: CSHL labs > Iossifov lab
CSHL labs > Wigler lab
Depositing User: Matt Covey
Date: 24 October 2014
Date Deposited: 21 Nov 2014 17:24
Last Modified: 21 Nov 2014 17:24
PMCID: PMC4209190
Related URLs:
URI: http://repository.cshl.edu/id/eprint/30928

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