4.2 Article

Autosomal and X Chromosome Structural Variants Are Associated with Congenital Heart Defects in Turner Syndrome: The NHLBI GenTAC Registry

期刊

AMERICAN JOURNAL OF MEDICAL GENETICS PART A
卷 170, 期 12, 页码 3157-3164

出版社

WILEY-BLACKWELL
DOI: 10.1002/ajmg.a.37953

关键词

genomics; Turner syndrome; valvular heart disease; congenital heart defects; X chromosome

资金

  1. Baylor College of Medicine [1U54HD083092, 5R01HD039056, 5R01HL090506, 5R01HL091771]
  2. Ohio State University and Nationwide Children's Hospital [5R01HL109758]
  3. US Federal Government [HHSN268200648199C, HHSN268201000048C]
  4. National Institute on Aging [U01AG009740, RC2AG036495, RC4AG039029]
  5. National Eye Institute
  6. Johns Hopkins University [HHSN268200782096C]
  7. Collaborative Genetic Study of Nicotine Dependence ( COGEND) [P01 CA089392]
  8. University of Wisconsin Transdisciplinary Tobacco Use Research Center [P50 DA019706, P50 CA084724]

向作者/读者索取更多资源

Turner Syndrome(TS) is adevelopmental disorder caused by partial or complete loss of one sex chromosome. Bicuspid aortic valve and other left-sided congenital heart lesions (LSL), including thoracic aortic aneurysms and acute aortic dissections, are 30-50 timesmore frequent in TS than in the general population. In 454 TS subjects, we found that LSL are significantly associated with reduced dosage of Xp genes and increased dosage of Xq genes. We also showed that genome-wide copy number variation is increased in TS and identify a common copy number variant (CNV) in chromosome 12p13.31 that is associated with LSL with an odds ratio of 3.7. This CNV contains three protein-coding genes (SLC2A3, SLC2A14, and NANOGP1) and was previously implicated in congenital heart defects in the 22q11 deletion syndrome. In addition, we identified a subset of rare and recurrent CNVs that are also enriched in non-syndromic BAV cases. These observations support our hypothesis that X chromosome and autosomal variants affecting cardiac developmental genes may interact to cause the increased prevalence of LSL in TS. (C) 2016 Wiley Periodicals, Inc.

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