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- W2079531131 endingPage "e1002843" @default.
- W2079531131 startingPage "e1002843" @default.
- W2079531131 abstract "Structural genetic changes, especially copy number variants (CNVs), represent a major source of genetic variation contributing to human disease. Tetralogy of Fallot (TOF) is the most common form of cyanotic congenital heart disease, but to date little is known about the role of CNVs in the etiology of TOF. Using high-resolution genome-wide microarrays and stringent calling methods, we investigated rare CNVs in a prospectively recruited cohort of 433 unrelated adults with TOF and/or pulmonary atresia at a single centre. We excluded those with recognized syndromes, including 22q11.2 deletion syndrome. We identified candidate genes for TOF based on converging evidence between rare CNVs that overlapped the same gene in unrelated individuals and from pathway analyses comparing rare CNVs in TOF cases to those in epidemiologic controls. Even after excluding the 53 (10.7%) subjects with 22q11.2 deletions, we found that adults with TOF had a greater burden of large rare genic CNVs compared to controls (8.82% vs. 4.33%, p = 0.0117). Six loci showed evidence for recurrence in TOF or related congenital heart disease, including typical 1q21.1 duplications in four (1.18%) of 340 Caucasian probands. The rare CNVs implicated novel candidate genes of interest for TOF, including PLXNA2, a gene involved in semaphorin signaling. Independent pathway analyses highlighted developmental processes as potential contributors to the pathogenesis of TOF. These results indicate that individually rare CNVs are collectively significant contributors to the genetic burden of TOF. Further, the data provide new evidence for dosage sensitive genes in PLXNA2-semaphorin signaling and related developmental processes in human cardiovascular development, consistent with previous animal models." @default.
- W2079531131 created "2016-06-24" @default.
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- W2079531131 date "2012-08-09" @default.
- W2079531131 modified "2023-10-16" @default.
- W2079531131 title "Rare Copy Number Variations in Adults with Tetralogy of Fallot Implicate Novel Risk Gene Pathways" @default.
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- W2079531131 doi "https://doi.org/10.1371/journal.pgen.1002843" @default.
- W2079531131 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3415418" @default.
- W2079531131 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/22912587" @default.
- W2079531131 hasPublicationYear "2012" @default.
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