title: Gene-targeted analysis of copy number variants identifies 3 novel associations with coronary heart disease traits.
abstract: BACKGROUND
  Copy number variants (CNVs) are a major form of genomic variation, which may be implicated in complex disease phenotypes. However, investigation of the role of CNVs in coronary heart disease (CHD) traits has been limited.
  
  
  RESULTS
  We examined the use of the cnvHap algorithm for CNV detection, using data for 2500 men from the Second Northwick Park Heart Study (NPHS-II). An Illumina custom chip, including 722 single-nucleotide polymorphisms covering 76 coronary heart disease-trait genes, was used. Common CNVs were significantly associated (at P<0.05, after correction) with coronary heart disease phenotypes in 5 genes. Novel associations of CNVs in toll-like receptor-4 with apolipoprotein AI were replicated (P<0.05) in the Whitehall II cohort (4887 subjects), whereas newly described associations of CNVs in sterol regulatory element-binding protein with apolipoprotein AI and associations of interleukin-6 signal transducer with apolipoprotein B were replicated in the data from 3546 subjects from the North Finnish Birth Cohort 1966 (P<0.05).
  
  
  CONCLUSIONS
  This study supports the use of CNV detection algorithms such as cnvHap as potential tools for the identification of novel CNVs, some of which show significant association and replication with coronary heart disease risk phenotypes. However, the functional basis for these associations requires further substantiation.
authors.affiliation: Center for Cardiovascular Genetics, Institute of Cardiovascular Science, The Royal Free London NHS Foundation Trust, Pond St, London, UK. sean.costelloe@nhs.net
authors.forename: Seán J
authors.initials: SJ
authors.lastname: Costelloe
authors.forename: Julia S
authors.initials: JS
authors.lastname: El-Sayed Moustafa
authors.forename: Fotios
authors.initials: F
authors.lastname: Drenos
authors.forename: Jutta
authors.initials: J
authors.lastname: Palmen
authors.forename: Qiao
authors.initials: Q
authors.lastname: Li
authors.forename: Li
authors.initials: L
authors.lastname: Qiao
authors.forename: Stephen
authors.initials: S
authors.lastname: Whiting
authors.forename: Michael
authors.initials: M
authors.lastname: Thomas
authors.forename: Mika
authors.initials: M
authors.lastname: Kivimaki
authors.forename: Meena
authors.initials: M
authors.lastname: Kumari
authors.forename: Aroon D
authors.initials: AD
authors.lastname: Hingorani
authors.forename: Ioanna
authors.initials: I
authors.lastname: Tzoulaki
authors.forename: Marjo-Riitta
authors.initials: MR
authors.lastname: Järvelin
authors.forename: Järvelin
authors.initials: J
authors.lastname: Marjo-Riitta
authors.forename: Aimo
authors.initials: A
authors.lastname: Ruokonen
authors.forename: Ruokonen
authors.initials: R
authors.lastname: Aimo
authors.forename: Anna-Liisa
authors.initials: AL
authors.lastname: Hartikainen
authors.forename: Anneli
authors.initials: A
authors.lastname: Pouta
authors.forename: Robin G
authors.initials: RG
authors.lastname: Walters
authors.forename: Alexandra I F
authors.initials: AI
authors.lastname: Blakemore
authors.forename: Steve E
authors.initials: SE
authors.lastname: Humphries
authors.forename: Lachlan J M
authors.initials: LJ
authors.lastname: Coin
authors.forename: Philippa J
authors.initials: PJ
authors.lastname: Talmud
mesh_terms: D000465:Algorithms; D016632:Apolipoprotein A-I / Q000235:genetics / Q000378:metabolism; D001055:Apolipoproteins B / Q000235:genetics / Q000378:metabolism; D015331:Cohort Studies; D003327:Coronary Disease / Q000235:genetics*; D056915:DNA Copy Number Variations; D015894:Genome, Human; D005838:Genotype; D006801:Humans; D015850:Interleukin-6 / Q000235:genetics / Q000378:metabolism; D010641:Phenotype; D020641:Polymorphism, Single Nucleotide; D051780:Sterol Regulatory Element Binding Protein 1 / Q000235:genetics / Q000378:metabolism; D051197:Toll-Like Receptor 4 / Q000235:genetics / Q000378:metabolism
chemical_list: D016632:Apolipoprotein A-I; D001055:Apolipoproteins B; D015850:Interleukin-6; D051780:Sterol Regulatory Element Binding Protein 1; D051197:Toll-Like Receptor 4