title: [Identification of the regions of copy number amplification associated with hepatocellular carcinoma].
abstract: OBJECTIVE
  To screen and determine the regions of copy number variation (CNV) associated with hepatocellular carcinoma (HCC) using SNP array and fluorescence quantitative PCR.
  
  
  METHODS
  The CNV from HCC cell line TJ3ZX-01 was analyzed using GeneChip Human Mapping 500K SNP array. According to the data obtained by SNP array analysis, four candidate amplification regions were verified in 41 primary HCC samples by fluorescence quantitative PCR.
  
  
  RESULTS
  Four regions of copy number amplification at 1q21.2, 1q22 approximately 23.1, 7p22.1 and 22q13.1 were detected by SNP array analysis. The four candidate amplicons occurred in 56.1% (23/41) of HCC samples at 1q21.2; 80.5% (33/41) at 1q22 approximately 23.1; 75.6% (31/41) at 7p22.1 and 31.7% (13/41) at 22q13.1 analyzed with sequence tagged site (STS) markers by quantitative PCR.
  
  
  CONCLUSIONS
  In four candidate amplification regions selected by SNP array analysis and detected by fluorescence quantitative PCR, three amplification regions show increased copy number in more than 50.0% HCC tissues. This result indicates that these amplification regions are associated with pathogenesis of hepatocellular carcinoma.
authors.affiliation: College of Life Science, Nankai University, Tianjin 300071, China.
authors.forename: Shi-guang
authors.initials: SG
authors.lastname: Zhang
authors.forename: Ying-tang
authors.initials: YT
authors.lastname: Gao
authors.forename: Wen-qin
authors.initials: WQ
authors.lastname: Song
authors.forename: Zhi
authors.initials: Z
authors.lastname: Du
authors.forename: Bin
authors.initials: B
authors.lastname: Yang
authors.forename: Yi-Jun
authors.initials: YJ
authors.lastname: Wang
authors.forename: Zheng-yan
authors.initials: ZY
authors.lastname: Zhu
mesh_terms: D006528:Carcinoma, Hepatocellular / Q000235:genetics* / Q000473:pathology; D045744:Cell Line, Tumor; D002878:Chromosomes, Human, Pair 1 / Q000235:genetics; D002892:Chromosomes, Human, Pair 22 / Q000235:genetics; D002897:Chromosomes, Human, Pair 7 / Q000235:genetics; D056915:DNA Copy Number Variations / Q000235:genetics*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000235:genetics* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D020411:Oligonucleotide Array Sequence Analysis; D016133:Polymerase Chain Reaction / Q000379:methods; D020641:Polymorphism, Single Nucleotide; D016324:Sequence Tagged Sites