title: High frequency of genetic alterations in non-small cell lung cancer detected by multi-target fluorescence in situ hybridization.
abstract: Detection of genetic alterations could provide a tool as an adjuvant for the diagnosis of non-small cell lung cancer (NSCLC) and to define patients at risk for early relapse. In this study, a multi-target fluorescence in situ hybridization (FISH) assay was conducted to investigate the correlation between the alterations of chromosomes, including 5p15.2, 6p11.1-q11, 7p12, and 8q24.12-q24.13 (LaVysion Test), and clinicopathological variables, and to clarify the potential of the multi-target FISH assay in 37 NSCLC. The most notable finding was the higher frequency of a gain in chromosome 5p15.2 in early-stage (I+IIa) lung cancers. The frequency of the gain was 81.3% (16/22) in stage I tumors. The frequencies of gains in 6p11.1-q11 and 8q24.12-q24.13 were 61.5% (8/13) and 84.6% (11/13) in stage IIIa cancers, as compared with lower frequencies in stage I tumors at 25.0% and 31.3%, respectively. There was also a significant difference in the histological type. Our results suggest that a gain in 6p11.1-q11 and 8q24.12-q24.13 plays an important role in tumor progression and is associated with histological differentiation. On the other hand, gene amplification in the 5p region was one of the most consistent alterations in early-stage lung cancer, and thus a series of genes in the critical 5p15.2 region might potentially associated with the development of lung cancer.
authors.affiliation: Department of Laboratory Medicine, Chungnam National University Hospital, Daejeon, Korea.
authors.forename: Ji Un
authors.initials: JU
authors.lastname: Kang
authors.forename: Sun Hoe
authors.initials: SH
authors.lastname: Koo
authors.forename: Kye Chul
authors.initials: KC
authors.lastname: Kwon
authors.forename: Jong Woo
authors.initials: JW
authors.lastname: Park
authors.forename: So Youn
authors.initials: SY
authors.lastname: Shin
authors.forename: Jin Man
authors.initials: JM
authors.lastname: Kim
authors.forename: Sung Su
authors.initials: SS
authors.lastname: Jung
mesh_terms: D000368:Aged; D014408:Biomarkers, Tumor / Q000235:genetics; D002289:Carcinoma, Non-Small-Cell Lung / Q000175:diagnosis / Q000235:genetics* / Q000473:pathology; D002869:Chromosome Aberrations; D002895:Chromosomes, Human, Pair 5 / Q000235:genetics; D002896:Chromosomes, Human, Pair 6 / Q000235:genetics; D002898:Chromosomes, Human, Pair 8 / Q000235:genetics; D005260:Female; D005784:Gene Amplification; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D008175:Lung Neoplasms / Q000175:diagnosis / Q000235:genetics* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging
chemical_list: D014408:Biomarkers, Tumor