Unknown,Transcriptomics,Genomics,Proteomics

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Genotyping of human neuroblastoma tumors


ABSTRACT: Chromosome 1p LOH was seen in one-third of cases. LOH events on chromosomes 11q and 1p were generally accompanied by copy number loss. The one exception was on chromosome 11p, where LOH in all 4 cases was accompanied by normal copy number or diploidy, implying uniparental disomy. Amplification of MYCN was also noted, and also, amplification of a second gene, ALK, in a single case. Experiment Overall Design: We analyzed paired blood and primary tumor samples from 22 children with high-risk neuroblastoma for loss of heterozygosity (LOH) and DNA copy number change.

ORGANISM(S): Homo sapiens

SUBMITTER: Rani George 

PROVIDER: E-GEOD-8333 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Genome-wide analysis of neuroblastomas using high-density single nucleotide polymorphism arrays.

George Rani E RE   Attiyeh Edward F EF   Li Shuli S   Moreau Lisa A LA   Neuberg Donna D   Li Cheng C   Fox Edward A EA   Meyerson Matthew M   Diller Lisa L   Fortina Paolo P   Look A Thomas AT   Maris John M JM  

PloS one 20070228 2


<h4>Background</h4>Neuroblastomas are characterized by chromosomal alterations with biological and clinical significance. We analyzed paired blood and primary tumor samples from 22 children with high-risk neuroblastoma for loss of heterozygosity (LOH) and DNA copy number change using the Affymetrix 10K single nucleotide polymorphism (SNP) array.<h4>Findings</h4>Multiple areas of LOH and copy number gain were seen. The most commonly observed area of LOH was on chromosome arm 11q (15/22 samples; 6  ...[more]

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