Chromosome 6p22 locus associated with clinically aggressive neuroblastoma
John M Maris1, Yael P Mosse, Jonathan P Bradfield
1Division of Oncology and the Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA 19104-4318, USA. maris@chop.edu
The New England Journal of Medicine
|May 9, 2008
Summary
A common genetic variation in chromosome 6p22 is linked to increased neuroblastoma risk in children. This finding may help identify children susceptible to this lethal childhood cancer.
Area of Science:
- Genetics
- Pediatric Oncology
- Cancer Genomics
Background:
- Neuroblastoma is a lethal pediatric cancer of the sympathetic nervous system with unknown etiology.
- Affects young children, posing a significant health challenge.
Purpose of the Study:
- To identify genetic factors contributing to neuroblastoma susceptibility.
- Investigate the association between genetic variations and neuroblastoma development.
Main Methods:
- Genome-wide association study (GWAS) on DNA from neuroblastoma patients and controls.
- Replication genotyping in independent cohorts to validate significant findings.
Main Results:
- Significant association found between neuroblastoma and common alleles of three single-nucleotide polymorphisms (SNPs) at chromosome 6p22.
- Homozygosity for the risk allele rs6939340 increased neuroblastoma likelihood (OR=1.97).
- Risk allele homozygosity correlated with advanced stage (stage 4), MYCN amplification, and relapse.
Conclusions:
- Common genetic variations at chromosome 6p22 are associated with neuroblastoma susceptibility.
- Identified genetic marker may aid in risk stratification and understanding disease progression.
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