Genomics Inform.  2005 Sep;3(3):74-79.

Single Nucleotide Polymorphisms of a 16 kb Region on Human Chromosome 11p15.5 that Includes the H19 Gene

• Park MH
• Ku HJ
• Lee HJ
• Kim KJ
• Park C
• Oh B
• Kimm KC
• Lee JY

Abstract

The H19 gene, located at human chromosome 11p15.5, is imprinted in most normal human tissues. However, imprinting is often lost in tumors suggesting H19 is a putative tumor suppressor. We analyzed the single nucleotide polymorphisms (SNPs) of a 16 kb region that includes the H19 gene and its imprinting control region (ICR) in the Korean population. To identify SNPs, we directly sequenced this region in 18 Korean subjects. We identified 64 SNPs, of which 7 were in the exons of H19, 2 were in the introns, 14 were in the 3' intergenic region and 41 were in the 5' intergenic region. Of the 64 SNPs, 21 had not previously been reported and thus appear to be unique to the Korean population. The identified SNPs of H19 in the Korean population may eventually be useful as genetic markers associated with various diseases. In this study, 7 of the 64 identified SNPs were at CTCF binding sites in the ICR and may affect regulation of H19 gene imprinting. Thus, several genetic variations of the H19 gene may be important markers in human diseases that involve genomic imprinting, including cancer.

Keyword

H19; Chr11; SNP; Haplotype; Imprinting; CTCF

MeSH Terms

Binding Sites
Chromosomes, Human*
DNA, Intergenic
Exons
Genetic Markers
Genetic Variation
Genomic Imprinting
Haplotypes
Humans
Humans*
Introns
Polymorphism, Single Nucleotide*
DNA, Intergenic
Genetic Markers