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Papers In Press, published online ahead of print November 15, 2006
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Pharmacogenomics/Molecular Profiling, Pfizer Global Research and Development, Groton, CT 06340
Corresponding Author: john.f.thompson{at}pfizer.com
The CETP gene has been the subject of hundreds of genetic analyses that typically focus on a small number of polymorphisms within a single ethnic group. Furthermore, the extent of DNA beyond the transcribed sequence from which SNPs may influence CETP expression has not been well defined. To better understand the role of natural variation in modulating CETP and HDL-C levels, dense genotyping of CETP and regions up to 15 kb on either side of the gene has been carried out on over 2000 individuals. A complex, non-linear set of LD bins was found with many bins interspersed along the DNA sequence and spread over large regions of the gene. Bins assigned based on large numbers of individuals matched the small subset of SNPs that had been assigned to bins previously with a small number of individuals. Associations of known functional SNPs with HDL-C were found but there were suggestions that there are additional functional SNPs not characterized previously. Narrowing of the set of likely functional SNPs was accomplished by comparing associations observed in different ethnic groups. The promoter SNP most highly associated with HDL-C that is likely to be functional, position 4502, alters a consensus transcription factor binding site.
Revised on November 10, 2006
Accepted on November 15, 2006
High density genotyping and functional SNP localization in the CETP gene
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