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                            Library & Multimedia
 Worldwide Population Variation and Haplotype Analysis at the Serotonin Transporter Gene SLC6A4 and Implications for Association Studies
NCJ Number
              307061
Journal

*Biological Psychiatry* Volume: 74 Issue: 12 Dated: 2013 Pages: 879-889
Author(s)
          John D. Murdoch;
                        William C. Speed;
                        Andrew J. Pakstis;
                        Christopher E. Heffelfinger;
                        Kenneth K. Kidd
Date Published

2013
Length
              11 pages
Annotation
              This article discusses the geographic distribution of variations at the serotonin transporter gene and implications for research into polymorphisms and functional variation across that locus.
Abstract
              Variation at the serotonin transporter gene, *SLC6A4*, has been associated with a variety of neuropsychiatric disorders and could be involved in other health-related phenotypes. Variation at the serotonin transporter gene, *SLC6A4*, has been associated with a variety of neuropsychiatric disorders and could be involved in other health-related phenotypes. The authors observed several rare alleles at the promoter VNTR (some novel) and population-specific distributions of the reported functional SNPs rs25531, rs25532, and rs6355, as well as two alleles at the intron 2 VNTR. Alleles of interest at the VNTRs occurred on specific haplotype backgrounds. The repeat-number variants at the promoter VNTR and the intron 2 VNTR, as well as the putative functional SNPs, showed ethnic variation in frequencies. The more common alleles at the VNTR polymorphisms show wide geographic distributions, whereas rare alleles at both show more restricted distributions. The derived alleles at the two functional SNPs in the promoter VNTR show restricted distributions and occur primarily on different repeat number alleles. The authors’ findings illustrate significant variation worldwide at *SLC6a4* and that the functionally implicated alleles at the SNPs rs25531, rs25532, and rs6355 occur on limited haplotypes and vary significantly in global distribution. Association studies at *SLC6A4* cannot a priori extrapolate across populations and should account for the multiple polymorphisms with possible functional variation across this locus, rather than focusing solely on one or two polymorphisms as commonly seen. (Published Abstract Provided)
      
  
          Additional Details
Grant Number(s)
        2010-DN-BX-K225


  
  
        
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        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)


  
  
        
  Award
        Further Development of SNP Panels for Forensics
    
  
  
Date Published: January 1, 2013
    
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