Linked Life Data

16235096

Source:http://linkedlifedata.com/resource/pubmed/id/16235096

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3-4
pubmed:dateCreated
2006-1-10
pubmed:abstractText
Psoriasis is a complex inflammatory disease of the skin affecting 1-2% of the Caucasian population. Associations with alleles from the HLA class I region (now known as PSORS1), particularly HLA-Cw*0602, were described over 20 years ago. However, extensive linkage disequilibrium (LD) within this region has made it difficult to identify the true susceptibility allele from this region. A variety of genes and regions from a 238-kb interval extending from HLA-B to corneodesmosin (CDSN) have been proposed to harbor PSORS1. In order to identify the minimum block of LD in the MHC class I region associated with psoriasis we performed a comprehensive case/control and family-based association study on 242 Northern European psoriasis families and two separate European control populations. High resolution HLA typing of HLA-A, -B and -C alleles was performed, in addition to the genotyping of 18 polymorphic microsatellites and 36 SNPs from a 772-kb segment of the HLA class I region harboring the previously described interval. This corresponded on average to one SNP every 7 kb in the candidate 238 kb region. With all tests, the association was the strongest with single markers and haplotypes from a block of LD harboring HLA-C and SNP n.9. Logistic regression analyses indicated that association seen with candidate genes from the interval such as CDSN and HCR was entirely dependent on association with HLA-Cw*0602 and SNP n.9-G alleles. The previously reported association with CDSN and HCR was observed to be due to the existence of the associated alleles lying on the most commonly over-transmitted haplotype. Rare over-transmitted haplotypes also harbored HLA-Cw*12 alleles. HLA-Cw*12 family members are closely related to HLA Cw*0602, sharing identical sequences in their alpha-2 domains, peptide-binding pockets A, D and E and all 3' introns. The introduction of a potential binding site for the RUNX/AML family of transcription factors in intron 7, is also specific to these HLA-C alleles. These variants need to be investigated further for their role as PSORS1.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0340-6717
pubmed:author
pubmed:issnType
Print
pubmed:volume
118
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
466-76
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Localization of PSORS1 to a haplotype block harboring HLA-C and distinct from corneodesmosin and HCR.
pubmed:affiliation
Department of Genetics, Washington University School of Medicine, Box 8232, 4566 Scott Avenue, St. Louis, Missouri, 63110, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural