Document Detail


Evaluation of association of SNPs in the TNF alpha gene region with schizophrenia.
MedLine Citation:
PMID:  17171665     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The association of the tumor necrosis factor alpha (TNFalpha) -G308A promoter polymorphism with schizophrenia has complemented clinical findings of increased levels of the TNFalpha cytokine in schizophrenic patients, with some support for a functional consequence of the variant. Our previous studies of genetic causes in schizophrenia supported findings of linkage to the major histocompatibility complex (MHC) region where the TNFalpha gene is located as well as association with the -G308A promoter polymorphism. While the common G-allele shows association in our sample, association with the A-allele has been reported by other groups. This suggests linkage disequilibrium (LD) rather than direct involvement in the disorder. In order to define LD of DNA variants with the disorder in this area, we analyzed 36 SNPs in a 165-kb region around this polymorphism. We detected nominally significant associations (P < 0.05) of three markers (including the -G308A promoter polymorphism) and multiple haplotypes with schizophrenia in our sample of 204 families (79 sib-pairs and 125 trios). The association is largely restricted to a 30 kb high LD region/block and should assist in the identification of a schizophrenia susceptibility gene within the block or elsewhere in the MHC.
Authors:
B Morar; S G Schwab; M Albus; W Maier; B Lerer; D B Wildenauer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics     Volume:  144B     ISSN:  1552-4841     ISO Abbreviation:  Am. J. Med. Genet. B Neuropsychiatr. Genet.     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-04-02     Completed Date:  2007-07-18     Revised Date:  2008-05-21    
Medline Journal Info:
Nlm Unique ID:  101235742     Medline TA:  Am J Med Genet B Neuropsychiatr Genet     Country:  United States    
Other Details:
Languages:  eng     Pagination:  318-24     Citation Subset:  IM    
Copyright Information:
(c) 2006 Wiley-Liss, Inc.
Affiliation:
CCRN/WAIMR Neuropsychiatric Genetics Laboratory, Western Australian Institute for Medical Research and UWA Centre for Medical Research, University of Western Australia, Perth, Australia. bmorar@cyllene.uwa.edu.au
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MeSH Terms
Descriptor/Qualifier:
Family
Gene Frequency
Genes, MHC Class I
Genetic Markers
Haplotypes
Humans
Linkage Disequilibrium*
Polymorphism, Restriction Fragment Length
Polymorphism, Single Nucleotide*
Schizophrenia / genetics*
Tumor Necrosis Factor-alpha / genetics*
Chemical
Reg. No./Substance:
0/Genetic Markers; 0/Tumor Necrosis Factor-alpha

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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