A genome-wide screen for susceptibility loci in ankylosing spondylitis

Brown, Matthew A., Pile, K. D., Kennedy, L. G., Campbell, D., Andrew, L., March, R., Shatford, J. L., Weeks, D. E., Calin, A., & Wordsworth, B. P. (1998) A genome-wide screen for susceptibility loci in ankylosing spondylitis. Arthritis and Rheumatism, 41(4), pp. 588-595.

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Abstract

Objective.

To localize the regions containing genes that determine susceptibility to ankylosing spondylitis (AS).

Methods.

One hundred five white British families with 121 affected sibling pairs with AS were recruited, largely from the Royal National Hospital for Rheumatic Diseases AS database. A genome-wide linkage screen was undertaken using 254 highly polymorphic microsatellite markers from the Medical Research Council (UK) (MRC) set. The major histocompatibility complex (MHC) region was studied more intensively using 5 microsatellites lying within the HLA class III region and HLA-DRB1 typing. The Analyze package was used for 2-point analysis, and GeneHunter for multipoint analysis.

Results.

When only the MRC set was considered, 11 markers in 7 regions achieved a P value of ≤0.01. The maximum logarithm of odds score obtained was 3.8 (P = 1.4 x 10-5) using marker D6S273, which lies in the HLA class III region. A further marker used in mapping of the MHC class III region achieved a LOD score of 8.1 (P = 1 x 10-9). Nine of 118 affected sibling pairs (7.6%) did not share parental haplotypes identical by descent across the MHC, suggesting that only 31% of the susceptibility to AS is coded by genes linked to the MHC. The maximum non-MHC LOD score obtained was 2.6 (P = 0.0003) for marker D16S422.

Conclusion.

The results of this study confirm the strong linkage of the MHC with AS, and provide suggestive evidence regarding the presence and location of non-MHC genes influencing susceptibility to the disease.

Impact and interest:

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150 citations in Web of Science®

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ID Code: 87769
Item Type: Journal Article
Refereed: Yes
Additional Information: No file attached.
Keywords: HLA B antigen, HLA DR antigen, ankylosing spondylitis, article, data analysis, family history, gene location, gene locus, genetic linkage, genetic screening, genetic susceptibility, HLA matching, human, incidence, major clinical study, major histocompatibility complex, marker gene, medical record, priority journal, risk assessment, united kingdom, Chromosome Mapping, Chromosomes, Human, Pair 4, Family Health, Female, Genetic Markers, Genetic Predisposition to Disease, Genome, Human, Humans, Inflammatory Bowel Diseases, Linkage (Genetics), Lod Score, Male, Psoriasis, Spondylitis, Ankylosing
DOI: 10.1002/1529-0131(199804)41:4<588::AID-ART5>3.0.CO;2-0
ISSN: 0004-3591
Divisions: Current > Schools > School of Biomedical Sciences
Current > Institutes > Institute of Health and Biomedical Innovation
Deposited On: 28 Sep 2015 05:59
Last Modified: 28 Sep 2015 05:59

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