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Ankylosing spondylitis (AS) is a common inflammatory arthritis predominantly affecting the axial skeleton. Susceptibility to the disease is thought to be oligogenic. To identify the genes involved, we have performed a genomewide scan in 185 families containing 255 affected sibling pairs. Two-point and multipoint nonparametric linkage analysis was performed. Regions were identified showing "suggestive" or stronger linkage with the disease on chromosomes 1p, 2q, 6p, 9q, 10q, 16q, and 19q. The MHC locus was identified as encoding the greatest component of susceptibility, with an overall LOD score of 15.6. The strongest non-MHC linkage lies on chromosome 16q (overall LOD score 4.7). These results strongly support the presence of non-MHC genetic-susceptibility factors in AS and point to their likely locations.

Original publication

DOI

10.1086/319509

Type

Journal article

Journal

Am J Hum Genet

Publication Date

04/2001

Volume

68

Pages

918 - 926

Keywords

Chromosome Mapping, Chromosomes, Human, Cohort Studies, Female, Genetic Predisposition to Disease, Genetic Testing, Genome, Human, Genotype, Humans, Lod Score, Major Histocompatibility Complex, Male, Matched-Pair Analysis, Nuclear Family, Software, Spondylitis, Ankylosing, Statistics, Nonparametric