" /> Spondyloarthropathy, susceptibility to, 1 - CISMeF





Preferred Label : Spondyloarthropathy, susceptibility to, 1;

Symbol : SPDA1;

CISMeF acronym : SPDA1;

Type : Phenotype, molecular basis known;

Alternative titles and symbols : Ankylosing spondylitis, susceptibility to; Bechterew syndrome; Marie-strumpell spondylitis;

Description : Spondyloarthropathy (SpA), one of the commonest chronic rheumatic diseases, includes a spectrum of related disorders comprising the prototype ankylosing spondylitis (AS), a subset of psoriatic arthritis (PsA), reactive arthritis (ReA), arthritis associated with inflammatory bowel disease, and undifferentiated spondyloarthropathy (Miceli-Richard et al., 2004). These phenotypes are difficult to differentiate because they may occur simultaneously or sequentially in the same patient. Studies have suggested that a predominant shared component, including HLA-B27, predisposes to all phenotypic subsets, and that these subsets should be considered as various phenotypic expressions of the same disease (Said-Nahal et al., 2000, Said-Nahal et al., 2001). Braun and Sieper (2007) provided a detailed review of ankylosing spondylitis, including clinical features, pathogenesis, and management. - Genetic Heterogeneity of Susceptibility to Spondyloarthropathy Additional susceptibility loci for spondyloarthropathy have been identified on chromosome 9q31-q34 (SPDA2; 183840) and chromosome 2q (SPDA3; 613238).;

Inheritance : Multifactorial;

Molecular basis : Susceptibility conferred by mutation in the major histocompatibility complex, class I, B gene (HLA-B, 142830.0001);

Laboratory abnormalities : HLA-B27 haplotype association (95% patients); Rheumatoid factor negative;

Prefixed ID : #106300;

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02/06/2024


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