title: Restriction fragment length polymorphism of the tumor necrosis factor region in patients with ankylosing spondylitis.
abstract: Although ankylosing spondylitis (AS) is known to be strongly associated with the class I major histocompatibility complex antigen HLA-B27, B27 is probably not the only genetic factor involved in the pathogenesis of AS. Because of the involvement of tumor necrosis factor (TNF) in cartilage damage and the localization of the TNF genes in the proximity of the HLA-B locus, we investigated the association between AS and TNF alleles. The frequencies of the restriction fragment length polymorphisms linked to the TNF genes were determined in 73 AS patients and 81 controls. No differences were observed between AS patients and controls with respect to the frequencies of the TNF restriction fragment length polymorphisms.
authors.affiliation: Department of Ophthalmo-immunology, The Netherlands Ophthalmic Research Institute, Amsterdam.
authors.forename: G M
authors.initials: GM
authors.lastname: Verjans
authors.forename: S M
authors.initials: SM
authors.lastname: van der Linden
authors.forename: G J
authors.initials: GJ
authors.lastname: van Eys
authors.forename: L P
authors.initials: LP
authors.lastname: de Waal
authors.forename: A
authors.initials: A
authors.lastname: Kijlstra
mesh_terms: D000483:Alleles; D016009:Chi-Square Distribution; D002874:Chromosome Mapping; D015342:DNA Probes; D005787:Gene Frequency; D008040:Genetic Linkage; D015796:HLA-B27 Antigen / Q000235:genetics; D006801:Humans; D010641:Phenotype; D012150:Polymorphism, Restriction Fragment Length; D013167:Spondylitis, Ankylosing / Q000235:genetics*; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics*
chemical_list: D015342:DNA Probes; D015796:HLA-B27 Antigen; D014409:Tumor Necrosis Factor-alpha