title: Non-linkage of a T-cell receptor gamma chain microsatellite (D7S485) to rheumatoid arthritis in multiplex families.
abstract: A highly informative microsatellite marker, D7S485, from the T-cell receptor gamma (TCRG) locus, has been used to study segregation of TCRG genes in 26 multiplex rheumatoid arthritis (RA) families. We used the sib-pair method to assess excess identity-by-descent sharing among affected members in these families and the LINKAGE package of programs was used to calculate two-point lod scores for the D7S485 marker. There was no evidence for segregation of TCRG genes with RA in affected siblings and significantly negative lod scores were obtained from linkage analyses using both autosomal dominant and recessive models of inheritance.
authors.affiliation: Arthritis and Rheumatism Branch, National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, USA.
authors.forename: M
authors.initials: M
authors.lastname: McDermott
authors.forename: C
authors.initials: C
authors.lastname: Hsu
authors.forename: M G
authors.initials: MG
authors.lastname: Molloy
authors.forename: B
authors.initials: B
authors.lastname: Mulcahy
authors.forename: M
authors.initials: M
authors.lastname: Phelan
authors.forename: F
authors.initials: F
authors.lastname: Shanahan
authors.forename: F
authors.initials: F
authors.lastname: O'Gara
authors.forename: C
authors.initials: C
authors.lastname: Adams
authors.forename: L A
authors.initials: LA
authors.lastname: Rubin
authors.forename: D O
authors.initials: DO
authors.lastname: Clegg
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000235:genetics*; D004276:DNA, Satellite / Q000032:analysis*; D008040:Genetic Linkage / Q000235:genetics*; D006801:Humans; D008126:Lod Score; D016555:Matched-Pair Analysis; D008875:Middle Aged; D010375:Pedigree; D016133:Polymerase Chain Reaction; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000235:genetics*
chemical_list: D004276:DNA, Satellite; D016692:Receptors, Antigen, T-Cell, gamma-delta