title: Linkage analysis of candidate regions for coeliac disease genes.
abstract: A strong HLA association is seen in coeliac disease [specifically to the DQ(alpha1*0501,beta1*0201 heterodimer], but this cannot entirely account for the increased risk seen in relatives of affected cases. One or more genes at HLA-unlinked loci also predispose to coeliac disease and are probably stronger determinants of disease susceptibility than HLA. A recent study has proposed a number of candidate regions on chromosomes 6p23 (distinct from HLA), 6p12, 3q27, 5q33.3, 7q31.3, 11p11, 15q26, 19p13.3, 19q13.1, 19q13.4 and 22cen for the location of a non-HLA linked susceptibility gene. We have examined these regions in 28 coeliac disease families by linkage analysis. There was excess sharing of chromosome 6p markers, but no support for a predisposition locus telomeric to HLA. No significant evidence in favour of linkage to coeliac disease was obtained for chromosomes 3q27, 5q33.3, 7q31.3, 11p11, 19p13.3, 19q13.1, 19q13.4 or 22cen. There was, however, excess sharing close to D15S642. The maximum non-parametric linkage score was 1.99 (P = 0.03). Although the evidence for linkage of coeliac disease to chromosome 15q26 is not strong, the well established association between coeliac disease and insulin dependent diabetes mellitus, together with the mapping of an IDDM susceptibility locus (IDDM3) to chromosome 15q26, provide indirect support for this as a candidate locus conferring susceptibility to coeliac disease in some families.
authors.affiliation: Institute of Cancer Research, Sutton, Surrey, UK. r.houlston@icr.ac.uk
authors.forename: R S
authors.initials: RS
authors.lastname: Houlston
authors.forename: I P
authors.initials: IP
authors.lastname: Tomlinson
authors.forename: D
authors.initials: D
authors.lastname: Ford
authors.forename: S
authors.initials: S
authors.lastname: Seal
authors.forename: A M
authors.initials: AM
authors.lastname: Marossy
authors.forename: A
authors.initials: A
authors.lastname: Ferguson
authors.forename: G K
authors.initials: GK
authors.lastname: Holmes
authors.forename: K B
authors.initials: KB
authors.lastname: Hosie
authors.forename: P D
authors.initials: PD
authors.lastname: Howdle
authors.forename: D P
authors.initials: DP
authors.lastname: Jewell
authors.forename: A
authors.initials: A
authors.lastname: Godkin
authors.forename: G D
authors.initials: GD
authors.lastname: Kerr
authors.forename: P
authors.initials: P
authors.lastname: Kumar
authors.forename: R F
authors.initials: RF
authors.lastname: Logan
authors.forename: A H
authors.initials: AH
authors.lastname: Love
authors.forename: S
authors.initials: S
authors.lastname: Johnston
authors.forename: M N
authors.initials: MN
authors.lastname: Marsh
authors.forename: S
authors.initials: S
authors.lastname: Mitton
authors.forename: D
authors.initials: D
authors.lastname: O'Donoghue
authors.forename: A
authors.initials: A
authors.lastname: Roberts
authors.forename: J A
authors.initials: JA
authors.lastname: Walker-Smith
authors.forename: M F
authors.initials: MF
authors.lastname: Stratton
mesh_terms: D002446:Celiac Disease / Q000235:genetics*; D002874:Chromosome Mapping; D002880:Chromosomes, Human, Pair 11; D002884:Chromosomes, Human, Pair 15; D002888:Chromosomes, Human, Pair 19; D002892:Chromosomes, Human, Pair 22; D002893:Chromosomes, Human, Pair 3; D002895:Chromosomes, Human, Pair 5; D002896:Chromosomes, Human, Pair 6; D002897:Chromosomes, Human, Pair 7; D005260:Female; D008040:Genetic Linkage; D006683:HLA-DQ Antigens / Q000235:genetics; D006801:Humans; D008297:Male; D010375:Pedigree
chemical_list: D006683:HLA-DQ Antigens