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Finer linkage mapping of primary osteoarthritis susceptibility loci on chromosomes 4 and 16 in families with affected women

Lookup NU author(s): Dr Kaye Chapman, Professor John LoughlinORCiD

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Abstract

OBJECTIVE: To more finely linkage-map primary osteoarthritis (OA) susceptibility loci on chromosomes 4 and 16. METHODS: Two hundred eighteen families, each with 2 or more women concordant for primary OA (ascertained by total hip replacement [THR] or total knee replacement), were genotyped using highly polymorphic microsatellite markers from chromosomes 4 and 16, at an average density of 1 marker every 4 cM. Two-point and multipoint linkage analyses were performed for all 218 families and for the 146 families from the 218 that included women concordant for THR (female-THR families). RESULTS: A single region of linkage was identified on chromosome 4q, with a maximum multipoint logarithm of odds (LOD) score (MLS) of 3.1 in the 146 female-THR families. This locus was centered 79 cM from the 4p telomere and had a 1-LOD support interval of 4 cM. Two regions of linkage were identified on chromosome 16, the first on 16p with an MLS of 1.7 in the female-THR families and the second on 16q with an MLS of 1.9 in all 218 families. The first locus was centered 46 cM and the second 89 cM from the p-telomere. The 1-LOD support intervals were 12 cM and 10 cM, respectively. CONCLUSION: Finer linkage mapping using a high density of microsatellite markers has narrowed female OA susceptibility loci on chromosomes 4 and 16. The regions have been narrowed sufficiently for association analysis.

Publication metadata

Author(s): Forster T, Chapman K, Marcelline L, Mustafa Z, Southam L, Loughlin J

Publication type: Article

Publication status: Published

Journal: Arthritis & Rheumatism

Year: 2004

Volume: 50

Issue: 1

Pages: 98-102

ISSN (print): 0004-3591

ISSN (electronic): 1529-0131

Publisher: John Wiley & Sons, Inc.

URL: http://dx.doi.org/10.1002/art.11427

DOI: 10.1002/art.11427

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