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OBJECTIVE: A genetic association study was performed to investigate whether radiographical osteoarthritis (ROA) was associated with specific genotypes of the insulin-like growth factor I (IGF-1) gene. METHODS: Subjects aged 55-65 years were selected from a population-based study of which ROA at the knee, hip, spine, and hand was assessed. Genotypes were determined of a polymorphism in the promoter region of the IGF-1 gene. RESULTS: The IGF-1 locus was significantly associated with the presence of ROA (over-all adjusted OR for heterozygous subjects = 1.9, 95% CI 1.2, 3.1 and for homozygous subjects 3.6, 95% CI 0.8, 16.2). CONCLUSION: These results suggest that variation at the IGF-1 locus is associated with ROA development and may play a part in ROA pathogenesis. To confirm these findings replication in another population-based sample is needed.

Type

Journal article

Journal

Ann Rheum Dis

Publication Date

06/1998

Volume

57

Pages

371 - 374

Keywords

Aged, Alleles, Body Mass Index, Bone Density, Female, Genotype, Humans, Insulin-Like Growth Factor I, Male, Middle Aged, Osteoarthritis, Prospective Studies, Radiography